Logon to your Impots account
There are boxes to fill in to declare your property is your main residence if you haven’t completed this when it came out a couple of yrs ago, you could be paying Taxe dev Habitation
The 3 boxes on my account ask to verify their data is correctabout the property
It’s possible to change what they have on record for your property
ah yes, but it’s still means-tested… not just a free for all… 