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Commission approves demolition of altered 1885 barn at 603 West Main Street; replacement to be ADU
Summary
Staff advised that an updated historical evaluation found the barn at 603 West Main Street lacks integrity; the commission agreed to demolition with requirement that a replacement accessory dwelling unit (ADU) approximate the barn's historic aesthetic and be relocated off the city right‑of‑way.
City planning staff told the Grass Valley Historical Commission that an 1885 carriage barn behind 603 West Main Street, recorded as a priority‑2 structure, has undergone multiple alterations that have diminished its historic integrity.
Staff presented an updated resource evaluation prepared by historian Dana Supernovitz, which concluded that cumulative changes — including a reconstructed west elevation, interior slab, rebuilt stairway and modern siding — prevent the barn from meeting the city's criteria for individual…
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