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ENERGY STAR Labeled Building Profile

515 Post Oak
515 Post Oak Suite 140
Houston, TX 77027
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515 Post Oak is a 12-story, Class-A office building located in Houston, Texas. The building, constructed in 1980, is owned and managed by Columbia Property Trust, a national purchaser and manager of Class-A office buildings across the United States.


Columbia has installed new high-efficiency cooling towers, chilled water pumps, and chillers, all with variable-speed drives, to provide a significant reduction in electricity used to air condition the building. Efficient lighting fixtures were incorporated into a recent lobby renovation.


Water-saving measures featured at 515 Post Oak include upgrading faucet aerators in restroom sinks to 0.5 gpm, replacing all restroom fixtures with Water Sense reduced consumption units, installing automatic flush valves in the restrooms, and upgrading 80 percent of the irrigation system from conventional spray heads to a drip system, all to reduce water usage.


515 Post Oak has been awarded the ENERGY STAR for six years in a row (2007-2012). With ongoing energy-saving initiatives and operational improvements, 515 Post Oak has improved its initial energy performance score of 75 in 2007 to a score of 90. With the recent central plant upgrade, Columbia Property Trust expects to realize additional energy savings that will further improve the ENERGY STAR score.





Please note: Narrative information in this profile has been provided by Columbia Property Trust or a representative of this facility. Other building information was verified and submitted to EPA at the time of application. Building energy performance, operating characteristics, and ownership/management may be subject to change over time.

Building Owner:*
Columbia Property Trust

Property Manager:*

Year(s) Labeled (Rating):
2007 (88)
2008 (87)
2009 (82)
2010 (91)
2011 (94)
2012 (97)
2016 (88)

Facility Type: Office

Total Floorspace: 288019 sf

Year Constructed: 1980

Contract Type: None

Technologies Used:
   Stage 4-Fan Systems
   Stage 5-Heating and Cooling Plant