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Zoning Guide

ADU Rules in Pelham, Alabama

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ADU Rules in Pelham, Alabama

Pelham is a fast-growing suburb in Shelby County between Birmingham and Alabaster. As primarily a single-family residential community, many neighborhoods have HOA restrictions that may limit ADU construction. The city's Zoning Ordinance governs baseline standards.

Permitted ADU Types

  • Detached ADU: Standalone structure where permitted by zone and HOA
  • Attached ADU: Addition to primary home with separate entrance
  • Garage Conversion: Subject to HOA approval and zoning compliance

Size Limits

ADU Type Maximum Size
Detached ADU 750 sq ft or 35–40% of primary dwelling
Attached ADU 35–40% of primary dwelling floor area
Garage Conversion Existing footprint

Setbacks

  • Front: Must meet base zone standard (typically 25–30 ft)
  • Side: 5 feet minimum
  • Rear: 10 feet minimum
  • Separation from primary: 10 feet minimum

Height

  • Detached ADU: Maximum 15 feet
  • Cannot exceed height of primary dwelling

HOA Restrictions

Check CC&Rs for your subdivision. HOA restrictions are legally enforceable and may prohibit ADUs even if city zoning permits them.

Owner Occupancy

Owner occupancy of the primary dwelling or ADU is required.

Parking

One additional off-street parking space is required per ADU.

Permit Process

  1. HOA review: Obtain HOA approval if applicable
  2. Zoning check: Confirm eligibility with Pelham Planning & Zoning
  3. Submit plans: Architectural drawings and site plan
  4. Planning review: Zoning compliance review
  5. Building permit: Issued by Building Department
  6. Inspections: All required phases must pass
  7. Certificate of Occupancy: Required before occupancy

Contact

Pelham Planning & Zoning Department 3162 Pelham Pkwy, Pelham, AL 35124 Phone: (205) 620-6410 Website: pelhamal.us/planning-zoning

Disclaimer: Verify current requirements with the Pelham Planning & Zoning Department and your HOA before starting any project.

More about Pelham Zoning

Sources

  1. Pelham Zoning Ordinance — Residential Districts·library.municode.com·Accessed 2026-04-07·Direct link

FAQ

What is the maximum ADU size in Pelham?
Where permitted, ADUs in Pelham are generally limited to 750 square feet or 35–40% of the primary dwelling's floor area.
Do HOAs in Pelham restrict ADUs?
Yes. Many Pelham neighborhoods have HOA restrictions. Always verify with your HOA before planning an ADU.