How Gaithersburg Handles Fence Regulations: A Practical Guide
Gaithersburg maintains 95 local ordinances across all categories, and 3 of those deal specifically with fence regulations. Here is a breakdown of what the city actually requires, what is prohibited, and where Gaithersburg falls on the strict-to-permissive spectrum compared to other cities.
Height Limits
Gaithersburg limits fences and screen walls to 3 feet in any front yard or along a public or private road, 6 feet in side and rear yards, and just 3 feet within 25 feet of a corner-lot intersection, with a building permit required before any fence or wall goes up.
Key details: Front yard / street frontage: 3 feet maximum. Side and rear yard: 6 feet maximum. Corner lot sight triangle: 3 ft for 25 ft from intersection. Corner waiver: Not permitted, no exceptions. Permit required: Building permit under § 24-12.13.
Building a fence without a permit or above the height limits is a zoning violation enforced under Article 15 of Chapter 24, punishable as a municipal infraction with fines set under section 1-7 of the City Code; the city manager or designee can order a noncompliant fence removed or lowered, and each day it remains counts as a separate offense.
Retaining Walls
Gaithersburg only exempts a retaining wall from a building permit if it is 3 feet or less, measured from the lowest adjacent grade to the top of the wall; anything taller needs a permit under the city's amended residential code, and walls in a corner-lot sight triangle are allowed only where street grade changes make them necessary.
Key details: Permit-exempt height: 3 ft or less from lowest adjacent grade. Permit required above: Over 3 feet in height. Corner-lot exception: Allowed where street grade requires it. Floodplain retaining walls: Require diversion/erosion analysis. Enforcing office: Permits and Inspection Services.
Building a retaining wall over 3 feet without a permit is enforced as a building code violation under the city's IRC amendments, subject to a stop-work order and municipal infraction fines under section 1-7 of the City Code, with continued unpermitted construction treated as a separate daily offense; unpermitted work in a mapped floodplain can also trigger a Chapter 10 floodplain enforcement action.
If you are coming from a city with tighter rules, you will find Gaithersburg gives residents more flexibility on retaining walls.
Fence Permit Requirements
A Residential Fence Permit is required in Gaithersburg for all new fences and any additions or alterations to existing fences. Applications are submitted through the city permitting office and must comply with Chapter 24 zoning standards for height, location, and materials.
Key details: Permit Required: All new fences and alterations. Office: Permitting and Inspections. Zoning Contact: 301-258-6330. Site Plan: Required with application.
Fence installed without permit: stop work order and code enforcement citation. Non-compliant fence: correction notice requiring modification or removal.
The Bottom Line
Gaithersburg's fence 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 Gaithersburg is broadly strict or permissive.
All of the above reflects Gaithersburg's municipal code as of our last review. If you need specifics on fines, exemptions, or filing requirements, the detailed ordinance pages linked above have the full breakdown.