Data study
The GetComfort Overheating Index
This index ranks London boroughs by how exposed their homes are to summer overheating. We run the same deterministic model our Home Cooling Checker uses across the real energy-performance data for four common home types in each borough, weighted by how many of each there are. It is a modelled comparison, not a measured temperature.
Each borough score is a weighted average across four tracked home types - top-floor flats, Victorian terraces, new-builds and loft conversions - not every home in the borough. Index computed 11 July 2026.
Richmond upon Thames
40/100moderate modelled risk
- Top-floor flats
- 41(moderate)
- Victorian terraces
- 38(low)
- New-builds
- 32(low)
- Loft conversions
- 43(moderate)
Southend-on-Sea
40/100moderate modelled risk
- Top-floor flats
- 47(moderate)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 29(low)
Brent
39/100low modelled risk
- Top-floor flats
- 46(moderate)
- Victorian terraces
- 32(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Hounslow
39/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 38(low)
- New-builds
- 30(low)
- Loft conversions
- 42(moderate)
Lambeth
39/100low modelled risk
- Top-floor flats
- 46(moderate)
- Victorian terraces
- 32(low)
- New-builds
- 28(low)
- Loft conversions
- 37(low)
Lewisham
39/100low modelled risk
- Top-floor flats
- 46(moderate)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Slough
39/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 25(low)
Islington
38/100low modelled risk
- Top-floor flats
- 46(moderate)
- Victorian terraces
- 32(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Hackney
38/100low modelled risk
- Top-floor flats
- 46(moderate)
- Victorian terraces
- 32(low)
- New-builds
- 23(low)
- Loft conversions
- 36(low)
Haringey
38/100low modelled risk
- Top-floor flats
- 46(moderate)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Blackpool
38/100low modelled risk
- Top-floor flats
- 47(moderate)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 39(low)
Camden
37/100low modelled risk
- Top-floor flats
- 47(moderate)
- Victorian terraces
- 31(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Hammersmith and Fulham
37/100low modelled risk
- Top-floor flats
- 47(moderate)
- Victorian terraces
- 32(low)
- New-builds
- 23(low)
- Loft conversions
- 42(moderate)
Tower Hamlets
37/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 32(low)
- New-builds
- 28(low)
- Loft conversions
- 26(low)
Waltham Forest
37/100low modelled risk
- Top-floor flats
- 46(moderate)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 36(low)
Wandsworth
37/100low modelled risk
- Top-floor flats
- 46(moderate)
- Victorian terraces
- 32(low)
- New-builds
- 28(low)
- Loft conversions
- 37(low)
Newcastle upon Tyne
37/100low modelled risk
- Top-floor flats
- 46(moderate)
- Victorian terraces
- 32(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Gateshead
37/100low modelled risk
- Top-floor flats
- 45(moderate)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Brighton
37/100low modelled risk
- Top-floor flats
- 47(moderate)
- Victorian terraces
- 32(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Westminster
36/100low modelled risk
- Top-floor flats
- 47(moderate)
- Victorian terraces
- 31(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Bradford
36/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 35(low)
- New-builds
- 23(low)
- Loft conversions
- 40(moderate)
Leeds
35/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 39(low)
Barking and Dagenham
35/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Bromley
35/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Ealing
35/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 33(low)
- New-builds
- 24(low)
- Loft conversions
- 37(low)
Enfield
35/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Harrow
35/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Havering
35/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Kensington and Chelsea
35/100low modelled risk
- Top-floor flats
- 48(moderate)
- Victorian terraces
- 31(low)
- New-builds
- 28(low)
- Loft conversions
- 38(low)
Kingston upon Thames
35/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Sutton
35/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 26(low)
Lancaster
35/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 39(low)
Sheffield
35/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 35(low)
- New-builds
- 23(low)
- Loft conversions
- 39(low)
Birmingham
35/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Worthing
35/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Torbay
35/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 28(low)
Croydon
34/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Oxford
34/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Barnet
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Bexley
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Greenwich
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 33(low)
- New-builds
- 28(low)
- Loft conversions
- 37(low)
Hillingdon
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 33(low)
- New-builds
- 24(low)
- Loft conversions
- 27(low)
Merton
34/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 33(low)
- New-builds
- 24(low)
- Loft conversions
- 37(low)
Newham
34/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 33(low)
- New-builds
- 28(low)
- Loft conversions
- 36(low)
Redbridge
34/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Southwark
34/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 32(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Sunderland
34/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 39(low)
Oldham
34/100low modelled risk
- Top-floor flats
- 33(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Stockport
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 24(low)
- Loft conversions
- 28(low)
Wirral
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 39(low)
Blackburn
34/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Burnley
34/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 29(low)
Hull
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Nottingham
34/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 39(low)
Leicester
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Lincoln
34/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 33(low)
Coventry
34/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 35(low)
Wolverhampton
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 28(low)
Walsall
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 26(low)
Dudley
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Stoke-on-Trent
34/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Worcester
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Warwick
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Norwich
34/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 35(low)
Ipswich
34/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 36(low)
Luton
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Watford
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 28(low)
- Loft conversions
- 36(low)
Harlow
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 25(low)
Thurrock
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Reading
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Portsmouth
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Southampton
34/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 32(low)
- New-builds
- 26(low)
- Loft conversions
- 26(low)
Gosport
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 33(low)
- New-builds
- 24(low)
- Loft conversions
- 26(low)
Woking
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 33(low)
- New-builds
- 25(low)
- Loft conversions
- 26(low)
Eastbourne
34/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 33(low)
- New-builds
- 27(low)
- Loft conversions
- 37(low)
Hastings
34/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 33(low)
- New-builds
- 24(low)
- Loft conversions
- 38(low)
Folkestone
34/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Bristol
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Bath
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Bournemouth
34/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 32(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Middlesbrough
33/100low modelled risk
- Top-floor flats
- 33(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Hartlepool
33/100low modelled risk
- Top-floor flats
- 33(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 39(low)
Darlington
33/100low modelled risk
- Top-floor flats
- 33(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Manchester
33/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Salford
33/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Bolton
33/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Bury
33/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 28(low)
Liverpool
33/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 33(low)
- New-builds
- 24(low)
- Loft conversions
- 37(low)
St Helens
33/100low modelled risk
- Top-floor flats
- 33(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 28(low)
Barnsley
33/100low modelled risk
- Top-floor flats
- 33(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 36(low)
Doncaster
33/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 34(low)
York
33/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 33(low)
- New-builds
- 24(low)
- Loft conversions
- 26(low)
Derby
33/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Mansfield
33/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Tamworth
33/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 26(low)
Cambridge
33/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 25(low)
Bedford
33/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Stevenage
33/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 25(low)
St Albans
33/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 26(low)
Colchester
33/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Great Yarmouth
33/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Havant
33/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 28(low)
Guildford
33/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Crawley
33/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 26(low)
Canterbury
33/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 26(low)
Medway
33/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 26(low)
Dover
33/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Plymouth
33/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Exeter
33/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 37(low)
Gloucester
33/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 26(low)
Cheltenham
33/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 33(low)
- New-builds
- 24(low)
- Loft conversions
- 26(low)
Swindon
32/100low modelled risk
- Top-floor flats
- 33(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 25(low)
Stockton-on-Tees
32/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 26(low)
Rochdale
32/100low modelled risk
- Top-floor flats
- 33(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 28(low)
Wigan
32/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 28(low)
Warrington
32/100low modelled risk
- Top-floor flats
- 33(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 26(low)
Rotherham
32/100low modelled risk
- Top-floor flats
- 33(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 26(low)
Stafford
32/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 28(low)
Nuneaton
32/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 25(low)
Peterborough
32/100low modelled risk
- Top-floor flats
- 33(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 24(low)
Chelmsford
32/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 28(low)
Basildon
32/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 28(low)
Winchester
32/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Basingstoke
32/100low modelled risk
- Top-floor flats
- 33(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Fareham
32/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 33(low)
- New-builds
- 23(low)
- Loft conversions
- 26(low)
Maidstone
32/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 28(low)
Ashford
32/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Dartford
32/100low modelled risk
- Top-floor flats
- 33(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 26(low)
Bracknell
32/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 26(low)
Telford
31/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Lichfield
31/100low modelled risk
- Top-floor flats
- 34(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 27(low)
Milton Keynes
31/100low modelled risk
- Top-floor flats
- 33(low)
- Victorian terraces
- 35(low)
- New-builds
- 23(low)
- Loft conversions
- 25(low)
Eastleigh
31/100low modelled risk
- Top-floor flats
- 33(low)
- Victorian terraces
- 32(low)
- New-builds
- 23(low)
- Loft conversions
- 25(low)
What is real, and what is modelled
The honest part of this index is being clear about its inputs. The scoring engine is real and deterministic; the property data is real; a few property-level factors we cannot know at borough scale are held constant so they never tilt the comparison between boroughs. Full detail is on our methodology page.
- EPC-band distribution (property_intelligence + epc_certificates, per archetype per borough)
- Modal construction era (same source)
- Average daytime noise level, dB (property_intelligence.noise_day_db)
- Archetype relative prevalence (real property counts among the 4 tracked archetypes)
- Median floor area and annual heating cost (property_intelligence, per archetype per borough)
- Conservation-area containment and near-listed-building proximity (planning.data.gov.uk + Historic England, spatially joined to property_intelligence.geom)
- Main aspect: held at east-facing for every property scored (neutral - neither the south/west solar-gain penalty nor the dual-aspect credit)
- Ventilation: held at natural for every property scored
- Single-aspect status, urban-heat-island exposure, occupant vulnerability: not modeled (left unset)
- Rooms to cool: the archetype's documented typical value, not a per-property figure
Where a borough breakdown shows heritage context, the conservation-area figure is a genuine point-in-polygon result and the near-listed figure is a within-30-metres proximity signal - being near a listed building does not make a home listed.
Conservation-area and listed-building records © Historic England 2026, via planning.data.gov.uk, used under the Open Government Licence v3.0. Data as of July 2026. See all data sources.
Journalists and researchers are welcome to cite the GetComfort Overheating Index with a link to this page and our methodology. Suggested wording: “the GetComfort Overheating Index, which models summer overheating risk for common London home types from public energy-performance data.”
Note for the GetComfort team: outreach to journalists, local press and partners is a deliberate editorial decision, made by you - this page is the publishable asset, not an automated link scheme. We do not buy, exchange or fabricate links.