Building Permits in Gaithersburg, MD

Check permit requirements for home improvement projects in Gaithersburg. Select a project type below to see local requirements, estimated fees, and how to apply.

77 Permit Rules

20 Project Types

$50 – $5,000 Permit Fee Range

IRC 2018 Building Code

Key Exemptions in Gaithersburg

These projects typically don't require a building permit in Gaithersburg:

Cosmetic updates are exempt.

Freestanding decks under 30 inches are exempt.

Replacing an existing driveway in the same footprint with no changes to the curb cut is generally exempt from permit requirements.

Replacing a fixture is exempt.

Backyard fences 6 feet or under are exempt.

See all rules by selecting a project type below, or use our free lookup tool for a personalized answer.

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Swimming Pool / Hot Tub

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Gaithersburg Building Department

NameGaithersburg Building Inspection

Phone(301) 258-6330

WebsiteVisit website

Address31 S Summit Ave, Gaithersburg, MD 20877

HoursMon-Fri 8am-5pm

Nearby Cities in Maryland

Baltimore Columbia Germantown Silver Spring Frederick Rockville Bowie Towson

Permit Guides

Read our in-depth guides for common home improvement projects:

Deck Guide Fence Guide Shed Guide Roof Guide Bathroom Guide Kitchen Guide Pool Guide Electrical Guide Plumbing Guide HVAC Guide Garage Guide Addition Guide Basement Guide

Disclaimer: Always confirm with your local building department before starting your project. PermitMint provides general guidance, not legal advice.