Solar panels, heat pumps and insulation in Ravenscourt & Starch Green conservation area
In the Ravenscourt & Starch Green conservation area (Hammersmith & Fulham), external wall insulation needs planning permission, and so does an air source heat pump on a wall or roof facing the road; one at the back or side, internal and loft insulation and solar panels on a roof slope normally do not. The area has 25 listed buildings; on a listed building solar panels and heat pumps are not permitted development at all and need planning permission and listed building consent. 1,759 homes inside the boundary have an energy certificate: 51.2% are solid-wall homes with no wall insulation, 69.9% heat with a gas boiler and 46.0% are rated D–G; 47 have a heat pump. EPC register November 2026; rules as at 21 October 2026.
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
1,759homes with an energy certificate
51.2%solid walls, no insulation
69.9%heated by a gas boiler
47heat pumps
Article 4: Hammersmith & Fulham does not publish Article 4 areas on planning.data.gov.uk — check with the council.
What needs planning permission in Ravenscourt & Starch Green
Work (house, not listed)
In a conservation area
Rule
Air source heat pump on a wall or roof facing the road, or nearer the road than the house
Planning permission needed
Part 14 Class G, G.1(j)
Air source heat pump at the back or side (outdoor unit up to 1.5 m³, MCS Planning Standards, one per house — two on a detached house)
No permission needed (permitted development), unless an Article 4 direction removes it — check with the council
Part 14 Class G
Solar panels on a pitched roof (up to 0.2 m proud, not above the ridge)
No permission needed (permitted development), unless an Article 4 direction removes it — check with the council
Part 14 Class A, A.2(c)
Solar panels on a wall, balcony or roof enclosure facing the road
Planning permission needed
Part 14 Class A, A.2(e)
Solar panels on a flat roof (up to 0.6 m above the roof)
Prior approval of appearance from the council, unless an Article 4 direction removes it — check with the council
Replacement windows and doors of similar appearance
No permission needed (permitted development), unless an Article 4 direction removes it — check with the council
Part 1 Class A, A.3(a)
Listed buildings: 25 in the area (grade I: 0, II*: 2). The table is for houses that are not listed: on a listed building, solar panels and air source heat pumps are not permitted development at all (they need planning permission), and any of these works needs listed building consent.
Flats: 63% of the certified homes here are flats or maisonettes. Homes in a block of flats have no householder rights for alterations; heat pumps and solar have their own, tighter rules for blocks of flats.
The homes in the area (latest certificate per home, n = 1,759)
Walls
Homes
Share
Solid wall (brick or stone), no insulation
900
51.2%
Cavity wall, insulated (as built or unspecified)
418
23.8%
Cavity wall, unfilled
148
8.4%
Modern wall (U-value from the design)
114
6.5%
Other or not known
45
2.6%
Solid wall, internal insulation
30
1.7%
Cavity wall, filled
27
1.5%
Solid wall, insulated
24
1.4%
Timber frame
21
1.2%
Cavity wall, partly insulated
19
1.1%
Cavity wall, internal or external insulation
6
0.3%
Solid wall, partly insulated
5
0.3%
Solid wall, external insulation
2
0.1%
Heating
Homes
Share
Gas boiler
1,230
69.9%
Communal heating
299
17.0%
Electric (storage heaters, panels, boiler)
182
10.3%
Heat pump
47
2.7%
Other
1
0.1%
Loft / roof insulation
Homes
Share
No insulation
340
19.3%
Under 200 mm
205
11.7%
200 mm or more
88
5.0%
Insulated (depth not recorded)
326
18.5%
Flat or other home above
719
40.9%
Other
81
4.6%
Windows
Homes
Share
Double glazed
1,534
87.2%
Single glazed
191
10.9%
Secondary glazing
22
1.3%
Triple glazed
12
0.7%
BCDE
Energy rating: A 2 (0.1%) · B 219 (12.5%) · C 729 (41.4%) · D 539 (30.6%) · E 225 (12.8%) · F 38 (2.2%) · G 7 (0.4%). Houses and bungalows: 37% of the homes; solar panels on 0.7% of the certificates. Most common build period on the certificates: 1900-1929.
Compared with Hammersmith & Fulham and England
Share of homes
Ravenscourt & Starch Green
All 46 areas in Hammersmith & Fulham
England
Solid walls, no insulation
51.2%
65.3%
48.7%
Gas boiler
69.9%
70.7%
66.4%
Rated D–G
46.0%
—
56.5%
Caveats
Certificates describe a home when it was assessed; 55% of these are from 2020 or later (latest 30 October 2026). “No insulation (assumed)” is the assessor's default for older walls.
The rules are England's national permitted development rules (General Permitted Development Order 2015, Schedule 2, as at 21 October 2026). They do not cover building regulations or a council's own conditions. This is not a planning decision: ask Hammersmith & Fulham if in doubt.
Boundary: London Borough of Hammersmith & Fulham via planning.data.gov.uk (entity 44008384, reference 8, 73.6 ha). Homes are placed by the coordinates of their UPRN (OS Open UPRN); addresses are not shown.