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 25 September 2026.
Brent
49/100moderate modelled risk
- Top-floor flats
- 56(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 32(low)
- Loft conversions
- 46(moderate)
Lambeth
49/100moderate modelled risk
- Top-floor flats
- 56(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 38(low)
- Loft conversions
- 47(moderate)
Islington
48/100moderate modelled risk
- Top-floor flats
- 56(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 33(low)
- Loft conversions
- 48(moderate)
Richmond upon Thames
48/100moderate modelled risk
- Top-floor flats
- 50(moderate)
- Victorian terraces
- 46(moderate)
- New-builds
- 40(moderate)
- Loft conversions
- 51(moderate)
Hackney
48/100moderate modelled risk
- Top-floor flats
- 56(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 33(low)
- Loft conversions
- 46(moderate)
Haringey
48/100moderate modelled risk
- Top-floor flats
- 56(moderate)
- Victorian terraces
- 43(moderate)
- New-builds
- 33(low)
- Loft conversions
- 47(moderate)
Hounslow
48/100moderate modelled risk
- Top-floor flats
- 49(moderate)
- Victorian terraces
- 47(moderate)
- New-builds
- 39(low)
- Loft conversions
- 51(moderate)
Lewisham
48/100moderate modelled risk
- Top-floor flats
- 56(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 33(low)
- Loft conversions
- 47(moderate)
Camden
47/100moderate modelled risk
- Top-floor flats
- 57(moderate)
- Victorian terraces
- 41(moderate)
- New-builds
- 33(low)
- Loft conversions
- 47(moderate)
Tower Hamlets
47/100moderate modelled risk
- Top-floor flats
- 50(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 38(low)
- Loft conversions
- 36(low)
Wandsworth
47/100moderate modelled risk
- Top-floor flats
- 56(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 38(low)
- Loft conversions
- 47(moderate)
Hammersmith and Fulham
46/100moderate modelled risk
- Top-floor flats
- 56(moderate)
- Victorian terraces
- 41(moderate)
- New-builds
- 33(low)
- Loft conversions
- 52(moderate)
Waltham Forest
46/100moderate modelled risk
- Top-floor flats
- 55(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 32(low)
- Loft conversions
- 45(moderate)
Kensington and Chelsea
45/100moderate modelled risk
- Top-floor flats
- 58(moderate)
- Victorian terraces
- 41(moderate)
- New-builds
- 38(low)
- Loft conversions
- 48(moderate)
Westminster
45/100moderate modelled risk
- Top-floor flats
- 57(moderate)
- Victorian terraces
- 40(moderate)
- New-builds
- 33(low)
- Loft conversions
- 47(moderate)
Southend-on-Sea
45/100moderate modelled risk
- Top-floor flats
- 52(moderate)
- Victorian terraces
- 39(low)
- New-builds
- 28(low)
- Loft conversions
- 34(low)
Barking and Dagenham
44/100moderate modelled risk
- Top-floor flats
- 45(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 32(low)
- Loft conversions
- 36(low)
Ealing
44/100moderate modelled risk
- Top-floor flats
- 45(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 33(low)
- Loft conversions
- 46(moderate)
Enfield
44/100moderate modelled risk
- Top-floor flats
- 45(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 32(low)
- Loft conversions
- 46(moderate)
Harrow
44/100moderate modelled risk
- Top-floor flats
- 45(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 32(low)
- Loft conversions
- 36(low)
Newham
44/100moderate modelled risk
- Top-floor flats
- 45(moderate)
- Victorian terraces
- 43(moderate)
- New-builds
- 38(low)
- Loft conversions
- 46(moderate)
Southwark
44/100moderate modelled risk
- Top-floor flats
- 46(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 33(low)
- Loft conversions
- 47(moderate)
Slough
44/100moderate modelled risk
- Top-floor flats
- 45(moderate)
- Victorian terraces
- 44(moderate)
- New-builds
- 33(low)
- Loft conversions
- 30(low)
Greenwich
43/100moderate modelled risk
- Top-floor flats
- 44(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 37(low)
- Loft conversions
- 46(moderate)
Kingston upon Thames
43/100moderate modelled risk
- Top-floor flats
- 44(moderate)
- Victorian terraces
- 41(moderate)
- New-builds
- 31(low)
- Loft conversions
- 46(moderate)
Merton
43/100moderate modelled risk
- Top-floor flats
- 45(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 33(low)
- Loft conversions
- 46(moderate)
Redbridge
43/100moderate modelled risk
- Top-floor flats
- 45(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 32(low)
- Loft conversions
- 36(low)
Sutton
43/100moderate modelled risk
- Top-floor flats
- 44(moderate)
- Victorian terraces
- 42(moderate)
- New-builds
- 32(low)
- Loft conversions
- 34(low)
Newcastle upon Tyne
43/100moderate modelled risk
- Top-floor flats
- 51(moderate)
- Victorian terraces
- 38(low)
- New-builds
- 29(low)
- Loft conversions
- 43(moderate)
Blackpool
43/100moderate modelled risk
- Top-floor flats
- 52(moderate)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 43(moderate)
Brighton
43/100moderate modelled risk
- Top-floor flats
- 53(moderate)
- Victorian terraces
- 38(low)
- New-builds
- 29(low)
- Loft conversions
- 44(moderate)
Croydon
42/100moderate modelled risk
- Top-floor flats
- 44(moderate)
- Victorian terraces
- 41(moderate)
- New-builds
- 31(low)
- Loft conversions
- 45(moderate)
Barnet
42/100moderate modelled risk
- Top-floor flats
- 44(moderate)
- Victorian terraces
- 41(moderate)
- New-builds
- 32(low)
- Loft conversions
- 35(low)
Bexley
42/100moderate modelled risk
- Top-floor flats
- 43(moderate)
- Victorian terraces
- 41(moderate)
- New-builds
- 31(low)
- Loft conversions
- 35(low)
Birmingham
42/100moderate modelled risk
- Top-floor flats
- 43(moderate)
- Victorian terraces
- 41(moderate)
- New-builds
- 31(low)
- Loft conversions
- 45(moderate)
Bromley
41/100moderate modelled risk
- Top-floor flats
- 42(moderate)
- Victorian terraces
- 39(low)
- New-builds
- 29(low)
- Loft conversions
- 44(moderate)
Hillingdon
41/100moderate modelled risk
- Top-floor flats
- 42(moderate)
- Victorian terraces
- 40(moderate)
- New-builds
- 31(low)
- Loft conversions
- 34(low)
Gateshead
41/100moderate modelled risk
- Top-floor flats
- 49(moderate)
- Victorian terraces
- 37(low)
- New-builds
- 28(low)
- Loft conversions
- 42(moderate)
Manchester
41/100moderate modelled risk
- Top-floor flats
- 42(moderate)
- Victorian terraces
- 41(moderate)
- New-builds
- 31(low)
- Loft conversions
- 45(moderate)
Leicester
41/100moderate modelled risk
- Top-floor flats
- 42(moderate)
- Victorian terraces
- 41(moderate)
- New-builds
- 30(low)
- Loft conversions
- 44(moderate)
Leeds
40/100moderate modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 39(low)
- New-builds
- 28(low)
- Loft conversions
- 44(moderate)
Havering
40/100moderate modelled risk
- Top-floor flats
- 41(moderate)
- Victorian terraces
- 39(low)
- New-builds
- 28(low)
- Loft conversions
- 33(low)
Sheffield
40/100moderate modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 40(moderate)
- New-builds
- 29(low)
- Loft conversions
- 44(moderate)
Bradford
40/100moderate modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 40(moderate)
- New-builds
- 28(low)
- Loft conversions
- 44(moderate)
Nottingham
40/100moderate modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 40(moderate)
- New-builds
- 29(low)
- Loft conversions
- 45(moderate)
Luton
40/100moderate modelled risk
- Top-floor flats
- 41(moderate)
- Victorian terraces
- 39(low)
- New-builds
- 28(low)
- Loft conversions
- 33(low)
Watford
40/100moderate modelled risk
- Top-floor flats
- 41(moderate)
- Victorian terraces
- 40(moderate)
- New-builds
- 34(low)
- Loft conversions
- 42(moderate)
Portsmouth
40/100moderate modelled risk
- Top-floor flats
- 42(moderate)
- Victorian terraces
- 39(low)
- New-builds
- 30(low)
- Loft conversions
- 43(moderate)
Southampton
40/100moderate modelled risk
- Top-floor flats
- 42(moderate)
- Victorian terraces
- 38(low)
- New-builds
- 32(low)
- Loft conversions
- 31(low)
Worthing
40/100moderate modelled risk
- Top-floor flats
- 42(moderate)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 32(low)
Bristol
40/100moderate modelled risk
- Top-floor flats
- 41(moderate)
- Victorian terraces
- 40(moderate)
- New-builds
- 29(low)
- Loft conversions
- 44(moderate)
Oxford
39/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 42(moderate)
Salford
39/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 39(low)
- New-builds
- 29(low)
- Loft conversions
- 43(moderate)
Oldham
39/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 39(low)
- New-builds
- 28(low)
- Loft conversions
- 43(moderate)
Stockport
39/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 39(low)
- New-builds
- 29(low)
- Loft conversions
- 33(low)
Liverpool
39/100low modelled risk
- Top-floor flats
- 41(moderate)
- Victorian terraces
- 39(low)
- New-builds
- 30(low)
- Loft conversions
- 43(moderate)
Wirral
39/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 44(moderate)
Hull
39/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 39(low)
- New-builds
- 28(low)
- Loft conversions
- 42(moderate)
Wolverhampton
39/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 39(low)
- New-builds
- 28(low)
- Loft conversions
- 33(low)
Walsall
39/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 39(low)
- New-builds
- 28(low)
- Loft conversions
- 32(low)
Dudley
39/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 39(low)
- New-builds
- 28(low)
- Loft conversions
- 33(low)
Worcester
39/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 39(low)
- New-builds
- 28(low)
- Loft conversions
- 42(moderate)
Reading
39/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 39(low)
- New-builds
- 29(low)
- Loft conversions
- 43(moderate)
Torbay
39/100low modelled risk
- Top-floor flats
- 41(moderate)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 32(low)
Bournemouth
39/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 37(low)
- New-builds
- 28(low)
- Loft conversions
- 31(low)
Sunderland
38/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 43(moderate)
Middlesbrough
38/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 39(low)
- New-builds
- 28(low)
- Loft conversions
- 32(low)
Bolton
38/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 42(moderate)
Bury
38/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 32(low)
Blackburn
38/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 39(low)
- New-builds
- 28(low)
- Loft conversions
- 43(moderate)
Burnley
38/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 33(low)
Lancaster
38/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 37(low)
- New-builds
- 26(low)
- Loft conversions
- 42(moderate)
Derby
38/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 39(low)
- New-builds
- 28(low)
- Loft conversions
- 32(low)
Lincoln
38/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 39(low)
- New-builds
- 28(low)
- Loft conversions
- 38(low)
Coventry
38/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 40(moderate)
Stoke-on-Trent
38/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 32(low)
Norwich
38/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 40(moderate)
Ipswich
38/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 41(moderate)
Cambridge
38/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 30(low)
Stevenage
38/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 29(low)
Harlow
38/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 29(low)
Thurrock
38/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 31(low)
Gosport
38/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 37(low)
- New-builds
- 29(low)
- Loft conversions
- 30(low)
Woking
38/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 37(low)
- New-builds
- 29(low)
- Loft conversions
- 30(low)
Eastbourne
38/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 37(low)
- New-builds
- 32(low)
- Loft conversions
- 41(moderate)
Hastings
38/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 37(low)
- New-builds
- 29(low)
- Loft conversions
- 43(moderate)
Medway
38/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 31(low)
Plymouth
38/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 32(low)
Exeter
38/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 42(moderate)
Gloucester
38/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 39(low)
- New-builds
- 28(low)
- Loft conversions
- 31(low)
Cheltenham
38/100low modelled risk
- Top-floor flats
- 40(moderate)
- Victorian terraces
- 38(low)
- New-builds
- 29(low)
- Loft conversions
- 31(low)
Hartlepool
37/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 43(moderate)
Darlington
37/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 41(moderate)
York
37/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 37(low)
- New-builds
- 28(low)
- Loft conversions
- 30(low)
Warwick
37/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 37(low)
- New-builds
- 27(low)
- Loft conversions
- 41(moderate)
Tamworth
37/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 31(low)
St Albans
37/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 30(low)
Havant
37/100low modelled risk
- Top-floor flats
- 39(low)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 32(low)
Crawley
37/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 38(low)
- New-builds
- 28(low)
- Loft conversions
- 31(low)
Bath
37/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 37(low)
- New-builds
- 26(low)
- Loft conversions
- 41(moderate)
Swindon
36/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 37(low)
- New-builds
- 27(low)
- Loft conversions
- 29(low)
Stockton-on-Tees
36/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 30(low)
Rochdale
36/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 37(low)
- New-builds
- 27(low)
- Loft conversions
- 32(low)
Wigan
36/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 37(low)
- New-builds
- 27(low)
- Loft conversions
- 32(low)
St Helens
36/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 37(low)
- New-builds
- 27(low)
- Loft conversions
- 32(low)
Barnsley
36/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 37(low)
- New-builds
- 26(low)
- Loft conversions
- 39(low)
Rotherham
36/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 37(low)
- New-builds
- 26(low)
- Loft conversions
- 29(low)
Doncaster
36/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 37(low)
- New-builds
- 26(low)
- Loft conversions
- 37(low)
Mansfield
36/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 37(low)
- New-builds
- 27(low)
- Loft conversions
- 30(low)
Nuneaton
36/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 29(low)
Peterborough
36/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 28(low)
Bedford
36/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 37(low)
- New-builds
- 27(low)
- Loft conversions
- 30(low)
Basildon
36/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 37(low)
- New-builds
- 27(low)
- Loft conversions
- 32(low)
Colchester
36/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 37(low)
- New-builds
- 26(low)
- Loft conversions
- 30(low)
Fareham
36/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 37(low)
- New-builds
- 27(low)
- Loft conversions
- 30(low)
Guildford
36/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 37(low)
- New-builds
- 26(low)
- Loft conversions
- 30(low)
Canterbury
36/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 37(low)
- New-builds
- 26(low)
- Loft conversions
- 29(low)
Dartford
36/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 30(low)
Bracknell
36/100low modelled risk
- Top-floor flats
- 38(low)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 30(low)
Warrington
35/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 37(low)
- New-builds
- 27(low)
- Loft conversions
- 30(low)
Stafford
35/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 36(low)
- New-builds
- 26(low)
- Loft conversions
- 31(low)
Chelmsford
35/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 37(low)
- New-builds
- 27(low)
- Loft conversions
- 31(low)
Great Yarmouth
35/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 35(low)
- New-builds
- 25(low)
- Loft conversions
- 39(low)
Milton Keynes
35/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 38(low)
- New-builds
- 27(low)
- Loft conversions
- 29(low)
Basingstoke
35/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 37(low)
- New-builds
- 26(low)
- Loft conversions
- 31(low)
Eastleigh
35/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 36(low)
- New-builds
- 27(low)
- Loft conversions
- 29(low)
Maidstone
35/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 37(low)
- New-builds
- 26(low)
- Loft conversions
- 31(low)
Folkestone
35/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 34(low)
- New-builds
- 24(low)
- Loft conversions
- 39(low)
Telford
34/100low modelled risk
- Top-floor flats
- 37(low)
- Victorian terraces
- 38(low)
- New-builds
- 26(low)
- Loft conversions
- 30(low)
Ashford
34/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 37(low)
- New-builds
- 26(low)
- Loft conversions
- 30(low)
Dover
34/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 34(low)
- New-builds
- 23(low)
- Loft conversions
- 38(low)
Lichfield
33/100low modelled risk
- Top-floor flats
- 36(low)
- Victorian terraces
- 36(low)
- New-builds
- 25(low)
- Loft conversions
- 29(low)
Winchester
33/100low modelled risk
- Top-floor flats
- 35(low)
- Victorian terraces
- 35(low)
- New-builds
- 24(low)
- Loft conversions
- 28(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)
- Urban heat island exposure: share of residents in high, medium and low exposure neighbourhoods (ONS Census 2021 TS001/TS006 and LSOA population-weighted centroids, classified on density and residents within 10 km)
- 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, 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 September 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.