Miss the June 30 Deadline and Pay €150 Per Property: What France Homeowners Must Do Now
Update your record by 30 June 2026 or face a €150 fine per property
If you own property in France, you need to act before 30 June 2026. The French tax authorities require owners to declare any change in the use or status of their homes via the biens immobiliers system on tax.gouv.fr. Our analysis of the official guidance and recent reminders shows this is not a one-off request — it is an annual check tied to tax assessments. For owners, investors and expats who hold real estate in France, the consequences are clear: a €150 administrative fine for each property that should have been updated but was not.
This article explains who must file, what counts as a change, how to update the record online or on paper, and practical steps owners should take now to avoid fines or incorrect tax bills. We also outline implications for second homes and landlords who use properties for seasonal lets.
What the biens immobiliers system is and why authorities use it
The biens immobiliers portal was introduced in 2023. At that point every property owner had to supply basic information about each property they own. The data include:
- occupancy status (main home, second home, vacant)
- property type and number of rooms
- annexes and additions such as swimming pools and garages
Since the initial filing, owners only need to update information if the situation of a property has changed during the year. The data are used by tax authorities to determine which taxes apply, in particular the taxe d’habitation on second homes. Accurate registration avoids misapplied charges and ensures local tax assessments reflect current use.
Who must declare a change and what counts as a change?
Only properties that experienced a change between 2 January 2025 and 1 January 2026 need to be updated before the deadline. If nothing changed, the original 2023 declaration remains valid and no action is required.
A change in situation includes the following events:
- A new owner or tenant
- A property becoming vacant
- A change in use, for example a property switching from a main residence to a second home, or being offered as seasonal tourist accommodation
- New additions to the property such as a swimming pool, an extension or additional rooms
If any of these events occurred during the specified period, the owner must update the details in their personal space on tax.gouv.fr using the gérer mes biens immobiliers section.
How to update your property information: step-by-step
There are two filing routes: online via tax.gouv.fr or on paper through your local tax office. The online path is faster and is being promoted by authorities because it integrates with income tax declarations.
Online steps (recommended):
- Log into your personal account on tax.gouv.fr with your usual credentials. You will need a numéro fiscal to log on. If you do not have one, consult the official guidance to obtain it before the deadline.
- Go to gérer mes biens immobiliers in your personal area.
- Select the property you want to update from the list that appears.
- Scroll to the end of the property information and click Déclaration d’occupation to make changes.
- Verify that all fields are accurate, including room count and annexes, then submit.
Paper option:
- Collect the relevant paper form from your local tax office or a France Services centre. Complete the form and post it back to your local tax office.
Authorities advise combining this update with the income tax declaration process, which opened on 9 April, because the online system prompts filers to confirm or update property data during income tax submissions.
Special rules on new constructions and extensions
Separate rules exist for new constructions and improvements that affect local planning taxes. Under the tax on developments (taxe d’aménagement) rules, owners should have reported new works such as pools or extensions within 90 days of completion. Authorities now accept these declarations through the biens immobiliers portal. That means works completed in 2025 may already be recorded, but you should check.
If you carried out works and did not file the 90-day notice, log into the portal and verify whether the authorities hold correct information before 30 June 2026. If a project is already recorded, you have less to do. If not, supply the details and supporting paperwork so the administration can reassess your property data correctly.
What this means for different types of owners and investors
Owners and investors face different practical consequences depending on their situation. Here is what we advise from a tax and compliance perspective.
Owner-occupiers
- If your main home status did not change you can do nothing; the 2023 declaration remains valid.
- If you moved out and the property became a second home or vacant during the reporting period, update the occupation status to avoid misclassification on local taxes.
Second-home owners and seasonal letting
- The taxe d’habitation on second homes is informed by the biens immobiliers data.
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Buyers and sellers
- A change of ownership between 2 January 2025 and 1 January 2026 must be declared. The buyer or seller should check which party is responsible under sale terms but ensure the tax file is updated.
Non-resident owners
- Non-resident owners must still use the same portal and may need a numéro fiscal. If you do not have a tax number, request one early because administration can take time to validate.
- Paper forms and France Services centres are alternatives if you cannot access the online account.
Portfolio owners and real estate managers
- The fine applies per property. If you own several units, failing to update each affected property could multiply the penalty exposure.
- Consider delegating the task to an estate manager or tax advisor who can update multiple listings in one session.
Practical checklist before you log in
Before attempting to update a property record, gather the following documents to make the process quick and accurate:
- Proof of ownership or a copy of the recent notaire act if the property changed hands
- Lease agreement showing tenant details and start date if there is a new tenant
- Evidence of vacancy such as a termination letter or notice period
- Building permits and certificates of completion for any extension or pool, and dates of completion
- Your numéro fiscal and login details for tax.gouv.fr
Having the documentation to hand helps you answer occupation questions precisely and reduces the risk of later corrections or queries from the tax administration.
Risks of non-compliance and common consequences
The headline penalty is a €150 fine per property for failing to file a required update. Secondary consequences arise from incorrect administrative records:
- inaccurate local tax bills, for example the taxe d’habitation on second homes
- possible reassessments if authorities discover undeclared works that affect the tax base
- administrative queries that can take time to resolve and may require submission of supporting documents
The authorities' reminder is evidence they are actively checking compliance. Owners with multiple properties or those who let out properties seasonally should take this seriously because the penalty multiplies per property.
How to avoid mistakes and disputes
I recommend the following practical steps to reduce the risk of errors or disputes with the tax administration:
- Update records promptly when a change occurs rather than waiting for annual rounds
- Keep dated proof of works and letting agreements to support your declaration
- If in doubt about a property's status, consult a tax advisor or your local tax office ahead of the deadline to avoid last-minute corrections
- If you manage several properties, set internal reminders or give a manager responsibility for the biens immobiliers updates
How this ties into income tax filings and administrative timing
The administration urges owners to combine the biens immobiliers check with income tax filings. The online income tax form prompts users to review property details while completing their return. This is a convenient time to verify that the occupation status, annexes and room counts are current.
The window to update occupation changes for the period from 2 January 2025 to 1 January 2026 closes on 30 June 2026. Do not confuse that with the 90-day rule for declaring new works under taxe d’aménagement. If you missed the 90-day window when a pool or extension finished, use the biens immobiliers portal to bring the administration up to date before the June 30 deadline.
My view for buyers, investors and expats
From a practical perspective, the system rewards good record-keeping and penalises sloppiness. If you own property in France I advise treating these updates as part of annual compliance. For investors the administration’s approach is straightforward: data must be accurate, and the cost of inaction scales with the size of your portfolio.
Non-resident buyers should not assume their local tax office will make updates for them. It is the owner's responsibility to ensure the record is correct. That said, the process is manageable: the online portal is set up for the task and paper options exist for those who need them.
Frequently Asked Questions
Do I need to update if nothing changed since 2023?
No. If the information submitted in 2023 remains accurate you do not need to file anything new. The 2023 declaration is still valid.
What is the exact deadline to declare changes that occurred in 2025?
The deadline is 30 June 2026 for any change that took place between 2 January 2025 and 1 January 2026.
How much is the fine for not updating my property information?
The administrative fine is €150 per property that should have been updated but was not.
I am a non-resident owner without a numéro fiscal. What should I do?
You must obtain a numéro fiscal to log into your personal area on tax.gouv.fr. If that is not feasible in time, you may collect a paper form from your local tax office or a France Services centre and post it back. For large portfolios, engage a tax representative or local property manager to act on your behalf.
Final practical takeaway
If your property in France experienced any change in ownership, occupancy, use or physical features between 2 January 2025 and 1 January 2026, update the record in the gérer mes biens immobiliers section of tax.gouv.fr before 30 June 2026, or face a €150 fine per property. For owners of multiple properties, that fine can add up quickly, so check each property’s entry and keep documentary proof of any changes.
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