Washington DC Solar Instant Permit Guide

Washington DC offers an instant solar permit path for eligible one- and two-family residential properties, while historic properties and non-qualifying systems use the standard DOB permit process.

Permit takeaway

DOB directs one- and two-family residential solar projects to the Building Instant Permits category when eligible, and to the Permit Wizard when the project does not qualify.

Zoning and placement

Solar systems must meet District construction code and zoning requirements, and rowhouses or townhouses may need neighbor notification.

Building and trade review

DOB states that a separate electrical permit is needed for solar panel installation, and solar instant permit final approved inspections must be completed within the required permit window.

Call before applying when

Call before applying if the property is historic, the system exceeds the instant-permit criteria, the project includes service upgrades, or the roof structure may need additional review.

Documents to prepare

• Solar layout
• Equipment specifications
• Electrical details
• Roof information
• Historic or neighbor notification information if applicable

Inspection planning

• Confirm instant permit eligibility
• Apply through the correct DOB portal
• Coordinate electrical permit needs
• Use approved third-party inspection when required
• Complete final approved inspection

Official sources

• DC DOB Energy and Green Building Solar
• DC DOB Solar Panel Permit
• DC DOB Instant Permits

This guide is a planning summary. Always verify the current requirements with the local office before starting work.