Solar panels, heat pumps and insulation in Kelham Island and Neepsend conservation area
In the Kelham Island and Neepsend conservation area (Sheffield), 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 20 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. 1,591 homes inside the boundary have an energy certificate: 4.7% are solid-wall homes with no wall insulation, 12.4% heat with a gas boiler and 9.6% are rated D–G; 0 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
1,591homes with an energy certificate
4.7%solid walls, no insulation
12.4%heated by a gas boiler
0heat pumps
Article 4: Sheffield does not publish Article 4 areas on planning.data.gov.uk — check with the council.
What needs planning permission in Kelham Island and Neepsend
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: 20 in the area (grade I: 0, II*: 4). 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: 89% 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 = 1,591)
Walls
Homes
Share
Modern wall (U-value from the design)
701
44.1%
Cavity wall, insulated (as built or unspecified)
450
28.3%
Other or not known
245
15.4%
Solid wall, insulated
79
5.0%
Solid wall (brick or stone), no insulation
74
4.7%
Timber frame
21
1.3%
Solid wall, internal insulation
12
0.8%
Cavity wall, filled
7
0.4%
Cavity wall, unfilled
2
0.1%
Heating
Homes
Share
Electric (storage heaters, panels, boiler)
1,327
83.4%
Gas boiler
198
12.4%
Communal heating
65
4.1%
LPG
1
0.1%
Loft / roof insulation
Homes
Share
No insulation
15
0.9%
Under 200 mm
8
0.5%
200 mm or more
24
1.5%
Insulated (depth not recorded)
195
12.3%
Flat or other home above
977
61.4%
Other
372
23.4%
Windows
Homes
Share
Double glazed
1,433
90.1%
Triple glazed
82
5.2%
Single glazed
64
4.0%
Secondary glazing
12
0.8%
BCD
Energy rating: A 1 (0.1%) · B 613 (38.5%) · C 824 (51.8%) · D 139 (8.7%) · E 14 (0.9%). Houses and bungalows: 11% of the homes; solar panels on 1.2% of the certificates. Most common build period on the certificates: 2003-2006.
Compared with Sheffield and England
Share of homes
Kelham Island and Neepsend
All 32 areas in Sheffield
England
Solid walls, no insulation
4.7%
28.0%
48.7%
Gas boiler
12.4%
47.6%
66.4%
Rated D–G
9.6%
—
56.5%
Caveats
Certificates describe a home when it was assessed; 50% 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 Sheffield if in doubt.
Boundary: Sheffield City Council via planning.data.gov.uk (entity 44006583, reference 5441, 33.4 ha). Homes are placed by the coordinates of their UPRN (OS Open UPRN); addresses are not shown.