Paint nature.
Prove the fiscal case.
Draw a green roof, mini-forest or bioswale on a satellite map. In 120 seconds you get a sourced, exportable dossier of avoided stormwater, cooling and healthcare costs — the numbers a CFO will sign.
From a polygon on a satellite map to a 20-year ROI chart.
Paint
Drop a site pin, then draw mini-forests, green roofs, pollinator corridors or bioswales straight onto satellite imagery.
Quantify
Live climate, soil and species data feed the PES engine. Every dollar figure shows its inputs and formula.
Justify
Edit the executive recommendations, then export a branded PDF with 5 / 10 / 20-year projections and policy alignment.
Seven evidence-backed NBS types. Live suitability for every site.
Three transparent revenue lines.
Stormwater ROI
Volume retained × local stormwater utility fee. Avoided grey-infrastructure spend.
Thermal ROI
Modelled cooling effect × adjacent AC load × kWh tariff. Avoided peak-summer energy.
Social ROI
Vulnerable-population reduction in heat-stress admissions × healthcare cost-per-bed.
A working dossier in 120 seconds.
No slide deck. The Sandpit loads a real London site, lets you paint a green roof or mini-forest, and recomputes stormwater, cooling and health ROI live as you draw.
- Click-to-paint interventions on Mapbox satellite tiles
- Live PES recalculation — every figure traces to its source row
- Toggle climate, biodiversity and heat-vulnerability layers
- Export the same branded PDF a procurement team will sign
Other tools tell you what's there. We tell you what it's worth.
Most green-infrastructure software stops at inventory or carbon. Urban Nature Audit closes the loop with a sourced fiscal case in pounds avoided — the artefact a CFO, planner or BNG broker actually needs.
| Capability | Urban Nature Audit this product | i-Tree / Eco USDA | Natural Capital tools EnTrade · NCPT | Generic GIS QGIS · ArcGIS |
|---|---|---|---|---|
| Paint interventions on satellite imagery | partial | |||
| Sourced £ avoided cost per intervention | partial | partial | ||
| Stormwater + thermal + health in one dossier | partial | |||
| Defra BNG v4 unit uplift built in | partial | |||
| Investor-grade exportable PDF | partial | |||
| Time to first dossier | ~2 min | ~half-day | ~1 week | ~weeks |
| Setup / GIS expertise required | none | moderate | high | high |
"Replaces three consultancy spreadsheets with a single, sourced PDF."
"First tool that turns a green roof from cost-line into revenue-line."
"We model 14 sites in a morning. Used to take a fortnight."