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Department of Buildings

In observance of Independence Day, DOB will be closed on Friday, July 4, 2025; no construction will be allowed on this day without an after-hours permit. You may report illegal construction here or by calling 311. Also as part of online system enhancements, the Permit Wizard will be unavailable due to scheduled maintenance from 10:00 pm EST on Thursday, July 3, 2025, through 7:00 am EST Saturday, July 5, 2025.

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Publications

E.g., 07/05/2025
E.g., 07/05/2025
06/20/2024

Zoning Administrator Interpretation ZA-032: Applying Inclusionary Zoning Standards to Co-living Dwelling Units

05/03/2024

Interpretation ZA-007: Roof Top Architectural Element is superseded in part by D.C. Municipal Regulations Title 11, Subtitle E, Section 204.1 and 204.2. 

ZA-007
05/01/2024

References:

o D.C. Official Code § 7-1761.01, et seq.

o 11 DCMR Subtitle A, Chapter 1.

o 11 DCMR Subtitle B, Chapter 2.

o 11 DCMR Subtitle I, Chapter 3.

o 11 DCMR Subtitle K, Chapter 6.

o 11 DCMR Subtitle U, Chapters 5-8.

02/02/2022

Because the Zoning Regulations contain several provisions regarding the regulation of Accessory Buildings, the Office of Zoning Administration has summarized these regulations in RF zones for clarity: 

ZA-028
02/05/2021

Section D-805.1, which denotes the Wesley Heights Overlay map entitled "Required Front Yard Setbacks” for the R-14 and R-15 zones, illustrates the required front yard setback dimensions for these areas: 

ZA-021
02/05/2021

Section B-304.8 excludes certain portions of an interior of a building from the calculation of Gross Floor Area [GFA]: 

ZA-026
02/05/2021

The Office of Zoning Administration has reviewed several applications where a portion of a top of a building is being used as roof deck which is adjacent to a partial top story at the same level.

ZA-024
02/05/2021

The longstanding practice of the Office of Zoning Administration allows accessory buildings which are non-conforming due to not meeting required yard setbacks and/or contributing to an excessive lot occupancy, to be razed...

ZA-029
02/05/2021

This interpretation summarizes the standard operating procedure (SOP) between DOB’s Office of Zoning Administration and the Office of the Surveyor regarding the condition of a Record Lot that is overlain by an Assessmen

ZA-022
02/05/2021

The Zoning Administrator has determined that a Certificate of Occupancy for an existing hotel would not need to be changed to allow an extended stay hotel operation. A hotel or lodging use is permitted to have short term [i.e.

ZA-027

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