FENCE RULES – MOBILE (COUNTY), ALABAMA
OVERVIEW
Residential fences are permitted on private property within Mobile County, subject to local regulations. This page applies to properties in the unincorporated areas of Mobile County; incorporated municipalities may regulate fences under their own ordinances.
Mobile County does not have zoning in unincorporated areas. Fence-related rules appear through Mobile County Inspection Services permit guidance, the Mobile County Building Code and amendments, the Mobile County Flood Damage Prevention Ordinance, Mobile County right-of-way permitting guidance, the Subdivision Regulations of Mobile County, Alabama, animal-control requirements, and property-maintenance rules such as the Mobile County Junk Control Ordinance.
This page focuses on typical single-family residential fencing. If the jurisdiction’s adopted materials do not state a specific limit or requirement, this page notes that the code does not specify one.
Compiled From Mobile County Inspection Services permit guidance, Mobile County Building Code Adoption and Amendments, Mobile County Development and Zoning guidance, Mobile County Right of Way Permit guidance, Subdivision Regulations of Mobile County, Alabama, Mobile County Flood Damage Prevention Ordinance, Mobile County Animal Control Ordinances, and Mobile County Junk Control Ordinance as of May 2026.
GOVERNANCE
Mobile County fence rules are administered through several county functions rather than through a consolidated fence ordinance.
• Governing Authority: The Mobile County Commission is the governing authority for unincorporated Mobile County.
• Inspection Services: Mobile County Inspection Services regulates construction, demolition, alteration, and repair of structures in unincorporated Mobile County and administers plan review, permitting, and inspection for work subject to the adopted building codes and the Mobile County Flood Damage Prevention Ordinance.
• Adopted Building Codes: Mobile County has adopted the 2018 International Building Code, 2018 International Residential Code, 2018 International Swimming Pool and Spa Code, and related local building-code amendments. These adopted codes are separate from ordinary zoning regulation.
• Development and Zoning: Mobile County states that there is no zoning in the unincorporated areas of Mobile County. Development permitting is described through land-disturbance / commercial site-plan review and Inspection Services building permits, not through county zoning districts.
• Engineering and Subdivision Review: Mobile County Engineering and the County Engineer administer subdivision review, plat review, road and drainage infrastructure review, and right-of-way permit routing where those topics apply.
• Floodplain Administration: The Mobile County Flood Damage Prevention Ordinance designates the Director of Building Inspections as the local administrator for floodplain administration.
• Environmental and Animal Enforcement: The Environmental Enforcement Department administers the Mobile County Junk Control Ordinance, and Mobile County Animal Control publishes animal-confinement ordinance language relevant to dogs kept on private premises.
PERMIT AND APPROVAL REQUIREMENTS
• Fence Permit Exemption: Mobile County Inspection Services states that almost any residential or commercial work in Mobile County requires a permit, but lists erecting a fence seven (7) feet or less in height as an exception. This is a permit-exemption threshold, not a county maximum fence height.
• Fence Work Outside the Published Exemption: A fence that does not fit the published seven (7)-feet-or-less permit exception falls outside the stated fence exemption. Permit routing for that type of fence is handled through Mobile County Inspection Services.
• Zoning Approval: Mobile County states that there is no zoning in the unincorporated areas of Mobile County. The county does not publish a zoning permit requirement for ordinary residential fences in unincorporated areas.
• Floodplain Development Permit: The Mobile County Flood Damage Prevention Ordinance requires a Development Permit before development activities begin in areas of special flood hazard. Where fence work involves construction, excavation, drilling, fill, grading, structures, or other development activity in a mapped flood hazard area, floodplain review may apply even if the fence is within the ordinary fence permit exemption.
• Right-of-Way Encroachment Permit: A Right of Way Encroachment Permit is required for work in Mobile County rights-of-way. Fence work must not be placed in a Mobile County right-of-way unless it is routed through the county right-of-way permit process.
• Subdivision and Plat Review: The Subdivision Regulations of Mobile County, Alabama apply when land is divided into two or more lots, plats, sites, or otherwise for subdivision purposes. Ordinary fence construction on an existing residential lot is separate from subdivision plat approval, but recorded plats, easements, drainage areas, building setback lines, flood zones, common areas, and private restrictions may affect where a fence can be located.
• Pool Barrier Context: Mobile County’s adopted codes include the 2018 International Swimming Pool and Spa Code, and Inspection Services publishes pool permit materials. Pool barriers and pool fencing are reviewed under the pool-code and pool-permit framework, not as ordinary residential yard-fence height or material rules.
• Animal-Control Context: Mobile County publishes animal-control ordinance language requiring dogs to be confined to the owner’s premises. That rule does not specify a fence height, fence type, or fence material.
FENCE PLACEMENT RULES
• Property-Line Placement: The ordinance does not state a setback requirement for standard residential fences from property lines; however, fences must be located entirely on the owner’s property and must not encroach into rights-of-way or easements.
• No County Zoning Setbacks: Because Mobile County states that unincorporated areas have no county zoning, the county does not publish front-yard, side-yard, or rear-yard zoning setbacks for standard residential fences.
• Subdivision Plat Conditions: The Subdivision Regulations require subdivision plats to show items such as rights-of-way, easements, drainage features, flood-zone information, and building setback lines. Those plat items may affect a residential lot, but the subdivision regulations do not state a separate fence setback for ordinary residential fences.
• Building Setback Lines: The Subdivision Regulations establish building setback lines for subdivision lots. Those are building setbacks and are not stated as fence setbacks.
• Rights-of-Way: Mobile County requires right-of-way permit routing for work in county rights-of-way. A residential fence must not be treated as permitted in a county right-of-way merely because ordinary fences seven (7) feet or less are listed as exempt from the building-permit process.
• Easements and Drainage Areas: Recorded plats and subdivision review materials may show drainage easements, utility easements, access areas, and common areas. The county’s subdivision and review materials do not convert those items into a standard residential fence setback, but a fence must not obstruct or occupy an easement or drainage area where the governing documents or county approval process restrict that location.
• Flood Hazard Areas: In mapped special flood hazard areas, the Flood Damage Prevention Ordinance may require a Development Permit before development activity begins. Floodway encroachments, including fill, new construction, substantial improvements, or other development, are prohibited unless the required engineering standard is met.
• Utility Safety: Alabama law requires notice through Alabama 811 before excavation where Alabama’s underground damage-prevention law applies. For fence projects that involve digging, including fence post holes, notice generally must be given within 2 to 10 full working days before excavation begins, not counting the day of notification.
FENCE HEIGHT AND VISIBILITY RULES
• Maximum Fence Height: The code does not specify a maximum height for standard residential fences.
• Permit-Exemption Height: Mobile County Inspection Services lists erecting a fence seven (7) feet or less in height as an exception from the county permit requirement. That statement functions as a permit-exemption threshold and does not establish a maximum permitted fence height.
• Front-Yard Height: The code does not specify a separate maximum height for front-yard residential fences.
• Side-Yard and Rear-Yard Height: The code does not specify separate maximum heights for side-yard or rear-yard residential fences.
• Corner Lots and Visibility: The code does not specify a residential fence visibility triangle or corner-lot fence height limit. The Subdivision Regulations require adequate sight distance at road intersections in the subdivision-layout context, but they do not state a separate visibility standard for ordinary residential fences.
• Floodplain and Coastal Areas: The Flood Damage Prevention Ordinance imposes separate floodplain-development standards where development occurs in flood hazard areas. Those floodplain standards do not create a general yard-fence height limit.
MATERIAL AND CONSTRUCTION LIMITS
• Standard Fence Materials: The code does not specify permitted or prohibited materials for standard residential yard fences.
• Finished Side / Orientation: The code does not specify a finished-side or outward-facing-side requirement for standard residential fences.
• Barbed Wire, Electric Fences, and Security Fences: The code does not specify standard residential rules for barbed wire, electric fences, battery-charged fences, or security fencing.
• Floodplain Materials: In special flood hazard areas, the Flood Damage Prevention Ordinance requires flood-resistant construction methods, flood-resistant materials, and limits on development that may obstruct flood flow where those rules apply. Those requirements are floodplain-development rules, not general residential fence material standards.
• Junk, Litter, and Rubbish: The Mobile County Junk Control Ordinance prohibits accumulation of junk, junked motor vehicles, litter, or rubbish for more than fourteen (14) days on covered property, subject to stated exceptions. The ordinance excludes building materials used in constructing or repairing a building or other structure when stored at the site of that building or structure.
• Animal Enclosure Materials: The animal-control ordinance language requires dogs to be confined to the owner’s premises but does not specify the material, height, or design of a fence used for confinement.
PRIVATE RESTRICTIONS
Private covenants, subdivision restrictions, deed restrictions, easements, and HOA rules operate independently from Mobile County’s public rules and may be more restrictive than county requirements.
The Subdivision Regulations state that private restrictions are not abrogated by the county regulations, but where county subdivision regulations impose more restrictive or higher standards than a private restriction, the county regulations govern within their scope. Mobile County also states that neither the County Commission nor the County Engineer is responsible for enforcing private agreements or restrictions.
REVIEW AND ENFORCEMENT CONTEXT
Fence issues are typically reviewed during permit or approval review when required, and through complaint-based code enforcement. Examples include:
• Permit-Exemption Review: Fence work may be reviewed by Mobile County Inspection Services when the proposed fence does not fit the published seven (7)-feet-or-less permit exemption.
• Right-of-Way Review: Fence work in a Mobile County right-of-way is routed through the county right-of-way permit process.
• Floodplain Review: Fence work that qualifies as development in a special flood hazard area may require review under the Mobile County Flood Damage Prevention Ordinance before work begins.
• Floodway Constraints: Encroachments in a regulatory floodway, including fill, new construction, substantial improvements, or other development, are prohibited unless the required engineering showing is made.
• Subdivision and Plat Context: Mobile County Engineering reviews subdivision plats, rights-of-way, easements, drainage facilities, flood-zone information, building setback lines, and related subdivision infrastructure where land is being divided or developed under the Subdivision Regulations.
• Animal-Confinement Context: Animal-control enforcement may apply where dogs are not confined to the owner’s premises as required by the posted animal-control ordinance language.
• Property-Maintenance Context: Environmental enforcement may apply where junk, litter, rubbish, or junked vehicles accumulate on covered property in violation of the Mobile County Junk Control Ordinance.
USING THIS INFORMATION
This page provides general orientation on how residential fence rules are structured and applied within Mobile County, based on publicly available source materials reviewed as of May 2026.
In addition to local fence rules, certain Alabama laws apply statewide. See Statewide Fence Laws in Alabama.
It is not legal advice and does not replace official ordinances, permits, surveys, or professional guidance. Rules and interpretations may change, and application may vary based on zoning district, site conditions, easements, rights-of-way, floodplain status, rural or agricultural context, and private restrictions such as HOA covenants. Before purchasing materials or beginning construction, confirm current requirements and any site-specific limitations with Mobile County Inspection Services, Mobile County Engineering, and the Mobile County Commission and any applicable private agreements. If this page conflicts with official ordinances, published guidance, or direction from Mobile County staff, the official sources control. For legal advice or legal interpretation, consult a licensed attorney.