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Saint-Sébastien-sur-Loire cadastre

Loire-Atlantique (44)

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Parcels
10,702
Cadastral sections
40
Recorded area (contenance)
902.7 ha
Commune code (INSEE)
44190

Sections

Planning

Planning document
Intermunicipal zoning plan (PLUi) (244400404_PLUI_20260518)

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”.

Cover more than 90% of the parcels: Parking.

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

Social housing quota sector
9,514 parcels
Building restricted (environment, risks, public interest)
2,269 parcels
Height
888 parcels
Classified woodland (EBC)
879 parcels
Protected built or landscape heritage
874 parcels
Development guidelines (OAP)
584 parcels
Retail diversity to protect or develop
435 parcels
Building placement rules
259 parcels
Reserved site
128 parcels
Ecological corridor (green and blue network)
80 parcels
Road, path or public transport to keep or create
9 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”.

Cover more than 90% of the parcels: Sanitation and waste and Local advertising rules.

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

Transport noise sector
2,798 parcels
Planning decision deferral area
1,064 parcels
Other information
321 parcels
Development tax sector
156 parcels
Energy-saving priority area
51 parcels
Soil information sector (pollution)
20 parcels
Urban pre-emption right
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:

Power lines
832 parcels
Railways
391 parcels
Listed monument and its surroundings
165 parcels
Towpath
47 parcels

Addresses

8,816 addresses on 400 streets, from the Base Adresse Nationale (national address register). Each number links to its parcel when it is known.

See the 8,816 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 3 (moderate)
Radon potential
Category 2 (low, with geological factors that can ease the transfer of radon)
Clay shrink-swell
19% of the parcels' area with medium exposure, 78% low
Risk prevention plan
Natural or mining risk plan (PM1): 313 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)