Complete
2,015,843 units across all 33 London boroughs, reconciled exactly to the source archive.
BUILDING-STOCK INTELLIGENCE · LONDON
The public record of every London building, put to work for retrofit.
Energy rating, ownership, heritage status and the assessor's own recommendations for 2 million units — reconciled against the sources, so the numbers hold when a client asks.
- UNITS
- 2,015,843
- CERTIFICATES
- 4.8 million
- RECOMMENDATIONS
- 15 million
- BOROUGHS
- 33 of 33
Turn a building list into a work programme.
Architecture and engineering practices are asked to decarbonise portfolios they have never surveyed, against standards that tighten every year. BuildGrade puts the public record to work: which buildings fall short, who owns them, what the assessor already recommended, and what heritage rules will allow — before the first site visit.
02 — WHY BUILDGRADE
Complete, certified, defensible, connected.
Certified
4.8 million lodged energy certificates and 15 million assessor recommendations, 2008 to today.
Defensible
Certified and modelled ratings are never averaged together; every figure names its source, licence and date.
Connected
Registered owners, listed status, conservation areas and minimum-standard exposure on the same map.
03 — WHO IT'S FOR
Built for the people who have to deliver it.
Large-scale retrofit succeeds or fails on targeting: the right homes, the right measures, the right owner at the table. BuildGrade does the desk work before the survey.
Fill a grant programme with the homes that qualify.
Every D-to-G home in your area with its certificate, tenure clue and assessor measures — a PAS 2035-ready list for Warm Homes: Local Grant and Social Housing Decarbonisation Fund bids, not a spreadsheet of postcodes.
Walk into the bid knowing the stock.
Size a decarbonisation programme before it is tendered: how many buildings, which built forms and ages, what the assessors already recommended, and which ones the heritage rules will constrain — with the sources cited.
Know which buildings cannot be let by 2030.
Screen a portfolio against the 2027 and 2030 minimum energy standards, see the measures that take each building from E to C, and report portfolio carbon with figures a lender or auditor can trace.
BuildGrade targets and evidences retrofit. It does not survey, design or install: that work stays with your PAS 2035 retrofit coordinator, assessor and installers, who start from better-founded ground.
04 — WHAT IT COVERS
Insight meets the site.
A rating is a starting point, not an answer. BuildGrade shows the certificate behind it, the outline it was measured against, the metered energy of the neighbourhood, and the constraints that decide what can be built — so a recommendation survives the planning meeting.
01
Stock map
Ratings, floor area, height, use and heritage for every unit, drawn as building outlines. Hover a building for its record; open it for the certificate behind the colour.
02
Retrofit studies
The assessor's measures with indicative costs, screened against listed-building and conservation-area rules, for one building or a whole portfolio.
03
Compliance and reporting
Minimum-standard screening, portfolio carbon and framework evidence in one export a client can check, every figure with its source and date.
05 — HOW IT WORKS
Five steps from the public record to a client report.
- 01AssembleThe public record for every building, reconciled and dated.
- 02ScreenAgainst the standard your client must meet.
- 03PrioritiseBy shortfall, ownership and feasibility.
- 04EngageThe registered owner, with the certificate in hand.
- 05ReportCarbon, compliance and progress, with sources.
Design partners welcome from October 2026.
Talk to us about targeting retrofit in your area or across your portfolio.