Solar panels, heat pumps and insulation in Harrogate conservation area
In the Harrogate conservation area (North Yorkshire), 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 143 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. 9,070 homes inside the boundary have an energy certificate: 53.1% are solid-wall homes with no wall insulation, 78.3% heat with a gas boiler and 59.9% are rated D–G; 48 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
9,070homes with an energy certificate
53.1%solid walls, no insulation
78.3%heated by a gas boiler
48heat pumps
Article 4: North Yorkshire does not publish Article 4 areas on planning.data.gov.uk — check with the council.
What needs planning permission in Harrogate
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: 143 in the area (grade I: 1, II*: 10). 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: 65% 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 = 9,070)
Walls
Homes
Share
Solid wall (brick or stone), no insulation
4,819
53.1%
Cavity wall, insulated (as built or unspecified)
771
8.5%
Modern wall (U-value from the design)
715
7.9%
Cavity wall, unfilled
604
6.7%
Cavity wall, filled
566
6.2%
Timber frame
460
5.1%
Solid wall, internal insulation
406
4.5%
Solid wall, insulated
326
3.6%
Other or not known
208
2.3%
Cavity wall, partly insulated
151
1.7%
Cavity wall, internal or external insulation
20
0.2%
Solid wall, partly insulated
19
0.2%
Solid wall, external insulation
5
0.1%
Heating
Homes
Share
Gas boiler
7,099
78.3%
Electric (storage heaters, panels, boiler)
1,706
18.8%
Communal heating
208
2.3%
Heat pump
48
0.5%
LPG
4
0.0%
Oil
3
0.0%
Solid fuel (wood, coal)
2
0.0%
Loft / roof insulation
Homes
Share
No insulation
1,065
11.8%
Under 200 mm
1,268
14.0%
200 mm or more
1,391
15.4%
Insulated (depth not recorded)
1,156
12.8%
Flat or other home above
3,713
41.0%
Other
468
5.2%
Windows
Homes
Share
Double glazed
8,026
88.5%
Single glazed
807
8.9%
Secondary glazing
222
2.4%
Triple glazed
15
0.2%
CDE
Energy rating: A 8 (0.1%) · B 504 (5.6%) · C 3,123 (34.4%) · D 3,737 (41.2%) · E 1,464 (16.1%) · F 206 (2.3%) · G 28 (0.3%). Houses and bungalows: 35% of the homes; solar panels on 0.2% of the certificates. Most common build period on the certificates: 1900-1929. Designated: 15 April 1973.
Compared with North Yorkshire and England
Share of homes
Harrogate
All 248 areas in North Yorkshire
England
Solid walls, no insulation
53.1%
54.2%
48.7%
Gas boiler
78.3%
64.9%
66.4%
Rated D–G
59.9%
—
56.5%
Caveats
Certificates describe a home when it was assessed; 53% of these are from 2020 or later (latest 31 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 North Yorkshire if in doubt.
Boundary: North Yorkshire Council via planning.data.gov.uk (entity 44005126, reference 6249, 514.8 ha); the council's appraisal or map. Homes are placed by the coordinates of their UPRN (OS Open UPRN); addresses are not shown.