Tax authorities are looking to expand the use of artificial intelligence - currently being used to help track undeclared swimming pools - to identify other undeclared constructions.
The same system used to find swimming pools - a mixture of aerial photography from Google that is then cross-referenced with targeted software against information held by the tax authorities - will be used.
Top of their list are extensions such as verandas as well as garden sheds, which depending on size can be subject to an increase in local property taxes as well as a one-off payment on construction.
Pergolas - as long as they are not enclosed like a veranda - do not require a declaration, however.
It is part of the Direction générale des Finances publiques (DGFiP) plans to continue to fight against tax fraud and ensure the information they hold is up to date.
‘Up to ten percent’ of constructions undeclared to authorities
“It is not a question of sheds of less than 5 m² but rather of 10 - 15 m² that could be used as an additional room,” a tax authority spokesperson told Le Figaro.
This also includes other work that requires a déclaration préalable de travaux or permis de construire to be submitted to the mairie but that has not been declared to tax authorities, such as room extensions.
This had led to an increased number of omissions over the years that the DGFiP now wants to chase.
France’s main tax body, the DGFiP believes around “one to ten per cent” of such extensions are undeclared and thus not being taxed as they should be.
The trial will begin in a few (as of yet unknown) departments in 2024 before being rolled out across the country.
The eyes of the authorities are also still on undeclared pools and going after these has raised around €50 million in unpaid taxes for government coffers.
Figures for how many undeclared pools were captured by the scheme are expected to be published at the end of the year.
If you have an undeclared shed or veranda, you still have time to declare it to authorities before their hunt starts - and the extension may be included as part of France’s new mandatory property form.