Dayton, OH Zoning Overlays & Bonuses: Downtown Design Guide (2026)
Key Facts
- Applies to
- CBD and UBD Districts
- Frontage near lot line
- 70% of building, floors 1-2
- Max setback on that 70%
- 3 feet
- Remaining 30% setback cap
- 10 feet
Summary
Dayton's zoning code imposes mandatory building-design standards on new construction and renovations in the Downtown Districts, requiring most of each building's street frontage to sit close to the property line.
Seventy (70) percent of the building's linear frontage, for the first two floors, shall be located on the front property line or in line with adjacent buildings, provided the setback is not more than three (3) feet. The remaining thirty (30) percent of the linear frontage shall be setback no more than ten (10) feet, unless the proposed structure complies with the conditional use criteria set forth in Section 150.500, Conditional Use and Specific Use Regulations.
(b) If a greater front setback exists on the four (4) buildings, two on either side of the property under review, the Zoning Administrator, Board of Zoning Appeals, or the Plan Board, whichever is applicable under the procedures in Section 150.115 may grant an exception to sub-section 150.320.1(A)(1)(a). However, the maximum front setback shall be ten (10) feet.
(c) First floor street frontage design facilitates multi-tenant occupancy and walk-in commercial activity, such as retail.
(d) Along the front elevation, building wall segments or vertical bays shall be between twenty (20) and forty (40) feet in length and shall be distinguished from one another by architectural features such as columns, reveals, pilasters, recesses, or extensions.
Full Breakdown
Section 150.320.10 of Dayton's Zoning Code applies design standards, plus the Downtown Streetscape Guidelines & Corridor Plan, to every new building and building renovation in the CBD and UBD Downtown Districts. Under Schedule 150.320.10(a), 70 percent of a building's linear frontage on the first two floors must sit on the front property line or in line with neighboring buildings, with no more than a 3-foot setback; the remaining 30 percent can be set back up to 10 feet unless it meets the conditional-use criteria in § 150.500. The Plan Board, Board of Zoning Appeals, or Zoning Administrator can exempt a project only when the modification has no discernible impact on neighboring properties or the public right-of-way.
Violations & Fines
New construction or a renovation in the CBD or UBD that fails the frontage and setback standards in Schedule 150.320.10 without an approved exemption can be denied a building permit.
Frequently Asked Questions
Does Dayton require design review for downtown buildings?
Can a downtown building be set back further from the street?
Sources & Official References
Other rules in Dayton
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