Industrial sites and pollution: check the environment before you buy

Buying near an active or former industrial site means exposure to health risks, planning servitudes and a resale discount. All of it is public and verifiable in minutes.

BASIAS / BASOL / ICPEGéorisques sourcePlanning servitudesBuyer-side
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Understanding industrial sites

Three national registers list industrial sites: ICPE (active classified installations), BASIAS (former industrial sites), BASOL (known polluted sites needing action). All public, all accessible via Géorisques.

A nearby active ICPE can generate noise, odours, servitudes (PPRT for SEVESO sites), even construction restrictions. A former BASIAS site on the plot may have left residual soil pollution.

Official databases

France's Ministry for Ecological Transition and BRGM manage BASIAS and BASOL. ICPEs are declared at the prefecture and publicly searchable.

BienCheck crosses these databases with your geocoded address to identify sites within a relevant radius (typically 500m) and their status.

Why industrial proximity matters

When buying

Industrial proximity changes your top price, your upfront costs and the documents you should demand before signing the preliminary contract.

When selling

Ignoring industrial proximity drags out the sale, exposes you to hidden-defect lawsuits and hands buyers an obvious lever to knock the price down.

For rental investment

Industrial proximity eats into net yield, raises vacancy, and hurts resale. A poorly-rated or exposed asset becomes a 10-year drag.

On financing

Lenders tighten terms on risky or energy-inefficient homes. Get a pre-agreement before you spend on diagnostics or notary fees.

On insurance

Industrial proximity translates into higher excess, surcharges or flat-out refusal. Get a written quote before you sign, not after.

On works

Get quotes and check grants (MaPrimeRénov', zero-rate eco-loan) ahead of time. An ill-scoped job easily costs twice the first estimate.

On resale

The market increasingly sorts homes by quality. Industrial proximity drags resale price down and stretches time-on-market.

The BienCheck approach

We identify BASIAS and BASOL sites on the plot and within 500m, active ICPEs within 1km, and any PPRT (SEVESO sites). We specify the activity and status (active, closed, decontaminated).

The goal isn't to disqualify the property but to quantify what it implies: pollution diagnostic, servitudes, resale value, daily quality of life.

Common mistakes

  • Thinking a closed site isn't a risk
    An old BASIAS petrol station can leave hydrocarbons in the soil decades after closing.
  • Forgetting PPRT
    SEVESO sites trigger a PPRT that can ban or constrain construction across several kilometres.
  • Mixing nuisance with pollution
    Noise and odours are nuisances, soil pollution is a separate health risk. Both matter.
  • Trusting the land registry alone
    The land registry won't tell you what stood on the plot. BASIAS and BASOL will.
  • Underestimating drinking-water impact
    A nearby industrial or large agricultural site can affect well or borehole water quality.
  • Buying without asking plot history
    The seller must disclose any known polluting activity. Press them.

Smart moves

  • Check BASIAS / BASOL before the viewing
    Free access on Géorisques. One minute to know if the plot has an industrial past.
  • Identify ICPEs within 1km
    Listed on the ministry's classified-installations site.
  • Get a pollution diagnostic on BASIAS plots
    On a referenced plot, an environmental diagnostic (€1,500 to €3,000) clarifies the picture.
  • Check PLU servitudes
    The local urban plan flags PPRT or protection-perimeter zones.
  • Test well or borehole water
    Off-grid water? A lab test (€80 to €150) before purchase is prudent.
  • Include a pollution condition precedent
    On high-risk properties, negotiate the offer subject to a favourable environmental diagnostic.

Common buyer questions

How do I know if the plot hosted polluting activity?

Search BASIAS on Géorisques. It's the national historical inventory.

Does a BASIAS site forbid purchase?

No, but an environmental diagnostic is strongly recommended to verify soil state.

What recourse if pollution surfaces after purchase?

Hidden-defect claim against the seller, action against the historical operator, sometimes public funds as a last resort.

Can a PPRT block works?

Yes, by forbidding extensions, height increases or some uses (public-access buildings).

Impact on insurance?

Soil pollution can lead to coverage exclusions or surcharges.

Common investor questions

Should I avoid industrial zones?

Not systematically. Reconversion areas offer upside but demand serious environmental due diligence.

Does pollution hurt rental yield?

Indirectly: lower appeal, higher vacancy, weaker long-term valuation.

Which extra insurance to add?

An accidental-pollution guarantee, sometimes available via specialist brokers.

Are pollution diagnostics deductible?

Yes for rental properties, like other acquisition or improvement costs.

How do I assess a regenerating neighbourhood's value?

Study development plans, recent PLUs, DVF sales over 5 years.

Common owner questions

Must I disclose my plot's industrial past?

Yes. The duty of honesty in a sale covers any known relevant element.

Does insurance cover later-discovered pollution?

Usually not. Dedicated pollution insurance is required.

How do you decontaminate polluted land?

Excavation, biological treatment, confinement: depends on the pollutant. Costs vary widely, sometimes state-supported under conditions.

Does decontaminated land recover value?

Partly. Clear traceability and final certificates support resale value.

How do I report suspected pollution?

Town hall, ARS, DREAL. A report can trigger a public investigation.

Industrial sites glossary

ICPE
Classified environmental site. Industrial installation subject to authorisation or declaration (quarries, factories, large farms).
PPR
Local risk prevention plan. Planning document mapping zones exposed to a natural or technological hazard and the building rules that apply.
PLU (zoning)
Local urban plan. The town-hall document defining what can be built on each plot and the easements that apply.

Industrial sites by territory

Industrial environment varies sharply between towns. Browse the most consulted territories.

Check the industrial environment for your future home

ICPE, BASIAS, BASOL, PPRT: everything you need at your address, inside the BienCheck report.

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