Birmingham, AL Zoning
Districts & Requirements
Every zoning district in Birmingham with permitted uses, setbacks, height limits, and density requirements — in plain English. Birmingham uses a traditional Euclidean zoning code (Ordinance No. 90-130, adopted 1990, amended through 2025). Districts scale from E-1 Estate through R-7 high-density multifamily, with six commercial districts (B-1 through B-6) and three industrial tiers. The city is actively rezoning neighborhoods through Community Rezoning Plans — check whether your target area has a pending rezone before buying.
18
Zoning districts
7
Overlay districts
198,000
Population
2025
Code adopted
Quick Reference
Find your district, see what you can do. Click any row for details.
| District | At a glance | Height | Coverage |
|---|---|---|---|
| E-1 | Half-acre estate lots. One home, large setbacks. No subdivision potential without rezoning. | 35 ft | Not specified in code |
| R-1 | 15,000 SF lots, 90-ft wide. Traditional single-family in established neighborhoods. | 35 ft | Not specified in code |
| R-2 | 10,000 SF lots, 75-ft wide. Most common single-family district. Standard infill product. | 35 ft | Not specified in code |
| R-3 | 6,000 SF lots, 50-ft wide. Smaller infill lots. Best single-family economics in the city. | 35 ft | Not specified in code |
| R-4 | Duplexes and semi-attached homes. 3,000 SF per unit for two-family. First step into income property. | 35 ft | Not specified in code |
| R-4A | Fourplexes by right. 2,500 SF per unit. Missing middle housing in a single-family form. | 35 ft | Not specified in code |
| R-5 | Apartments at 2,000 SF per unit, 35-ft height. Small apartment buildings and townhouse rows. | 35 ft | Not specified in code |
| R-6 | Mid-rise apartments, 45-ft base, up to 80 ft with extra setbacks. 1,500 SF per unit density. | 45 ft (up to 80 ft with additional setbacks) | Not specified in code |
| R-7 | Highest-density residential. 500 SF per unit at 4+ stories. High-rise apartments near downtown. | 45 ft (up to 80 ft with additional setbacks) | Not specified in code |
| B-1 | Corner-store commercial. 35-ft height, neighborhood-serving retail. No drive-throughs. | 35 ft | Not specified in code |
| B-2 | Auto-oriented commercial at 75 ft. Car lots, hotels, shopping centers. Birmingham's strip-mall district. | 75 ft | Not specified in code |
| B-3 | No height cap, no setbacks, no lot minimums. Build anything commercial. Maximum flexibility. | No limit (FAA restrictions only) | Not specified in code |
| B-4 | Downtown core. No height cap, no setbacks, no parking required. Build as tall as FAA allows. | No limit (FAA restrictions only) | Not specified in code |
| B-5 | Office park and mixed commercial. 35 ft base, up to 100 ft with bonus setbacks. 75% coverage cap. | 35 ft (up to 100 ft with 1 ft setback per 2 ft above 35) | 75% nonresidential / 60% residential |
| MXD | Master-planned mixed-use. Residential, commercial, and industrial on one site. PUD-style flexibility. | Per approved plan (45+ ft typical) | Per approved plan |
| M-1 | Warehousing, light manufacturing, flex space. Allows B-3 commercial uses plus industrial. | 45 ft | Not specified in code |
| M-2 | Heavy manufacturing and processing. Fewest restrictions in the code. Large buffer requirements. | No limit (FAA restrictions only) | Not specified in code |
| O-I | Offices, hospitals, schools, churches. No retail except accessory. Campus-style setbacks. | 45 ft | Not specified in code |
Residential — Single-Family
4 districts in Birmingham
E-1
Estate DistrictLarge-lot single-family on half-acre minimums. 100-ft wide lots with 40-ft front and rear setbacks eat most of the buildable area. If you're looking at E-1, you're building one custom home.
What you can build
- ✓Single-family dwelling
- ✓Accessory structures
- ✓Home occupation
- ✓Church or school (25 ft from side lot lines)
- ✓Community garden
- ✗Duplexes or multifamily
- ✗Commercial or retail
- ✗Any lot split below half an acre
Key numbers
- Height
- 35 ft
- Lot min
- 21,780 SF (0.5 acres)
- Width
- 100 ft
- Coverage
- Not specified in code
- Front
- 40 ft
- Side
- 15 ft each side
- Rear
- 40 ft
What this means in practice
40-ft front + 40-ft rear + two 15-ft sides leaves a narrow buildable envelope. On a 100 x 218 lot, your footprint maxes around 9,660 SF — generous for a custom home but the land cost per buildable SF is high. E-1 parcels near Crestwood or Mountain Brook are priced for the address, not the zoning.
R-1
Single-Family R-1Large single-family lots in Birmingham's older established neighborhoods. 15,000 SF minimum with wide setbacks. Common in Forest Park, Crestline, and parts of Homewood-adjacent areas.
What you can build
- ✓Single-family dwelling
- ✓Accessory structures
- ✓Home occupation
- ✓Church or school
- ✗Duplexes or multifamily
- ✗Commercial or retail
- ✗Subdivision below 15,000 SF
Key numbers
- Height
- 35 ft
- Lot min
- 15,000 SF
- Width
- 90 ft
- Coverage
- Not specified in code
- Front
- 40 ft
- Side
- 8 ft min / 18 ft total both sides
- Rear
- 40 ft
What this means in practice
80 ft of front-to-rear setbacks on a 15,000 SF lot severely constrains the buildable area. On a 90 x 167 lot, you get roughly a 74 x 87 ft buildable rectangle — about 6,400 SF of footprint. Works for a 3,000-4,000 SF custom home. Spec builders avoid R-1 because the land premium doesn't pencil against the unit yield.
R-2
Single-Family R-2Birmingham's workhorse single-family district. 10,000 SF lots with more manageable setbacks than R-1. Found across Avondale, East Lake, Woodlawn, and most established residential neighborhoods.
What you can build
- ✓Single-family dwelling
- ✓Accessory structures
- ✓Home occupation
- ✓Church or school
- ✗Duplexes or multifamily
- ✗Commercial or retail
Key numbers
- Height
- 35 ft
- Lot min
- 10,000 SF
- Width
- 75 ft
- Coverage
- Not specified in code
- Front
- 30 ft
- Side
- 7 ft min / 16 ft total both sides
- Rear
- 35 ft
What this means in practice
On a standard 75 x 133 lot: 30-ft front + 35-ft rear leaves 68 ft of depth, and 16 ft total sides leaves 59 ft of width — about 4,000 SF of footprint. Two stories gets you a 3,200-3,800 SF home. This is the bread-and-butter infill product in neighborhoods like Avondale and Crestwood South where land is $5-12/SF.
R-3
Single-Family R-3Small-lot single-family. 6,000 SF minimum, 50-ft wide — the tightest single-family product Birmingham allows. Reduced setbacks make the footprint math work for affordable new construction.
What you can build
- ✓Single-family dwelling
- ✓Accessory structures
- ✓Home occupation
- ✓Church or school
- ✗Duplexes or multifamily
- ✗Commercial
Key numbers
- Height
- 35 ft
- Lot min
- 6,000 SF
- Width
- 50 ft
- Coverage
- Not specified in code
- Front
- 25 ft
- Side
- 5 ft min / 14 ft total both sides
- Rear
- 25 ft
What this means in practice
25-ft front + 25-ft rear leaves 70 ft of depth on a 120-ft-deep lot. 14 ft total sides on a 50-ft lot leaves 36 ft of width — about 2,520 SF of footprint. Two stories gets you 4,500-5,000 SF gross. This is the sweet spot for affordable spec homes in neighborhoods like North Birmingham, Ensley, and West End where lot prices are $2-5/SF.
Residential — Two-Family
1 district in Birmingham
R-4
Two-Family & Semi-AttachedBirmingham's duplex district. Allows two-family dwellings and semi-attached homes alongside single-family. Same 35-ft height as R-3 but the duplex entitlement doubles your rental income on one lot.
What you can build
- ✓Single-family dwelling
- ✓Two-family dwelling (duplex)
- ✓Semi-attached dwelling
- ✓Accessory structures
- ✗Triplexes or larger multifamily
- ✗Commercial or retail
Key numbers
- Height
- 35 ft
- Lot min
- 5,000 SF (SFR) / 3,000 SF per unit (duplex)
- Width
- 50 ft (20 ft semi-attached)
- Coverage
- Not specified in code
- Front
- 25 ft
- Side
- 5 ft min / 14 ft total (0 ft interior semi-attached)
- Rear
- 25 ft
What this means in practice
A duplex on a 6,000 SF R-4 lot pencils well: two 1,200-1,400 SF units at $1,100-1,400/month each. Semi-attached projects eliminate interior side yards — build wall-to-wall on the shared lot line. If you're assembling lots for semi-attached rows, the 20-ft minimum width per unit means five townhome-style units on a 100-ft frontage.
Residential — Medium Density
1 district in Birmingham
R-4A
Medium Density ResidentialBirmingham's missing middle district. Allows up to four units per structure plus attached and semi-attached homes. Same setbacks as R-4 but the fourplex entitlement makes this significantly more valuable for small-scale investors.
What you can build
- ✓Single-family dwelling
- ✓Duplex
- ✓Attached or semi-attached dwelling
- ✓Multifamily up to 4 units per structure
- ✗Apartments over 4 units
- ✗Commercial or retail
Key numbers
- Height
- 35 ft
- Lot min
- 5,000 SF (SFR) / 2,500 SF per unit (multifamily)
- Width
- 50 ft (18 ft attached)
- Coverage
- Not specified in code
- Front
- 25 ft
- Side
- 5 ft min / 14 ft total (0 ft interior attached)
- Rear
- 25 ft
What this means in practice
A fourplex on a 10,000 SF lot (2,500 SF per unit) at 35 ft height: two-story building with four 900-1,100 SF units. At $900-1,200/month per unit, you're looking at $3,600-4,800/month gross on a lot that might cost $15,000-30,000 in transitional neighborhoods. The cap rate math is compelling in Woodlawn, East Lake, and North Birmingham.
Residential — Multifamily
3 districts in Birmingham
R-5
Multiple Dwelling R-5Birmingham's entry-level apartment district. Unlimited units per structure at 2,000 SF per unit density. 35-ft height keeps projects to 2-3 stories. Also allows condominiums, private clubs, and institutional uses.
What you can build
- ✓Single-family, duplex, or multifamily
- ✓Attached and semi-attached dwellings
- ✓Residential condominiums
- ✓Private clubs and lodges
- ✓Day care facilities
- ✗Commercial or retail
- ✗Industrial
Key numbers
- Height
- 35 ft
- Lot min
- 5,000 SF (SFR) / 2,000 SF per unit (multifamily)
- Width
- 50 ft (16 ft attached)
- Coverage
- Not specified in code
- Front
- 25 ft
- Side
- 5 ft min / 14 ft total
- Rear
- 25 ft
What this means in practice
A half-acre R-5 site = 21,780 SF / 2,000 SF per unit = 10 units. At 35-ft height (3 stories), 50% coverage yields ~10,890 SF footprint x 3 floors = 32,670 SF gross — enough for 10-12 apartments at 800-1,000 SF each. Surface parking eats a third of the site. This is where most of Birmingham's garden-style apartments live.
R-6
Multiple Dwelling R-6Mid-density multifamily with a height bonus. 45 ft by right, up to 80 ft if you add 1 ft of setback per 4 ft of height above 45. The 1,500 SF per unit density and reduced lot area for 4+ story buildings make this the go-to district for larger apartment projects.
What you can build
- ✓All R-5 uses
- ✓Mid-rise apartment buildings
- ✓Condominiums
- ✓Senior housing
- ✗Commercial or retail (standalone)
- ✗Industrial
Key numbers
- Height
- 45 ft (up to 80 ft with additional setbacks)
- Lot min
- 1,500 SF per unit (1,000 SF for 4+ stories)
- Width
- 50 ft (18 ft attached)
- Coverage
- Not specified in code
- Front
- 25 ft
- Side
- 5 ft min / 14 ft total
- Rear
- 25 ft
What this means in practice
The height bonus is the play: at 80 ft (roughly 7 stories), you add 8.75 ft to each side and rear setback (35 ft above 45 ft / 4). On a 1-acre site at 1,000 SF per unit density for 4+ stories: 43 units. At Birmingham apartment rents of $1.00-1.50/SF, a 43-unit building at 850 SF average = $36,550-54,825/month gross. Five Points South and Southside are the primary R-6 markets.
R-7
Multiple Dwelling R-7Birmingham's highest-density residential district. Same 45-ft base / 80-ft bonus as R-6 but dramatically higher density — 500 SF per unit for buildings over 4 stories. This is the high-rise apartment entitlement.
What you can build
- ✓All R-5 uses
- ✓High-rise apartment buildings
- ✓Condominiums
- ✓Senior housing towers
- ✗Commercial or retail (standalone)
- ✗Industrial
Key numbers
- Height
- 45 ft (up to 80 ft with additional setbacks)
- Lot min
- 1,000 SF per unit (500 SF for 4+ stories)
- Width
- 50 ft (16 ft attached)
- Coverage
- Not specified in code
- Front
- 25 ft
- Side
- 5 ft min / 14 ft total
- Rear
- 25 ft
What this means in practice
500 SF per unit at 4+ stories is extremely dense by Birmingham standards. A 1-acre site = 43,560 SF / 500 = 87 units. At 80-ft height (7 stories) with structured parking, you're looking at a 150-200 unit project. These sites are rare and valuable — primarily found in Southside, Five Points South, and the UAB corridor. Land trades at $20-40/SF here versus $2-5/SF in most of the city.
Commercial
5 districts in Birmingham
B-1
Neighborhood BusinessSmall-scale neighborhood commercial — the corner store, barbershop, and coffee shop district. Allows residential at R-5 density. No setbacks required except when adjacent to residential districts.
What you can build
- ✓Neighborhood retail and services
- ✓Restaurants (no drive-through)
- ✓Medical and dental offices
- ✓Drugstores
- ✓Laundromats
- ✓Multifamily (R-5 density)
- ✓Farmers markets
- ✗Drive-throughs
- ✗Auto sales or repair
- ✗Warehousing or industrial
- ✗Large-format retail
Key numbers
- Height
- 35 ft
- Lot min
- 5,000 SF (SFR) / 1,000 SF per unit (multifamily)
- Width
- 50 ft (16 ft attached residential)
- Coverage
- Not specified in code
- Front
- None (unless adjacent to E or R district)
- Side
- None (5 ft if adjacent to residential)
- Rear
- None (20 ft if adjacent to residential)
What this means in practice
B-1 is the mixed-use play in Birmingham's walkable neighborhoods. No setbacks on commercial-to-commercial boundaries means you can build lot-line to lot-line. A 5,000 SF B-1 lot in Avondale or Lakeview: ground-floor retail + 4-5 apartments above at 1,000 SF per unit. The mixed income stream is what makes these small sites pencil.
B-2
General BusinessBirmingham's general commercial district. 75-ft height, auto sales, hotels, restaurants with drive-throughs, shopping centers. Also allows dwellings as principal use at high density. This is where the highway-visible commercial goes.
What you can build
- ✓All B-1 uses without service-area limits
- ✓Auto sales and service
- ✓Hotels and motels
- ✓Drive-through restaurants
- ✓Shopping centers
- ✓Dwellings (1,000 SF per unit multifamily)
- ✓Light manufacturing
- ✗Heavy manufacturing
- ✗Salvage yards
- ✗Heavy industrial
Key numbers
- Height
- 75 ft
- Lot min
- None (commercial) / 1,000 SF per unit (residential)
- Width
- None (commercial)
- Coverage
- Not specified in code
- Front
- None (unless adjacent to E or R district)
- Side
- None (5 ft if adjacent to residential)
- Rear
- None (20 ft if adjacent to residential)
What this means in practice
75-ft height with no lot size minimum and no setbacks on commercial boundaries makes B-2 one of the more flexible districts in the code. A 1-acre B-2 site on Parkway East or Highway 280: 5-6 story mixed-use, 40,000+ SF of commercial plus 80+ apartments. The residential density entitlement (1,000 SF per unit) is often overlooked — many B-2 sites are worth more as multifamily than retail.
B-3
Community BusinessBirmingham's most permissive commercial district outside downtown. No height limit (FAA only), no setbacks, no lot minimums. Permits light manufacturing, amusement, mini-warehouses, and the full range of commercial uses.
What you can build
- ✓All commercial uses
- ✓Light manufacturing (furniture, jewelry, cosmetics)
- ✓Indoor/outdoor amusement
- ✓Mini-warehouses
- ✓Hotels
- ✓Dwellings with commercial
- ✓Hospitals and institutions
- ✗Heavy manufacturing
- ✗Salvage or junkyard
- ✗Uses creating objectionable noise, dust, or odor
Key numbers
- Height
- No limit (FAA restrictions only)
- Lot min
- None
- Width
- None
- Coverage
- Not specified in code
- Front
- None
- Side
- None
- Rear
- None
What this means in practice
B-3 is Birmingham's wild card. No dimensional constraints means your project is limited only by building code, parking requirements, and financing. The light manufacturing allowance (furniture, jewelry, medical instruments) makes B-3 attractive for maker spaces and creative economy projects. Found along major corridors like 1st Avenue North and Finley Boulevard.
B-4
Central Business DistrictDowntown Birmingham. Same uses as B-3 but with one critical addition: no off-street parking required. Build lot-line to lot-line, as tall as FAA permits. This is the most valuable commercial zoning in the city.
What you can build
- ✓All B-3 uses
- ✓High-rise office
- ✓Hotels
- ✓Entertainment venues
- ✓Residential towers
- ✓Any commercial use without parking requirements
- ✗Heavy manufacturing
- ✗Uses creating nuisance conditions
Key numbers
- Height
- No limit (FAA restrictions only)
- Lot min
- None
- Width
- None
- Coverage
- Not specified in code
- Front
- None
- Side
- None
- Rear
- None
What this means in practice
No parking requirement is the headline. In every other district, parking drives site design and kills density. In B-4, you can build 100% leasable space. A 10,000 SF downtown lot at 10 stories = 100,000 SF of office or residential — no parking podium eating 30% of your building. Downtown Birmingham land trades at $10-25/SF, and the Opportunity Zone overlay adds a capital gains tax incentive on top.
B-5
Mixed BusinessBirmingham's campus-style mixed business district. Office, institutional, and conditional retail/residential on master-planned sites. The only commercial district with explicit lot coverage limits (75% nonresidential, 60% residential).
What you can build
- ✓Offices and professional services
- ✓Hospitals and nursing homes (with site plan)
- ✓Hotels and motels (with site plan)
- ✓Retail and restaurants (conditional, with site plan)
- ✓Multifamily (conditional, with site plan)
- ✓Indoor/outdoor recreation
- ✗Industrial or manufacturing
- ✗Uses without approved site development plan
- ✗Buildings within 50 ft of A, E, or R district boundaries
Key numbers
- Height
- 35 ft (up to 100 ft with 1 ft setback per 2 ft above 35)
- Lot min
- 2,500 SF per dwelling unit
- Width
- 100 ft
- Coverage
- 75% nonresidential / 60% residential
- Front
- 30 ft
- Side
- 10 ft each (25 ft from perimeter boundary)
- Rear
- 25 ft
What this means in practice
The 100-ft height bonus requires significant extra setbacks — at 100 ft, you need 32.5 ft additional setback per side (1 ft per 2 ft above 35). The 50-ft buffer from residential districts further constrains the site. B-5 works best on large parcels (2+ acres) along corridors like US-280 and I-65 where you can absorb the setbacks and still get meaningful floor area. The site plan requirement adds 2-3 months but gives design flexibility.
Mixed Use
1 district in Birmingham
MXD
Mixed Use DistrictBirmingham's planned mixed-use designation for large-scale developments. Blends residential, office, commercial, cultural, and light industrial uses under one master plan. Height and dimensional standards are set through the approved development plan rather than fixed tables.
What you can build
- ✓Residential (single-family through high-rise)
- ✓Office and professional services
- ✓Retail and restaurants
- ✓Medical and educational institutions
- ✓Cultural and civic uses
- ✓Light industrial (with plan approval)
- ✗Heavy manufacturing
- ✗Uses not included in approved master plan
- ✗Any development without approved site plan
Key numbers
- Height
- Per approved plan (45+ ft typical)
- Lot min
- Per approved plan
- Width
- Per approved plan
- Coverage
- Per approved plan
- Front
- Per approved plan
- Side
- 10 ft (abutting commercial) / 25 ft (abutting residential)
- Rear
- Per approved plan
What this means in practice
MXD gives you maximum entitlement flexibility but requires a full master plan approval process — budget 4-6 months minimum. The trade-off is worth it on large sites (5+ acres) where you want to mix housing types, retail, and office in one development. The City is pushing MXD rezonings as part of the Community Rezoning Plans, especially in transitional areas like Ensley and East Birmingham.
Industrial
2 districts in Birmingham
M-1
Light IndustrialLight industrial and flex space. Permits all B-3 commercial uses plus manufacturing that doesn't create nuisance conditions. Lumber yards, truck terminals, contractor yards, and warehouses. No outdoor storage adjacent to residential without a special exception.
What you can build
- ✓All B-3 commercial uses
- ✓Light manufacturing and assembly
- ✓Warehousing and distribution
- ✓Lumber yards and contractor yards
- ✓Truck terminals
- ✓Veterinary clinics and kennels
- ✗Heavy manufacturing with nuisance impacts
- ✗Outdoor storage adjacent to residential (without special exception)
- ✗Uses creating objectionable noise, smoke, or odor
Key numbers
- Height
- 45 ft
- Lot min
- None
- Width
- None
- Coverage
- Not specified in code
- Front
- 25 ft
- Side
- None (10 ft if adjacent to residential)
- Rear
- None (20 ft if adjacent to residential)
What this means in practice
M-1 is being actively rezoned out of many Birmingham neighborhoods as part of the Community Rezoning Plans. If you own M-1 in Ensley, Pratt City, or East Birmingham, check the pending rezone map — a downzone to B-2 or R-5 could reduce your property's development potential. Conversely, M-1 sites in the Finley Boulevard corridor and near the airport remain strong industrial plays.
M-2
Heavy IndustrialBirmingham's heaviest industrial zoning. Manufacturing, processing, and heavy commercial with minimal use restrictions. Large setbacks buffer adjacent properties. Found primarily in the industrial corridors along I-20/59 and north of downtown.
What you can build
- ✓All M-1 uses
- ✓Heavy manufacturing and processing
- ✓Salvage and recycling operations
- ✓Large-scale warehousing
- ✓Utility installations
- ✗Residential
- ✗Retail (standalone)
- ✗Schools or hospitals
Key numbers
- Height
- No limit (FAA restrictions only)
- Lot min
- None
- Width
- None
- Coverage
- Not specified in code
- Front
- 25 ft
- Side
- None (25 ft if adjacent to residential)
- Rear
- None (25 ft if adjacent to residential)
What this means in practice
M-2 sites near downtown are the long-term rezoning play in Birmingham. The city's Community Rezoning Plans explicitly target heavy industrial areas for downzoning where they abut neighborhoods. An M-2 parcel in North Birmingham or East Birmingham that gets rezoned to MXD or B-2 could double in value. Check the comprehensive plan future land use map before buying.
Office & Institutional
1 district in Birmingham
O-I
Office & InstitutionalProfessional office and institutional uses — hospitals, schools, churches, research labs. Accessory retail (drugstore, cafeteria) allowed only to serve the principal use. Found around UAB, St. Vincent's, and Brookwood medical centers.
What you can build
- ✓Professional and medical offices
- ✓Hospitals and clinics
- ✓Schools and churches
- ✓Cemeteries and mortuaries
- ✓Adult and child care centers
- ✓Accessory retail serving principal use
- ✗Standalone retail
- ✗Restaurants (except as accessory)
- ✗Residential (except accessory)
- ✗Industrial
Key numbers
- Height
- 45 ft
- Lot min
- None
- Width
- None
- Coverage
- Not specified in code
- Front
- 25 ft
- Side
- 10 ft each
- Rear
- 25 ft
What this means in practice
O-I is the institutional buffer zone. The UAB campus expansion has driven significant O-I demand in Southside — medical office rents run $22-30/SF NNN. If you're buying near UAB, the O-I entitlement is worth more than the underlying land in many cases. The restriction on standalone retail means you can't do ground-floor shops without a rezoning to B-1 or B-2.
Development Bonus Program
Birmingham does not have a formal density bonus program like some newer zoning codes. However, the R-6 and R-7 districts allow height above 45 ft with additional setbacks (1 ft per 4 ft of height above 45 ft), effectively trading setbacks for density. The B-5 district offers a similar height bonus up to 100 ft (1 ft per 2 ft above 35 ft). The City's Community Rezoning Plans are creating new MXD districts that can include negotiated density and height in exchange for community benefits — engage Planning early if you want to pursue a rezoning.
Overlay Districts
Highland Park Neighborhood Form-Based Overlay
Birmingham's first form-based overlay, covering the Highland Park neighborhood near Five Points South. Regulates building form, frontage, parking location, and signage across five sub-districts based on frontage type. Buildings over 45 ft require a 10-ft stepback from the front wall. If you're developing in Highland Park, the overlay controls — not the underlying zoning — dictate building form and placement.
Five Points South Historic District
National Register district (1983) covering one of Birmingham's most distinctive walkable neighborhoods. Spanish Revival and Art Deco commercial buildings from the 1920s streetcar era. Certificate of Appropriateness required for exterior modifications visible from public right-of-way. Budget 1-2 months for historic review on any project.
Fourth Avenue Historic District
National Register district (1982) covering 17 contributing buildings on 4th Avenue North — the historic center of Birmingham's Black business district. Development must be compatible with the historic character. The Civil Rights District redevelopment has renewed investor interest in adjacent parcels.
Smithfield Historic District
National Register district (1985/1998) covering one of Birmingham's earliest African American neighborhoods. Bounded roughly by 8th Avenue North, 6th Street North, and 1st Street North. New construction and renovations must respect historic character. Infill lots are available at low prices but historic review adds time and design constraints.
Norwood Boulevard Historic District
National Register district (2001) in an early streetcar neighborhood north of downtown. Planned community from the early 1900s. Historic review required for exterior changes. Close proximity to downtown makes this a target for infill and renovation, but design must match the neighborhood character.
Opportunity Zones (26 Census Tracts)
Birmingham has 26 federally designated Opportunity Zone census tracts covering 77 of the city's 99 neighborhoods — one of the highest concentrations in the Southeast. Capital gains reinvested in OZ-qualified projects can defer and reduce federal income tax. The zones cover downtown, Ensley, Woodlawn, East Lake, North Birmingham, and most transitional neighborhoods. The Birmingham Inclusive Growth Fund provides additional local incentives.
FEMA Flood Overlay
FEMA flood zones affect significant portions of Birmingham, particularly along Village Creek, Valley Creek, and their tributaries. Check flood zone designation before making an offer — it determines foundation requirements, insurance costs, and financing availability. Floodway parcels are effectively unbuildable; flood fringe parcels require elevated first floors.
Frequently Asked Questions
How do I check zoning for a specific property?
Use the City's GIS map at gisweb.birminghamal.gov — enter an address to see the zoning district and any overlays. For questions about what the zoning means for your site, contact the Zoning Division at the Department of Planning, Engineering and Permits (205-254-2478).
What's the difference between R-5, R-6, and R-7?
All three allow multifamily, but the density and height increase dramatically. R-5: 2,000 SF per unit, 35 ft max. R-6: 1,500 SF per unit (1,000 for 4+ stories), 45-80 ft. R-7: 1,000 SF per unit (500 for 4+ stories), 45-80 ft. On a 1-acre site, R-5 yields ~10 units, R-6 yields ~29-43 units, and R-7 yields ~43-87 units. The jump from R-5 to R-7 can increase land value 3-5x.
Are Community Rezoning Plans going to change my zoning?
Possibly. The City is systematically rezoning neighborhoods to align with the 2013 Comprehensive Plan. Key changes include downzoning heavy industrial areas near neighborhoods, creating new MXD mixed-use districts, and establishing Urban Neighborhood districts. Check with Planning for your specific area — Pratt-Ensley, Southern Area, Eastern Area, and Northside-Southside are all in progress.
Can I build apartments in a commercial district?
Yes. B-1 and B-2 allow residential at multifamily density (1,000 SF per unit for B-2). B-3 and B-4 allow dwellings combined with commercial uses. The B-2 residential entitlement is particularly valuable — many B-2 corridor sites pencil better as mixed-use or all-residential than as pure commercial.
What are the Opportunity Zone benefits in Birmingham?
Birmingham has 26 OZ census tracts covering most of the city's transitional neighborhoods. Invest capital gains in a qualified OZ fund, hold for 10+ years, and pay zero capital gains tax on the OZ investment appreciation. Combined with Birmingham's low land costs ($2-10/SF in most OZ tracts), the tax incentive can add 200-400 basis points to your project IRR.
How do height bonuses work in R-6, R-7, and B-5?
In R-6 and R-7, you can exceed 45 ft by adding 1 ft of side and rear setback per 4 ft of height above 45 ft, up to 80 ft total. In B-5, you can exceed 35 ft by adding 1 ft of setback per 2 ft of height above 35 ft, up to 100 ft total. The extra setbacks reduce your buildable footprint — run the math to confirm the additional height offsets the lost floor area.
Is my property in the City of Birmingham or unincorporated Jefferson County?
This matters — Jefferson County uses a separate zoning resolution with different districts and standards. Check jurisdiction on the GIS map. Properties in Mountain Brook, Homewood, Vestavia Hills, and Hoover have their own municipal codes. If you're near city limits, annexation may be possible and would change your zoning.
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