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Board reviews courtesy plans for accessory dwelling unit at 508 10th Avenue SE; city planner says new zoning allows ADUs
Summary
At a March 12 Decatur Architectural Review Board meeting, staff presented a courtesy review for an accessory dwelling unit (ADU) at 508 10th Avenue SE. A resident asked whether ADUs are permitted; City Planner Tommy said a zoning update effective Jan. 1 allows ADUs subject to size limits and COA review in historic districts.
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The Decatur Architectural Review Board reviewed courtesy plans for an accessory dwelling unit at 508 10th Avenue Southeast during its March 12 meeting.
Staff described a proposed rear addition that would extend an existing back addition forward, keep the same width, and match the house’s roofing, siding and windows. Staff said the applicant hopes to reuse existing windows where possible and will provide a full certificate of appropriateness (COA) application with elevation details at a later meeting.
The matter drew questions from board members seeking clearer material lists and dimensions; staff asked the applicant to provide a full COA showing the recessed rear entry, matching roof pitch and siding, and other details when they return. Staff said the intent is not to extend beyond the current elevation walls and that knee braces and trim details may be left to the applicant’s discretion unless the board requests otherwise.
During public comment a resident asked, “So, can anybody in the district build an apartment if they have room in the back of their house?” City Planner Tommy responded, “We call them accessory dwelling units, mother-in-law suites,” and explained that a zoning update adopted by the city council and effective Jan. 1 permits ADUs subject to size limits and applicable COA review for historic districts. Staff and board members directed planning questions about zoning and use to the planning commission and emphasized that the Architectural Review Board reviews architectural appropriateness for historic properties.
The courtesy review is non-binding; no vote was taken. Staff advised the applicant to file a full COA packet with front and rear elevations and material specifications at the next available meeting (staff suggested April, or May if more time is needed).

