Perspectives. Insights. Results.
1730 Pennsylvania Avenue
Project category
Project market
Renovation & Repositioning
Project location
Washington, DC, District of Columbia
Date of completion
Tishman Speyer
HITT Contracting

This 258,000-SF office building exterior renovation presented an opportunity for the owner to reposition the property into one of Washington’s most prestigious addresses.

Project Challenges

The original concrete backed travertine panel system was failing and was a potential danger to passing pedestrians.
Demolishing the building was not feasible due to a tenant lease remaining on the building.
The tenant would occupy the building while the building was renovated.
New energy codes were required to be met by the building exterior.


The travertine façade was removed and the remaining precast was clad with metal, the outline of which can be viewed behind the modern glass façade.
The building remained occupied during the construction and the design needed to minimize disruption to those tenants.
The façade is visually simple, but was incredibly complex to engineer and install as the tenant occupied the building throughout the construction.
The final design opened the building interior to more daylight and interior space, thus providing a much improved environment for tenants while meeting current, stringent energy code requirements.

Awards & Honors
Design Excellence Award for Divine Detail
AIA Chicago
Our team
Project Leadership
Tsutomu Ben Kishimoto Principal Tsutomu Ben Kishimoto