To counter the issue of rising property costs due to a lack of homes and constructible lots, a new tax reform has been enacted on January 1, 2017. Banque International à Luxembourg has made available this handy summary of the details of this reform here.
In brief, a seller can save money through the reduction of the capital gain tax to a quarter of the global income tax rate. For buyers, there have been put in place several interest reductions on mortgages. I encourage you the read this article put together by Mr. Pierre Clément of NEXVIA.