What does R-1 zoning mean in Mobile?

R-1 is Mobile's base single-family district under the Unified Development Code, permitting one detached single-family home per lot. It sits between the large-lot R-A Residential Agriculture district and the higher-density R-2 and R-3 districts.

How is Mobile's Unified Development Code different from a standard zoning ordinance?

Mobile's 2022 UDC merges what used to be separate zoning, subdivision, and design-standard ordinances into a single Chapter 64 document, so a single project review touches one integrated code rather than multiple. It also layers sub-districts and neighborhood area plans on top of base zoning that can supersede standard district rules.

What zoning applies to downtown Mobile?

Downtown falls under the Downtown Development District (DDD), which uses a form-based transect system — T-3 through T-6 — rather than Mobile's conventional use-based Article 2 districts. Developers should check Appendix A of the UDC rather than the standard district table for downtown parcels.

Mobile, Alabama · city zoning districts · 17 districts

Mobile, AL zoning map & districts

Mobile consolidated its zoning, subdivision, and design-standard ordinances into a single Unified Development Code (Chapter 64 of the Code of Ordinances), adopted July 2022. Article 2 establishes the base zoning districts — a graduated residential series (R-A through R-3), business districts running from Historic Business through General Business, a maritime-specific set of districts (Maritime Mixed, Light, and Heavy) reflecting the working port, and light/heavy industrial classes — and every district is cross-referenced against a citywide Future Land Use Map (FLUM) that guides, but does not mandate, where new districts should be located.

The code Mobile Unified Development Code

Mobile zoning map

Mobile's Neighborhood Development Department publishes the Unified Development Code articles and zoning map through the city's "Build Mobile" development-services portal.

There is no link to the official map here yet — confirm current district boundaries directly with the Mobile planning or zoning department.

A published summary is never the authority. The adopted ordinance and the city's official zoning map govern, and both change — verify the district and every standard on your parcel before you rely on it.

How zoning works in Mobile

The UDC layers sub-districts (Urban, Suburban, Conservation) and neighborhood-specific area plans — Africatown, the Peninsula, Village of Spring Hill, and a Historic District Overlay — on top of base zoning, and these area plans can supersede base standards for a given site. Downtown falls under a separate Downtown Development District (DDD) that uses a form-based transect system (T-3 through T-6) rather than conventional use-based zoning, so downtown parcels need to be checked against Appendix A rather than the standard Article 2 district table.

Mobile zoning districts by family

The 17 district codes below are the ones that decide most projects in Mobile, grouped by what they are for rather than by the order the ordinance prints them.

Key districts in the Mobile Unified Development Code — a curated reference, not the exhaustive list. Confirm against the current adopted code.
Code	District	What it is for
Residential 4 districts
R-A	Residential Agriculture	Large-tract agricultural and very-low-density residential land.
R-1	Single-Family Residential	Base detached single-family district.
R-2	Two-Family Residential	Duplexes and two-family dwellings.
R-3	Multi-Family Residential	Apartment-scale multifamily development.
Mixed-use 2 districts
R-B	Residential Business	Transitional district blending residential and light commercial uses.
B-5	Office Distribution	Office and light distribution/warehouse hybrid uses.
Commercial 5 districts
H-B	Historic Business	Commercial district tailored to Mobile's historic commercial corridors.
B-1	Buffer Business	Lower-intensity commercial buffering residential areas from more intensive uses.
B-2	Neighborhood Business	Small-scale neighborhood-serving retail and services.
B-3	Community Business	Community-scale commercial centers.
B-4	General Business	Broad general commercial uses along major corridors.
Downtown / core 2 districts
T-5.1	Mixed Use - Medium Intensity	Downtown transect zone; 'DDD' itself is not an applied zone code, the actual T-3 through T-6 transect codes are (Appendix A).
T-6	Mixed Use - High Intensity	Highest-intensity downtown transect zone within Mobile's form-based Downtown Development District framework.
Industrial 3 districts
MM	Maritime Mixed	Mixed maritime uses tied to the working port.
I-1	Light Industry	Light manufacturing and warehousing.
I-2	Heavy Industry	Heavier industrial uses with fewer use restrictions.
Special purpose 1 district
PD	Planned Development	Negotiated standards for large or mixed-use tracts.

Mobile zoning — common questions

What does R-1 zoning mean in Mobile?: R-1 is Mobile's base single-family district under the Unified Development Code, permitting one detached single-family home per lot. It sits between the large-lot R-A Residential Agriculture district and the higher-density R-2 and R-3 districts.
How is Mobile's Unified Development Code different from a standard zoning ordinance?: Mobile's 2022 UDC merges what used to be separate zoning, subdivision, and design-standard ordinances into a single Chapter 64 document, so a single project review touches one integrated code rather than multiple. It also layers sub-districts and neighborhood area plans on top of base zoning that can supersede standard district rules.
What zoning applies to downtown Mobile?: Downtown falls under the Downtown Development District (DDD), which uses a form-based transect system — T-3 through T-6 — rather than Mobile's conventional use-based Article 2 districts. Developers should check Appendix A of the UDC rather than the standard district table for downtown parcels.

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The parcel layer lands in the order demand does. Illinois went first because that's where the deals were; the next state is decided by who tells us what they're trying to underwrite. Tell us where you're building and what you wanted to run — you'll hear from us when Alabama opens, and sooner if we need a test parcel.

Keep reading

← Alabama zoning — who holds the zoning power in Alabama, under which enabling statute, and the reforms that override local rules.

Other Alabama cities

The zoning reference → — every state, plus city-level district guides like this one.

Mobile zoning summaries on this page are provided for information, not legal advice. Confirm every project against the current adopted code for the jurisdiction.