Solar panels, heat pumps and insulation in No.11 Ormesby St Margaret conservation area
In the No.11 Ormesby St Margaret conservation area (Great Yarmouth), 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 Great Yarmouth covers this area, but the published data does not say which rights it removes — check the direction before any work. The area has 7 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. 104 homes inside the boundary have an energy certificate: 45.2% are solid-wall homes with no wall insulation, 2.9% heat with a gas boiler and 69.2% are rated D–G; 17 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
104homes with an energy certificate
45.2%solid walls, no insulation
2.9%heated by a gas boiler
17heat pumps
Article 4: An Article 4 direction published by Great Yarmouth covers this area, but the published data does not say which rights it removes — check the direction before any work. (Article 4 Direction - Houses in Multiple Occupation Great Yarmouth)
What needs planning permission in No.11 Ormesby St Margaret
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: 7 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: 4% 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 = 104)
Walls
Homes
Share
Solid wall (brick or stone), no insulation
47
45.2%
Modern wall (U-value from the design)
23
22.1%
Cavity wall, insulated (as built or unspecified)
17
16.3%
Cavity wall, unfilled
7
6.7%
Cavity wall, filled
4
3.8%
Solid wall, insulated
2
1.9%
Solid wall, internal insulation
2
1.9%
Cavity wall, partly insulated
1
1.0%
Solid wall, external insulation
1
1.0%
Heating
Homes
Share
Oil
49
47.1%
Heat pump
17
16.3%
LPG
16
15.4%
Electric (storage heaters, panels, boiler)
15
14.4%
Gas boiler
3
2.9%
Solid fuel (wood, coal)
3
2.9%
Communal heating
1
1.0%
Loft / roof insulation
Homes
Share
No insulation
9
8.7%
Under 200 mm
26
25.0%
200 mm or more
35
33.7%
Insulated (depth not recorded)
9
8.7%
Flat or other home above
2
1.9%
Other
23
22.1%
Windows
Homes
Share
Double glazed
99
95.2%
Single glazed
3
2.9%
Secondary glazing
2
1.9%
BCDEF
Energy rating: A 1 (1.0%) · B 13 (12.5%) · C 18 (17.3%) · D 20 (19.2%) · E 31 (29.8%) · F 15 (14.4%) · G 6 (5.8%). Houses and bungalows: 96% of the homes; solar panels on 1.0% of the certificates. Most common build period on the certificates: before 1900. Designated: 27 May 1983.
Compared with Great Yarmouth and England
Share of homes
No.11 Ormesby St Margaret
All 23 areas in Great Yarmouth
England
Solid walls, no insulation
45.2%
54.8%
48.7%
Gas boiler
2.9%
49.8%
66.4%
Rated D–G
69.2%
—
56.5%
Caveats
Certificates describe a home when it was assessed; 47% of these are from 2020 or later (latest 8 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 Great Yarmouth if in doubt.
Boundary: Great Yarmouth Borough Council via planning.data.gov.uk (entity 44009693, reference CA11, 27.0 ha). Homes are placed by the coordinates of their UPRN (OS Open UPRN); addresses are not shown.