top cx logo
cx logo
Explorearrow down
search icon

Can we turn our garage into a spare room?

We no longer use our car and have no more need for our garage so, as it is built on to the house, would it be possible to turn it into a spare room for visitors?Can you say how we should go about it and what formalities we need to complete?  T.M.

Turning your garage into a spare room is easier and cheaper than building an extension and the formalities are not complex as long as your garage is not too large.

If the work will cover an area of more than 5m², which it will for a garage, you must make a déclaration préalable de travaux to your mairie. If it will cover more than 20m² you should check with the mairie if you need to apply for a permis de construire building permit and also ask if this is needed if changing the garage door counts as modifying the exterior appearance of the property.

The déclaration préalable has been made simpler and quicker this year and you can ask the mairie for the form to complete and to confirm if there are any restrictions in the plan local d’urbanisme, if there is one, such as making sure a parking space is still available.

As you are turning a garage into a room, you should also think about suitable insulation for its new usage and, perhaps, heating.

There will be some effect on your local taxes, with the extra floor space perhaps increasing your taxe d’habitation plus you may face the taxe d’aménagement.

Question answered by Sarah Bright-Thomas of Bright Avocats

Tel: 05 61 57 90 86 -

If you have a legal query send it to

Resident or second-home owner in France?
Benefit from our daily digest of headlines and how-to's to help you make the most of life in France
By joining the newsletter, you agree to our Terms & Conditions and Privacy Policy
See more popular articles
The Connexion Help Guides
featured helpguide
Income Tax in France 2023 (for 2022 income)*
Featured Help Guide
- Primarily aimed at Britons, covers pensions, rent, ISAs, shares, savings and interest - but also contains significant general information pertinent to readers of other nationalities - Overview of online declarations + step-by-step guide to the French printed forms - Includes updates given automatically after this year's site opened
Get news, views and information from France