Statutory Diligence GuideUpdated October 2026Follow on Google★

How to Buy Off-Site BNG Units and Statutory Credits in the UK

Statutory Source: Natural England Biodiversity Gain Site Register & Defra Guidance

Quick Answer: How to Buy Off-Site BNG Units and Statutory Credits in the UK

To buy off-site BNG units in England: (1) Confirm your exact unit deficit using the Statutory Biodiversity Metric, (2) Search Natural England's Biodiversity Gain Site Register or private environmental brokers to find an accredited habitat bank within your local planning authority or National Character Area, (3) Enter into a formal BNG Unit Purchase Agreement with the landowner/broker (£20,000–£40,000 per unit), (4) Obtain a formal Certificate of Unit Allocation referencing the registered gain site ID, and (5) Submit the certificate and Biodiversity Gain Plan to your council. Only if no local private units exist can you apply to Natural England to buy statutory credits.

Want to check your exact property or address?Check Your Postcode Now

Check Your Property on the Biodiversity Net Gain Calculator (BNG)

Enter any UK house number & postcode to run an instant statutory lookup:

Quick postcodes:

The 5-Step Process to Procuring Off-Site BNG Units

Step 1: Quantify the Deficit: Run your baseline and proposed layout through the Statutory Metric to determine exact habitat, hedgerow, or watercourse unit shortfalls.

Step 2: Source Local Habitat Banks: Check Natural England's public register. Sourcing units within your LPA avoids the 0.75 or 0.5 spatial penalty multiplier that inflates required units.

Step 3: Legal Due Diligence: Verify that the habitat bank has an executed Section 106 or Conservation Covenant and a fully funded 30-year habitat management plan.

Step 4: Execute Purchase & Allocation: Pay the unit supplier and receive an official Allocation Reference Number linked to your planning reference.

Step 5: Discharge Planning Condition: Submit the BNG Plan and evidence of allocation to the council to discharge the statutory pre-commencement condition.

Spatial Multiplier Penalties for Off-Site Unit Location
Off-Site Habitat Bank LocationSpatial MultiplierDeficit Units NeededUnits Required to Purchase
Same LPA or National Character Area (NCA)1.0 (No penalty)5.0 units5.0 units
Neighbouring LPA or Neighbouring NCA0.75 (25% penalty)5.0 units6.67 units
Anywhere else in England0.50 (50% penalty)5.0 units10.0 units

Follow Property Due Diligence on Google

Official Feed

Add our domain as a preferred source to receive priority property law guides, Land Registry data releases, and statutory alerts directly in your Google app & Discover feed.

100% Free Baseline Report • No Sign-Up or Password Required
Instant 3-Second Statutory Screening

Check Any Property Across 12 Official Statutory Registers

Conducting property due diligence requires cross-referencing multiple public registries. Run a free instant desktop screening across Environment Agency flood models, British Geological Survey subsidence data, UKHSA radon maps, HM Land Registry sold prices, and local planning constraints.

Environment Agency FloodingSurface water, rivers & sea risk bands
BGS Ground StabilityShrink-swell clay & subsidence risk
UKHSA Radon Gas PotentialOfficial radon class & protection rules
HM Land Registry PricesHistorical transactions & tenure type
EPC Energy & RdSAP SpecsOfficial construction era & wall fabric
Planning Applications BufferRecent nearby planning notices (500m)
✓ Zero payment details required✓ Instant automated browser report✓ Direct links to official statutory sources
UK Statutory Due Diligence Silo

Official Primary Verification Registers

Cross-reference property diligence across verified UK government open registers under the Open Government Licence v3.0:

Category: Biodiversity Net Gain & Planning Law
Need all 7 statutory checks compiled for a specific property? Run a Free Baseline Due Diligence Report:
Run Combined Search
Free Statutory Diligence

Inspect Any UK Property on Our Biodiversity Net Gain Calculator (BNG)

Run an instant preliminary screening across official government databases including the MHCLG EPC register, HM Land Registry, and Environment Agency records.

Launch Biodiversity Net Gain Calculator (BNG)

Official Statutory Notice & Guidance:

This guide is compiled for informational due diligence referencing official statutory records from Natural England Biodiversity Gain Site Register & Defra Guidance under the Open Government Licence v3.0. Legal titles and physical structural condition should always be independently inspected by a qualified conveyancing solicitor and chartered RICS surveyor prior to legally binding property commitments.