Secure your Paris files against former-quarry risk
Instant pre-assessment of former quarries and Antediluvian gypsum at any address across Paris + Petite Couronne. Dedicated solutions for notaries (French notaires), estate agents, block managing agents, property surveyors and underpinning contractors.
Choose your profession
⚖️ Notaries & notarial offices
Strengthen your duty to advise and prevent latent-defect litigation (art. 1641 of the French Civil Code). Time-stamped report, ready to file with the sale record.
- Discovery Pack: 10 reports / 49 €
- Practice Pack: 20 reports / 79 €
- Unlimited subscription: 59 €/month
🏠 Estate agents
Make your valuations more reliable, protect your mandates and cut the rate of cancelled preliminary sale agreements. Documented duty to advise (Hoguet Act).
- Discovery Pack: 10 reports / 49 €
- Agency Pack: 20 reports / 79 €
- Unlimited subscription: 59 €/month
🏢 Block managing agents
Map the risk across your building portfolio, prepare your general meetings and get ahead of suspicious cracks.
- Discovery Pack: 10 reports / 49 €
- Firm Pack: 20 reports / 79 €
- Unlimited subscription: 59 €/month
📋 Property surveyors
Add the former-quarry module to your Paris DDT survey pack. Attractive margin, strong differentiation, API available.
- Discovery Pack: 10 reports / 49 €
- Firm Pack: 20 reports / 79 €
- Unlimited subscription: 59 €/month
🏗️ Construction & civil engineering firms
Receive qualified leads from Paris owners actively working to make their property safe. Underpinning, grout injection, micropiles.
- Starter: 10 leads / 159 €
- Pro: 50 leads / 639 €
- Premium: 200 leads / 1999 €
Why Paris professionals choose Sous-sol Paris
⚡ Instant
30 seconds per report, against 30 days for an official enquiry with the IGC (Paris quarry inspectorate). CSV import of up to 500 addresses.
📚 Reliable sources
Cross-referenced public data from the IGC, BRGM/Géorisques, the City of Paris and Institut Paris Région. Open documentation, sources cited.
💼 100% professional
VAT invoice, team access, full history, dedicated dashboard, priority support.
How it works during the demo phase
Choose your profession above, explore the offer in detail, then leave us your details on the relevant page. We are opening access gradually to the first practices and companies — no commitment and no payment for now.