CSL was the OPM on this environmentally friendly building. HouseZero is intended to address one of the biggest energy problems in the world today — inefficient existing buildings. Its design was driven by the goals of nearly zero energy for heating and cooling, zero electric lighting during the day, operating with 100 percent natural ventilation, and producing zero carbon emissions. The building is intended to produce more energy over its lifetime than was used to renovate it and throughout its subsequent operation.

$4 million