This study describes the use of a state-of-the-art urban parameterization (the Town Energy Balance scheme, TEB) to examine how the surface energy and water balance of the Brussels Capital Region (BCR) responded to historical urbanization (1960-1999) and how it will respond in cases of climate changes and/or future urbanization. Key for this study is that both energy and water balances are resolved and interact through the evaporative term. Historical urbanization of BCR is estimated from changes in impervious surface area using remote sensing imagery and future climate is modeled using data from two members of the European project PRUDENCE.Abstract?????