FENCE RULES – HERNDON (TOWN), VIRGINIA

OVERVIEW

Residential fences are permitted on private property within Town of Herndon, subject to local regulations.

For properties located outside Town of Herndon town limits, Fairfax County regulates fences in unincorporated areas.

Town of Herndon regulates residential fences primarily through the Herndon Zoning Ordinance, including Section 78-115.2 for fencing, walls, and hedges, Section 78-21(e) for visibility clearance, and Section 78-155.5 for administrative adjustments. Site conditions may also bring in Chapter 26 Environment, Chapter 66 Streets, Sidewalks and Certain Other Public Places, the Historic District Overlay, the Floodplain Overlay, and the Chesapeake Bay Preservation Area Overlay.

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 the Town of Herndon Code of Ordinances, the Herndon Zoning Ordinance, Town of Herndon residential zoning materials, the Application for Administrative Adjustment Residential Fence or Wall, the Historic District Overlay Guidelines, the Historic District Property Modification Form, the RPA Permit Application, Chapter 26 environment provisions, Chapter 66 right-of-way provisions, and the Virginia Uniform Statewide Building Code baseline as of July 2026.

GOVERNANCE

The Town of Herndon Town Council adopts the Herndon Zoning Ordinance. The Department of Community Development and the zoning administrator administer zoning and development applications for fence standards, administrative adjustments, Historic District requests, and Resource Protection Area permit applications.

Town of Herndon does not use a single separate fence code. Fence rules appear in Article XI, Walls, Fencing and Hedge Standards, with related provisions for accessory features, visibility clearance, administrative adjustments, floodplain review, Chesapeake Bay Preservation Area review, erosion and sediment control, and public rights-of-way.

The Department of Public Works administers right-of-way and street-excavation permit issues. The Historic District Review Board and Town staff administer Historic District Overlay certificate of appropriateness review where applicable.

PERMIT AND APPROVAL REQUIREMENTS

• Building Permit: Under the Virginia Uniform Statewide Building Code baseline, application for a building permit and related inspections are not required for fences of any height, unless the fence is required for pedestrian safety during construction or is used as the barrier for a swimming pool. Town of Herndon does not publish a stricter local residential fence building-permit threshold in the referenced published materials.

• Administrative Adjustment for Fence or Wall Location: An administrative adjustment is the local approval path for a residential fence or wall over 4 feet in a secondary front setback on a corner or through lot when the standards of Section 78-115.2 allow that review. The application form is titled Application for Administrative Adjustment Residential Fence or Wall and requires a written description, owner signatures, fee, boundary survey, proposed fence or wall location, proposed height, architectural-front information, and photographs.

• Standard Zoning Approval: The referenced published materials do not state that a zoning inspection permit, zoning appropriateness permit, or all-fences zoning permit is required for a standard residential fence or wall that stays within Section 78-115.2 height and location standards and is not in a special review condition listed in this section.

• Historic District Overlay: For property in the Historic District Overlay, a certificate of appropriateness may be required for fencing or walls. The Historic District Overlay Guidelines state that a COA is required for fences, walls, and retaining walls that are over one foot in height when measured from original grade, while site features not visible from a public right-of-way are exempt from COA process and procedures except for dumpster enclosures.

• Resource Protection Area / Chesapeake Bay Preservation: For property that contains a Resource Protection Area, the Town publishes an RPA Permit Application for certain activities on property containing RPA. When activity, development, or disturbance of the RPA is requested, the application materials may require site-specific RPA delineation, a minor or major water quality impact assessment, an administrative waiver, or a CBPA exception depending on the site and amount of disturbance.

• Erosion and Sediment Control: Chapter 26 excludes the installation of fence and signposts from the definition of land disturbing activity, and it also excludes land disturbance under 2,500 square feet unless otherwise required by the zoning ordinance's Chesapeake Bay Preservation Area provisions. This narrow exclusion does not authorize drainage changes, Resource Protection Area disturbance, floodplain work, right-of-way work, or larger land-disturbing activity connected to a broader project.

• Floodplain Overlay: Work that qualifies as a use, activity, or development within a Floodplain Overlay district must be handled under the Town's floodplain provisions. The floodplain rules are site-condition rules and do not create an ordinary fence permit for fences outside the Floodplain Overlay.

• Right-of-Way or Street Work: Fence work must not encroach on public property, public streets, or public rights-of-way. Work that opens, disturbs, or occupies a Town street, alley, sidewalk, or right-of-way is handled through the Department of Public Works right-of-way and street-excavation permit framework.

• Pool Barrier: A fence used as a swimming pool barrier is treated differently from an ordinary yard fence under the Virginia building-code baseline. Pool-barrier use may require building-code review even when an ordinary non-pool fence is exempt from building-permit application.

FENCE PLACEMENT RULES

• Property Lines: The code permits fences or walls within a lot or on the property line between two or more parcels of land.

• Public Property and Rights-of-Way: No fence, wall, or hedge may be located so as to encroach on public property, including public streets and other public rights-of-way. Hedges must be planted at a distance from the right-of-way so the mature hedge does not encroach into the right-of-way.

• Drainage: Unless approved on a site plan, subdivision plan, or single lot development plan, no fence or wall may be installed so as to create, change, block, or divert drainage flow on to or off of any other property.

• Vegetation: Fences and walls must be installed so as to minimize disturbance or damage to existing vegetation or installed plant material.

• Corner and Through Lots: On corner and through lots, fences or walls up to and including 7 feet in a secondary front setback require approval of an administrative adjustment and must satisfy the applicable architectural-front, pavement-edge, sidewalk-edge, and visibility standards.

• Residential Development Perimeter Fences: Perimeter fences or walls located in common areas of single-family detached, single-family attached, or multi-family development and within 20 feet of the edge of a public-street right-of-way are subject to separate residential-development perimeter standards, including landscaping, wall-plane, maximum-height, and distance-from-right-of-way rules.

• Historic District and RPA Sites: Fence placement on property in the Historic District Overlay, Chesapeake Bay Preservation Area Overlay, or Resource Protection Area must also account for the Town's certificate of appropriateness, RPA permit, site-specific delineation, and water-quality review rules where those site conditions apply.

• Utility Safety: Virginia law requires notice to the notification center / Virginia 811 before excavation or demolition where the Underground Utility Damage Prevention Act applies. For fence projects that involve excavation, including digging, drilling, augering, or other movement of earth, the excavator must submit a locate request and must review the positive-response information before work begins unless an exemption applies. A Virginia locate request is generally valid for 15 working days, and re-marking may be required before that period ends or when markings become illegible. Virginia law includes an important exemption for hand digging performed by an owner or occupant of a property. This statewide utility-notice framework is separate from local fence permitting, zoning, development approval, easement limits, right-of-way approvals, floodplain review, Chesapeake Bay Preservation Area review, Resource Protection Area review, stormwater review, wetland or shoreline approvals, HOA restrictions, and other applicable requirements.

FENCE HEIGHT AND VISIBILITY RULES

• 4 Feet in Any Required Yard or Setback: In residential districts, fences and walls up to and including 4 feet in height may be located within any required setback or yard, subject to the visibility-clearance rules.

• 7 Feet in Required Rear or Side Yards: In residential districts, fences and walls up to and including 7 feet in height may be located within a required rear yard or required side yard. Fences or walls over 4 feet may not extend forward of the architectural front of the principal structure or be located between any portion of the architectural front of the principal structure and the required front setback, except under the perimeter-fence standards for residential development.

• Secondary Front Setbacks: On corner and through lots, fences and walls up to and including 7 feet may be located in secondary front setbacks only with administrative-adjustment approval. A fence or wall over 4 feet in that location may not extend forward of the architectural front of the principal structure, may not be closer than 11.5 feet from the edge of pavement or gravel along public rights-of-way without sidewalks or trails, and may not be closer than 3 feet from the edge of the sidewalk or trail closest to the principal structure along public rights-of-way.

• Angled Corner Lots: On lots where the principal structure is angled so that the architectural front facade faces the intersection of two streets, a fence or wall over 4 feet may not encroach into the front yard or setback running parallel to the intersecting streets and may not extend closer to the adjacent right-of-way than the distance from the right-of-way to the corner of the front facade closest to the fence.

• Height Measurement: Fence and wall height is measured from natural grade. If a fence is constructed on top of a wall, or if a fence or wall is constructed on fill over natural grade, the combined height may not exceed the maximum height that would apply to the fence or wall alone. Fence and wall height measurements allow an average deviation of up to 5 percent of the allowable maximum height, measured every 4 feet, with no measurement more than 5 inches above the maximum allowable height. Fence and wall posts may not exceed the maximum allowed fence height by more than 6 inches, inclusive of finials or other decorative elements.

• Visibility Clearance: Fences, walls, trees, shrubs, or other visual barriers over 3 feet in height above grade must be placed to maintain pedestrian view on sidewalks and traffic vision at intersections. For intersecting streets, the public works director determines the visibility clearance requirement based on accepted engineering standards for adequate sight distance.

• Driveways, Alleys, and Garage Entrances: No visual obstruction over 3 feet in height above grade is allowed within the 25-foot sight-distance triangle created at the intersection of an alley and street. No visual obstruction over 3 feet in height above grade is allowed within the 6-foot sight-distance triangle created at the intersection of a garage entrance and alley.

• Residential Development Perimeter Height: Perimeter fences or walls in residential development common areas may not exceed 6 feet in height measured from natural grade and remain subject to visibility clearance. Perimeter fences and walls up to and including 4 feet must be at least 3 feet from the edge of right-of-way; perimeter fences and walls over 4 feet must be at least 6 feet from the edge of right-of-way.

• Height Exemptions: Customary fencing for a permitted tennis court, ball field, or other recreational facility is exempt from the height restrictions of Section 78-115.2, except for visibility clearance. Roadway sound attenuation walls and fences installed by the Town, County, or State for roadway noise protection are also exempt from the height restrictions of that section.

MATERIAL AND CONSTRUCTION LIMITS

• Customary Materials: Fences and walls must be constructed of customary fencing or wall materials, including solid wood, masonry, stone, brick, wrought iron, decorative metal materials, or products designed to resemble those materials.

• Prohibited Materials: Barbed wire fences and above-ground electrified fences are prohibited in all zoning districts. Fences or walls made of debris, junk, rolled plastic, sheet metal, plywood, or waste materials are prohibited unless those materials have been recycled and reprocessed into building materials marketed to the general public and resemble customary fencing materials.

• Chain Link: Chain-link fencing is not a standard residential yard-fence material under the Town's zoning standards. The code limits chain-link fencing to listed recreational facilities not located on a lot with a single-family detached or single-family attached dwelling, schools not associated with a home-based child-care business, and temporary construction or staging areas that satisfy the zoning administrator letter and time-limit requirements.

• Underground Electric Fences: Underground electric fences designed for control of domestic animals are permitted.

• Finished Side: If one side of a fence or wall appears more finished than the other, the more finished side must face the perimeter of the lot rather than the interior of the lot.

• Maintenance: Fences and walls must be maintained in good repair. Deteriorated, damaged, or decayed materials must be promptly repaired, and any post or section that leans more than 20 degrees from vertical must be promptly repaired to correct that condition.

• Historic District Materials: In the Historic District Overlay, fences 12 inches and higher, inclusive of raised grade, should be of wood or wrought iron. Plastic and vinyl fences are not appropriate under the Historic District Overlay Guidelines. Alternative materials that replicate painted wood or metal may be appropriate, and fence or wall materials may be further restricted in the Historic District Overlay.

• Temporary Construction Fences: Temporary fences for construction sites, tree protection, or a similar purpose must comply with the zoning ordinance, the Herndon Public Facilities Manual, the approved site plan, and the building code adopted by the Town where those requirements apply.

PRIVATE RESTRICTIONS

Private restrictions operate independently from Town of Herndon fence rules. HOAs, condominium documents, subdivision covenants, deed restrictions, private easements, architectural-review covenants, conservation easements, boundary agreements, and other recorded private agreements may be more restrictive than the Town's published standards.

Town approval of a fence, wall, administrative adjustment, Historic District request, RPA permit, right-of-way permit, or related site approval does not remove the need to comply with applicable private 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:

• Height and Location: Fences or walls over the allowed height for the applicable yard, setback, or residential-development perimeter location.

• Administrative Adjustment: Fences or walls over 4 feet in a secondary front setback on a corner or through lot without the required administrative-adjustment approval.

• Visibility: Visual obstructions over 3 feet in required sight-distance areas, including the 25-foot alley-street triangle and 6-foot garage-alley triangle.

• Public Property and Drainage: Fences, walls, or hedges encroaching into public property or public rights-of-way, or fences and walls that create, change, block, or divert drainage flow onto or off another property without applicable approval.

• Historic District: Fences, walls, retaining walls, or site features in the Historic District Overlay that require certificate of appropriateness or staff review before installation.

• RPA, CBPA, and Floodplain Conditions: Fence-related site work involving Resource Protection Area activity or disturbance, Chesapeake Bay Preservation Area requirements, or Floodplain Overlay use, activity, or development review.

• Materials and Maintenance: Prohibited fence materials, above-ground electrified fencing, barbed wire, standard residential chain-link installation, unfinished-side orientation issues, deteriorated materials, and posts or sections leaning more than 20 degrees from vertical.

• Utility Safety: Fence projects involving excavation where Virginia 811 notice and positive-response review are required before work begins.

USING THIS INFORMATION

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

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

It is not legal advice and does not replace official ordinances, permits, zoning approvals, zoning certifications, development approvals, 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 requirements, Chesapeake Bay Preservation Area status, Resource Protection Area status, wetland or shoreline status, historic district status, design-review status, rural or agricultural context, livestock or division-fence context, pool-barrier use, utility safety requirements, 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 Town of Herndon Department of Community Development and any applicable private agreements. If this page conflicts with official ordinances, published guidance, or direction from Town of Herndon staff, the official sources control. For legal advice or legal interpretation, consult a licensed attorney.