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Zoning Guide

ADU Rules in Hoover, Alabama

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ADU Rules in Hoover, Alabama

Hoover is a suburban city in Jefferson and Shelby counties, south of Birmingham. As a primarily single-family residential community, Hoover has more restrictive ADU regulations compared to denser urban areas. ADUs require compliance with accessory structure standards under the city's Zoning Ordinance.

Permitted ADU Types

  • Detached ADU: Allowed in select residential zones, may require conditional use approval
  • Attached ADU: An addition to the primary home with a separate entrance
  • Garage Conversion: Converting an existing detached garage to a dwelling unit (typically requires conditional use permit)

Size Limits

ADU Type Maximum Size
Detached ADU 700–900 sq ft depending on zone
Attached ADU 35–40% of primary dwelling floor area
Garage Conversion Existing footprint

Setbacks

  • Front: Must meet base zone standard (typically 30–35 ft in R-1)
  • Side: 5–7 feet minimum
  • Rear: 10–15 feet minimum
  • Separation: 10 feet minimum between detached ADU and main structure

Height

  • Detached accessory structures: Maximum 15 feet
  • Must not exceed the height of the primary dwelling

Conditional Use Process

In most single-family zones, an ADU requires a Conditional Use Permit from the Hoover Planning & Zoning Board. This involves a public hearing and review of the project's compatibility with the neighborhood.

Owner Occupancy

Owner occupancy of the primary dwelling is required. Non-owner-occupied properties are not permitted to have a separate ADU rental.

Parking

Two off-street parking spaces are required for the ADU (in addition to parking for the primary dwelling).

Permit Process

  1. Pre-application consultation: Strongly recommended — contact Planning & Zoning
  2. Conditional use application: Submit application with applicable filing fee (verify current fee with Planning & Zoning)
  3. Public hearing: Scheduled before the Planning & Zoning Board
  4. Board approval: Conditions may be attached
  5. Building permit: Apply after CUP approval
  6. Inspections and CO: Required before occupancy

Contact

Hoover Planning & Zoning Department 100 Municipal Lane, Hoover, AL 35216 Phone: (205) 444-7503 Website: hooveral.org/Planning-Zoning

Disclaimer: Verify current requirements with the Hoover Planning & Zoning Department before starting any project.

More about Hoover Zoning

Sources

  1. Hoover Zoning Ordinance — Accessory Structures·library.municode.com·Accessed 2026-04-07·Direct link

FAQ

Are ADUs allowed in Hoover, Alabama?
Hoover allows accessory structures on residential lots but has relatively restrictive standards for accessory dwelling units. In many single-family zones, a separate dwelling unit within an accessory structure requires a conditional use permit.
What is the maximum ADU size in Hoover?
Accessory dwelling units in Hoover are generally limited to 700–900 square feet depending on the zone and lot size.
Does Hoover require owner occupancy for an ADU?
Yes. Hoover requires owner occupancy of the primary residence when an accessory dwelling unit is present on the property.