601 D Street, NW
No objection to the concept for modifications to an existing building, including the installation of a rooftop generator and security fencing, replacement windows at the ground floor, bollards at the main entrance, and an in-ground security barrier and guard booth at the garage entrance, as well as structural modifications to several columns at the ground floor, as shown in materials received and dated 4 September 2020, pending the receipt of supplemental materials. Refer to DC Historic Preservation Office. Note: This is a concept approval only. When ready, submit the permit drawings and a permit application to DCRA for review by the Commission.