District of Columbia Home Services And Local Resources

A District of Columbia rowhouse project benefits from one drawing that shows every proposed exterior change. Roofing, solar panels, vents and access structures can affect the same roof but follow different technical reviews. Check the contracting business through the Department of Licensing and Consumer Protection, and confirm the permits with the Department of Buildings. For a historic property, the Office of Planning's preservation guidance adds material and visibility considerations. Ask the contractors to coordinate mounting details and future maintenance access before finalizing the roof. Keep preservation approval, permit documents and warranties together so a later panel removal or roof repair can follow the original design.