Atlanta, GA Zoning Overlays & Bonuses: Downtown Design Guide (2026)
Key Facts
- Governing chapter
- Code § 16-18A (SPI-1 Downtown)
- Permit required
- Special administrative permit, most exterior work
- Glass transmittance
- 50% minimum, tinted glass
- Storefront fenestration
- 65% of façade length
- Façade height before setback
- 36 feet minimum
Summary
Atlanta's SPI-1 Downtown Special Public Interest District sets mandatory exterior design rules: window transparency, façade fenestration percentages, active ground-floor uses, and a special administrative permit before any building permit issues.
Windows and door glass shall utilize clear glass or tinted glass. Tinted glass shall have a transmittance factor of 50 percent or greater and shall have a visible light reflectance factor of ten or less. Painted glass, reflective glass or other similarly treated or opaque windows are not permitted.
Full Breakdown
Chapter 16-18A applies across downtown's seven subareas, Downtown Core, SoNo Commercial East and West, SoNo Residential, Centennial Olympic Park, Terminus and Fairlie-Poplar, supplanting the underlying base zoning within the mapped district. Ground-floor windows must be clear or lightly tinted glass (50%+ transmittance, reflectance under 10); storefront streets need 65% fenestration coverage, other streets 50% for non-residential uses and 25% for residential. Street-facing façades must rise a minimum 36 feet before stepping back, and sidewalk-level ceilings must clear 14 feet. Any exterior demolition, new construction, or façade modification requires a special administrative permit from the bureau of planning before a building permit is issued.
Violations & Fines
No building permit issues without an approved SAP (§ 16-18A.004). Violating Part 16 zoning rules is a misdemeanor under § 16-30.002, with each day counted as a separate offense.
Frequently Asked Questions
Does the downtown design guide cover all of Atlanta?
Can I skip the special administrative permit for a small renovation?
Sources & Official References
Other rules in Atlanta
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Downtown Design Guide in Nearby Cities
How other cities in Fulton County handle downtown design guide.