Solar panels, heat pumps and insulation in Highgate Village conservation area
In the Highgate Village conservation area (Camden), 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. An Article 4 direction published by Camden covers this area, but the published data does not say which rights it removes — check the direction before any work. The area has 180 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. 481 homes inside the boundary have an energy certificate: 64.9% are solid-wall homes with no wall insulation, 91.5% heat with a gas boiler and 64.0% are rated D–G; 4 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
481homes with an energy certificate
64.9%solid walls, no insulation
91.5%heated by a gas boiler
4heat pumps
Article 4: An Article 4 direction published by Camden covers this area, but the published data does not say which rights it removes — check the direction before any work. (Basements)
What needs planning permission in Highgate Village
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: 180 in the area (grade I: 2, II*: 19). 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: 57% 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 = 481)
Walls
Homes
Share
Solid wall (brick or stone), no insulation
312
64.9%
Cavity wall, unfilled
43
8.9%
Cavity wall, insulated (as built or unspecified)
33
6.9%
Cavity wall, partly insulated
18
3.7%
Modern wall (U-value from the design)
18
3.7%
Other or not known
16
3.3%
Cavity wall, filled
14
2.9%
Solid wall, internal insulation
8
1.7%
Solid wall, insulated
7
1.5%
Cavity wall, internal or external insulation
5
1.0%
Timber frame
4
0.8%
Solid wall, external insulation
2
0.4%
Solid wall, partly insulated
1
0.2%
Heating
Homes
Share
Gas boiler
440
91.5%
Communal heating
25
5.2%
Electric (storage heaters, panels, boiler)
9
1.9%
Heat pump
4
0.8%
LPG
2
0.4%
Oil
1
0.2%
Loft / roof insulation
Homes
Share
No insulation
85
17.7%
Under 200 mm
43
8.9%
200 mm or more
38
7.9%
Insulated (depth not recorded)
116
24.1%
Flat or other home above
180
37.4%
Other
19
4.0%
Windows
Homes
Share
Double glazed
298
62.0%
Single glazed
147
30.6%
Secondary glazing
33
6.9%
Triple glazed
3
0.6%
CDE
Energy rating: A 2 (0.4%) · B 29 (6.0%) · C 142 (29.5%) · D 200 (41.6%) · E 100 (20.8%) · F 6 (1.2%) · G 2 (0.4%). Houses and bungalows: 43% of the homes; solar panels on 0.4% of the certificates. Most common build period on the certificates: 1900-1929. Designated: 1 April 1978.
Compared with Camden and England
Share of homes
Highgate Village
All 40 areas in Camden
England
Solid walls, no insulation
64.9%
67.1%
48.7%
Gas boiler
91.5%
67.5%
66.4%
Rated D–G
64.0%
—
56.5%
Caveats
Certificates describe a home when it was assessed; 52% of these are from 2020 or later (latest 28 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 Camden if in doubt.
Boundary: London Borough of Camden via planning.data.gov.uk (entity 44009654, reference CA19, 80.7 ha); the council's appraisal or map. Homes are placed by the coordinates of their UPRN (OS Open UPRN); addresses are not shown.