This paper undertakes the economic impacts coming from a strong retiree migration towards a geographic area. The appearance of retiree migration coming from rich countries is expected to produce relevant reactions on the domestic and local economy. First of all the impact is located on the housing market, promoting the house-building, but it also contribute to other services or industries to be expanded, most of them related to the retireeís tastes or way of life. We estimate the housing prices reaction and house-building using data obtained in a project named REVIcVAL in which a significant number of retirees were questioned about their houses characteristics. We construct a pseudo-panel introducing other type of information from secondary data in order to have the needed variables to analyse the markets. Data is a municipal level.