Mobile's Sign Regulations: The Rules That Matter
Every city handles sign regulations 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.
Window Signs
In Mobile's commercial and industrial zoning districts, window signage on a single-establishment site is capped at 20 percent of window area, with a 200-square-foot ceiling, under UDC § 64-4-14(K).
Key details: Commercial/industrial cap: 20% of window area. Size ceiling: 200 sq ft maximum. Historic district cap: also 20% of window area. Governing law: UDC § 64-4-14(K).
Oversized window signage is treated as an illegal sign under § 64-4-14(G): the director can order it brought into conformance or removed, and new sign permits are withheld until it is.
Political Signs
Mobile allows political signs on private property in every district, capped by size and a 7-day post-election removal deadline.
Key details: Removal deadline: 7 days after election. Residential max: 4 sq ft per face. Commercial max: 32 sq ft per face. Right-of-way setback: 10 feet.
Signs left up more than seven days after the election, placed on public property, or exceeding the four/thirty-two square foot caps violate § 64-4-14(B) and are subject to the sign chapter's removal procedures.
Garage Sale Signs
Yard and garage sale signs in Mobile's public rights-of-way are allowed only from 4 p.m. Friday to 8 a.m. Monday, capped at 24 by 24 inches and 48 inches tall, and never on trees or poles.
Key details: Allowed hours: Fri 4pm to Mon 8am. Max size: 24 x 24 inches. Max height: 48 inches. Trees/poles: Never allowed. Fine: $25 per sign.
A sign left out past 8 a.m. Monday or otherwise violating Sec. 54-123–54-125 can be removed and disposed of by the city at the owner's expense; each violating sign carries a $25 fine, and each day continues as a separate offense.
Digital Billboards
Mobile allows off-premise digital billboards in commercial and industrial zones but caps how fast images can change, bans blinking or scrolling effects, and sets buffers from residential property.
Key details: Permit fee: $250 per billboard structure. Message change rate: no faster than every 8 seconds. Residential buffer (off-premise): 500 feet minimum. Spacing between digital signs: 3,000 feet. Max brightness: 5,000 nits day / 500 nits night.
A digital billboard that malfunctions into flashing, movement, or scrolling must be restored to a static default image within 24 hours or is treated as an illegal sign subject to a director's removal order.
The Bottom Line
Mobile's sign regulations 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.
This guide is based on Mobile's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.