FENCE RULES – MARATHON (CITY), FLORIDA

OVERVIEW

Residential fences are permitted on private property within City of Marathon, subject to local regulations. For properties located outside City of Marathon municipal limits, Monroe County regulates fences in unincorporated areas.

The principal local standards appear in the City of Marathon Code of Ordinances, especially Chapter 6, Buildings and Building Regulations; Appendix A, Land Development Regulations, Article 107-10, Fences, Walls, Hedges and Screening; Chapter 18, section 18-28, Fence Maintenance; and the City’s Requirements to Obtain a Fence Permit. Related natural-resource and floodplain requirements appear in Chapters 106 and 107 of the Land Development Regulations.

This page focuses on typical single-family residential fencing. If the jurisdiction’s adopted code or ordinance materials do not state a specific limit or requirement, this page notes that the code does not specify one. If no local code or ordinance is available in the approved source packet, this page notes that the jurisdiction does not publish the relevant standard in the referenced published materials.

Compiled From the City of Marathon Code of Ordinances, Chapter 6, Buildings and Building Regulations, Chapter 18, Offenses and Miscellaneous Provisions, Appendix A, Land Development Regulations, Requirements to Obtain a Fence Permit, Application for Building Permit, City of Marathon Building Department, Planning Department, Flood Safety, and Code Compliance materials, 8th Edition (2023) Florida Building Code, Chapter 2026-63, and sections 556.105 and 720.3035, Florida Statutes, as of July 2026.

GOVERNANCE

The governing authority is the City of Marathon.

The Planning Director administers and interprets the Land Development Regulations through the Planning Department. The Building Department administers fence-permit intake, plan review, permit issuance, and inspections. The Code Compliance Division enforces the City’s land-use and development requirements.

Section 6-52 expressly lists fences as work requiring a building or site-preparation permit. Article 107-10 supplies the principal height, location, visibility, material, and alternative-compliance standards.

The City applies the 8th Edition (2023) Florida Building Code. Chapter 6 adopts the Florida Building Code and its replacement editions and includes local administrative and floodplain-related amendments. The City also states that the City of Marathon is entirely within the Special Flood Hazard Area.

PERMIT AND APPROVAL REQUIREMENTS

Effective July 1, 2026, Florida’s HB 803, enacted as Chapter 2026-63, changed the building-permit framework for certain work on single-family residential property. A local government that issues building permits must exempt an owner of a single-family dwelling, or the owner’s contractor, from the requirement to obtain a building permit for work valued at less than $7,500 on the owner’s property. The exemption does not apply to work on property located partly or entirely in a flood hazard area as defined by the Florida Building Code, or to electrical, plumbing, structural, mechanical, or gas work performed on property containing a single-family dwelling. A construction project may not be divided into multiple projects to evade this rule. To qualify, the owner or the owner’s contractor must submit a written exemption request to the local enforcement agency with a contract or other documentation showing the nature and value of the work.

This statutory exemption concerns only the requirement to obtain a building permit. It does not eliminate separate requirements involving zoning, fence permits, setbacks, surveys, easements, rights-of-way, drainage, visibility, floodplain review, historic or design review, Certificates of Appropriateness, pool barriers, HOA approval, covenants, or other site-specific restrictions that may apply to the property.

The statute does not classify every fence project as structural or nonstructural. Unless the local permitting authority has published specific guidance for fence work under HB 803, whether a particular fence project qualifies for the valuation exemption depends on the nature of the work, the property location, and the applicable local permitting process.

• Building Permit: Section 6-52 requires a building or site-preparation permit for fences. The City’s fence packet likewise identifies a fence permit as required for installation.

• Application Packet: The fence packet requires a completed Building Permit Application, a property survey, a site plan showing lot dimensions, existing structures, access drives, and the proposed fence location, type, and height, and a sectional drawing showing the fence foundation and reinforcement. The application must identify the proposed linear footage, estimated cost, and contractor information when applicable; owner approval is required when a lessee proposes the work.

• Land Development Review: Permit review applies Article 107-10 and related natural-resource and floodplain provisions. The Planning Department administers the Land Development Regulations, and the Building Department administers the building-permit process.

• Flood-Hazard Documentation: The City states that it is entirely within the Special Flood Hazard Area. When a fence in a V zone is constructed of solid masonry or is treated as a retaining wall, the fence packet requires a statement from an architect or engineer that the fence uses breakaway construction or will not cause a water-ramping effect detrimental to the principal structure.

• Natural-Resource Review: Section 106.05 exempts limited fence-related vegetation removal from the natural-resource-assessment submittal only when the fence is authorized by a City development permit, the clearing path is 3 feet or less wide, no excavation or fill is required beyond installation of posts and fence materials, equipment is limited to a one-ton pickup truck, handheld outdoor power equipment, or a standard farm-type tractor, and navigational access is not impaired.

• Alternative Compliance: Article 107-10 allows an applicant to submit a fencing or screening plan that varies from strict requirements to accommodate unique site features, preserve water views, or use innovative design. Approval requires a finding that the alternative fulfills the article’s purpose and intent as well as or more effectively than strict compliance.

• Pool-Barrier Review: The City publishes a pool-fence inspection form. A fence used as a private residential swimming-pool barrier remains subject to current Florida Building Code requirements and City final inspection.

FENCE PLACEMENT RULES

• Property Lines and Survey: 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. The fence permit packet requires a survey and site plan showing the proposed fence location.

• Street-Side Yards on Corner Lots: When a corner lot’s rear property line abuts an adjacent lot’s side property line, a 6-foot fence within the street-side yard must follow one of three placements: at least 10 feet from the side property line for the portion within the rear-yard setback when the rear line lies within 15 feet of the neighboring driveway; at least 10 feet from the adjacent curb face when it does not; or at least 10 feet from the adjacent curb face when two corner-lot rear property lines abut.

• Fire Hydrants and Utilities: No fence, wall, hedge, or other structure may be installed or maintained within 36 inches of a fire hydrant or closer than 12 inches to a utility or utility cabinet.

• Wetlands and Waterfront: The City’s fence permit packet states that a fence may not extend into, through, or beyond a wetland, water body, or the mean high-water line.

• Conservation Management Areas: Fence construction within a conservation management area may be permitted only as part of an approved management plan, without fill activity, and with wildlife movement corridors maintained. Limited vegetation clearing for an authorized fence must satisfy the conditions in section 106.05.

• Utility Safety: Florida law requires notice through the statewide notification system commonly operated as Sunshine 811 before excavation or demolition. For fence projects that involve digging, drilling, augering, boring, grading, or other movement of earth on land, notice must be provided not less than 2 full business days before excavation begins. Member operators mark or otherwise respond regarding covered underground facilities, and the excavator must verify the system’s positive responses before beginning excavation where required. This statewide utility-notice framework is separate from local fence permitting, zoning, development approval, easement limits, right-of-way approvals, floodplain review, stormwater review, drainage review, historic or design review, HOA restrictions, and other applicable requirements.

FENCE HEIGHT AND VISIBILITY RULES

• Developed Single-Family Residential Lots: A fence, wall, or hedge is limited to 48 inches within 15 feet of the street-frontage property line on parcels larger than 4,500 square feet. On parcels of 4,500 square feet or less, the 48-inch area extends 10 feet from the street-frontage property line. Beyond that area, the maximum height is 6 feet.

• Height Measurement: Maximum fence height is measured from the crown of the road or the unimproved grade of the property, whichever is lower.

• Corner Visibility: No fence, wall, hedge, or other visual obstruction over 24 inches may be constructed where traffic visibility would be impeded within the triangle formed by the intersecting curb lines and a line connecting points 30 feet from their intersection.

• Undeveloped Parcels: A fence up to 6 feet may be installed on an undeveloped parcel, subject to the natural-resource limitations in sections 106.05 and 106.53.

• Entry Gates and Columns: Entry gates and entry columns may rise up to 18 inches above the adjacent fence panels. Lighting fixtures may be placed above the entry-column height limitation.

MATERIAL AND CONSTRUCTION LIMITS

• Razor and Barbed Wire: Razor wire, barbed wire, and similar fences or walls are prohibited on or adjacent to residentially zoned property.

• Residential Materials: The Land Development Regulations do not specify a general chain-link, vinyl, wood, masonry, opacity, finished-side, or decorative-material requirement for ordinary single-family residential fences.

• Coastal High Hazard Areas – Zone V: Solid fences, privacy walls, and fences prone to trapping debris are regulated as other development in Zone V unless designed to fail before design-flood conditions or otherwise avoid obstructing floodwaters. Where regulated, the work must be authorized by the appropriate authority, located outside building footprints, not structurally attached, and supported by qualified-design-professional analysis showing no harmful diversion of floodwaters or wave effects.

• Fence Maintenance: Fences may not have non-manufactured holes or gaps or damaged or missing pieces; gates must be aligned and functional with hinges and lockable hardware; vertical and horizontal supports must be level and plumb; fences may not lean or separate from their supports; and fences must be kept free of grass, weeds, invasive vines, and other vegetation.

PRIVATE RESTRICTIONS

Private covenants, HOA rules, subdivision restrictions, deed restrictions, private easements, architectural-review covenants, recorded agreements, and other private restrictions operate independently of City of Marathon regulations and may be more restrictive.

Effective July 1, 2026, section 720.3035(1)(c), Florida Statutes, as added by Chapter 2026-63, provides that an association or similar committee may not require issuance of a governmental building permit as a prerequisite to its review of structures or improvements. This provision does not eliminate HOA or architectural review.

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 and Plan Review: Review addresses the required survey, site plan, sectional drawing, fence type, height, linear footage, project cost, contractor or owner authorization, and any required V-zone documentation.

• Residential Height and Street Frontage: Review may address the 48-inch limit within the applicable 15-foot or 10-foot street-frontage area and the 6-foot limit beyond that area.

• Corner Lots and Visibility: Review may address the 24-inch visibility limit within the 30-foot corner triangle and the street-side-yard placement rules for 6-foot fences.

• Natural Resources and Waterfront: Review may address limited vegetation clearing, conservation management areas, wetlands, water bodies, the mean high-water line, wildlife movement, and navigational access.

• Flood-Hazard Conditions: The Planning Department and Building Department may review flood-hazard conditions, including solid-masonry or retaining-wall treatment in a V zone and the separate Zone V standards for solid or debris-trapping fences.

• Materials and Maintenance: Code review and complaint-based enforcement may address razor or barbed wire on residentially zoned property, damaged fence components, nonfunctional gates, leaning supports, and vegetation on fencing.

• Utility Excavation: Fence-post excavation remains subject to the statewide Sunshine 811 notice and positive-response process.

USING THIS INFORMATION

This page provides general orientation on how residential fence rules are structured and applied within City of Marathon, based on the referenced published materials as of July 2026.

In addition to local fence rules, certain Florida laws apply statewide. See Statewide fence laws in Florida.

It is not legal advice and does not replace official ordinances, permits, zoning approvals, zoning certifications, development approvals, Florida Building Code requirements, HB 803 exemption procedures, surveys, or professional guidance. Rules and interpretations may change, and application may vary based on zoning district, site conditions, easements, rights-of-way, flood-hazard status, coastal conditions, stormwater requirements, drainage conditions, historic district status, design-review status, rural or agricultural context, pool-barrier use, Florida Building Code edition, local amendment status, Sunshine 811 utility-safety requirements, overhead utility-line safety, and private restrictions such as HOA covenants, deed restrictions, private agreements, or conservation easements. Before purchasing materials or beginning construction, confirm current requirements and any site-specific limitations with the City of Marathon Building Department and Planning Department and any applicable private agreements. If this page conflicts with official ordinances, published guidance, or direction from City of Marathon staff, the official sources control. For legal advice or legal interpretation, consult a licensed attorney.