# Biofarm > Biofarm creates and manages habitat banks across England, generating off site biodiversity units that help developers meet mandatory Biodiversity Net Gain (BNG) requirements. Unlike brokers, Biofarm creates its own habitats and manages every habitat bank for at least 30 years — every biodiversity unit it supplies comes from a place Biofarm restores and stewards itself. Key facts: - Biodiversity Net Gain is mandatory for most qualifying developments in England: at least a 10% measurable increase in biodiversity, calculated with the statutory biodiversity metric and secured for at least 30 years. - A biodiversity unit is the measure of biodiversity value created through habitat creation or enhancement; developers buy off site units when they cannot deliver all of their BNG on site. - The statutory metric's Spatial Risk Multiplier means units delivered closer to a development carry more value — location matters when choosing a habitat bank. - Biofarm operates a growing national network of habitat banks, including five registered banks; the flagship is Sleight Farm in Bath & North East Somerset (70 hectares, 374 biodiversity units). - Biofarm works with developers, landowners and corporate partners; clients include Hayfield Homes, Wavensmere Homes, Acorn Property Group, Wrenbridge and Avon Fire & Rescue Service. - Contact: info@biofarm.co.uk or https://www.biofarm.co.uk/contact ## Biodiversity Net Gain guides - [What is Biodiversity Net Gain?](https://www.biofarm.co.uk/biodiversity-net-gain): Cornerstone guide — what BNG is, who it applies to, exemptions, on site vs off site delivery, and how Biofarm delivers it. - [Biodiversity Units](https://www.biofarm.co.uk/biodiversity-units): How to secure off site biodiversity units, how they differ from statutory biodiversity credits and carbon credits, and what drives cost. - [The Biodiversity Metric](https://www.biofarm.co.uk/biodiversity-metric): How the statutory biodiversity metric measures biodiversity — habitat type, condition, size, strategic significance, and the Spatial and Temporal Risk Multipliers. ## Working with Biofarm - [For Developers](https://www.biofarm.co.uk/developers): BNG delivery for residential, commercial and infrastructure projects — process, pricing approach, and developer FAQs. - [For Landowners](https://www.biofarm.co.uk/landowners): Turning land into a habitat bank — long term income while keeping land in the owner's hands. - [For Corporates](https://www.biofarm.co.uk/corporates): Nature restoration partnerships for corporate responsibility goals. - [Habitat Banks](https://www.biofarm.co.uk/habitat-banks): Biofarm's habitat bank network — locations, catchments, available units and site details. - [Contact](https://www.biofarm.co.uk/contact): Start a project conversation with the Biofarm team. ## Company - [About Biofarm](https://www.biofarm.co.uk/about): Who Biofarm is — property, land, planning and ecology specialists, and why the company exists. - [Team](https://www.biofarm.co.uk/team): The people behind Biofarm. - [FAQ](https://www.biofarm.co.uk/faq): Common questions across BNG, units, pricing and habitat management. ## Optional - [Stories](https://www.biofarm.co.uk/stories): Field notes, habitat updates, BNG policy commentary and case studies.