Brussels Environment developed a strategy from 2004-2015 to promote sustainable buildings in Brussels. The strategy aimed to (1) stimulate demand through financial incentives and exemplary projects, (2) improve knowledge and skills, and (3) improve supply through training and partnerships. This led to over 500,000 square meters of sustainable buildings constructed or renovated, including many passive houses. The strategy also grew the energy budget and agency staff. Going forward, Brussels Environment will focus on sustaining the market and ensuring quality through monitoring and skills development.