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Synthetic illustrative example

Explore an illustrative options comparison.

Everything on this page is a synthetic example generated from fixed assumptions — not an observed or measured site result, and not a site assessment. No environmental data is retrieved for any postcode you type.

Synthetic illustrative example

Type a postcode to choose a synthetic example.

This is not an assessment. The text you type is turned into a number that picks a fixed, deterministic example. No climate, soil, hydrology or biodiversity data is retrieved for the place you enter, and no external data source is consulted.

Warning: this demonstration produces synthetic figures generated from the text you type. It is not a site assessment, no data source is consulted, and results cannot be exported or saved as an audit.

Demo only — the postcode just chooses a fixed synthetic example. Nothing about the real place is looked up.

What you’re looking at
Marylebone · London, UK

An illustrative Marylebone scenario with nature-based interventions. Every figure below is generated from fixed assumptions — it is not an observed or measured site result, and it is not a valuation.

See the valuation method
Illustrative economic value / yr
£3.14M
Switch example
Vitality Audit
Proposed interventions
Mini-Forest (Miyawaki) · 1,800 m²Bioswale · 1.1 kmGreen Roof · 9,400 m²
Illustrative headline
+0.42 vegetation density
Five-year modelled uplift across the catchment
Illustrative economic value / yr
£3.14M
Stormwater retained
82%
PM2.5 reduction
−18%
Wellbeing-years gained / yr
1,240
Carbon sequestered
184 tCO₂e/yr
Policy context · reference only
London Plan G5HM Treasury Green Book
Report layout illustration · no report is produced
Data view

Vitality Audit — London Marylebone

Assumed starting point. Low vegetation density (NDVI 0.21) across a 14 ha conservation area, with poor air quality and high demand for mental-health support. These are fixed example assumptions, not observed records.

Example options. Three pocket mini-forests (Miyawaki method), 1.1 km bioswale on Wigmore Street, and a green-roof retrofit programme across 18 commercial roofs.

↳ HM Treasury Green Book — WELLBY (2021)
↳ Schirone et al. (2011) Miyawaki succession
Urban Nature Audit · UrbanCat
Marylebone
London, UK
Headline
£3.14M
illustrative economic value / yr
Stormwater retained
82%
PM2.5 reduction
−18%
Wellbeing-years gained / yr
1,240
Carbon sequestered
184 tCO₂e/yr
£3.14M illustrative economic value · modelled wellbeing uplift. Methodology: London Plan G5 · HM Treasury Green Book.
Illustrative scenario · Generated from fixed assumptions · Not an observed or measured site result
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Next step

Discuss a council appraisal

UrbanCat is preparing a staff-operated appraisal service for UK councils: one council-controlled site, an existing baseline and three options. The service is under commercial-readiness review. Sending an enquiry does not confirm a booking or commission, and clients receive reviewed deliverables rather than account access.

Expert-assisted screening tool — under commercial-readiness review

Urban Nature Audit is an expert-assisted screening tool. Its outputs are screening-level and non-statutory, they are intended to be operated and interpreted by a competent professional, and the product is currently under commercial-readiness review. It does not replace:

  • an ecological survey
  • the official statutory biodiversity metric
  • planning advice
  • flood or drainage engineering
  • legal advice
  • a professional valuation