Salisbury · Chippenham · Swindon

Off-Site BNG Units in Wiltshire

The Ferals supplies off-site Biodiversity Net Gain units to developments across Wiltshire — and south Wiltshire shares our Cranborne Chase National Character Area, keeping spatial risk low.

A Shared Landscape with South Wiltshire

The Ferals lies within the Cranborne Chase National Character Area (NCA 134), which extends north across the Dorset border into south Wiltshire. Developments around Salisbury, Tisbury, Mere and the southern Wiltshire downs often share this landscape character — an advantage under the BNG spatial risk framework, since units delivered in the same National Character Area as the development carry no spatial risk penalty.

As a registered biodiversity gain site on the Natural England register (reference BGS-180925001), we provide fully compliant off-site units backed by a 30-year Section 106 agreement. Units are available now.

Wiltshire Developments We Supply

Shared NCA Possible

South Wiltshire

Salisbury, Tisbury, Mere and the southern downs may share the Cranborne Chase NCA with The Ferals — potentially no spatial risk penalty. We confirm from your metric.

Standard Risk

West Wiltshire

Warminster, Westbury and Trowbridge area. Standard spatial risk multiplier applies for developments outside the shared NCA.

Standard Risk

Chippenham & North Wiltshire

Chippenham, Calne and Melksham. Neighbouring county supply with standard spatial risk multiplier applied.

Standard Risk

Swindon

Swindon Borough developments. Available subject to spatial risk assessment for your site.

Spatial Risk and Wiltshire

Under the statutory biodiversity metric, off-site units delivered in the same National Character Area or Local Planning Authority as the development carry no spatial risk multiplier; units in a neighbouring area carry a 0.75 multiplier; and units elsewhere in England carry a 0.5 multiplier. Because the Cranborne Chase NCA straddles the Dorset–Wiltshire border, some south Wiltshire developments can source units from The Ferals with no penalty at all. Send us your metric and we will confirm which multiplier applies to your site.

Why Off-Site BNG?

Not every development can deliver its full 10% biodiversity net gain on site. Common reasons developers need off-site BNG units include:

Available Unit Types

The Ferals currently offers four habitat unit types, all verified under the statutory Biodiversity Metric:

For full details on our available units and how to purchase, see our BNG units for sale page. For pricing information, see our BNG unit cost guide.

Frequently Asked Questions

Can I buy Dorset BNG units for a Wiltshire development?

Yes. The Ferals supplies off-site BNG units to developments across Wiltshire. South Wiltshire developments around Salisbury may share the Cranborne Chase National Character Area with our habitat bank, which can mean no spatial risk penalty. For north Wiltshire, such as Chippenham and Swindon, a standard neighbouring-area multiplier applies.

Does south Wiltshire share a National Character Area with The Ferals?

Yes, potentially. The Ferals sits within the Cranborne Chase National Character Area (NCA 134), which extends north into south Wiltshire around Salisbury, Tisbury and Mere. Developments within the same NCA carry no spatial risk penalty. We confirm this from your development's biodiversity metric.

What is the spatial risk multiplier for a Wiltshire development?

It depends on location. Units delivered in the same NCA or authority as the development carry no multiplier; neighbouring areas carry a 0.75 multiplier; elsewhere in England carries a 0.5 multiplier. Some south Wiltshire sites qualify for no penalty via the shared Cranborne Chase NCA. We calculate the exact figure for each development.

Are BNG units available now for Wiltshire schemes?

Yes. Units at The Ferals are available now and can typically be allocated within weeks of agreement. Send us your Biodiversity Metric for a firm quote.

Areas We Serve

The Ferals supplies off-site BNG units to developments across Dorset and neighbouring counties. Explore our area guides:

Dorset BCP (Bournemouth, Christchurch & Poole) Hampshire Somerset

Buy off-site BNG units for your Wiltshire development

Send us your Biodiversity Metric and development location. We will confirm availability, spatial risk and pricing.

Get a quote