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The Aventine

Photo credit: Glenborough, LLC


  • Location: La Jolla, CA
  • Climate Region: 3B: Warm - Dry
  • Building type(s): Commercial office
  • Renovation of a 1990 building, last renovated in 2008
  • 253,000 ft2 (23,500 m2)
  • Project scope: 11-story building
  • Suburban setting
  • Rating: EPA Energy Star --Level: 100

Built in 1990, the Aventine is a Class A office building designed by Michael Graves, one of the famous "New York Five" architects dedicated to modernism. The Aventine is located in La Jolla, California and consists of an eleven-story office tower, an adjacent six-story office building, and a three-level underground parking garage.

The Aventine is certified LEED Existing Building Platinum and has an Energy Star rating of 100, the highest possible, and uses just 23 kBtus/sf, 75% less than the national average for offices. Retrofits addressed high-energy loads by replacing compressors and installing chillers, lighting and controls.

Environmental Aspects

A combination of strategies were used to reduce energy use at Aventine from a pre-retrofit level of 62 kBtu/sqft to a post retrofit energy use intensity of only 23 kBtu/sqft. Some of the key elements contributing to this 63% reduction in energy use include:

  • Replaced chiller compressors
  • Automated chiller controls
  • EPA cool roof
  • Lighting retrofit
  • Automated lighting controls
  • Daylighting: 50% daylighting views
  • Whole Building Control & Mgmt by piloting integrated energy information systems program

[Added to the HPB database by New Buildings Institute - Vancouver, WA]

Owner & Occupancy

  • Owned by Glenborough LLC, Corporation, for-profit
  • Typically occupied by 315 people, 40 hours per person per week


Commissioning, Performance measurement and verification, Operations and maintenance, Massing and orientation, Airtightness, HVAC, Lighting control and daylight harvesting, Efficient lighting, Daylighting

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Case Studies Database provided by the U.S. Department of Energy's
Building Technology Program, High Performance Buildings.


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