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Historic Preservation Review (HPO staff / HPRB): Washington, D.C. restaurant guide

Office of Planning — Historic Preservation Office

What it is

Clearance for building permits that affect the exterior of a landmark or a building in a historic district: storefronts, signs, awnings, rooftop exhaust.

When a restaurant needs it

Any permit for exterior work on a historic property.

How to apply

HPO reviews the permit drawings; minor work and storefront upgrades get expedited staff review, while substantial alterations go to the Historic Preservation Review Board.

Documents you’ll need

Fee
No separate fee: HPO review happens within the DOB building permit, and no separate preservation permit is needed
Processing time
Staff clearance same day to 5 business days; HPRB typically 30–60 days from filing
Renewal
N/A
Who files
Owner, architect or expediter submits.

Good to know

Rooftop exhaust fans and signs visible from the street are the usual sticking points. Talk to HPO staff before you finalize the hood route.

Official source

Office of Planning: HPRB vs HPO review · Building permits for historic property

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Last reviewed 2026-10-06. Guidance only, not legal advice.