The Penobscot Building is one of Detroit’s most recognizable office landmarks, offering flexible leasing opportunities in the heart of the Central Business District. Located at 645 Griswold Street, the building provides direct access to Downtown Detroit’s courts, government offices, restaurants, hotels, entertainment venues, and major transportation routes.
Available options range from smaller office suites to full floors and large contiguous blocks, making the property suitable for professional firms, government agencies, corporate offices, call centers, and other large-scale users. Ownership is prepared to work with tenants on customized build-outs and space configurations tailored to their operational needs.
The approximately one-million-square-foot complex features impressive historic architecture, professional on-site management, building security, multiple elevators, and convenient access to nearby parking and public transportation. Tenants enjoy a prestigious Downtown Detroit address with prominent skyline views and the flexibility to expand within the building.
Contact ownership directly to discuss current availability, lease terms, build-out opportunities, or to schedule a private tour.
Alex Loewy
Triple Properties Detroit LLC.
