Boulder BOZA approves 126-sq-ft variance to allow 477-sq-ft ADU on substandard R-1 lot
The Boulder Board of Zoning Adjustment approved a building-coverage variance (BOZ2026-00005) allowing about 126 square feet over the code limit so the owners can place a 477-square-foot detached ADU on a 6,227.9-square-foot R-1 lot. Staff raised concerns about whether alternatives were fully explored, but a majority of the board found the site conditions and design justified approval.
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The Board of Zoning Adjustment voted to approve BOZ2026-00005, a building-coverage variance for the property the staff identified in the hearing as 2910 5th Street, to permit a detached accessory dwelling unit (ADU) that increases building coverage by about 126 square feet. The motion to approve was moved by board member Drew and seconded by Jill; the board recorded affirmative votes and the chair announced the application approved.
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