Conservation areas in Harrow
London Borough of Harrow has 31 conservation areas in planning.data.gov.uk; 2,762 homes inside them have an energy certificate, and 55.6% of those are solid-wall homes without wall insulation. The largest by number of homes is Harrow on-the-Hill / Village (412). 1 of the areas overlaps an Article 4 direction that removes rights for windows, roofs, solar or heat pumps (Pinner / West Towers). The council does not publish Article 4 areas on planning.data.gov.uk. EPC register November 2026.
| Conservation area | Homes with EPC | Solid walls, no insulation | Gas boiler | Heat pumps | Listed buildings | Article 4 |
|---|---|---|---|---|---|---|
| Brookshill Drive and Grimsdyke Estate | 18 | 61% | 72% | 0 | 4 | not published by council |
| Harrow Weald | 0 | — | — | 0 | 0 | not published by council |
| Harrow on-the-Hill / Harrow Park | 23 | 74% | 100% | 0 | 3 | not published by council |
| Harrow on-the-Hill / Harrow School | 58 | 64% | 98% | 0 | 25 | not published by council |
| Harrow on-the-Hill / Mount Park Estate | 65 | 37% | 97% | 0 | 2 | not published by council |
| Harrow on-the-Hill / Roxborough Park and The Grove | 233 | 65% | 82% | 1 | 9 | not published by council |
| Harrow on-the-Hill / Roxeth Hill | 331 | 42% | 96% | 0 | 7 | not published by council |
| Harrow on-the-Hill / South Hill Avenue | 103 | 38% | 84% | 2 | 0 | not published by council |
| Harrow on-the-Hill / Sudbury Hill | 347 | 28% | 85% | 1 | 8 | not published by council |
| Harrow on-the-Hill / Village | 412 | 57% | 95% | 0 | 28 | not published by council |
| Pinner / East End Farm | 5 | 20% | 100% | 0 | 5 | not published by council |
| Pinner / Eastcote Village | 0 | — | — | 0 | 0 | not published by council |
| Pinner / Moss Lane | 29 | 76% | 100% | 0 | 0 | not published by council |
| Pinner / Pinner High Street | 82 | 39% | 48% | 0 | 26 | not published by council |
| Pinner / Pinner Hill Estate | 77 | 30% | 94% | 2 | 6 | not published by council |
| Pinner / Pinner Road | 0 | — | — | 0 | 0 | not published by council |
| Pinner / Pinnerwood Farm | 3 | 67% | 33% | 0 | 1 | not published by council |
| Pinner / Pinnerwood Park Estate | 197 | 95% | 99% | 1 | 1 | not published by council |
| Pinner / Rayners Lane | 84 | 77% | 88% | 0 | 2 | not published by council |
| Pinner / Tookes Green | 126 | 78% | 89% | 0 | 3 | not published by council |
| Pinner / Waxwell Close | 12 | 100% | 100% | 0 | 0 | not published by council |
| Pinner / Waxwell Lane | 29 | 72% | 97% | 0 | 6 | not published by council |
| Pinner / West Towers | 37 | 11% | 97% | 0 | 0 | removes some rights |
| Pinnerwood Park Estate PART 1 | 46 | 89% | 98% | 1 | 0 | not published by council |
| Stanmore and Edgware / Canons Park Estate | 138 | 73% | 95% | 2 | 6 | not published by council |
| Stanmore and Edgware / Edgware High Street | 0 | — | — | 0 | 0 | not published by council |
| Stanmore and Edgware / Kerry Avenue | 13 | 38% | 100% | 0 | 0 | not published by council |
| Stanmore and Edgware / Little Common | 109 | 49% | 92% | 0 | 19 | not published by council |
| Stanmore and Edgware / Old Church Lane | 13 | 46% | 100% | 0 | 16 | not published by council |
| Stanmore and Edgware / Stanmore Hill | 101 | 67% | 95% | 1 | 17 | not published by council |
| West Drive | 71 | 63% | 99% | 0 | 1 | not published by council |
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