Contractors and construction in District of Columbia: licenses and permits
Business registration
Register your LLC or corporation with the DC Department of Licensing and Consumer Protection. Official site
Trade license
District of Columbia licenses or registers contractors at the state level for at least some work, often home improvement or jobs above a dollar amount. Check what your trade and job size need. District of Columbia details
Sales tax permit
Register with District of Columbia before your first taxable sale. Register in District of Columbia
City or county license
Most cities and counties require a general business license or tax receipt, and some require a zoning check for home businesses. Call your city hall or county clerk.
Federal
Every business with employees needs an EIN, and it's free. Get it free
Full District of Columbia guide
General guidance from public sources; rules change and vary by city. Confirm with the agency before you start work.