1144 Fifteenth

1144 Fifteenth
Interactive map of the 1144 Fifteenth area
General information
StatusCompleted
TypeOffice
Location1144 15th Street, Denver, Colorado, United States
Coordinates39°44′52″N 104°59′44″W / 39.7477°N 104.9956°W / 39.7477; -104.9956
Completed2018
Cost$300 million
OwnerHines
Height603 feet (184 m)
Technical details
Floor count40
Floor area665,000 sq ft (61,800 m2)
Design and construction
ArchitectPickard Chilton
Main contractorHensel Phelps
Website
1144fifteenth.com

1144 Fifteenth is a high-rise building in downtown Denver, Colorado. Completed in 2018, the 40-story tower rises approximately 603 feet (184 m). 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.[1]

Construction began in 2015 and was completed in 2018.[2][3] 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.[4] 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.[1][5]

Awards

  • ENR Mountain States 2018 Project of the Year, Office/Retail/Mixed-Use Development[5]

See also

References

  1. ^ a b Tubbs, Tyler (2016-07-18). "1144 15th Street: Striking gold in Denver (USGBC Colorado)". U.S. Green Building Council. Retrieved 2025-12-28.
  2. ^ Rusch, Emily (2015-06-09). "Construction begins on new Denver skyscraper". The Denver Post. Retrieved 2025-12-28.
  3. ^ Rusch, Emily (2017-01-26). "Denver's tallest skyscraper in 30 years, 1144 Fifteenth, on schedule for 2018 opening". The Denver Post. Retrieved 2025-12-28.
  4. ^ "1144 Fifteenth". Council on Tall Buildings and Urban Habitat.
  5. ^ a b "Project of the Year, Office/Retail/Mixed-Use Development Best Project: 1144 15th Street Office Building". Engineering News-Record. Retrieved 2025-12-28.