On 17 June 2005 the Flemish Government adopted the rules applicable for becoming recognised energy expert for dwellings at the level of the Flemish Region. The recognised energy experts will be allowed to apply the energy advice procedure (EAP) which gives on a voluntary basis energy advice about existing single-family houses. Energy experts that can demonstrate their experience in this field can be recognised. The other way is to take training courses followed by exams. The EAP launched at the Belgian level is a first important step towards the mandatory energy certification of residential buildings in case of sales or rent.