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Certificate of Occupancy

The purpose of a Certificate of Occupancy (“COO” or “C of O”) is to ensure that the use of a building, structure or land in the District of Columbia conforms to the Zoning Regulations (DCMR Title 11) provisions of the DC Construction Codes, and the Green Building Act.

In most cases, no person can use a building, structure or land in the District of Columbia for any purpose other than a single-family dwelling, until a valid Certificate of Occupancy has been issued. 

Get a Certificate of Occupancy


  1. Certificate of Occupancy Types
  2. Ownership Change
  3. Use Change
  4. Occupant Load Change
  5. Revision
  6. Temporary Occupancy
  7. New Building (there are three subsets)
    • Conditional
    • Completion of core and shell
    • Establishment of a new occupancy

For more information about the types of Certificate of Occupancy Applications and instructions for completing an application, view C of O FAQs.

Application Process - Change of Ownership

Change of ownership application process

Application Process - All Other Types

All of types application process

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