Solar panels, heat pumps and insulation in Wolsingham conservation area
In the Wolsingham conservation area (Durham), 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 38 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. 452 homes inside the boundary have an energy certificate: 56.0% are solid-wall homes with no wall insulation, 89.4% heat with a gas boiler and 66.4% are rated D–G; 1 has 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
452homes with an energy certificate
56.0%solid walls, no insulation
89.4%heated by a gas boiler
1heat pumps
Article 4: Durham does not publish Article 4 areas on planning.data.gov.uk — check with the council.
What needs planning permission in Wolsingham
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: 38 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: 9% 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 = 452)
Walls
Homes
Share
Solid wall (brick or stone), no insulation
253
56.0%
Cavity wall, insulated (as built or unspecified)
76
16.8%
Cavity wall, filled
53
11.7%
Cavity wall, unfilled
27
6.0%
Modern wall (U-value from the design)
14
3.1%
Solid wall, insulated
13
2.9%
Solid wall, internal insulation
9
2.0%
Cavity wall, partly insulated
6
1.3%
Timber frame
1
0.2%
Heating
Homes
Share
Gas boiler
404
89.4%
Electric (storage heaters, panels, boiler)
23
5.1%
Oil
14
3.1%
Solid fuel (wood, coal)
8
1.8%
LPG
2
0.4%
Heat pump
1
0.2%
Loft / roof insulation
Homes
Share
No insulation
64
14.2%
Under 200 mm
102
22.6%
200 mm or more
225
49.8%
Insulated (depth not recorded)
27
6.0%
Flat or other home above
20
4.4%
Other
14
3.1%
Windows
Homes
Share
Double glazed
414
91.6%
Single glazed
29
6.4%
Secondary glazing
9
2.0%
CDE
Energy rating: A 1 (0.2%) · B 12 (2.7%) · C 139 (30.8%) · D 178 (39.4%) · E 94 (20.8%) · F 24 (5.3%) · G 4 (0.9%). Houses and bungalows: 91% of the homes; solar panels on 0.7% of the certificates. Most common build period on the certificates: before 1900. Designated: 1 January 1975.
Compared with Durham and England
Share of homes
Wolsingham
All 93 areas in Durham
England
Solid walls, no insulation
56.0%
47.6%
48.7%
Gas boiler
89.4%
72.9%
66.4%
Rated D–G
66.4%
—
56.5%
Caveats
Certificates describe a home when it was assessed; 44% of these are from 2020 or later (latest 13 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 Durham if in doubt.
Boundary: Durham County Council via planning.data.gov.uk (entity 44000459, reference 9250, 66.3 ha). Homes are placed by the coordinates of their UPRN (OS Open UPRN); addresses are not shown.