Solar panels, heat pumps and insulation in Portchester Road conservation area
In the Portchester Road conservation area (Bournemouth, Christchurch and Poole), 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. 368 homes inside the boundary have an energy certificate: 0.8% are solid-wall homes with no wall insulation, 81.2% heat with a gas boiler and 44.3% 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
368homes with an energy certificate
0.8%solid walls, no insulation
81.2%heated by a gas boiler
0heat pumps
Article 4: Bournemouth, Christchurch and Poole does not publish Article 4 areas on planning.data.gov.uk — check with the council.
What needs planning permission in Portchester Road
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: none recorded inside the boundary; on a listed building, solar panels and heat pumps are not permitted development and need listed building consent.
Flats: 92% 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 = 368)
Walls
Homes
Share
Cavity wall, unfilled
154
41.8%
Cavity wall, filled
74
20.1%
Timber frame
66
17.9%
Cavity wall, insulated (as built or unspecified)
52
14.1%
Modern wall (U-value from the design)
13
3.5%
Cavity wall, partly insulated
3
0.8%
Solid wall (brick or stone), no insulation
3
0.8%
Cavity wall, internal or external insulation
1
0.3%
Solid wall, insulated
1
0.3%
Solid wall, internal insulation
1
0.3%
Heating
Homes
Share
Gas boiler
299
81.2%
Electric (storage heaters, panels, boiler)
45
12.2%
Communal heating
24
6.5%
Loft / roof insulation
Homes
Share
No insulation
34
9.2%
Under 200 mm
24
6.5%
200 mm or more
27
7.3%
Insulated (depth not recorded)
34
9.2%
Flat or other home above
236
64.1%
Other
13
3.5%
Windows
Homes
Share
Double glazed
326
88.6%
Single glazed
38
10.3%
Secondary glazing
3
0.8%
Triple glazed
1
0.3%
CDE
Energy rating: B 13 (3.5%) · C 192 (52.2%) · D 116 (31.5%) · E 39 (10.6%) · F 6 (1.6%) · G 2 (0.5%). Houses and bungalows: 8% of the homes; solar panels on 0.3% of the certificates. Most common build period on the certificates: 1900-1929. Designated: 11 May 1993.
Compared with Bournemouth, Christchurch and Poole and England
Share of homes
Portchester Road
All 47 areas in Bournemouth, Christchurch and Poole
England
Solid walls, no insulation
0.8%
6.4%
48.7%
Gas boiler
81.2%
63.6%
66.4%
Rated D–G
44.3%
—
56.5%
Caveats
Certificates describe a home when it was assessed; 54% 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 Bournemouth, Christchurch and Poole if in doubt.
Boundary: Bournemouth, Christchurch and Poole Council via planning.data.gov.uk (entity 44017465, reference PORT, 11.6 ha); the council's appraisal or map. Homes are placed by the coordinates of their UPRN (OS Open UPRN); addresses are not shown.