Deck Permit in Montgomery County, Maryland
- Permit Required
- Yes
- Authority
- Montgomery County
- Last Verified
- 2026-09-29
What the official source says
“A building permit is required for all decks regardless of the height above grade.”
montgomerycountymd.gov
“Other applications will be taken in and reviewed through regular review process. For adequately prepared applications it may take up to 17 days to issue the permit.”
montgomerycountymd.gov
Verify before you build — primary source for this page: https://www.montgomerycountymd.gov/department-permitting-services/all-permits/residential-permits/residential-decks-permit-process
Application Process
Processing time: Other applications will be taken in and reviewed through regular review process. For adequately prepared applications it may take up to 17 days to issue the permit..
How to apply
- Confirm the rules for your address with Montgomery County — the official sources on this page are the place to start.
- Prepare a simple site plan or drawing showing where the deck work goes and its size.
- Submit the application online and pay the permit fee.
- Schedule the required inspections and keep the approved permit on site.
More detail: our deck permit guide.
Building Department
Montgomery County
Official Sources
FAQ
Do I need a deck permit in Montgomery County, Maryland?
Yes. A permit is required for deck work in Montgomery County. The official source says: “A building permit is required for all decks regardless of the height above grade.”
How much does a deck permit cost in Montgomery County, and how long does it take?
The fee is set by the local permit office. Processing time: Other applications will be taken in and reviewed through regular review process. For adequately prepared applications it may take up to 17 days to issue the permit..
Where do I apply for a deck permit in Montgomery County?
Applications go to Montgomery County. You can apply online: https://www.montgomerycountymd.gov/department-permitting-services/all-permits/residential-permits/residential-decks-permit-process