You own a non-buildable leisure plot and would like to receive mail there. The problem is simple: without an official address, there is no mailbox recognized by La Poste, no delivery, and complicated administrative procedures. Obtaining a postal address on a non-buildable plot is possible, but the process must go through the town hall, not through personal initiative.
Addressing on non-buildable land: why the town hall decides alone
Installing a mailbox at the edge of your plot and notifying the mailman is not enough. Since the 3DS law of February 21, 2022 (articles 169 and 170), addressing is exclusively the responsibility of the municipality. It is the municipal council that names the streets and assigns the numbers.
This data is then integrated into the National Address Database (BAN). As long as your plot is not listed there with a validated number, La Poste does not recognize it as a delivery point.
In practical terms, this means that even if your plot is accessible by an identified path, you must obtain a formal decision from the town hall for a postal number to be assigned to it. You will find details on the issue of postal addresses on leisure plots with Immobilier 74, which outlines the conditions based on the zoning of the plot.
Addressing certificate for a leisure plot: the concrete steps
You have identified your plot on the cadastral map. What is the next step? You need to request a certificate of addressing (also known as a numbering certificate) from your town hall. This official document certifies that an address is assigned to a specific location.
Steps to follow with the town hall
- Go to the urban planning department of your municipality with the cadastral reference of your plot and a location plan showing access from the public road.
- Submit a written request for a number assignment. Some municipalities have a dedicated form, while others accept a free-form letter.
- The town hall checks that the plot is served by a named road. If not, it must first proceed with naming the road, which can take several months.
- Once the number is assigned, it is recorded in the National Address Database. You can then install your mailbox and notify La Poste of the address.
In rural municipalities, roads are not always named. The decree of August 11, 2023, regarding the availability of addressing data encourages municipalities to complete their database, but some isolated areas remain unnamed. If your plot is in this situation, the process will take longer: you will have to wait for the municipality to finalize its addressing plan.
Postal address and urban planning: two distinct matters
This is the point that many leisure plot owners confuse. Receiving an official address does not grant any additional rights regarding the occupation of the land.
Addressing is an administrative and postal operation, not a planning permission. Your mobile home, caravan, or light leisure dwelling can have an address recognized by La Poste while still being irregular under the local urban plan (PLU) or the urban planning code.
The case law of the Council of State confirms this dissociation: the rules of addressing and the rules of urban planning operate independently. In other words, the town hall can assign you a number without validating your installation.
What the address does not change
With a postal address, you can receive mail and packages. You can also use it for certain administrative procedures.
However, this address does not constitute legal domiciliation if the plot is not recognized as a place of residence by the municipality. To establish your tax residence or register on the electoral rolls at this address, the occupation of the land must be regular. A plot classified as zone N or A in the PLU generally does not allow for permanent residence.
Non-buildable land and mailbox: common mistakes
Installing a standardized mailbox at the edge of the road without municipal validation is the first mistake. The mailman may refuse to deliver mail if the address does not exist in La Poste’s reference database.
The second trap: confusing postal address with primary residence. Some owners think that by obtaining a number, they can declare the plot as their residence. The postal number does not grant the right to inhabit a non-buildable plot.
The third mistake: neglecting the timelines. In a municipality that has not yet finalized its addressing plan, the process can take several months. It is better to contact the town hall before purchasing the plot to know the status of the naming of roads in the relevant area.
When the town hall refuses
A refusal of addressing is rare but possible. The town hall may determine that the plot is not served by a road accessible to delivery vehicles, or that assigning a number would create ambiguity about the nature of the occupation. In this case, request a written response with justification. This document will allow you, if necessary, to contact the postal mediator or to resubmit the request after regularizing access.
Obtaining an address on a non-buildable leisure plot always goes through the municipality and the National Address Database. The mailbox comes after, not before. And in all cases, this address does not turn a leisure plot into a habitable plot: the two subjects fall under separate regulations that must be addressed with the appropriate administration.
