Solar panels, heat pumps and insulation in Shoebury Garrison conservation area
In the Shoebury Garrison conservation area (Southend-on-Sea), 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 29 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. 283 homes inside the boundary have an energy certificate: 34.3% are solid-wall homes with no wall insulation, 98.9% heat with a gas boiler and 34.6% are rated D–G; 2 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
283homes with an energy certificate
34.3%solid walls, no insulation
98.9%heated by a gas boiler
2heat pumps
Article 4: Southend-on-Sea does not publish Article 4 areas on planning.data.gov.uk — check with the council.
What needs planning permission in Shoebury Garrison
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: 29 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: 39% 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 = 283)
Walls
Homes
Share
Cavity wall, insulated (as built or unspecified)
98
34.6%
Solid wall (brick or stone), no insulation
97
34.3%
Modern wall (U-value from the design)
26
9.2%
Solid wall, insulated
25
8.8%
Other or not known
15
5.3%
Timber frame
8
2.8%
Solid wall, internal insulation
7
2.5%
Cavity wall, filled
3
1.1%
Cavity wall, unfilled
2
0.7%
Cavity wall, internal or external insulation
1
0.4%
Cavity wall, partly insulated
1
0.4%
Heating
Homes
Share
Gas boiler
280
98.9%
Heat pump
2
0.7%
Electric (storage heaters, panels, boiler)
1
0.4%
Loft / roof insulation
Homes
Share
No insulation
22
7.8%
Under 200 mm
44
15.6%
200 mm or more
89
31.6%
Insulated (depth not recorded)
50
17.7%
Flat or other home above
52
18.4%
Other
25
8.9%
Windows
Homes
Share
Double glazed
196
69.3%
Single glazed
83
29.3%
Secondary glazing
4
1.4%
BCDE
Energy rating: B 30 (10.6%) · C 155 (54.8%) · D 63 (22.3%) · E 32 (11.3%) · F 2 (0.7%) · G 1 (0.4%). Houses and bungalows: 61% of the homes; solar panels on 0.4% of the certificates. Most common build period on the certificates: 2003-2006. Designated: 1 January 1981.
Compared with Southend-on-Sea and England
Share of homes
Shoebury Garrison
All 14 areas in Southend-on-Sea
England
Solid walls, no insulation
34.3%
67.0%
48.7%
Gas boiler
98.9%
82.8%
66.4%
Rated D–G
34.6%
—
56.5%
Caveats
Certificates describe a home when it was assessed; 47% of these are from 2020 or later (latest 29 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 Southend-on-Sea if in doubt.
Boundary: Southend-on-Sea Borough Council via planning.data.gov.uk (entity 44007969, reference 9, 26.4 ha). Homes are placed by the coordinates of their UPRN (OS Open UPRN); addresses are not shown.