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Thoiry cadastre

Yvelines (78)

Parcels
1,275
Cadastral sections
13
Recorded area (contenance)
699.9 ha
Commune code (INSEE)
78616

Sections

Planning

Planning document
Local zoning plan (PLU) (78616_PLU_20250128)

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:

Protected built or landscape heritage
917 parcels
Classified woodland (EBC)
75 parcels
Reserved site
70 parcels
Remarkable coastal area
57 parcels
Buildings in a farm or natural zone
37 parcels
Development guidelines (OAP)
28 parcels
Building restricted (environment, risks, public interest)
20 parcels
Retail diversity to protect or develop
12 parcels
Rebuilding or demolition rules
1 parcel

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:

Road setback strip
390 parcels
Archaeological site
162 parcels
Urban pre-emption right
1 parcel

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”.

Cover more than 90% of the parcels: Underground gas or fuel storage.

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

Listed monument and its surroundings
806 parcels
Listed or classified site
102 parcels
Power lines
16 parcels

Addresses

581 addresses on 44 streets, from the Base Adresse Nationale (national address register). Each number links to its parcel when it is known.

See the 581 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
25% of the parcels' area with high exposure, 61% medium
Risk prevention plan
  • Natural or mining risk plan (PM1): 2 parcels within a perimeter recorded in the Géoportail de l'Urbanisme
  • Technological risk plan (PM3): 1 parcel within a perimeter recorded in the Géoportail de l'Urbanisme

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)