Solar panels, heat pumps and insulation in Caldon Canal conservation area
In the Caldon Canal conservation area (Stoke-on-Trent), 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 Stoke-on-Trent covers this area and removes permitted development rights for alterations to the roof (e.g. rooflights), chimneys, flues and soil pipes, painting the outside, so there these need planning permission too. The area has 2 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. 205 homes inside the boundary have an energy certificate: 56.6% are solid-wall homes with no wall insulation, 81.0% heat with a gas boiler and 57.1% 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
205homes with an energy certificate
56.6%solid walls, no insulation
81.0%heated by a gas boiler
1heat pumps
Article 4: An Article 4 direction published by Stoke-on-Trent covers this area and removes permitted development rights for alterations to the roof (e.g. rooflights), chimneys, flues and soil pipes, painting the outside, so there these need planning permission too. (Caldon Canal Conservation Area; Hanley Park Conservation Area)
What needs planning permission in Caldon Canal
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: 2 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: 27% 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 = 205)
Walls
Homes
Share
Solid wall (brick or stone), no insulation
116
56.6%
Cavity wall, insulated (as built or unspecified)
27
13.2%
Other or not known
20
9.8%
Modern wall (U-value from the design)
16
7.8%
Solid wall, internal insulation
10
4.9%
Solid wall, insulated
8
3.9%
Cavity wall, unfilled
4
2.0%
Solid wall, external insulation
2
1.0%
Cavity wall, partly insulated
1
0.5%
Timber frame
1
0.5%
Heating
Homes
Share
Gas boiler
166
81.0%
Electric (storage heaters, panels, boiler)
36
17.6%
LPG
2
1.0%
Heat pump
1
0.5%
Loft / roof insulation
Homes
Share
No insulation
42
20.5%
Under 200 mm
29
14.1%
200 mm or more
56
27.3%
Insulated (depth not recorded)
10
4.9%
Flat or other home above
34
16.6%
Other
34
16.6%
Windows
Homes
Share
Double glazed
199
97.1%
Single glazed
5
2.4%
Triple glazed
1
0.5%
BCDE
Energy rating: B 40 (19.5%) · C 48 (23.4%) · D 86 (42.0%) · E 29 (14.1%) · F 2 (1.0%). Houses and bungalows: 73% of the homes; solar panels on 1.5% of the certificates. Most common build period on the certificates: 1900-1929. Designated: 15 December 2022.
Compared with Stoke-on-Trent and England
Share of homes
Caldon Canal
All 22 areas in Stoke-on-Trent
England
Solid walls, no insulation
56.6%
41.6%
48.7%
Gas boiler
81.0%
68.0%
66.4%
Rated D–G
57.1%
—
56.5%
Caveats
Certificates describe a home when it was assessed; 55% of these are from 2020 or later (latest 22 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 Stoke-on-Trent if in doubt.
Boundary: Stoke-on-Trent City Council via planning.data.gov.uk (entity 44014432, reference 21, 55.8 ha); the council's appraisal or map. Homes are placed by the coordinates of their UPRN (OS Open UPRN); addresses are not shown.