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Montesson cadastre

Yvelines (78)

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Parcels
7,860
Cadastral sections
24
Recorded area (contenance)
652 ha
Commune code (INSEE)
78418

Sections

Planning

Planning document
Local zoning plan (PLU) (78418_PLU_20251120)

PLU zones (share of parcel area):

Zoning plan statistics: prescriptions, information areas and easements

Local plan prescriptions

For guidance only, from the Géoportail de l'Urbanisme extraction of 15 August 2026; the linked document may have been replaced since. Only the planning document's regulations and annexes are binding. A missing item means “not recorded”, not “no constraint”.

Parcels of the commune concerned, according to the Géoportail de l'Urbanisme:

Development guidelines (OAP)
1,104 parcels
Protected built or landscape heritage
597 parcels
Building placement rules
393 parcels
Reserved site
87 parcels
Retail diversity to protect or develop
12 parcels
Classified woodland (EBC)
9 parcels
External appearance
5 parcels
Other prescription
4 parcels

Local plan information

For guidance only, from the Géoportail de l'Urbanisme extraction of 15 August 2026; the linked document may have been replaced since. Only the planning document's regulations and annexes are binding. A missing item means “not recorded”, not “no constraint”.

Parcels of the commune concerned, according to the Géoportail de l'Urbanisme:

Other information
4,782 parcels
Urban pre-emption right
4,674 parcels
Local advertising rules
4,585 parcels
Transport noise sector
3,922 parcels
Commercial pre-emption right
2,513 parcels
Peri-urban farmland protection
2,037 parcels
Sensitive natural area pre-emption zone
1,979 parcels
Planning decision deferral area
1,239 parcels
Deferred development zone (ZAD)
439 parcels
Partnership urban project (PUP)
92 parcels
Soil information sector (pollution)
12 parcels
Lead exposure risk area
8 parcels
Archaeological site
2 parcels

Public-utility easements

For guidance only, from the Géoportail de l'Urbanisme extraction of 15 August 2026; the linked document may have been replaced since. Only the planning document's regulations and annexes are binding. A missing item means “not recorded”, not “no constraint”.

Parcels of the commune concerned, according to the Géoportail de l'Urbanisme:

Protected farmland
1,865 parcels
Power lines
203 parcels
Listed monument and its surroundings
141 parcels
Towpath
21 parcels

Addresses

3,848 addresses on 174 streets, from the Base Adresse Nationale (national address register). Each number links to its parcel when it is known.

See the 3,848 addresses

Risks

This information is for guidance only and has no regulatory force: it does not replace the risk statement (état des risques, ERRIAL) to be attached to a sale or a rental, which anyone can produce free of charge on Géorisques.

Seismic zone
Zone 1 (very low)
Radon potential
Category 1 (low)
Clay shrink-swell
4% of the parcels' area with high exposure, 17% medium, 20% low
Risk prevention plan
Natural or mining risk plan (PM1): 1,812 parcels within a perimeter recorded in the Géoportail de l'Urbanisme

Produce the risk statement (ERRIAL) on GéorisquesRisks near an address (Géorisques)

Property prices

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The cadastre is a tax record: it does not prove ownership. Why?

The cadastre is a tax record: it does not prove ownership and its boundaries have no legal force (only a surveyor's boundary marking does). Its plan is approximate: especially where it is old, it can be offset by a few metres from the buildings and the aerial imagery. The owner's name is not shown. Boundary marking (Service Public, in French)