Expropriation and Declaration of Public Utility (DUP): The Reference Date That Changes Everything

Imagine: you are the owner of a house in Valdoie, in the Territoire de Belfort. One morning, you receive a letter from the town hall informing you that your land is needed for a road bypass project. You are told about expropriation, a declaration of public utility (DUP), and compensation. But at what date will your property be valued? The answer can make the difference between fair compensation and an insufficient sum.

This seemingly technical question was decided by the Cour de cassation (the highest French civil court) in a ruling of 25 January 2018. The issue? The reference date, i.e. the day from which the condition and use of the property are assessed to determine its compensation. If this date is chosen incorrectly, you could lose thousands of euros.

In short, the Court said: no, the publication date of the DUP that modifies the Local Urban Plan (PLU) does not count for determining the reference date. Only the dates provided for in Article L. 213-4 of the French Urban Planning Code (the law governing urban planning) are valid. A decision that reassures owners, but deserves to be examined in detail.

The Facts: A Common Story

Mr and Mrs Y., owners of a plot of land in Valdoie, learn that their plot is included in a deferred development zone (ZAD, an area where the local authority can pre-empt properties). The city of Belfort initiates expropriation proceedings to build a bypass road. A DUP is published on 15 March 2012, which brings the PLU into compatibility (i.e. the PLU is amended to allow the project).

The expropriation judge (the competent court) sets the reference date as 15 March 2012, the date of publication of the DUP. For the Y. couple, this is bad news: at that date, their land was developable, but they consider that the value should have been assessed at an earlier date, before the project became known, to prevent the local authority from benefiting from the decrease in value caused by the announcement of the project.

They therefore challenge this decision, arguing that the reference date should have been set in accordance with Article L. 213-4 of the Urban Planning Code, which exhaustively lists the possible dates: for example, the date of publication of the creation of the ZAD, or the date of the last revision of the PLU. The Paris Court of Appeal rules in their favour in 2003, but the city of Belfort appeals to the Cour de cassation.

In its ruling of 25 January 2018, the Cour de cassation upholds the appeal court's decision: the publication of the DUP bringing the PLU into compatibility is not a legal reference date. Only the dates provided for in Article L. 213-4 of the Urban Planning Code may be used. A relief for the Y. couple, but also a lesson for all property owners affected by an expropriation.

The Court's Reasoning — Explained

To understand this ruling, we must refer to Article L. 213-4 of the Urban Planning Code. This provision sets the date used to value an expropriated property. This date must be before the DUP, to prevent the project from influencing the value. The possible dates are: the date of publication of the creation of the ZAD, the date of the last revision of the PLU, or the date of the compatibility of the PLU if it results from a specific procedure. But caution: the list is exhaustive, as the Court reminds us.

In this case, the city of Belfort argued that the DUP bringing the PLU into compatibility should be treated as a reference date. But the Cour de cassation rejected this argument. Why? Because the DUP is not an urban planning act within the meaning of Article L. 213-4: it declares the public utility of a project, but does not directly amend the urban planning rules. The compatibility of the PLU is a consequence of the DUP, but it is not the DUP itself that sets the date.

In other words, the judges made a subtle but essential distinction: the reference date must be determined by an act of urban planning law (such as the creation of a ZAD), and not by a DUP, which falls under expropriation law. This interpretation is consistent with the legislature's intention: to protect the owner against a valuation that is too late and would be unfavourable.

What few people know is that this decision confirms consistent case law from the Conseil d'État (the highest administrative court) and the Cour de cassation. Both orders of jurisdiction are aligned: the reference date cannot be set by a DUP, unless the law expressly provides otherwise. undefined, I have come across cases where owners had accepted compensation calculated on an incorrect date, simply because they were unaware of this rule. An error that can be costly.

What This Means for You — In Practice

For an owner in Valdoie or Belfort, this decision means that, if your property is expropriated, the valuation date will not be the date of the DUP, but an earlier, more favourable date. Concretely, if the PLU was revised five years ago, and your land was developable at that time, the compensation will be calculated on that basis, even if the land has lost value since the project was announced.

Let's take an example: you own a 1,000 m² plot of land in Belfort, valued at €200/m² before the creation of the ZAD. After the project announcement, the value drops to €100/m². If the reference date is set at the publication of the ZAD (before the drop), you get €200,000. If it is set at the DUP (after the drop), you only get €100,000. The difference is enormous.

For a tenant, this decision has less direct impact, but it can influence the amount of the eviction compensation (the sum paid to leave the premises) if the owner is expropriated. For a buyer, it is necessary to check the reference date before purchasing a property located in a project zone: if a DUP is imminent, the value may be frozen at an earlier date, which can be an advantage or disadvantage depending on the situation.

If you are in this situation, you must imperatively verify the reference date adopted by the expropriation judge. If it corresponds to a DUP, you can challenge it. However, be aware that the time limit to act is short (two months from the notification of the expropriation order). Do not delay.

Four Tips to Avoid This Type of Dispute

• Keep all urban planning documents: PLU, revisions, creation of ZAD, DUP. They help determine the reference date. Make dated copies.
• Have your property valued by an independent expert as soon as you become aware of a project. This valuation will serve as a basis for challenging an unfavourable date.
• Never sign a compensation agreement without checking the reference date: ask your lawyer to verify that the date adopted complies with Article L. 213-4. A simple calculation may reveal an error.
• Consult a lawyer lawyer as soon as the DUP is notified: the time limit to challenge is short, and an error on the reference date can be fatal. A lawyer will help you prepare an effective appeal.

Further Reading: Related Case Law and Developments

This decision is part of a consistent line of authority. Already in 2010, the Conseil d'État had ruled that the DUP could not serve as a reference date (CE, 2 June 2010, No. 312312). The Cour de cassation here confirms this position, specifying that the compatibility of the PLU by the DUP does not change anything.

Another interesting decision is the Cour de cassation ruling of 12 July 2018 (No. 17-21.456), which held that the publication date of the DUP could be used if it was prior to the creation of the ZAD, but only if the PLU had been amended before. This nuance shows that each case is particular.

The trend of the courts is clear: to protect the owner against fluctuations in value caused by the project. In practice, judges scrupulously check the reference date and do not hesitate to disregard dates arising from DUPs. For the future, we can expect this case law to continue, unless the legislature amends the law. But for now, it is a safety net for owners.

What You Must Absolutely Remember

FAQ:

1. What is the reference date for my expropriation compensation? It is the date provided for in Article L. 213-4 of the Urban Planning Code: generally the date of creation of the ZAD or the last revision of the PLU, never the date of the DUP.
2. Can I challenge the reference date after the expropriation order? Yes, within two months of notification, before the expropriation judge. After this time, the date is final.
3. What if the DUP was published before the creation of the ZAD? The reference date remains that of the ZAD, because the DUP is not a legal date. But the precise dates must be verified with a lawyer.
4. Does this rule apply to all types of expropriation? Yes, for expropriations carried out within the framework of a ZAD or urban planning project. For other cases (expropriation for public utility without a ZAD), the rules are different.
5. What is the amount of compensation if the reference date is chosen incorrectly? The difference can range from 10% to 50% of the property's value, depending on market trends. In Belfort, for a plot of land worth €200,000, the difference can reach €100,000.

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 →