Petroleum Building Make-over | Office Tower to Residential Apartment Conversion
Petroleum Building Make-over | Office Tower to Residential Apartment Conversion
Downtown Denver’s historic Petroleum Building at 110 16th Street is set for a $45 million transformation from a largely vacant 14-story office tower into 178 residential apartments. Led by Petroleum Building LLC and co-owner Tim Borst, the adaptive reuse will convert 12 floors to housing while preserving ground-floor retail and reimagining the lower and top floors as tenant amenity spaces.
The project, designed by Gensler with PCL Construction as general contractor, will modernize building systems, refresh the mid-century façade, and add community gathering areas, pet facilities, and updated lobbies, marking one of the city’s most prominent office-to-residential conversions.
As of 8/8/2025 this project was under official review.
Project Team:
Architects: Gensler
General Contractors: PCL Construction
Civil Engineering: The Vertex Companies, LLC
MEP: Galloway & Company
Structural Engineer: Martin/Martin Consulting Engineers
Electrical Engineer: MV Consulting Inc.
Lighting: ILC Studios
Plumbing: Galloway & Company
