Architects, general and specialized contractors who perform energetic home renovations are facing some real challenges. First, the 'status quo' 'causes technical problems and uncertainty. There are also questions about the reliability of techniques. Alternatively, the customer usually has a limited budget, so we work very phases. Reno phase aims at addressing the extensive, incremental energy renovation of homes in a structured way, to achieve a high quality and sleek renovation. The different phases of a renovation process be followed: - Diagnosis - Design - Execution - Informing and advising the Customer