Planning Taxes and Building Permits: Liability Remains Intangible

You have just obtained a building permit for a building in Vénissieux. Work has not yet started, a neighbour is challenging the permit before the administrative court, and you are wondering: must I really pay the development tax right now? This question troubles many project promoters, especially when the amounts involved reach several tens of thousands of euros.

The answer from the Cour de cassation is unequivocal: the due date of planning taxes is intangible. In other words, the tax debt arises on the day the building permit is granted, and a legal challenge merely postpones the obligation to pay until the final decision – without cancelling the debt itself. A nuance that changes everything, as illustrated by the judgment of 23 September 2014 (No. 13-21.175).

This decision, handed down by the Cour de cassation, sheds light on the subtle interplay between the French General Tax Code and the Tax Procedures Code. It directly concerns builders, developers and owners who, in Lyon as elsewhere, must anticipate the real cost of their project, even in the event of litigation.

The facts: a story like many that happen every day

In 2007, a developer obtained a building permit for a housing complex. The development tax was calculated, and the first instalment became due. But a third party – a local resident – challenged the permit before the administrative court. The developer, being cautious, did not pay the instalment, considering that the appeal suspended his obligation. The tax authorities, however, demanded payment, plus late payment interest.

The legal saga began. The administrative court dismissed the third party's appeal, but the developer appealed. The Nantes Administrative Court of Appeal, on 16 February 2010, upheld the dismissal. The permit became final. But in the meantime, several years had passed. The authorities maintained their payment demand, with penalties. The developer brought the matter before the tax judge to contest the due date of the taxes during the appeal period.

The lower appeal court ruled in favour of the developer: according to it, the third party's appeal had suspended the obligation to pay, and the payment period ran from the decision of the administrative court of appeal. The authorities appealed to the Cour de cassation. The Cour de cassation quashed the appeal judgment and remanded the case to another court. For the supreme judges, the appeal court had violated the law by confusing the due date of the tax with the obligation to pay.

The reasoning of the court — explained

The core of the dispute lies in the interpretation of two texts: Article 1723 quater of the French General Tax Code (CGI) and Article L. 278 of the French Tax Procedures Code (LPF). Article 1723 quater provides that planning taxes are due on the date the building permit is granted. In simple terms, the tax debt arises at the moment the authorities authorise you to build, and nothing can erase it – not even an appeal against the permit.

Article L. 278 of the LPF provides that when a building permit is challenged by a third party before the administrative court, payment of the taxes may be deferred until the final court decision. But beware: this is only a deferral of payment, not a cancellation of the debt. The Cour de cassation firmly reminds us: "the due date of the taxes is intangible". In other words, the tax claim exists from day one; only the payment is postponed.

This is not a departure from precedent. The court confirms a consistent position: the deferral of payment does not affect the principle of the debt. The lower court judges had mistakenly considered that the third party's appeal had "suspended the obligation to pay" to the point of postponing the due date itself. For the court, the mechanism is clear: the appeal delays the deadline but does not call into question the creation of the tax.

The tax authorities argued for a strict interpretation: once the permit is granted, the tax is due, full stop. The developer, on the other hand, argued that as long as the permit was not final, the tax could not be claimed. The court rules in favour of the authorities in principle, while recalling that the deferral protects the taxpayer from late payment penalties during the appeal period. A subtle balance between the builder's right not to pay before being certain and the Treasury's right to have its claim recognised.

What this means for you — practically

For an owner in Lyon who applies for a building permit for a 40 m² extension, the development tax can amount to €3,000. If a neighbour challenges the permit, you will not pay immediately, but the debt exists. You must therefore provision this amount in your budget, otherwise you risk having to pay it with interest once the litigation is over.

For a property developer in Vénissieux, the amounts are much higher: on a programme of 20 homes, the tax can exceed €100,000. The temptation is great to consider that a third party's appeal cancels the debt. This decision requires you to be rigorous in your management: set aside a provision as soon as the permit is granted, and do not rely on litigation to exempt you. If the appeal fails, the tax authorities will claim the full amount, with late payment interest at 0.20% per month (i.e., 2.4% per year).

For a purchaser of building land, be vigilant: if the seller obtained a permit that is challenged, the tax remains due. Check in the sale deed whether the seller has undertaken to bear this tax in the event of litigation. Otherwise, you could inherit the debt. In practice, ask the tax authorities for a certificate of the amount due and the existence of a deferral.

Finally, for co-ownerships carrying out works subject to a permit, the rule is the same. If you vote for works at a meeting and the permit is challenged, the tax remains due. Provision it in the budget to avoid nasty surprises.

Four tips to avoid this type of dispute

• Provision the tax as soon as the permit is granted. Open a dedicated account or include the amount in your cash flow plan. Never consider an appeal as an exemption.
• Check for the absence of an appeal before signing a preliminary sale agreement. If you are buying land with a recent permit, ask the seller for a declaration on honour that no appeal has been lodged, and require a guarantee of eviction in the event of a challenge.
• In the event of an appeal, apply for a deferral of payment. Article L. 278 of the LPF allows you not to pay until the administrative court has made a final decision. But do not forget that the debt continues: maintain sufficient cash reserves.
• Anticipate late payment interest. If the appeal lasts two years, interest at 2.4% per annum on €100,000 amounts to €4,800. Include this in your litigation budget.

Further reading: related case law and developments

This decision is part of a consistent line. Already, the Conseil d'État judgment of 12 June 2002 (No. 222910) had specified that the deferral of payment provided for in Article L. 278 did not prevent the creation of the tax claim. The Cour de cassation here confirms this interpretation, insisting on the intangible nature of the due date.

A more recent decision of the Conseil d'État (5 December 2018, No. 410677) even extended this logic to deferred development taxes: the triggering event remains the grant of the permit, even if payment is staggered. The trend is therefore towards securing local authorities' tax revenues, to the detriment of builders who hoped for a respite in the event of litigation.

In future, we can expect the legislator to clarify the limitation rules: currently, the tax is time-barred after four years from the date of assessment. But if the deferral lasts, the tax authorities have an additional period to claim the sums. Increased vigilance is therefore required for professionals.

In practice: what to do

FAQ:

1. Can I refuse to pay the tax if the permit is challenged? Yes, you can apply for the deferral of payment provided for in Article L. 278 of the LPF. But beware: the debt still exists. You will have to pay at the end of the litigation, with interest.

2. Does late payment interest accrue during the deferral? No, the deferral suspends interest. But if you do not apply for the deferral and do not pay, interest accrues from the initial due date.

3. What if the permit is ultimately annulled? If the permit is annulled, the tax is no longer due. You can apply for a refund if you have paid. But if only the deferral had been applied for, you are released.

4. How can I prove that I applied for a deferral? Send a registered letter with acknowledgement of receipt to the local tax office, attaching a copy of the appeal. Keep all supporting documents carefully.

Are you in a similar situation? A first 30-minute consultation with Maître Zakine (€45) can save you months of proceedings — and often much more. Book an appointment →