86 bis Route des Roches Blanches, 29100 Douarnenez
Parcel of 276 m² (recorded area) with 2 buildings (agricultural), built 1900 or earlier. Planning document zoning: agricultural zone (A).
- Recorded area
- 276 m²
- Planning zone
- AAgricultural zone (A)
Address from France’s national address register (BAN), associated with this parcel for information only. Addresses and how they are linked
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)
At a glance
- Computed area
- 281 m²from the cadastral plan
- Perimeter
- 78 mcomputed from the cadastral plan
- Buildings
- 2 buildingsAgricultural
- Built
- 1900 or earlier
- Height to the eaves
- up to 4.1 m
- Dwellings
- 1
- Addresses
- 1 linked address
- Clay soils
- Not recorded
- Risk prevention plans
- Not recorded
This parcel’s figures, from the cadastre, the national address base (BAN), IGN’s BD TOPO and the risk databases. Missing data is not shown.
What this means for a project
- Zone A: apart from farm buildings, usually only a measured extension and outbuildings of an existing home are allowed, and only where the rules provide for them. Guide: Turn the map finding into a specific question
- 2 prescriptions, information areas or easements touch the parcel (details below): they apply on top of the zone’s rules. Guide: Read the documents, not just the colour
- Radon potential category 3: it appears in the information given to buyers and tenants; ventilating and, during works, sealing between the ground and the building reduce exposure. Guide: Prepare the formal risk statement
Points drawn from this parcel’s data. They tell you which questions to ask; they do not replace a certificat d’urbanisme or the official statement of risks.
Understanding the map information
- French planning: who decides what
- The public data behind the map
- Reading and finding a cadastral reference
- Cadastre and boundary surveys: where does the land end?
- Reading a PLU: a zone label does not define a project
- Recorded and calculated parcel area: why two figures?
- Addresses and parcels: why they do not always match
- Parcel owners: what the map does not show and where to ask
- Dividing a plot: preparing a land division
- Property risks: from a map finding to a proper check
Planning zoning
A – Agricultural zone (A)
Protected farmland: building is strictly limited.
100% of the parcel
Document: 29046_PLU_20260219
Addresses
Source: Base Adresse Nationale (national address register). “Linked by its position”: the address point lies inside the parcel. “Linked by its building (RNB)”: the building that carries the address in the national building register (Référentiel National des Bâtiments) stands on the parcel. “Linked by IGN (BAN PLUS)”: IGN matches the address to this parcel, the nearest one on the same side of the street, and the address point lies inside it. In these cases the Base Adresse Nationale declares no link.
- 86 bis Route des Roches Blanches, 29100 Douarnenez (linked by its building (RNB))
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”.
Not recorded in the Géoportail de l'Urbanisme
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”.
- Heritage exclusion of renewable materials
- Limite des espaces proches du rivages (Loi Littoral) – 100% of the parcel
See the document on the Géoportail de l'Urbanisme
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”.
- Remarkable heritage site
- Site patrimonial remarquable de DOUARNENEZ – 100% of the parcel
See the document on the Géoportail de l'Urbanisme
Buildings
Indicative data (IGN BD TOPO): buildings IGN links to the parcel (BAN PLUS) when they cover at least 20 m² of it, with information from the tax files (DGFiP), anonymised. An unknown height or number is not shown. Construction years are grouped into periods, because old buildings often carry an estimated round year (1800, 1900…). A building standing on several parcels is counted on each, with all its dwellings. Recent buildings may be missing: the tax files are updated with a delay.
- On the parcel
- 2 buildings
- Use
- Agricultural
- Height to the eaves
- up to 4.1 m
- Storeys
- up to 2 (ground floor included)
- Dwellings
- 1
- Built
- 1900 or earlier
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.
Some clay soils swell when wet and shrink as they dry, which can crack buildings. The higher the exposure, the more building precautions are needed. A risk prevention plan (PPR) maps the areas exposed to a hazard (flooding, ground movement, an industrial site…) and sets building rules there. The Géoportail de l'Urbanisme does not list every plan yet.
- Clay shrink-swell
- Not recorded
- Risk prevention plan
- Not recorded in the Géoportail de l'Urbanisme
- Seismic zone
- Zone 2 (low)
- Radon potential
- Category 3 (significant)
Produce the risk statement (ERRIAL) on GéorisquesRisks near an address (Géorisques)
The parcel in its section
- By recorded area, larger than 9% of the 116 parcels of section CE whose area is recorded.
- Median recorded area in the section: 1,380 m².
- 13 of the section’s 116 parcels have a linked building, 14 an address.
- Douarnenez has 12,042 parcels; this one holds less than 0.01% of their total recorded area.
Details
- Cadastral reference
- 29046 000 CE 77 (29046000CE0077)
- Commune
- Douarnenez (29046)
- Prefix
- 000
- Section
- CE
- Number
- 77
- Recorded area (contenance)
- 276 m²
- Computed area
- 281 m² Computed from the plan, may differ from the recorded area.
Planning in this commune
- Planning document
- Local zoning plan (PLU) (29046_PLU_20260219)
Find the applicable document on the official GPU map
Document identified in the data, without assurance that it covers the whole commune or every parcel. Several documents may apply. Check coverage and the current version with the town hall or GPU. 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”.
Planning zones (share of parcel area):
- Agricultural zone (A) (46%)
- Natural and forest zone (N) (32%)
- Urban zone (U) (20%)
- Development zone (AUc) (2%)
Source datasets used on this page: 8. Their dates and reuse terms can differ.
Sources and versions used on this page
- Plan cadastral informatisé (Etalab)
2026-06-01— Licence Ouverte / Open Licence 2.0Cadastre Etalab redistributes the French digital cadastral plan in simplified geographic formats, including parcels, sections and buildings. Mapped boundaries do not replace a boundary survey.
- Géoportail de l’Urbanisme — extraction nationale
2026-08-15— Licence Ouverte / Open Licence 2.0The national Urban Planning Geoportal extraction brings together layers published by the GPU from documents supplied by municipalities, intermunicipal authorities and state services. The competent authorities remain responsible for the documents and their regulatory meaning.
- Base Adresse Nationale (listes d’adresses et géocodage Géoplateforme)
2026-10-07— Licence Ouverte / Open Licence 2.0The Base Adresse Nationale brings together French addresses, including those published by municipalities. Address coordinates alone do not establish an administrative link to a cadastral parcel.
- BAN PLUS (rattachement géométrique adresse → parcelle)
2026-06-15— Licence Ouverte / Open Licence 2.0BAN PLUS is IGN’s product linking Base Adresse Nationale addresses to reference geographic objects, including cadastral parcels, using geometric matching.
- Exposition au retrait-gonflement des argiles
2026-07-02— Licence Ouverte / Open Licence 2.0The clay shrink-swell exposure map describes geological exposure at the map’s scale. It does not replace a site-specific geotechnical investigation.
- Zonage sismique de la France (décret n° 2010-1255), liste version janvier 2015
2018-07-30— Licence Ouverte / Open Licence 1.0This vector layer published by wpd is based on the BRGM / planseisme.fr list of municipalities and seismic zones, January 2015 version. Municipal zoning does not measure the structural risk of an individual building.
- Potentiel radon des communes (arrêté du 27 juin 2018)
2019-05-06— Licence Ouverte / Open Licence 1.0Radon potential zoning classifies municipalities according to their geological potential to emit radon. It does not measure the indoor radon concentration of an individual building.
- BD TOPO® – bâtiments (usage, hauteur, niveaux, logements, année de construction)
2026-06-15— Licence Ouverte / Open Licence 2.0BD TOPO is IGN’s vector topographic reference dataset. Its building component describes footprints and available attributes such as use, height and selected construction information.
Neighbouring parcels
- 29046 000 CE 74
- 29046 000 CE 75
- 29046 000 CE 76 – 86 Route des Roches Blanches, 29100 Douarnenez
- 29046 000 CE 78 – 86 Leydé, 29100 Douarnenez
- 29046 000 CE 124 – 88 Leydé, 29100 Douarnenez
Previous parcel: 29046 000 CE 76 – 86 Route des Roches Blanches, 29100 DouarnenezNext parcel: 29046 000 CE 78 – 86 Leydé, 29100 Douarnenez