District Offices provides a variety of options to fit any work style or industry. Our goal is to provide an office solution for tenants ranging from solopreneurs to Fortune 500 companies. The Blake Building is a prime Washington, DC office building located in the heart of the CBD, on Connecticut Avenue and L Street. This HUBZoned building is just three blocks from the White House, one block from the Mayflower Hotel, and close to numerous restaurants, hotels, shops and transit.