Urban Pre-emption Right: The Determining Reference Date for Price Fixing

You are the owner of a plot of land in Les Ponts-de-Cé, in Maine-et-Loire, and one day you receive a letter from the town hall: your land is being pre-empted. The price offered seems derisory to you. You wonder: "On what basis has the municipality fixed this amount?" The answer lies in a single date: the reference date of the planning document.

This question, crucial for any owner facing an urban pre-emption procedure (the right of the local authority to buy a property put up for sale in priority), was decided by the Court of Cassation in a judgment of 20 March 2013. The judges recalled that this date is not left to chance, but corresponds to the date of approval of the local urban plan (PLU) which delimits the pre-emption zone.

But what does this actually change for you? And how can you know if your municipality has complied with the rules? An analysis of a decision that links town planning and land valuation.

The facts: a story that happens every day

In 2003, the municipality of Angers (whose jurisdiction covers Les Ponts-de-Cé) had declared the creation of a land reserve to be in the public interest. At the time, the land use plan (POS) established an urban pre-emption right (DPU) over certain areas. In 2007, the municipality adopted a local urban plan (PLU) – the document that replaced the POS. The PLU maintained the same pre-emption zones. However, an owner, Mr X, whose land located on the boundary of Saumur was subject to a pre-emption procedure, challenged the price offered by the municipality.

His argument? The reference date for valuing the property should be that of the former POS, i.e. 2003, because the DPU had been instituted at that time. According to him, the transition to the PLU had not "refreshed" the reference date, and therefore the value of his land should be assessed at its 2003 level – which was favourable to him if prices had fallen. The municipality, for its part, argued that the reference date was that of the approval of the PLU in 2007.

The dispute went through the courts: first the Tribunal de grande instance of Angers, then the Court of Appeal, and finally the Court of Cassation. Each stage turned on the same question: which date should be used to fix the price?

The reasoning of the court — dissected

The Court of Cassation upheld the judgment of the Angers Court of Appeal, which had ruled in favour of the municipality. The judges applied Article L. 213-6 of the Planning Code (which sets the reference date for valuation in pre-emption matters). This provision states that the reference date is that of the planning document in force which delimits the zone in which the property is located.

In this case, the PLU had been approved on 24 September 2007 and had become enforceable against third parties (i.e. applicable to owners). The Court of Appeal had noted that the Planning Code did not expressly provide for the lapse (cancellation) of the resolution instituting the DPU upon the transition from the POS to the PLU. Moreover, the graphic documents of the PLU explicitly stated that the earlier DPU was maintained. Therefore, the reference date was indeed that of the approval of the PLU.

In short, the judges considered that the DPU "survives" the revision of the planning document, as long as the new document expressly retains it. However, caution is required: if the PLU had abolished the DPU in the area concerned, the reference date could have been called into question.

What few people know is that this solution is consistent with the logic of planning law: the value of a property is linked to the planning rules in force on the date of pre-emption, and not to old rules. "The pre-emption right follows the planning document," one might summarise.

What this changes for you — in practice

For landlord owners: If you own a building plot in Saumur and the municipality notifies you of a pre-emption decision, check the reference date mentioned in the document. It must correspond to the approval of the PLU in force, not an old POS. If the municipality uses an earlier date, the price could be undervalued – because prices may have increased in the meantime.

For buyers: If you are considering buying a property subject to pre-emption, be aware that the municipality can substitute itself for you in the sale. The price it will pay will be set by the expropriation judge, taking into account the reference date. If this date is recent, the price will be closer to the current market.

For co-owners: Less directly concerned, but if your co-ownership is located in a pre-emption zone, a sale by lots could be blocked by the municipality.

Example: imagine a plot in Les Ponts-de-Cé worth €100,000 in 2007, but €120,000 in 2013. If the municipality used the 2003 date (former POS), the price might be fixed at €90,000 (a decrease between 2003 and 2007). Using 2007, the price will be closer to €100,000. The difference is significant.

If you are in this situation, you should: 1) Check the PLU at the town hall; 2) Consult a lawyer lawyer if the date seems wrong; 3) Challenge the price within two months of notification.

Four tips to avoid this type of dispute

• Check the applicable planning document: Before putting a property up for sale in a potentially pre-emptable area, consult your municipality's PLU (available at the town hall or online). Identify the PLU approval date and the pre-emption zones.
• Anticipate the declaration of intention to alienate (DIA): When selling, you must file a DIA with the town hall. This is when the municipality can exercise its DPU. Ensure that the proposed price is consistent with the property's value as of the PLU reference date.
• Keep all previous planning documents: If you challenge the price, you will need to prove that the municipality made an error on the reference date. Keep old POS, resolutions instituting the DPU, etc.
• Have your property valued by an expert: An independent valuation will allow you to compare with the municipality's offer. If the gap is significant, you can refer the matter to the expropriation judge.

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Further reading: related case law and developments

This judgment is part of a consistent line of the Court of Cassation. Already in 2010 (Civ. 3e, 10 November 2010, No. 09-70.057), the judges had specified that the reference date was that of the planning document in force, even if the DPU had been instituted under an earlier document. The 2013 decision confirms and strengthens this solution.

Since then, the ALUR law (2014) has simplified the DPU, but the principle remains unchanged. Courts continue to apply this rule. In practice, municipalities tend to secure their PLUs by explicitly stating the retention of earlier DPUs.

For the future, the question could arise when the PLU is amended after its approval: the reference date would then be that of the amendment, if it affects the pre-emption zone.

Frequently asked questions

What is the reference date for calculating the price in case of pre-emption?
The date of approval of the local urban plan (PLU) in force at the time of pre-emption, or, failing that, the date of the land use plan (POS) if it is still applicable.

Can I challenge the price offered by the municipality?
Yes, within two months of notification of the pre-emption decision. The expropriation judge will fix the price taking into account the reference date.

What should I do if the municipality uses an incorrect reference date?
Refer the matter to the expropriation judge, proving that the applicable planning document is different (e.g., PLU approved in 2010 and not 2007).

Can the DPU lapse upon the transition from the POS to the PLU?
No, unless the PLU expressly abolishes the DPU in the area concerned. Case law considers that the DPU is maintained as long as the new document retains it.

What is the cost of a challenge?
Lawyer's fees range from €1,500 to €5,000 depending on complexity. A preliminary 30-minute consultation (€45) can assess your chances.

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 →