Land Agent in Oxford: Understanding Biodiversity Net Gain

Oxford and the surrounding areas are characterised by a diverse and distinctive landscape. This varied setting offers real scope to use land in ways that are both financially sustainable and environmentally responsible.

At the same time, planning and environmental regulation continue to develop. Biodiversity net gain (BNG), introduced under the Environment Act 2021, is now a key consideration in land management and development projects across England. Securing early ecological input and specialist advice is increasingly important for those managing rural land in Oxford.

At Collington Winter Environmental, we advise landowners and developers across the region with clear ecological guidance. Our approach is centred on helping clients make well-informed decisions that balance long-term commercial objectives with regulatory compliance and responsible land stewardship.

Biodiversity Net Gain (BNG) requires most new developments to deliver at least a 10% measurable increase in biodiversity compared with a site’s pre-development baseline. Where that uplift cannot be achieved within the red line boundary, developers must secure biodiversity units from off-site land.

For landowners across Oxford and the surrounding areas, this presents a meaningful opportunity. Land that may be less productive agriculturally, susceptible to flooding, or otherwise challenging to farm can often be suitable for habitat creation. With sustained development pressure across both urban and rural areas, demand for off-site biodiversity units is expected to remain strong.

BNG can offer a stable, long-term income stream while delivering measurable environmental enhancement. However, it requires careful planning, appropriate legal agreements and a commitment to manage the land for a minimum of 30 years.

Biodiversity Net Gain (BNG) requires new developments to improve biodiversity by at least 10%, measured using DEFRA’s Biodiversity Metric. If this can’t be achieved on-site, developers must buy biodiversity units elsewhere.

For landowners, this is an opportunity. Land that is less productive for farming can be used for habitat creation. With ongoing development in Warwickshire, demand for off-site biodiversity units is strong. BNG projects can provide a reliable, long-term income.

A habitat bank is land managed specifically to create or enhance wildlife habitats for at least 30 years. Using DEFRA’s Biodiversity Metric, habitat improvements are assessed and translated into biodiversity units that can be sold to developers.

In and around Oxford, habitat banks may involve grassland restoration, wetland creation along river corridors, woodland planting or enhanced field margins. With a clear strategy, habitat banking can complement existing land uses while delivering long-term financial and environmental benefits.

Is BNG suitable for all farmland?

Not all land will be appropriate, but many rural land types can support habitat creation. A professional ecological assessment can determine whether BNG is a viable option.

How long must land be committed?

Most BNG agreements require land to be managed for at least 30 years. This long-term commitment should be carefully considered within any wider farm or estate strategy.

Can BNG operate alongside farming?

In some circumstances, yes. Compatibility depends on the habitat type and its management requirements and should be assessed on a site-specific basis.

You can find more FAQs regarding biodiversity net gain here.

Collington Winter Environmental delivers specialist, ecology-led services across Oxford and the surrounding areas. We identify suitable land, evaluate biodiversity potential, advise on habitat bank creation and support BNG projects from initial feasibility through to implementation and long-term management.

To speak with a land agent in Oxford and get expert advice, please contact Collington Winter Environmental at info@collingtonwinter.co.uk or call 01204 939608.