Mobile's Swimming Pools & Spas: The Rules That Matter

Every city handles swimming pools & spas a little differently. In Mobile, Alabama, there are 4 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Pool Permits

Residential swimming pools in Mobile require a building permit from Build Mobile and must meet the Alabama-adopted IRC Appendix G/AG105 barrier rules: a 48-inch fence, gates that are self-closing and self-latching, openings small enough to block a 4-inch sphere, and a high gate latch. Commercial/public pools are also regulated by the Mobile County Health Department.

Key details: City Permit: Required from Build Mobile. Building Code: AL-adopted IRC, Appendix G / AG105. Min Fence Height: 48 inches above grade. Opening Test: No 4-inch sphere may pass. Gate Hardware: Self-closing, self-latching, opens out.

Installing or filling a pool without a building permit, missing or non-compliant barrier, missing self-closing/self-latching gate hardware, or operating a public/semi-public pool without a Mobile County Health Department permit is a code violation. Build Mobile may issue stop-work orders, demand retroactive permitting, and assess fines; the Health Department may close non-compliant public pools.

Fencing Requirements

Mobile County requires all outdoor pools to be enclosed by a fence at least 4 feet tall with a maximum 2-inch bottom gap. Gates must be self-closing and self-latching with latches at least 45 inches above ground.

Key details: Fence Height: 4 feet minimum. Bottom Gap: 2 inches maximum. Latch Height: 45 inches above ground. Gate: Self-closing, self-latching required. Openings: No larger than 4 inches.

Pools without proper barriers face code enforcement, fines, and may need to be drained until compliance is achieved.

This is not one of those rules that cities tend to ignore. Mobile actively enforces its fencing requirements requirements.

Safety Rules

Mobile requires building permits for pool construction. Pools must comply with safety standards including fencing, electrical bonding, GFCI protection, and anti-entrapment drain covers.

Key details: Permit: Building permit required. Electrical: GFCI and bonding required. Drains: Anti-entrapment covers required. Health Dept.: Mobile County rules apply. Inspection: Final inspection before use.

Pools without permits must be brought into compliance. Safety violations are enforced through building inspectors.

Above-Ground Pools

Mobile applies the same barrier requirements to above-ground pools. Pools with walls at least 4 feet tall may serve as their own barrier if the ladder is removable or lockable.

Key details: Barrier: 4-foot walls or separate fence. Ladder: Must be removable or lockable. Permit: May be required. Electrical: GFCI required.

Non-compliant pools face code enforcement. Pools without barriers may need to be drained.

The Bottom Line

Mobile's swimming pools & spas rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Mobile is broadly strict or permissive.

All of the above reflects Mobile's municipal code as of our last review. If you need specifics on fines, exemptions, or filing requirements, the detailed ordinance pages linked above have the full breakdown.