Solar panels, heat pumps and insulation in Golders Green conservation area
In the Golders Green conservation area (Barnet), 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 Barnet covers this area but deals with other things (such as changes of use); it does not change the rules below. The area has 7 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. 543 homes inside the boundary have an energy certificate: 66.1% are solid-wall homes with no wall insulation, 48.8% heat with a gas boiler and 48.8% are rated D–G; 7 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
543homes with an energy certificate
66.1%solid walls, no insulation
48.8%heated by a gas boiler
7heat pumps
Article 4: An Article 4 direction published by Barnet covers this area but deals with other things (such as changes of use); it does not change the rules below. (Article 4 Small Houses in Multiple Occupation (HMO) Area 1)
What needs planning permission in Golders 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)
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)
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)
Replacement windows and doors of similar appearance
No permission needed (permitted development)
Part 1 Class A, A.3(a)
Listed buildings: 7 in the area. 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: 97% 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 = 543)
Walls
Homes
Share
Solid wall (brick or stone), no insulation
359
66.1%
Modern wall (U-value from the design)
78
14.4%
Solid wall, internal insulation
39
7.2%
Timber frame
37
6.8%
Cavity wall, unfilled
13
2.4%
Solid wall, insulated
9
1.7%
Cavity wall, insulated (as built or unspecified)
3
0.6%
Cavity wall, filled
2
0.4%
Other or not known
2
0.4%
Cavity wall, partly insulated
1
0.2%
Heating
Homes
Share
Gas boiler
265
48.8%
Electric (storage heaters, panels, boiler)
145
26.7%
Communal heating
125
23.0%
Heat pump
7
1.3%
LPG
1
0.2%
Loft / roof insulation
Homes
Share
No insulation
91
16.8%
Under 200 mm
29
5.3%
200 mm or more
12
2.2%
Insulated (depth not recorded)
63
11.6%
Flat or other home above
291
53.6%
Other
57
10.5%
Windows
Homes
Share
Double glazed
431
79.4%
Single glazed
92
16.9%
Secondary glazing
18
3.3%
Triple glazed
2
0.4%
CDE
Energy rating: A 1 (0.2%) · B 22 (4.1%) · C 255 (47.0%) · D 186 (34.3%) · E 74 (13.6%) · F 3 (0.6%) · G 2 (0.4%). Houses and bungalows: 3% of the homes; solar panels on 0.0% of the certificates. Most common build period on the certificates: 1900-1929. Designated: 4 March 1998.
Compared with Barnet and England
Share of homes
Golders Green
All 16 areas in Barnet
England
Solid walls, no insulation
66.1%
48.2%
48.7%
Gas boiler
48.8%
84.8%
66.4%
Rated D–G
48.8%
—
56.5%
Caveats
Certificates describe a home when it was assessed; 62% 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 Barnet if in doubt.
Boundary: London Borough of Barnet via planning.data.gov.uk (entity 44002413, reference CA16, 18.3 ha); the council's appraisal or map. Homes are placed by the coordinates of their UPRN (OS Open UPRN); addresses are not shown.