- Mayor’s Citywide Call Center, 311, Monday–Friday, 7 am–7 pm
- Ward 6 Councilmember Charles Allen
- ANC6a
- ANC6b
- ANC6c
- ANC6d
- Capitol Hill Historic District Map & Brochure
- DC Department of Transportation (DDOT)
- 11th Street Bridges Study
- Pennsylvania Avenue SE Transportation Study
- A List of all DDOT Transportation Studies
- DDOT Urban Forestry Programs and Services
- Capitol Hill Transportation Study – Final Report
- Historic Preservation Agreement: Implementation of Federal Aid Highway Program
- Tree Space Beautification Regulations
- Fact Sheet: Little Free Libraries in Public Space
- Public Realm Design Manual
- DC Office of Planning (OP)
- DC Office of Zoning (DCOZ)
- Department of Consumer & Regulatory Affairs
- Deputy Mayor for Planning & Economic Development
- Architect of the Capitol
- Naval Historical Center (Navy Yard)
- Capitol Space: A Park System for the Nation’s Capitol
- National Capital Planning Commission
- CountyOffice.org (nationwide search tool)