The Rice Fergus Miller office building in Bremerton, Washington, is among only a handful of buildings ever to receive more than 90 LEED points. It has a remarkable energy efficiency level of 21Kbtu/SF, making it possible to reach Net Zero Energy with a large enough solar array on the roof (when they can afford to install it). The building had an extremely affordable construction cost of $105/SF and was a renovation of an historic old dilapidated building in the heart of Bremerton. This building is a model for deep energy savings in existing buildings without huge budget and without tearing down old historic buildings.
http://buildings.newbuildings.org/overview.cfm?projectID=2136