Adding an ADU to an Eichler is not the same as adding a backyard cottage to an ordinary home. Eichlers were designed around privacy, glass walls, atriums, post-and-beam structure, radiant slabs, low rooflines, and carefully framed indoor-outdoor spaces. A well-designed ADU can add flexibility, rental potential, multigenerational living, guest space, or a work-from-home studio — but a poorly placed one can block views, compromise privacy, overwhelm the lot, or weaken the home’s mid-century modern character. This guide explains how Eichler owners, buyers, and sellers can think about ADUs in a way that protects both function and architecture.
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