Biodiversity Net Gain Calculator for Developers

Draw habitats on our interactive map and instantly generate a planning-ready biodiversity metric for small or large developments.

Developer biodiversity net gain calculator preview

Who the Developer Tool is For

Automated Completion of the Small Site Metric

  • Simply by drawing habitats on the map, our tool will automatically complete the small-site biodiversity net gain metric for you.
  • You can also experiment with different habitats and see in real time how you can abide by the 10% biodiversity net gain.
  • Our built in biodiversity gain plan tool lets you complete the BNG report and download the PDF for free.
  • While our built in biodiversity survey tool will detect priority habitats and designated sites within and nearby your redline boundary.

Fast feasibility for client sites

  • Map baseline and proposed habitats for multiple design options without rebuilding spreadsheets each time.
  • Compare unit outcomes early so design teams can see which layouts reach policy targets fastest.
  • Export outputs that are easier to hand over to clients, ecologists, and planning officers.
  • Use the integrated biodiversity survey tool to flag constraints around the redline boundary.

Automated Completion of the Large Site Metric

  • By mapping out habitats across your development area, our tool will automatically complete the large-site biodiversity net gain metric for you.
  • Test alternative layouts, habitat mixes, and enhancements to understand how your project can achieve and exceed the 10% biodiversity net gain requirement.
  • Our built-in biodiversity gain strategy tool helps you prepare comprehensive BNG plans, generate impact assessments, and download necessary reports in PDF format.
  • The integrated biodiversity survey tool highlights priority habitats, designated sites, and ecological constraints across large, complex boundaries.
  • Experiment with compensating for lost habitat loss on site, without the need to purchase off-site credits.

How It Works

Four quick steps from site sketch to downloadable metric.

Step 1

Boundary

Select or draw your red line boundary on the map to set the project extent.

Step 2

Existing Habitats

Draw or Smart Select the habitats that are already present on your site. Choose types from a guided list and view the biodiversity value of each.

Step 3

Proposed Habitats

Add the habitats you intend to create or enhance. We'll calculate biodiversity units and changes automatically in the background. You can also experiment with multiple drafts.

Step 4: That's it!

Review the biodiversity units you've created, and if you're happy download your completed biodiversity net gain metric.

If you need a BNG plan, use the built in BNG Plan tool

Export metric placeholder

Key Features - Measure Biodiversity With Ease

Create or enhance habitats and track the outcome instantly

  • Draw habitats on your site to see how many biodiversity units each choice creates or loses.
  • Replace or enhance lower-value habitats to maximise on-site biodiversity net gain.
  • Each habitat has a distinctiveness value and feeds into live unit calculations in the tool.

Complete the biodiversity metric by drawing habitats on our map

  • Instead of measuring distances and inputting into the Excel manually, simply draw your habitats on the map.
  • The biodiversity net gain metric will be automatically completed for you and free to download.
  • The tool handles all of your planning needs including the built in biodiversity gain plan tool

Built In Trading Rule Violation Detection

  • There are many rules when it comes to habitat loss, including which habitats must replace removed habitats.
  • Our tool alerts you if you have violated any trading rules and shows you how to compensate.
  • The tool will also detect priority and irreplaceable habitats with the built in biodiversity survey tool
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