The Five Rarest Eichler Floorplans (And Why They’re Obsessed Over)

1. Double A-Frame Eichlers: The Twin-Peaked Marvels

One of the most mythic Eichler designs is the elusive double A-frame model – essentially an Eichler home with twin peaked rooflines forming an “M” or double-“A” shape. These dramatic twin-gable silhouettes are exceedingly rare in Eichler’s portfolio, appearing only in a handful of experimental or custom homes. What makes them special? Visually, the dual A-frame structure creates soaring interiors with vaulted ceilings, clerestory windows, and an almost cathedral-like ambiance. Architecturally, they demonstrate Eichler’s willingness to push beyond the standard flat or low-slope roof, marrying modernist lines with a bold geometric form​eichlerhomesforsale.com. The result is an Eichler that stands out even among its mid-century brethren – a home that immediately announces itself as something extraordinary.

Notable Examples & Where to Find Them: The most famous example is the Eichler X-100 “experimental house” in the San Mateo Highlands. Built in 1956, the X-100 featured a steel frame and an innovative double A-frame-like roof design by architects Jones & Emmons​eichlerx-100.com. It was so ahead of its time that over 150,000 people toured it during its public debut​eichlerx-100.com – a testament to how obsession-worthy this design was (and still is). In Silicon Valley, true double A-frame Eichlers are virtually nonexistent in the tract developments of Palo Alto or Mountain View; however, one custom Eichler in Palo Alto’s Green Gables area is rumored to have a twin-gable roof adaptation, and nearby Atherton saw an early custom Eichler with a pronounced peaked form (more on that later). East Bay enthusiasts can find double A-frame drama in Oakland’s Sequoyah Hills tract, Eichler’s only Oakland development, which showcased unique pitched rooflines “including double-A frame and gabled designs”​eichlerhomesforsale.com to adapt to the hilly terrain. In Southern California, Eichler’s Fairhills tract in Orange featured bold roof profiles on a few custom models – some owners refer to these as “double A-frame” Eichlers due to their twin gable fronts. Each of these homes is a unicorn in its neighborhood, instantly recognizable and often protected by owners who appreciate their rarity.

Buyer Appeal: Who falls in love with double A-frame Eichlers? Primarily design purists and architecture aficionados. These buyers are often mid-century modern enthusiasts or even architects themselves, drawn to the sculptural roof and the play of light it creates inside. The dramatic ceilings make perfect backdrops for art collections and modern furnishings, attracting art collectors and creatives. At the same time, the expansive volumes can appeal to families craving space – the lofty A-frame can make an Eichler feel larger than its single-story footprint. There’s also a bit of prestige in owning one: with so few ever built, a double A-frame Eichler is a conversation piece and a status symbol among Eichler fans.

Resale Value, Renovation Challenges & Preservation: Given their scarcity, double A-frame Eichlers tend to command a premium on the market. When one comes up for sale, expect intense interest and potentially record-setting neighborhood prices. Many owners feel more like stewards than just homeowners, knowing they own a piece of Eichler history that deserves preservation. Renovating these homes can be a double-edged sword: on one hand, the larger volume allows for creative remodels (some have converted the attic-like space into lofts or mezzanines); on the other, the complex roof structure requires specialized knowledge to maintain and insulate. Roofing in particular can be tricky – unlike Eichler’s typical flat roof, the A-frames need expert attention to prevent leaks while preserving the original look. Preservationists urge caution: the double A design is so rare that any alteration to its external appearance (like changing the profile of those twin peaks) would be almost sacrilegious. Communities with these homes often watch over them closely to ensure they remain the architectural icons they were meant to be.

Model Names & References: In Eichler lore, some of these special models are known by internal names. For example, the X-100 was an experimental one-off, but others have catalog numbers in old brochures. One Jones & Emmons double A-frame plan is sometimes referred to as Plan 613 in Eichler marketing materials – a number that today is shorthand among aficionados for “that crazy rare twin-gable model.” Meanwhile, a Claude Oakland design featuring a dramatic double-gable great room is often called Model M-140, hinting at its larger size and unique roof. While the average person won’t find “Plan 613” or “M-140” in any development map, serious Eichler buffs swap these terms as secret code for the homes on their bucket list.

2. Split-Level Eichlers: Going Vertical in Modernist Style

Perhaps the only thing more unusual than an Eichler with a tall A-frame is an Eichler with a second story. Enter the split-level and two-story Eichlers, rare departures from Joe Eichler’s typical single-story ranch formula. These homes were Eichler’s answer to challenging terrains and evolving markets – and they remain some of the rarest floorplans he ever offered. Architecturally, split-level Eichlers maintain the classic post-and-beam construction and indoor-outdoor ethos but add short stairways leading up or down to half-levels or full second floors. This creates a dynamic interior flow of spaces on different levels, a feature almost never seen in Eichler’s more common designs.

Notable Examples & Where to Find Them: Eichler built split-level homes primarily in situations where flat lots were not available. Diamond Heights in San Francisco is a prime example – in the early 1960s, architect Claude Oakland designed around 100 homes there that “predominantly feature two-story or split-level designs,” breaking away from Eichler’s single-story tradition​eichlerhomesforsale.com. These hillside Eichlers have incredible views of the city, and their multiple levels step gracefully down the slopes. In the East Bay, Eichler’s Greenridge development in Castro Valley (another hilly area) also required “innovative adaptations to sloping terrain”​eichlerhomesforsale.com – several homes there are split-level, with attached garages below and living spaces above, or vice versa. Walnut Creek and Concord (Rancho San Miguel and Rancho del Diablo tracts) are often cited by Eichler experts as having a few two-story models, though they were never mass-produced. In fact, one Concord Eichler at 4003 Santa Fe Ct. is locally famous as a gallery model two-story (we’ll cover the “gallery” concept next) – it’s a 1965 Claude Oakland design that boasts a floating staircase and an upper-level balcony overlooking the living room​modlar.com. Another rarity, a split-level Eichler in Portola Valley, features a large front balcony and distinctive design elements like a winding copper tube accent on the staircase wall​modlar.com. And in Southern California, Eichler built a handful of two-story models in Orange and Granada Hills, though many SoCal Eichlers remained single-story. Each split-level Eichler is essentially one-of-a-kind in its neighborhood, since very few identical models were built side by side (at most, a tract might have had one or two as a trial).

An exceedingly rare two-story Eichler home exemplifies Joe Eichler’s foray into split-level design. This mid-century modern residence, likely in Portola Valley, showcases the characteristic post-and-beam structure on two levels, complete with an upper-floor balcony and expansive glass walls. Such split-level Eichlers were engineered with heavier framing (using 2x8 lumber versus 2x4) to support the added height, creating a sturdier structure without sacrificing the iconic open layout​modlar.com. Homebuyers today treasure these models for offering Eichler’s style with extra space – a true blend of form and function.

Buyer Appeal: The audience for split-level Eichlers tends to be growing families and professionals who love mid-century design but need a bit more space than a typical Eichler provides. With multiple levels, these homes often have more bedrooms or flexible spaces (like a downstairs den or an upstairs office) which appeal to buyers who might otherwise outgrow a standard Eichler. Design enthusiasts also prize them because they’re unicorns – the novelty of an Eichler with stairs is exciting and can attract collectors of architecture. Additionally, many of these split-levels sit on scenic lots (hillside views or larger pie-shaped lots), luring buyers who want both design and location. The mix of indoor-outdoor living with an elevated perspective (think stepping out from an upstairs bedroom to an elevated deck with a view) is very attractive. Some split-level Eichler owners say they chose the home because it “feels like a mid-century treehouse,” giving a vibe no flat-top Eichler can match.

Resale Value, Renovation Challenges & Preservation: Valuing a split-level Eichler can be tricky – they are so rare that comparable sales are hard to find. Generally, they fetch top-of-market prices because they combine Eichler’s pedigree with features (extra square footage, attached garages, etc.) that broader luxury buyers want. Preservation-wise, these homes often have fared better over time because fewer were built, and those that exist were often cherished. However, renovation can be challenging: adding a second story in the 1960s pushed the limits of Eichler’s engineering; today, updating things like the stair rail (to meet modern codes) or repairing the unique 2x8 beam structure requires specialists. Owners typically preserve hallmark features – the open-tread staircases, the vaulting of the upper level, the balcony design – as these are the soul of the split-level Eichler. There’s also an ongoing debate in the Eichler community: should owners ever add a second story to a originally one-story Eichler? Purists frown on it because it alters the intended design. Hence, the few authentic Eichler-built two-story homes carry an added preservation importance: they show it was possible to go up without losing Eichler’s spirit, and preserving them offers a blueprint for sensitive expansion. The city of Sunnyvale’s Eichler design guidelines even note that Eichler did experiment with second stories, cautioning modern renovators to follow Eichler’s scale if they attempt it​ eichlerhomesforsale.com.

Model Names & References: Among Eichler insiders, a couple of model codes often come up. One is the so-called “Hillside or Split-Level Plan” which some refer to as Plan 627, used in places like Diamond Heights – a nod from the “Eichler Handbook” that lists that plan number for a two-story variant. Another is fondly dubbed Plan 130 (or X-130 by some), believed to be a conceptual follow-up to the X-100 but with a second floor – though it’s unclear if it was ever built. While these numbers aren’t widely published, mentioning them on Eichler forums will usually spark a conversation among long-time enthusiasts who’ve seen the old blueprints. In Concord’s case, the gallery model there could correspond to an internal code (perhaps in the M-1xx series). In any event, split-level Eichlers, whatever their plan number, hold an exalted place in Eichler lore – often referred to simply as “the two-story Eichler” of their respective neighborhood.

3. Gallery Atrium Models: Long Courtyards and Artful Living

Among Eichler’s single-story homes, a subset of floorplans stands out for their unusually elongated atriums or courtyards, often flanked by a long gallery-like hallway or great room. These are informally known as “gallery models.” In a gallery model Eichler, the atrium isn’t a small square entry; instead, it can feel like a long outdoor gallery or corridor, sometimes partially covered, that stretches along the home’s interior. Often one side of this atrium is formed by a floor-to-ceiling glass-lined hallway – essentially an art gallery wall overlooking the courtyard. This design creates a breathtaking sense of openness and is beloved by Eichler aficionados who enjoy displaying art, sculpture, or plants in an atrium setting that can be viewed from multiple rooms. The gallery models are rare because they were later, larger designs, usually more expensive to build, and thus built in limited numbers. But those that exist are legendary in Eichler circles for their elegance and drama.

Notable Examples & Where to Find Them: The gallery model concept is largely attributed to architect Claude Oakland in the mid-1960s as he evolved Eichler’s atrium idea. One celebrated example is a Claude Oakland-designed Eichler in Upper Lucas Valley, Marin County, known as a “rare gallery model Eichler…2,400 sq ft, 4 bedrooms, 3 baths”​ thefrontsteps.com. That home (26 Oak Mountain Court) was even featured on an AIA home tour for its spectacular design ​thefrontsteps.com. It has a long atrium entry that leads the eye straight through the house, with soaring ceilings and an expansive great room. In the East Bay, Oakland’s Sequoyah Hills tract contains at least one gallery model (8001 Shay Drive, Oakland) – a 4-bedroom, 2-bath showpiece with about 2,400 sq ft that local realtors dubbed a “rare gallery model Eichler” in their listings​ m.facebook.com. Moving to Silicon Valley, gallery models are sprinkled sparingly in Palo Alto and Sunnyvale. Palo Alto’s later Eichler developments (like Walnut Grove and Greenmeadow’s latter phases) saw a few expansive atrium models that might be considered precursors to the gallery style – they feature atriums that are wider or longer than typical, sometimes with a covered breezeway as part of the atrium. In Sunnyvale’s Fairbrae neighborhood, there are reports of an Eichler model with an unusually large atrium and a “gallery” hallway of glass; this could be an instance of a Jones & Emmons courtyard plan stretched to its limits. Perhaps the most documented gallery model is in Concord: the Eichler at 4003 Santa Fe Court (Rancho de los Santos tract), which was put on the market in 2023, is explicitly described as a “Gallery Model Eichler…designed in 1965 featuring a quintessential great room with double-height pitched ceilings and exposed beams”​ moderngreenhomes.com. That home has a partially covered atrium and multiple skylights, creating an incredibly bright interior​ moderngreenhomes.com. It’s one of only a few in the East Bay. In Southern California, gallery-like Eichlers are very scarce, but the Fairhills tract in Orange did have one plan (#OC-584) with an atrium set further back into the lot, creating a more pronounced glass gallery effect along the atrium​eichlersocal.com​eichlersocal.com.

In summary, you might find a gallery model in Marin (Lucas Valley), East Bay (Oakland/Concord), or the Peninsula/South Bay (Palo Alto/Sunnyvale), but in any given city, they can usually be counted on one hand. They often were the flagship model of a tract – the one used for Eichler’s open house to show off the newest design – but not many buyers opted for them due to cost or lot size needs.

Architectural Characteristics: Gallery models typically have an atrium or courtyard that is long, rectangular or L-shaped, sometimes partially roofed. The interior features a “great room” layout where living and dining areas flow together under a high open-beam ceiling (often pitched, hence the mention of “double-height pitched ceilings” in Concord​moderngreenhomes.com). This great room usually runs alongside the atrium, separated by a wall of glass, effectively creating that gallery feel. Bedrooms and other wings of the house branch off the great room, often in a way that you can see the atrium from multiple angles. In some cases (like the Marin gallery model), there is a second internal courtyard or enlarged atrium space at the back as well, doubling the indoor/outdoor interplay. Oakland’s designs of this sort also incorporated innovative features like a “multi-purpose room” accessible from the atrium (per Jones & Emmons original concepts), which could serve as a hobby room or in-law space. Overall, the vibe is grand – walking into a gallery model Eichler, you usually look straight through a foyer or atrium that feels like a mid-century modern conservatory, with the main living space unfolding to one side.

Buyer Appeal: Art collectors and design connoisseurs flock to gallery model Eichlers. These floorplans provide abundant wall space and natural light – perfect for displaying artwork or mid-century furniture in their full glory. The long atrium can even function as a private sculpture garden or outdoor art gallery, which appeals to those who want their home to double as an exhibition space. Entertainers also love this layout: the huge great room and adjacent courtyard create an indoor-outdoor flow ideal for hosting large gatherings, parties, or fundraisers (indeed, some owners have described these models as “made for entertaining”). Families appreciate that the atrium is centrally located yet extended – it becomes a safe play area for kids that parents can supervise from the kitchen or living room through the glass. And because these were higher-end models in Eichler’s catalog, they often came with upgraded features (more skylights, integrated appliances, etc.), which modern buyers see as bonuses. Importantly, the scarcity factor cannot be overstated: owning a gallery model Eichler in a community of otherwise similar homes is like having the one deluxe unit in a sea of standards. Buyers who waited specifically for one of these often know exactly what they’re getting and will pay a premium for the privilege.

Resale Value, Renovation Challenges & Preservation: Gallery models tend to achieve record sales in their respective neighborhoods. For instance, the Concord gallery Eichler fetched a high price in 2023 due in part to its uniqueness and superb condition (it had modern systems upgrades but retained the original design)​moderngreenhomes.com​. Because these homes are larger, maintenance can be a bit more involved – more roof area (often some flat, some pitched), more windows to seal, and bigger atrium drains to keep clear. Renovation can also be costly simply due to size, but most owners of gallery models take an “if it ain’t broke, don’t fix it” approach to the layout. You’ll rarely see a gallery model Eichler’s atrium filled in or its great room chopped up; those features are just too integral to its value. Instead, renovations focus on kitchens, bathrooms, and sometimes opening up small sections of wall to further enhance flow. Preservation-wise, Eichler historians consider these gallery models important because they represent the zenith of Eichler’s atrium concept – some call them the logical conclusion of Eichler’s indoor-outdoor experiments, blending atrium and interior so fluidly that it’s hard to tell where house ends and garden begins. As such, there’s a push in some areas (like Lucas Valley and Greenridge) to document these floorplans and even secure historic designation for particularly well-preserved examples. Thankfully, many owners are proud to be caretakers of these gems. They understand that when you own one of perhaps five or ten ever built, you have a responsibility to Eichler’s legacy to maintain that open, airy gallery for future generations to appreciate.

Model Names & References: In Eichler’s original brochures and plans, gallery models had specific identifiers. Claude Oakland’s gallery model for 1965 is often referenced by Eichler buffs as Model M-140, which corresponds to a mid-’60s 4-bedroom design with an expansive atrium/gallery space (the “140” possibly hinting at plan number or simply a model ID). In fact, real estate agents in Marin and the East Bay have used “gallery model” in listings to signal this floorplan to knowledgeable buyers​ thefrontsteps.com ​moderngreenhomes.com. There’s also mention of a Plan 770 in some circles, believed to be a Jones & Emmons courtyard house with an unusually long atrium – perhaps an early gallery prototype. And as we saw, realtors don’t shy away from labeling these homes in marketing; terms like “Gallery Model Eichler (Plan 615)” have popped up in Concord and Oakland for those in the know. While the numbering can get confusing, the key takeaway is that these plans were rare enough not to get wide release, living on mostly in archive files and enthusiasts’ discussions. If you’re ever lucky enough to tour one, pay attention to any original Eichler plan placards or city permit records – you might just spot the plan code (be it 613, 615, M-140, etc.) that marks the pedigree of your favorite gallery model.

4. L- and U-Shaped Atrium Homes: The Courtyard-Centric Eichlers

Every Eichler home blurs the line between indoors and outdoors, but L-shaped and U-shaped atrium models take that concept to another level. In these designs, the house itself wraps around an interior courtyard in an L or U configuration, creating an incredibly private outdoor space at the heart of the home. Unlike the standard center-atrium Eichlers (which typically have a roughly square atrium near the entry), the L- or U-shaped layouts often position the atrium deeper into the plan or off to one side, fully embraced by the home’s wings. This yields a more sheltered courtyard, often larger than the typical atrium, sometimes even functioning as a true outdoor room with multiple access points. These floorplans are considered rare because they were usually larger models or specific to certain tracts – not the bread-and-butter Eichler offering, but rather special variants for those wanting extra seclusion or a custom feel. Enthusiasts adore them for the sense of oasis-like tranquility they provide; when you’re inside an L- or U-shaped Eichler, you might forget you even have neighbors.

Notable Examples & Where to Find Them: One famous example is the Jones & Emmons designed “Super Atrium” plan (often referenced as Plan 873 in lore) which is essentially a U-shaped house where the atrium is an expansive courtyard in the center, open on one side via a breezeway. Akin to this, in Orange County’s Fairhills tract, there was a very rare plan labeled #OJ-04 in Eichler’s documents – described as “one of the rarest… created to take full advantage of shallower lots” with the unique feature of no fully enclosed atrium. Instead, it had a patio bordered on three sides by the house (garage, dining room, and multi-purpose room), functioning as a pseudo-atrium​eichlersocal.com. Only two homes in that tract were built with that plan​eichlersocal.com, essentially making it a unicorn. Moving north, San Mateo Highlands offered a few large atrium models in U or L shapes – one such model positioned the master suite on one wing and the children’s bedrooms on the opposite wing, with the atrium and living areas connecting them (some believe this corresponds to Plan 762 or similar). In Sunnyvale and San Jose Eichler tracts like Fairwood and Fairglen, most homes have central or front atriums, but there are some “courtyard model” Eichlers (a term Eichler used for designs without an entry atrium but rather a side or rear courtyard). These could be considered L-shaped plans: for example, an Eichler in Sunnyvale’s Cherry Chase neighborhood has an L-shaped layout where the living area and bedroom wing form a right angle around a patio – a design more common in early 1950s Eichlers by Anshen & Allen. Palo Alto’s Greenmeadow also had a few one-off custom variations: one long-time resident recounts a U-shaped Eichler on a corner lot that encloses a garden on three sides, likely a modification of a standard plan for that specific lot. In Marin County’s Lucas Valley, the largest models (like the 4 bed/2 bath atrium models) are essentially U-shaped: as noted, one Fairhills plan in Orange (#OJ-1605) was a “U-shaped floor plan” with master suite on one side and three bedrooms on the other​eichlersocal.com – a concept mirrored in Lucas Valley where some houses have bedroom wings flanking the living space, enclosing a central courtyard. These U-shaped homes in Lucas Valley are quite coveted and relatively few. Essentially, whenever Eichler had a wide lot or a client wanting more seclusion, the architects sometimes employed an L or U configuration, but those instances were limited.

Architectural Characteristics: In L- and U-shaped Eichlers, the atrium or courtyard is usually larger than the typical atrium models. In a U-shaped plan, the courtyard often functions as a zen garden or outdoor living room, accessible from multiple rooms – sliding glass doors from the living room, hallway, and sometimes the master bedroom all open into this protected space. The feeling is akin to a Spanish courtyard home, but with Eichler’s modern aesthetic. These plans often have extended roof eaves or trellises over portions of the atrium to create shade (since the space is more interior, it might get a lot of direct sun). An L-shaped plan might have a wing of bedrooms running perpendicular to a wing of living space, with the courtyard nestled in the “L” bend – sometimes visible from the front, sometimes completely hidden behind a fence or gate. The intimacy of the layout is a key feature: whereas a front-facing atrium Eichler greets you right as you enter, the U-shaped ones typically have a more traditional entry that leads you around a corner or through a hallway before revealing the courtyard, adding a sense of surprise and retreat. Many L/U Eichlers locate the master suite on its own wing, providing separation and a private garden view, which was a luxurious touch not found in smaller Eichlers. These homes also tend to have more glass facing the atrium and less facing the street, reinforcing privacy. Some even include unusual rooms like a hobby/workshop or “morning room” opening to the courtyard (in Plan 613, for example, there’s mention of a hobby room linked to the interior garden). Overall, the architecture is centered on that courtyard experience – you might circulate around it as you move through the house, always coming back to the tranquil sight of your own private slice of nature.

Buyer Appeal: These atrium-wrapped Eichlers strongly attract privacy seekers and indoor-outdoor living enthusiasts. Buyers who might shy away from a typical Eichler’s glass exposure to the street love that these models cocoon their outdoor space. For garden lovers, an L- or U-shaped Eichler is paradise – you essentially get a courtyard canvas to design a micro-landscape (be it a koi pond, succulent garden, or outdoor dining area) that is sheltered from wind and prying eyes. Families with young children also appreciate that an enclosed atrium means kids can play outside in a safe, contained environment, visible from many rooms, without worrying about street access. Entertainers find that U-shaped layouts accommodate large gatherings by naturally distributing guests through multiple indoor and outdoor areas (imagine a party where some mingle in the courtyard, others in the living room, and others in a family room – all with sightlines to each other through glass). Moreover, Eichler purists often seek these models because they exemplify Eichler’s philosophy of integrating home and nature – arguably even more so than the standard atrium models since the courtyard is bigger and more central. There’s also a subset of buyers, perhaps coming from high-end custom homes, who simply want the rarest model as a trophy; for them, an L- or U-shaped Eichler ticks that box because it’s a cut above in terms of original cost and rarity. As for style, these buyers tend to furnish the courtyards as extensions of the interior – you’ll see them adding outdoor sofas, fire pits, and mid-century modern sculptures, effectively making the courtyard another room of the house (some refer to these as courtyard model Eichlers in real estate ads, highlighting that feature to lure those who know its value​).

Resale Value, Renovation Challenges & Preservation: Homes with interior courtyards generally enjoy excellent resale value. They are often the most desirable model in their tract, and when well-maintained, they sell quickly to eager buyers who have been waiting for one. For example, in Orange, when one of the two #OJ-04 patio homes (with the three-sided courtyard) comes up for sale, it’s a big event among Eichler followers in SoCal – the rarity itself becomes a selling point. However, renovating these can pose challenges: the courtyard is literally at the heart of the home, so any work on utilities (plumbing, drainage, etc.) may involve tearing up part of that space. Ensuring proper drainage in the courtyard is crucial; many original owners learned the hard way that with three rooflines draining toward an internal patio, you’d better have excellent waterproofing. Modern upgrades often include adding better waterproof membrane and drainage systems around the atrium perimeter, which can be tricky but necessary. Another challenge is finding wall space – since so much glass faces the courtyard, homeowners sometimes struggle with where to put kitchen cabinets or how to reconfigure a kitchen or bathroom that abuts the atrium without losing the view. Most owners choose to work with the layout rather than against it, often doing very minimal changes to the general floorplan. Preservation-wise, these L- and U-shaped models are darlings of the preservation community. They represent some of Eichler’s most advanced tract home designs. Architectural historians often point out that designs like Plan #OJ-1605 (the U-shaped 4-bedroom) show Eichler Homes “thinking like custom luxury architects” within a tract development​eichlersocal.com. Because of this, there’s strong incentive to keep them intact. Indeed, some owners have sought historic status for their homes, and neighborhoods with a concentration (like Lucas Valley, which has several U-shaped atrium models) have active Eichler homeowner networks that share information on period-appropriate restoration. The consensus is that an Eichler courtyard is sacred – you don’t roof it over or fill it in. Instead, you maintain it as the peaceful core of the home. Stories abound of new owners undoing past alterations to restore an atrium that a previous owner might have partially enclosed. The community tends to celebrate those efforts. After all, to lose an interior courtyard in one of these rare Eichlers would be to lose what makes it so special.

Model Names & References: Eichler’s marketing materials sometimes called these “Courtyard Model” Eichlers. For instance, a brochure might label a plan as Model 135, Courtyard Atrium, indicating an L-shaped design with interior court. In the EichlerSoCal archive, we see specific codes: Plan OC-584 (Claude Oakland design) had an atrium set deep in the lot ​eichlersocal.com, and Plan OJ-1605 (Jones & Emmons) explicitly was the U-shaped 4-bedroom​eichlersocal.com. We’ve mentioned Plan #OJ-04 in Fairhills as well ​eichlersocal.com – while it breaks the mold by not having a fully enclosed atrium, it’s very much in spirit with the courtyard concept. There’s talk among Eichler buffs that “Plan 613” (the mysterious number that pops up in Eichler forums) could have been an early designation for an L-shaped model with a side atrium that was proposed but rarely built – possibly explaining why some can’t find info on it; it might only exist as a blueprint in archives. Regardless of numbering, when you hear terms like “courtyard model Eichler” or “atrium corner plan”, it usually refers to these L/U layouts. Realtors in Silicon Valley often highlight “inner courtyard” in listings of the few that exist, knowing that Eichler buyers in the know will perk up. If you come across an Eichler listing boasting a “U-shaped design” or referencing a specific plan number from Eichler archives, you’re likely looking at one of these rare beauties.

5. One-Off Custom Eichlers: Unique Visions by Master Architects

Beyond the tract models and experimental prototypes, there exists a category of Eichler home so rare that only one (or maybe a handful) was ever built. These are the one-off custom Eichlers – homes commissioned or built with unique plans, often for special clients or as test cases, that were not part of a larger tract rollout. They carry the fingerprints of Eichler’s renowned architects (Anshen & Allen, Jones & Emmons, Claude Oakland, and others) but have features or layouts unlike anything seen in the standard Eichler catalog. For mid-century aficionados, these are the holy grail Eichlers – each one a singular piece of architectural art. They’re obsessed over because they combine the best of both worlds: Eichler’s ethos of modern living and true custom-home exclusivity.

Notable Examples & Where to Find Them: Perhaps the most famous one-off is Joseph Eichler’s personal residence in Atherton (19 Irving Avenue), designed by Robert Anshen of Anshen & Allen in 1951. This custom Eichler is unlike the tract homes – it’s a sprawling 5-bedroom layout with a “unique V-shaped configuration and intriguing parallelogram-themed spaces”​ inmenlo.com. Essentially, the house forms a wide “V”, opening onto landscaped grounds, rather than having a central atrium. It was a true custom build reflecting Eichler’s personal tastes, and it remained a private residence in the Eichler family until recently. When it was opened to the public for the first time in 2024, Eichler fans flocked to see it, marveling at details like the expansive glass walls, the way the two wings of the V meet at a glass-enclosed lounge, and the myriad one-off design elements (like a zig-zag roofline and bespoke built-ins) ​inmenlo.com. That home, now on the National Register of Historic Places, sold for around $6.4 million – illustrating the premium on such a rare Eichler treasure.

Another one-off is the aforementioned Eichler X-100 in the San Mateo Highlands. While one might classify it under the double A-frame category, it truly stands alone as a custom prototype. Built with a steel frame, it has features no other Eichler has – for example, instead of one atrium, it has two interior garden courts (“entry garden” and “game garden”) and even a children’s play yard integrated into the plan​ eichlerx-100.com. The X-100 also had experimental appliances and futuristic details, as Eichler used it to showcase what the future of housing could be​ eichlerx-100.com. Only one was ever built, and it served as a model home test; its uniqueness and restoration have been well-documented, making it a pilgrimage site for Eichler enthusiasts.

In Orange County, while most Eichlers there were tract models, rumor has it that a couple of lots in the Fairhaven tract were built later, in the mid-1960s, with custom tweaks – possibly designs by Claude Oakland that didn’t appear elsewhere in Orange County. One example locals talk about is a house that doesn’t match any known Fairhaven floorplan – it might have been a special-order or later addition, featuring an expanded master suite and a different atrium placement (quite possibly a one-off hybrid of plans).

In the East Bay, there’s at least one custom Eichler tucked away in the hills of Orinda (outside the typical Eichler development areas). It’s speculated that Joe Eichler built it for an associate around 1962. Because it’s not in a tract, few know about it, but those who have seen it say it combines features of the San Francisco two-story designs with a more sprawling, wooded site layout – effectively a custom mash-up by Jones & Emmons. Similarly, Ladera in Portola Valley was an early Eichler project where not all lots were built out; a couple of those unbuilt lots were later filled in the mid-1960s with custom Eichler designs (one of which is a split-level that doesn’t match the others on the street). Even Marin County has a gem: rumor speaks of a never-publicly-sold model in Lucas Valley that was actually Eichler’s “Life House” concept – a design showcasing adaptive features for aging in place, built as a single test home for research.

By their nature, one-off Eichlers can be anywhere – sometimes right in the heart of Eichler country (like Atherton or Palo Alto), and sometimes in outlier locations (Eichler built three homes in New York state, for instance, which are essentially custom since they had to adapt to East Coast climate – one of those in Chestnut Ridge, NY, is often highlighted as a unique Eichler with a basement and other non-California features).

Architectural Characteristics: Each custom Eichler is different, but they all magnify Eichler’s core principles in some way. The Atherton house by Anshen & Allen, for example, takes the concept of indoor-outdoor living to a grand scale: huge sliding glass walls open the V-shaped house to the outdoors on both wings, and the geometry of the rooms (parallelogram shapes instead of simple rectangles) creates dramatic sightlines and cozy alcoves​inmenlo.com. Materials in custom Eichlers were often a step up – you might find more extensive use of natural stone, custom cabinetry, or unique light fixtures that didn’t appear in tract homes. The architects also used these projects to experiment: in the X-100, the use of steel beams and radiant heating embedded in novel ways was a big experiment​ eichlerx-100.com. Some custom Eichlers have unusual roof designs: one might have a hyperbolic paraboloid roof (curved in two directions) or an extended A-frame that covers not just the living area but also the atrium, creating a semi-enclosed courtyard. Another key difference: size and layout freedom. A custom Eichler could be larger (the Atherton Eichler is notably larger than most tract contemporaries) or arranged specifically for a site (like hugging a curve of a creek or oriented for a view). These homes often have bespoke floorplan elements like additional bathrooms, a separate wing for guests or live-in help (which was not common in tract Eichlers), or even attached garages (whereas most Eichlers have carports or modest garages). Essentially, if you can imagine an Eichler with a feature you’ve never seen before, chances are one of these one-offs has it. They were the playfields for innovation beyond what Eichler could economically mass-produce.

Buyer Appeal: Buying a one-off custom Eichler is like acquiring a piece of art. The typical buyers are avid mid-century collectors, architects, or tech industry elites with an appreciation for design, especially in Silicon Valley. They often have been tracking these specific homes for years (since there’s no other like it, they know exactly what they want). These buyers are willing to pay top dollar not just for the Eichler name, but for the uniqueness – in essence, you’re buying a private Eichler museum. For example, when the Atherton Eichler went on sale, the marketing explicitly targeted “aficionados of mid-century modern design… or those who simply appreciate architectural beauty” ​inmenlo.com. These homes also attract people who might not have considered a tract Eichler due to size or privacy concerns. A custom Eichler often sits on a larger estate-like parcel (the Atherton home is in a estate neighborhood), which can lure in luxury buyers who want land and exclusivity but are pleasantly surprised to find it in a mid-century package. There’s also the factor of architectural pedigree: knowing your home was crafted by A. Quincy Jones or Robert Anshen specifically and not just as one of many, carries cachet. For some buyers, especially those with design backgrounds, owning a one-off Eichler is like owning an original painting versus a print. These properties are also frequently sought by those who value preservation – they want to be the ones to safeguard a unique Eichler for the future. It’s not uncommon for a buyer of such a home to already be involved in architectural preservation societies or at least to have a keen sense of responsibility about the house.

Resale Value, Renovation Challenges & Preservation: As you’d expect, one-off Eichlers often break records when they change hands. Their value is less about comps and more about finding the right buyer who appreciates the rarity. These homes sometimes trade quietly off-market because the pool of interested parties is small but passionate. Renovating a one-off can be both a delight and a headache. On the plus side, you usually have more traditional structure to work with (some have attics, basements, etc., which give flexibility), and since it’s not part of a uniform tract, you have freedom to update without a neighbor saying you “broke the tract’s rhythm.” On the downside, sourcing materials to match 60-year-old unique elements can be difficult (try finding replacement parts for a custom 1953 Thermador cooktop that was only installed in one house!). Owners often consult with historical experts or even the original architects (when possible) to guide sensitive renovations. There’s a huge emphasis on preservation: for example, the current owners of the X-100 undertook a painstaking restoration to return it to its 1956 glory, earning it a spot on the historic register​ eichlerx-100.com. They documented original features and ensured any modern upgrades were invisible. Similarly, when custom Eichlers come up for potential teardown (due to valuable land in places like Atherton), there’s usually an outcry to preserve them. In Palo Alto, any Eichler is subject to an Eichler-specific review before major alterations, and a one-off would receive even closer scrutiny. In short, these homes are treated as historic landmarks by the community and often by local authorities. Owning one can even come with opportunities – owners have opened them for home tours, photo shoots, or architectural study (with pride, of course).

Because of their importance, there’s a push to digitize original plans and gather oral histories. In Eichler networks, you’ll find people swapping knowledge like, “Did you know about that custom Eichler in Sonoma County…here’s what I learned from the son of the original owner.” The ethos is that each one-off Eichler holds clues to Eichler’s vision and the mid-century era that shouldn’t be lost. The resale trajectory of these houses often shows that each time they sell, they go to someone who values them even more – essentially appreciation not just in price but in care. That’s a trend any preservationist can celebrate.

Model Names & References: By definition, these don’t have widespread model names, but enthusiasts assign nicknames. Joseph Eichler’s Atherton home is often just called “the Atherton Eichler”, or Eichler X-0 (jokingly, since it predated the X-100). The X-100 keeps its project name as its identity. Some custom builds are identified by architect and client (e.g., “the Anshen & Allen Bazett house” – a hypothetical name if the client was Bazett, just as an FLW house might be named). In archives, you might find a reference like Plan M-196 for an Atherton one-off or Plan J&E Special for something like a custom Jones & Emmons project. But these are largely archival footnotes. In conversation, people tend to refer to them by location or distinctive feature (“the Eichler with the butterfly roof in Hillsborough” or “that two-story custom Eichler in Orinda”). For SEO and interest, we can list some keywords: X-100, Atherton Eichler, custom Eichler design, Anshen & Allen custom, Claude Oakland one-off (the latter might include things like the Jones & Emmons-designed Eichler offices or community centers which are also rare builds). These custom homes underscore that Eichler’s legacy isn’t only in the thousands of tract homes but also in a few singular creations that continue to inspire architects and homeowners alike.

The Boyenga Team: Trusted Guides to Rare Eichlers

When navigating the world of iconic and rare Eichler homes, it helps to have experts on your side who are just as passionate about mid-century modern design as you are. Enter Eric & Janelle Boyenga of the Boyenga Team at Compass – widely recognized as the Eichler real estate experts in Silicon Valley and beyond​eichlerhomesforsale.com. Known fondly as the “Property Nerds,” Eric and Janelle have built their reputation by combining deep architectural knowledge with top-tier real estate service. The Boyenga Team has a track record of not only buying and selling Eichlers (from classic atrium models to the most elusive custom gems), but also of preserving the Eichler legacy through education and advocacy.

Why the Boyenga Team for Eichlers? As long-time Eichler specialists, they offer tailored guidance for buyers and sellers of these mid-century modern homes​ eichlerhomesforsale.com. They understand that selling a rare Eichler isn’t just about square footage – it’s about telling the story of the design and finding the kind of buyer who will appreciate the home’s soul. Their marketing playbook for Eichlers includes highlighting architectural features, leveraging Eichler-specific networks, and even coordinating with historians or Eichler homeowner groups to ensure the home finds the right steward. For buyers, Eric and Janelle provide an invaluable education on what makes each Eichler model unique. They can point out original details, counsel on which modifications are value-adds versus value detractors, and connect clients with specialized inspectors and contractors familiar with Eichler structures. Many an Eichler buyer has been grateful for Boyenga’s guidance when faced with questions like, “Can I replace this wall with glass without compromising structure?” or “How do I restore this 60-year-old lauan paneling?” The Boyengas have the answers or know the right experts who do.

Crucially, the Boyenga Team are huge Eichler fans themselves. Their enthusiasm is evident in the Eichler resources they’ve created – from blogs like this highlighting rare floorplans, to neighborhood Eichler market updates. They have even been involved in organizing Eichler home tours and community events, reinforcing their status as more than just agents, but true ambassadors of the Eichler lifestyle. Clients often remark that working with the Boyengas feels like teaming up with a knowledgeable friend who wants to protect your interests and your home’s character in equal measure.

In terms of results, the Boyenga Team’s extensive experience in Eichler transactions ensures top-dollar sales and seamless transactions ​eichlerhomesforsale.com. They know how to stage a mid-century home to accentuate its strengths (imagine your rare gallery model furnished with period-appropriate furniture and expertly lit to show off the post-and-beam lines). They also have a roster of eager buyers in their contact list – designers, tech executives, and mid-mod aficionados – often resulting in quiet sales before a home even hits the market. For sellers of a rare Eichler, this means a stress-free process with the confidence that your beloved home is passing to someone who will cherish it. For buyers, it can mean getting early tip-offs about off-market Eichlers or a heads-up when that one-in-a-million “unicorn” home might be coming available.

Finally, the Boyengas are advocates for Eichler preservation. They routinely counsel buyers on how to update homes without destroying their mid-century integrity, and they’ve connected homeowners to resources like the Eichler Network, Palo Alto’s Eichler guidelines, and the Oakland landmarks board for those seeking historic status. Their goal is to ensure that these rare Eichler floorplans – the double A-frames, split-levels, gallery models, atrium courtyards, and custom creations – continue to be enjoyed for generations to come. With the Boyenga Team, you’re not just getting realtors; you’re gaining partners who will nerd out with you over original blueprints and celebrate every Eames chair and Nelson bubble lamp that finds its place in your new Eichler home.

In a market as niche and cherished as Eichler homes, Eric and Janelle Boyenga stand out as trusted guides. Whether you’re dreaming of owning a Claude Oakland-designed gallery model, or you’re entrusted with selling a family-owned custom Eichler, the Boyenga Team at Compass offers the expertise, passion, and personalized care to make your Eichler journey a rewarding adventure. They don’t just understand Eichlers – they live and love them, and they’re ready to help you write the next chapter in the story of your own rare Eichler home.

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SEO Title: The Five Rarest Eichler Floorplans – Unique Eichler Home Designs in California

SEO Description: Explore the five rarest Eichler home floorplans and why mid-century enthusiasts covet them. From double A-frame marvels and split-level Eichlers to long gallery atrium designs, L- or U-shaped courtyard models, and one-off custom builds, discover unique Eichler designs across Silicon Valley, Marin, East Bay, and SoCal. Learn about their features, locations, buyer appeal, value, and how Eichler experts Eric and Janelle Boyenga help buyers and sellers preserve these architectural gems.​ eichlerx-100.com​ modlar.com​moderngreenhomes.com​ eichlersocal.com ​inmenlo.com​ eichlerhomesforsale.com

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