Drawing on a mixed method study in the province of West Flanders, we plead in this article for an upscaling of housing policies in Flanders. Based on a quantitative analysis of migration data for the whole province in 2009 and 2010, we make it obvious, first, that housing dynamics do not take place at the scale of individual towns and municipalities, but at the larger scale of regional housing markets. Based on a qualitative analysis of interviews and focus groups with housing specialists from both the public and the private sectors, we will sum up, afterwards, six challenges that will affect these regional housing markets in the near future. They relate to the necessity of additional dwellings, the expansion of the social housing sector, the development of regulations for new dwellings, the renovation of the existing housing stock, the spatial distribution of building plots and the liveability of smaller cores. Because the inter-municipal competition for double income families that comes with the current policy climate leads to spatial fragmentation, building quality deterioration and a disregard for the needs of several types of households, we advocate an upscaling of housing policies so that different municipalities belonging to the same regional housing market would address these six challenges together.