HAShen energy problems preoccupy politicians and citizens, an analysis of condominiums built by private development over the past forty years shows a constant reduction in surface area, and sometimes mediocre thermal and acoustic achievements.
The various laws (de Robien, Méhaignerie, Borloo, Duflot, Pinel) and other tax systems that have followed one another for nearly thirty years have often transformed an apartment into a financial product (tax niches or optimizations) with all the excesses that the we know: low quality of buildings due to the search for maximum profitability, small living areas, operations carried out far from employment areas. The resulting consequences are urban sprawl and increased mobility expenditure.
Ad hoc financing
In France, the energy consumed by buildings – including residential condominiums – represents 45% of the total energy consumed and more than 25% of greenhouse gas (GHG) emissions. The thermal renovation plan for the building presented by the government in March 2013 aimed to reduce the energy consumption of buildings by 38% before 2020, and had the objective of renovating 500,000 homes per year from 2017.
Where are we, ten years later? For residential condominiums, very far from the quantitative objectives and, qualitatively, often far below what was hoped for. The lack of quality stems largely from piecemeal funding.
For the energy renovation of residential condominiums, it is necessary to invest more in the “passive”, which is durable, than in the “active” systems which, by definition, are subject to obsolescence.
But, and this is often the weak point of energy renovation projects, it is essential, before the operational phase of such a project, to establish a real “global audit” and not a single “energy performance diagnosis”.
Diagnoses not followed by effect
The implementation, for the co-ownerships, of a draft work plan, including the overall audit, would be a step in the right direction. The establishment of a real global audit with pre-APS (summary preliminary project) is the condition of a quality renovation, carried out according to the rules of the art. It allows, as said [en 2020] Denis Dessus, former president of the National Council of the Order of Architects “ to commit to better comfort, to which 80% of households are attachedto increase the heritage value of the property and to protect the co-owners against the risks of an ill-conceived renovation”.
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