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gateBBodSchG — Contaminated Site Liability Transfer Gate
// IMMO.QUICK · GATEBBODSCHG · § 3/13/4 BBODSCHG · BBODSCHV § 12

No ownership transfer, without proof of remediation.

gateBBodSchG forensically seals that an ownership transfer of a contaminated site passes six clusters, contamination register, remediation plan, liability transfer, soil values, geo-data consistency, and financing risk, before the notarial deed is executed at T=0. Support for banks and property funds, never a replacement for the soil-protection authority's own decision.

Request Access → See the architecture
In one sentence: gateBBodSchG blocks the notarial deed for a contaminated site as long as the remediation plan or liability transfer is not documented.
✓ RELEVANT IF...
  • You are a bank, property fund, or developer financing or acquiring contaminated sites
  • You need to prove liability transfer and remediation evidence before the notarial deed
✕ NOT RELEVANT IF...
  • You expect the soil-protection authority to automatically recognise the result as an exemption order
  • No contaminated site or soil-protection-relevant ownership transfer is involved
// The problem

Contaminated-site liability otherwise transfers through a mere land-registry entry, unnoticed.

§4 BBodSchG lets polluter liability pass on with an ownership change, often without the acquirer noticing. gateBBodSchG checks the contamination register, remediation plan, and threshold values before the notarial deed is executed.

EUDR geo-data linkage as the sixth cluster
Contaminated sites and deforestation questions sometimes concern the same geo-coordinates. The gate checks consistency with the EUDR geo-data review.
// Architecture

6 clusters, checked sequentially.

Every cluster is dispositive (material_block_mode: true), a hit blocks bindingly, not merely for documentation.

CLUSTER 1
Contamination Register
Checks whether the site is recorded in the contamination register under §3 BBodSchG.
altlast_hash · kataster_confirmed
CLUSTER 2
Remediation Plan
Checks the plan, implementation, and regulatory oversight of remediation under §13 BBodSchG.
sanierungsplan_hash
CLUSTER 3
Liability Transfer
Checks the legally secure transfer of liability under §4 BBodSchG before the ownership change.
liability_attestation_hash
CLUSTER 4
Soil Values & Thresholds
Checks contaminant concentrations (lead, cadmium, mercury) against the threshold values under BBodSchV §12.
bbodschv_pruefwert_hash
CLUSTER 5
Geo-Data & Consistency
Checks consistency of the site's geo-data with the register and the EUDR linkage under Art. 9.
eudr_consistency_hash
CLUSTER 6
Financing & Risk Transfer
Checks the contractual and financial security of the contamination risk in the property financing.
immo_loan_risk_hash
No case, no doubt
Every cluster returns its own sealed result. A single hit in an active cluster is enough to block the overall action.
// Test results

Two tested scenarios.

All values on this page are fictional test data and serve only to illustrate the gate logic.

Scenario C1C2C3C4C5C6 Verdict Latency
Industrial brownfield, register checked, remediation plan in place, liability transferred, thresholds metPASSPASSPASSPASSPASSPASSBBODSCHG_SEALED467ms
Site purchase without a documented remediation planPASSFAILnot evaluatednot evaluatednot evaluatednot evaluatedBLOCK_BS2_NO_SANIERUNGSPLAN412ms
Cryptographic chain continuation
Every test produces a deterministic receipt_id, an input_snapshot_hash, an HMAC-SHA256 signature, and a merkle_link to the previous receipt. Persistence occurs in the gateBBodSchGReceipt entity with a 10-year retention period.
// Clarification

What gateBBodSchG is not.

  • Not automatic recognition by the soil-protection authority. The gate delivers a cryptographic proof, not an exemption order.
  • Not a replacement for a soil-protection expert assessment. The gate seals the documentary check, it does not replace an on-site investigation.

For banks and property funds that want to make contaminated-site liability transfer provable.

Request Access → access@immoquick.eu
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