Atlanta Zoning | Overlays

BeltLine Overlay and Atlanta's Inclusionary Zoning: Who Must Build Affordable Units

Two questions come up for any small project near the BeltLine. Does the BeltLine Overlay add rules to my lot? And does Atlanta's inclusionary zoning, the rule that makes a builder include affordable homes, apply to me? For a duplex, triplex or fourplex the second answer is short: the rule starts at ten new rental homes. The first answer depends on whether your lot is immediately next to the BeltLine Corridor. This page gives both, from the City Code as updated September 24, 2026.

Does Inclusionary Zoning Apply to Your Project?

Sources: Atlanta Zoning Ordinance Sec. 16-36A.001, Sec. 16-37.004 and Sec. 16-41.001.

The threshold is written into the first section of each chapter. Chapter 36A says: "The provisions of this chapter shall apply to all residential rental developments of ten or more new residential rental dwelling units in the BeltLine Overlay District." A building of two, three or four homes is below ten, so the chapter places no affordable housing duty on it.

What the BeltLine Is

Atlanta Beltline Inc describes the project this way: "This 22-mile loop of trails, parks, and future transit is connecting 45 neighborhoods." Its project page invites visitors to "explore over 16 miles of urban trails." Those are the organization's own figures.

The zoning rule is separate from the trail. An overlay is a second set of zoning rules that applies on top of the base district inside a mapped boundary. Atlanta created the BeltLine Overlay District by Ord. No. 2007-09 on February 28, 2007, as Chapter 36 of the Zoning Ordinance. VanPlex did not open the overlay's boundary map, so confirm with the Department of City Planning whether your lot is inside it.

Which Lots the Overlay Covers

Section 16-36.001 applies the overlay rules to land inside the boundary "with the exception of existing lots of record that are zoned R-1 through R-5 or Special Public Interest District and not located immediately adjacent to the BeltLine Corridor." A lot of record is a lot that already existed in the public land records.

Apply that sentence to your own lot. If the lot is zoned R-1 to R-5, already existed, and does not sit immediately next to the corridor, the overlay rules do not apply and the base district chapter governs. If the lot is immediately adjacent to the corridor, or is zoned something else such as RG or MR, the overlay applies. On VanPlex's reading, a lot rezoned from R-4 to MR-MU inside the boundary would then fall under the overlay, because the exception is written for R-1 to R-5 and SPI zoning.

What the Overlay Requires of a Small Project

Source: Atlanta Zoning Ordinance, Chapter 36.

The permit is the main extra step. Section 16-36.004 requires a special administrative permit (SAP), which is an approval given by the planning director. The director must approve it "prior to the issuance of a building permit," and the applicant sends "one copy of the full SAP application to the appropriate Neighborhood Planning Unit (NPU) chair." The application fee for a development under 50,000 square feet is $500, under Section 6-1007 of the City Code.

The overlay sets no parking minimum for homes. Section 16-36.020 says "there will be no minimum parking requirement within the BeltLine Overlay District," apart from restaurants and some food uses. For homes the overlay sets a maximum: one space for each one-bedroom unit and two for each unit with two or more bedrooms. Going above the maximum needs a special exception from the Board of Zoning Adjustment.

Two smaller rules help duplexes. Independent driveways are not required for single- and two-family dwellings. And the overlay's rule on walkways to entrances does not apply to single-family and two-family structures, under an amendment made by ordinance 26-O-1001 on February 25, 2026.

The Affordable Housing Rule, Step by Step

Atlanta added Chapter 36A by Ord. No. 2017-72 on November 29, 2017. For a rental development of ten or more new rental homes in the overlay, Section 16-36A.004 gives two options. Area median income (AMI) is the middle household income for the Atlanta metro area, as published by the US Department of Housing and Urban Development (HUD).

• Option 1: at least 15 percent of the rental units are marketed to households with an income that does not exceed 80 percent of AMI.
• Option 2: at least 10 percent of the rental units are marketed to households at or under 60 percent of AMI.

Four conditions attach to those units. The rent may be no more than 30 percent of the household's gross monthly income. The units stay affordable for "the greater of 20 years from the date of the issuance of the certificate of occupancy" or a longer period if state law allows. They must match the market-rate units in finishes and in the mix of bedroom counts. And they must be spread through the building.

The commitment is recorded. Section 16-36A.006 says "no temporary or final certificate of occupancy shall be issued until a LURA" is recorded. A LURA is a Land Use Restrictive Agreement, a document recorded against the property that requires later owners to keep the affordable rents.

The fee option and the density bonus

A covered project may pay an in-lieu fee, which is a payment made in place of building the affordable units. The fee goes into the BeltLine Affordable Workforce Housing In-Lieu Fee Trust Fund before the building permit is issued, and it is set for each BeltLine subarea. Section 16-36A.007 says: "Rates will be published and available on the City of Atlanta Department of City Planning website no later than June 1 of each year and will be effective July 1 of that same year." That City website returned an access error to VanPlex, so this page prints no fee amounts. Ask the Department of City Planning for the current rate sheet.

A project that complies receives a bonus. Section 16-36A.008 says it "shall be entitled to a 15 percent floor-area ratio increase." Floor area ratio is the floor area of the building divided by the area of the lot.

The Three Overlay Chapters Compared

Source: Atlanta Zoning Ordinance, Chapters 36A, 37 and 41, linked in the second column.

The Westside overlay uses the same rule. Its Section 16-37.004 covers a development "upon which ten or more new residential rental dwelling units will be constructed at one location," with the same choice of 15 percent at 80 percent of AMI or 10 percent at 60 percent.

Chapter 41 is the newest of the three. It began in 2021 as the Westside Park Affordable Workforce Housing Overlay. Ordinance 25-O-1334, approved September 11, 2025, expanded it and renamed it the Northwest Atlanta Workforce Housing Overlay District. Its first section says it "shall apply to all residential developments of ten or more new residential rental and/or residential for sale dwelling units." It is the one chapter of the three that counts homes built for sale.

Other Rules That Start at Ten Homes, and One That Starts at Five

Ten homes is a threshold that Atlanta's code uses more than once. The affordable housing exemption in the impact fee chapter, Section 19-1016, gives a 20 percent exemption from development impact fees only to developments of ten or more new units that meet income targets. A project of two to four homes cannot use it and pays the full impact fee for each home.

Decatur, a separate city with its own code, sets its threshold lower. Its Unified Development Ordinance requires any new development of at least five homes or lots to make at least 10 percent of them inclusionary, and it says an ADU added to a four-unit walk up flat makes the rule apply. The metro page explains Decatur's code.

One more recent change sits outside these overlays. Ordinance 24-O-1586, dated June 11, 2025 in the code's history notes, added an affordable housing density bonus in the MRC-3 district. It is one of the 2024 to 2026 amendments that left the number of homes allowed in the R and RG districts unchanged.

What the Proposed Rewrite Says About Parking Near Transit

Atlanta's proposed zoning rewrite, ATL Zoning 2.0, has not been adopted. Its draft would set parking by zones across the whole city. The text attached to ordinance 26-O-1508 proposes that a lot within a half mile walking distance of a high-capacity transit station may use the rules of Parking Zone 1, where the draft sets no minimum for homes. Until Council votes, the BeltLine Overlay's own parking section is the rule inside the overlay. The ATL Zoning 2.0 page has the status.

Where to Go Next

Related on VanPlex: the Atlanta multiplex guide overview, the California multiplex guide and the missing middle guide.

Frequently Asked Questions

Official sources (checked October 2026)