1144 Fifteenth

1144 Fifteenth
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
Completed
2018
Cost$300 million
OwnerHines
Height
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.

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

See also

References

  1. 1 2 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. 1 2 "Project of the Year, Office/Retail/Mixed-Use Development Best Project: 1144 15th Street Office Building". Engineering News-Record. Retrieved 2025-12-28.