Per Montgomery County:
Summer is a prime season for homeowners to add or rebuild fences on their properties. The best way to make sure fences are safe—and built according to Montgomery County regulations—is to follow guidance offered by the County’s Department of Permitting Services (DPS).
DPS issues hundreds of permits for fences each year. Generally, a permit is required to install any type of fence in Montgomery County.
To replace an existing fence with the same kind of fence in the same location and at the same height, a fence permit is not required if the original fence was permitted. If the existing fence was not permitted, a fence permit is required for the replacement fence.
Permit applications must be applied for electronically using Apply Online link in the process box. Electronic applications can be made at any time. A non-refundable filing fee must be paid at the time of application.
For more information, visit the DPS website and check out the frequently asked questions and answers section.