FENCE RULES – JOHNSON (COUNTY), KENTUCKY
OVERVIEW
Residential fences are permitted on private property within Johnson County, subject to local regulations. This page applies to properties in the unincorporated areas of Johnson County; incorporated municipalities may regulate fences under their own ordinances.
Johnson County does not publish a consolidated residential fence code, county zoning ordinance, local fence permit form, or ordinary residential fence height schedule in the county materials used for this page. Fence-related rules appear mainly through the Johnson County Floodplain Management program, the Johnson County Flood Damage Prevention Ordinance, the county road/right-of-way context, Kentucky residential building-code permit exemptions, Kentucky stream-construction approval, and Kentucky utility-notice law.
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 Johnson County official website materials, Johnson County Fiscal Court materials, Johnson County Floodplain Management, Johnson County Flood Damage Prevention Ordinance, Johnson County Road Department materials, Kentucky Department of Housing, Buildings and Construction Johnson County inspector listing, 815 KAR 7:125, the 2018 Kentucky Residential Code, KY Stream Construction Application / DOW Form 7116, Kentucky Energy and Environment Cabinet water-quality certification materials, and Kentucky 811 / KRS 367.4911 and KRS 367.4915 as of June 2026.
GOVERNANCE
Johnson County Fiscal Court is the county governing authority for unincorporated county matters. The county does not publish a separate local zoning office, residential fence ordinance, or fence permit workflow for ordinary residential fences in the official county materials reviewed for this page.
Floodplain administration is the main local development-review layer that can affect fence work. The Johnson County Flood Damage Prevention Ordinance appoints the County Judge Executive or designee as the Floodplain Administrator to administer, implement, and enforce floodplain development permits.
The Johnson County Road Department administers county road-maintenance functions, including right-of-way mowing, signage, culverts, roadside debris, and related road work. The county road materials do not publish a fence-specific setback or county road encroachment permit for standard residential fences.
Kentucky’s statewide residential building-code framework supplies the building-permit baseline for single-family residential work. That state building-code baseline is separate from county floodplain permits, state stream permits, rights-of-way, easements, private restrictions, and pool-barrier requirements.
PERMIT AND APPROVAL REQUIREMENTS
• Building Permit Baseline: Under the Kentucky Residential Code building-permit baseline, fences not over 7 feet high are exempt from a building permit. Johnson County does not publish a stricter local residential fence permit threshold or an all-fences permit rule in the official source materials reviewed for this page. Fences over 7 feet fall outside that specific building-permit exemption, but Johnson County does not publish a separate taller-fence permit workflow in the official source materials reviewed for this page.
• Floodplain Permit: Johnson County requires both a state and local floodplain permit for construction activity in the Special Flood Hazard Area, including new or substantially improved structures, bridges, excavation, and fill. The county floodplain ordinance also requires a local development permit before development begins in a Special Flood Hazard Area.
• Fence Work in Floodplain Areas: The floodplain ordinance defines obstruction to include a fence, and it defines development broadly to include manmade changes to improved or unimproved real estate, including structures, dredging, filling, grading, paving, excavating, drilling operations, and storage of equipment or materials. Fence work in a mapped floodplain may therefore require floodplain review when it functions as development, excavation, fill, or an obstruction under the ordinance.
• Floodway and Stream Review: In floodways, encroachments, fill, new construction, substantial improvements, and other development are prohibited unless technical certification supports that the work will not increase base flood elevations. In special flood hazard areas where streams exist but base flood data or floodways are not established, encroachments including fill material or structures require certification that the cumulative effect of the proposed development will not increase the water-surface elevation of the base flood more than 1 foot at any point in the community.
• Stream Construction / Water Quality Approval: Kentucky Division of Water approval is required before construction or other activity in or along a stream that could obstruct flood flows or adversely affect water quality. Work in a stream, including bank stabilization, dredging, or relocation, may also require 401 Water Quality Certification. A project disturbing more than 1 acre of soil may require stormwater-discharge notice coverage.
• Pool Barrier Context: A fence used as part of a regulated residential swimming pool, spa, or hot-tub barrier is reviewed under the Kentucky Residential Code pool-barrier rules. Those rules are separate from ordinary yard-fence rules.
FENCE PLACEMENT RULES
• Property Lines: 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.
• County Road Context: Johnson County does not publish a fence-specific setback from county roads. The county Road Department materials identify county road and right-of-way maintenance functions, but they do not establish a standard residential fence encroachment permit or road-yard fence placement table.
• Floodplain Placement: Within a Special Flood Hazard Area, fence placement may be reviewed as floodplain development or as an obstruction if the fence affects flood flow, fill, excavation, watercourse capacity, or mapped floodway conditions.
• Streams and Watercourses: Fence work in or along a stream must be evaluated under Kentucky Division of Water approval requirements when the work could obstruct flood flows or adversely affect water quality. Stream work may require local floodplain coordination and state approval before construction begins.
• Easements and Recorded Restrictions: The floodplain ordinance states that it does not repeal or impair existing easements, covenants, or deed restrictions, and that the more stringent restriction controls where another ordinance, easement, covenant, or deed restriction conflicts or overlaps.
• Utility Safety: Kentucky law requires notice through Kentucky 811 before excavation where Kentucky’s underground utility damage-prevention law applies. For fence projects that involve digging, including fence post holes, notice must be given not less than two full working days and not more than 10 full working days before excavation begins, unless a different future start date is allowed by law. Kentucky locate requests are valid for 21 calendar days from the initial request. Kentucky law also includes exemptions, including certain agricultural tilling and certain nonmechanized excavation on private property where no operator right-of-way or easement is encroached.
FENCE HEIGHT AND VISIBILITY RULES
• Standard Residential Fence Height: The code does not specify a maximum height for standard residential fences outside floodplain, pool-barrier, or other special review contexts.
• Kentucky Residential Code Threshold: The 7-foot figure in the Kentucky Residential Code is a building-permit exemption threshold for fences not over 7 feet high. It is not a Johnson County maximum fence height and does not create a separate local taller-fence permit workflow by itself.
• Floodplain Height / Flow Context: The floodplain rules do not establish an ordinary residential fence height limit. They regulate development, encroachments, obstructions, floodway impacts, and flood-carrying capacity in mapped flood hazard areas.
• Visibility and Sight Distance: The code does not specify a residential fence sight-triangle, driveway-visibility, alley-visibility, or corner-lot clear-vision height standard.
• Pool Barrier Height: A fence used as an outdoor in-ground swimming pool barrier must meet the Kentucky Residential Code pool-barrier standard, including a barrier height of at least 48 inches above grade measured on the side facing away from the swimming pool. This is a pool-barrier requirement, not a general maximum height for ordinary yard fences.
MATERIAL AND CONSTRUCTION LIMITS
• Standard Residential Fence Materials: The code does not specify permitted or prohibited materials for ordinary residential fences outside floodplain, pool-barrier, easement, right-of-way, or private-restriction contexts.
• Barbed Wire, Electric Fence, and Security Fence Materials: Johnson County does not publish a standard residential rule for barbed wire, electric fencing, razor wire, chain-link fencing, or security fencing in the official county materials reviewed for this page.
• Floodplain Obstructions: In floodplain areas, the ordinance defines obstruction to include a fence and regulates development that may impede or alter floodplain flow capacity. Floodway and stream-related limits focus on flood elevation, encroachment, and watercourse capacity rather than ordinary fence materials.
• Pool Barrier Construction: A fence used as an outdoor in-ground swimming pool barrier must follow Kentucky Residential Code barrier design rules. Those rules include limits on openings, solid-barrier protrusions, horizontal and vertical members, chain-link mesh size, lattice openings, gate operation, self-closing and self-latching devices, locking-device accommodation, and objects that could be used to climb the barrier.
• Retaining Walls: The Kentucky Residential Code separately exempts certain retaining walls not over 4 feet high from building permits, subject to the code’s conditions. That retaining-wall rule is separate from ordinary residential fence rules and does not establish a fence height limit.
PRIVATE RESTRICTIONS
Private restrictions operate independently from Johnson County public requirements. These may include HOA covenants, subdivision restrictions, deed restrictions, private easements, architectural-review covenants, private boundary agreements, agricultural agreements, recorded division-fence agreements, or agricultural conservation easements.
The Johnson County Flood Damage Prevention Ordinance states that existing easements, covenants, deed restrictions, or more stringent overlapping restrictions are not repealed or impaired by the floodplain ordinance. Where a private restriction is more restrictive than the public baseline, the more restrictive private restriction may control the owner’s project even when the county does not publish a specific ordinary fence height or material rule.
For rural, agricultural, livestock, farm-boundary, or shared-boundary fences, statewide Kentucky fence laws and private agreements may operate separately from Johnson County’s local floodplain and building-permit framework.
REVIEW AND ENFORCEMENT CONTEXT
Fence issues are typically reviewed during permit or approval review when required, and through complaint-based code enforcement. Examples include:
• Floodplain Development: Fence work in a Special Flood Hazard Area may be reviewed when it qualifies as development, excavation, fill, or an obstruction under the floodplain ordinance.
• Floodway Encroachments: Work in a floodway is reviewed under the ordinance’s no-rise standard for encroachments, fill, new construction, substantial improvements, and other development.
• Stream Work: Construction or activity in or along a stream may require Kentucky Division of Water approval and, where applicable, water-quality certification before work begins.
• Building-Permit Exemption Context: Fences not over 7 feet high are exempt from a building permit under the Kentucky Residential Code baseline, but that exemption does not remove floodplain, stream, right-of-way, easement, pool-barrier, or private-restriction requirements.
• Pool Barriers: A fence used as a residential pool barrier is reviewed under the Kentucky Residential Code pool-barrier standards rather than as an ordinary yard fence only.
• Rights-of-Way and Easements: Fence placement may be reviewed if a fence encroaches into a public right-of-way, utility easement, drainage easement, road area, or recorded private easement.
• Utility Conflicts: Fence-post excavation is subject to Kentucky 811 notice requirements where the underground utility damage-prevention law applies.
USING THIS INFORMATION
This page provides general orientation on how residential fence rules are structured and applied within Johnson County, based on publicly available source materials reviewed as of June 2026.
In addition to local fence rules, certain Kentucky laws apply statewide. See Statewide Fence Laws in Kentucky.
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, stormwater or drainage requirements, road or highway encroachment, historic district status, rural or agricultural context, livestock or farm-boundary context, pool-barrier use, and private restrictions such as HOA covenants, deed restrictions, private agreements, or agricultural conservation easements. Before purchasing materials or beginning construction, confirm current requirements and any site-specific limitations with Johnson County Fiscal Court and the Johnson County Floodplain Administrator where floodplain or stream work is involved, and any applicable private agreements. If this page conflicts with official ordinances, published guidance, or direction from Johnson County staff, the official sources control. For legal advice or legal interpretation, consult a licensed attorney.