EPC Price Check

Conservation areas in Westminster

City of Westminster has 56 conservation areas in planning.data.gov.uk; 66,204 homes inside them have an energy certificate, and 66.4% of those are solid-wall homes without wall insulation. The largest by number of homes is Bayswater (10,657). 56 of the areas overlap an Article 4 direction that removes rights for windows, roofs, solar or heat pumps. The council publishes its Article 4 areas on planning.data.gov.uk. EPC register November 2026.

How it works ↓

Data: EPC register November 2026 (latest certificate per home), conservation area boundaries 3 November 2026, permitted development rules as at 21 October 2026 · calculated 5 November 2026 · Methodology and sources

56conservation areas
66,204homes with an EPC inside them
66.4%solid walls, no insulation

In Westminster there is no conservation area without an Article 4 direction: all 56 overlap with directions that remove some rights over windows, roofs, panels or pumps. Overlap does not mean the direction covers the whole area, so before turning to the general rules, check the direction for your street. What exactly it removes, the council's page for the area and the text of the direction will tell you.

From Pimlico to Dolphin Square

Uninsulated solid walls in 66.4% of homes in the areas, against 48.7% across England's conservation areas; 3,894 listed buildings. In Dolphin Square, with 1,121 homes, and in Lillington Gardens such walls make up 0%, in Westminster Cathedral 91%, in Pimlico 85% out of 5,003 homes.

Heat pumps go up here too

According to the EPC register as of November 2026, the areas hold 1,503 heat pumps: 207 in Mayfair with its 3,672 homes (and 605 listed buildings there), 143 on Harley Street, 138 in the largest one, Bayswater. The rules are national, as at 21 October 2026; if in doubt, Westminster council decides.

All 56 conservation areas in Westminster

Conservation areaHomes with EPCSolid walls, no insulationGas boilerHeat pumpsListed buildingsArticle 4
Adelphi 146 46% 55% 4 26 removes some rights
Albert Gate 86 81% 28% 2 7 removes some rights
Aldridge Road Villas And Leamington Road Villas 408 81% 96% 1 0 removes some rights
Bayswater 10,657 69% 53% 138 268 removes some rights
Belgravia 2,442 81% 77% 54 207 removes some rights
Birdcage Walk 489 39% 47% 29 47 removes some rights
Broadway And Christchurch Gardens 399 33% 46% 2 8 removes some rights
Charlotte Street, West 176 55% 61% 7 6 removes some rights
Chinatown 306 46% 68% 9 37 removes some rights
Churchill Gardens 1,166 6% 1% 34 10 removes some rights
Cleveland Street 52 90% 62% 0 4 removes some rights
Covent Garden 1,330 54% 53% 96 168 removes some rights
Dolphin Square 1,121 0% 3% 1 1 removes some rights
Dorset Square 1,589 78% 44% 59 36 removes some rights
East Marylebone 1,455 52% 56% 53 43 removes some rights
Fisherton Street Estate 78 69% 100% 0 0 removes some rights
Grosvenor Gardens 119 69% 90% 1 23 removes some rights
Hallfield Estate 435 3% 93% 0 2 removes some rights
Hanway Street 35 11% 6% 22 6 removes some rights
Harley Street 3,438 67% 57% 143 234 removes some rights
Haymarket 81 36% 30% 6 10 removes some rights
Knightsbridge 1,174 77% 62% 57 157 removes some rights
Knightsbridge Green 138 92% 30% 1 1 removes some rights
Leicester Square 64 58% 34% 21 7 removes some rights
Lillington Gardens 733 0% 2% 0 20 removes some rights
Lisson Grove 584 66% 68% 3 11 removes some rights
Maida Vale 5,615 84% 90% 34 123 removes some rights
Mayfair 3,672 64% 46% 207 605 removes some rights
Medway Street 22 73% 68% 0 2 removes some rights
Millbank 492 85% 84% 0 29 removes some rights
Molyneux Street 268 68% 59% 6 9 removes some rights
Paddington Green 317 63% 54% 0 8 removes some rights
Page Street 564 88% 94% 1 17 removes some rights
Peabody Avenue 205 71% 71% 0 0 removes some rights
Peabody Estates: South Westminster 288 89% 94% 0 0 removes some rights
Pimlico 5,003 85% 78% 21 58 removes some rights
Portman Estate 4,353 73% 59% 73 238 removes some rights
Queens Park Estate 1,485 79% 97% 2 14 removes some rights
Queensway 1,100 63% 21% 8 3 removes some rights
Regency Street 136 79% 94% 1 0 removes some rights
Regent Street 120 34% 10% 29 54 removes some rights
Regent's Park 485 63% 36% 11 136 removes some rights
Royal Parks 109 12% 45% 2 98 removes some rights
Savoy 6 67% 0% 1 22 removes some rights
Smith Square 395 24% 18% 2 76 removes some rights
Soho 2,002 44% 38% 129 218 removes some rights
St James's 619 48% 28% 54 196 removes some rights
St John's Wood 4,503 78% 70% 48 297 removes some rights
Strand 705 10% 6% 25 84 removes some rights
Stratford Place 187 42% 36% 43 11 removes some rights
Trafalgar Square 188 64% 59% 5 78 removes some rights
Vincent Square 558 43% 55% 3 14 removes some rights
Westbourne 3,186 72% 73% 53 21 removes some rights
Westminster Abbey And Parliament Square 174 41% 36% 0 67 removes some rights
Westminster Cathedral 576 91% 74% 2 5 removes some rights
Whitehall 170 44% 2% 0 72 removes some rights

Areas with at least 30 homes with an energy certificate have their own page. Areas drawn only as a point in planning.data.gov.uk have no boundary, so no homes are counted. England, all conservation areas: 48.7% solid walls without insulation, 66.4% gas boilers.

What needs planning permission in a conservation area

Guides: Heat pumps · Solar panels · External wall insulation · Replacement windows · Am I in a conservation area? Postcode checker

Related pages

Largest areas