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  1. Zoning
  2. Mobile, AL
  3. R-B

Mobile, AL · zoning record

R-B zoning in Mobile.

The dimensional standards that govern what you can build in the R-B district, straight from Mobile's ordinance, with every figure quoting its source. Check a specific address to see how these rules apply to a real lot.

Free · Every figure cited · Read from the current code (2026-10-02)

R-B dimensional standards.

These are the letter-of-the-law limits for the base R-B district. Overlays (historic, neighborhood plan, and similar) can tighten them; a specific address check resolves the overlays that actually apply.

Maximum height

45 ft

How tall the building may be.

“4 Height (maximum) 45 feet”Sec. 64-2-8 Residential Business (R-B) › 64-2-8 · Mobile code · read 2026-10-02

Minimum lot size

4,000 sf

Smallest conforming lot.

“1 Lot area ( minimum) 4,000 square feet per dwelling unit”Sec. 64-2-8 Residential Business (R-B) › 64-2-8 · Mobile code · read 2026-10-02

Front setback

5 ft

Required space from the front line.

“6 Front Yard (minimum) 5 feet”Sec. 64-2-8 Residential Business (R-B) › 64-2-8 · Mobile code · read 2026-10-02

Maximum building coverage

75 %

Share of the lot the building footprint may cover.

“3 Coverage (maximum) 75%”Sec. 64-2-8 Residential Business (R-B) › 64-2-8 · Mobile code · read 2026-10-02

Sources

Every figure above is quoted verbatim from the current ordinance. We never substitute a typical-for-zone default: a field absent from the record shows nothing, not a guess.

Informational only — not a permit, appraisal, or professional engineering opinion. Verify with your local planning department before acting on it. See Terms and data sources.

Other Mobile districts on record.

R-2R-1R-A

Check a real Mobile lot against R-B.

See how these standards resolve on a specific parcel, with the overlays that actually apply, in about 20 seconds.

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