1144 Fifteenth


1144 Fifteenth is a high-rise building in downtown Denver, Colorado. Completed in 2018, the 40-story tower rises approximately. The building occupies a full city block bounded by 15th Street, Lawrence Street, and Arapahoe Street, near Union Station in Denver’s central business district.

Design and construction

1144 Fifteenth was developed by Hines, a global real estate development firm, and designed by the architectural firm Pickard Chilton. The building was constructed by Hensel Phelps.
Construction began in 2015 and was completed in 2018. The building contains approximately 665,000 square feet of Class AA office space, with ground-level retail and structured parking. The structure features large, column-free floors and a glass curtain-wall façade designed to maximize daylight and views of downtown Denver and the Front Range. Amenities include conference facilities, tenant lounges, bicycle storage, and fitness-oriented features. The building also incorporates outdoor terrace spaces on select levels.

Sustainability

1144 Fifteenth achieved LEED Gold certification under the U.S. Green Building Council’s BD+C rating system. Sustainability measures include high-performance glazing, efficient mechanical systems, water-conserving fixtures, and strategies to improve indoor environmental quality.

Awards