Do you need a permit for a fence in Montgomery County, MD?
It depends on size and placement.
Every new fence needs a permit, unless it replaces a permitted fence of the same kind, height and spot.
The height cap is 6 ft 6 in.
On corner lots, nothing over 3 ft within 15 ft of the intersection.
Rules last checked by a person on October 20, 2026. Guidance only; confirm with Montgomery County before you build.
Check your exact lot
Setbacks depend on your zoning district, and a flood zone can change the permit answer. Enter your address to see both.
Permits a fence can need in Montgomery County
| Permit | When it applies |
|---|---|
| Fence permit | Montgomery County requires a permit for any new fence. |
| Floodplain development permit | If the lot is in a FEMA special flood hazard area, all development there needs a permit. |
Limits that apply citywide
| Maximum height | 6 ft 6 in |
|---|---|
| Corner lot | 3 ft max within 15 ft of the intersection |
| Easements | Not allowed in drainage or utility easements without the easement holder's approval |
Local details
- Call 811 at least a few days before you dig footings or post holes. Utility locating is free.
- HOA covenants and deed restrictions can be stricter than city rules. Check yours before you build.
How to apply
- DPS eServices
- Department of Permitting Services
- MCAtlas zoning map
- Phone: 311 (240-777-0311)
Questions people ask
- When does a fence need a building permit in Montgomery County?
- Montgomery County requires a permit for any new fence. Replacing a permitted fence with the same kind, in the same spot and at the same height, doesn't need a new permit.
- Where do I apply for a fence permit in Montgomery County?
- Apply through DPS eServices, or call 311 (240-777-0311).
Sources
- Montgomery County DPS, Residential Fence Permit Process. Checked 2026-10-19.
A permit is required to install any type of fence in Montgomery County... The maximum permitted height of a fence or wall is 6' 6".
- 44 CFR 59.1, definition of development (NFIP). Checked 2026-10-19.
Development means any man-made change to improved or unimproved real estate, including but not limited to buildings or other structures...
- 44 CFR 60.3, floodplain management criteria. Checked 2026-10-19.
Require permits for all proposed construction or other development in the community...