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Department of Buildings

In observance of the Emancipation Day holiday, DOB will be closed on Tuesday, April 16, 2024; no construction will be allowed on this day without an after-hours permit. You may report illegal construction by submitting an Illegal Construction Inspection Request Form during normal business hours or by calling 311.

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Welcome to the Department of Buildings

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Get a Building Plat

When you apply for a building permit to do exterior work on your property such as building an addition or adding a deck, you must include a building plat.

A plat map that includes drawings of all existing and proposed property improvements such as the house, the driveway, the deck you want to build. The plat must also show all trees that measure at least 4.5 feet above ground and have circumferences of 12 inches or more.

You may order a building plat in person from the Office of the Surveyor or online. Instructions for Ordering Building Plats Online. You can email your building plat to the Office of the Surveyor for a digital certification signature. Instructions included in the Building Plat Digital Certification Guide.

How to Show Improvements on Your Plat

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