Solar panels, heat pumps and insulation in No.4 King Street conservation area
In the No.4 King Street 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 43 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. 472 homes inside the boundary have an energy certificate: 48.1% are solid-wall homes with no wall insulation, 45.3% heat with a gas boiler and 48.3% 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
472homes with an energy certificate
48.1%solid walls, no insulation
45.3%heated by a gas boiler
1heat 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; Article 4 Direction Great Yarmouth)
What needs planning permission in No.4 King Street
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: 43 in the area (grade I: 1, 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: 76% 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 = 472)
Walls
Homes
Share
Solid wall (brick or stone), no insulation
227
48.1%
Cavity wall, insulated (as built or unspecified)
89
18.9%
Solid wall, internal insulation
71
15.0%
Modern wall (U-value from the design)
29
6.1%
Cavity wall, filled
12
2.5%
Timber frame
11
2.3%
Cavity wall, unfilled
10
2.1%
Solid wall, external insulation
10
2.1%
Cavity wall, partly insulated
5
1.1%
Solid wall, insulated
5
1.1%
Cavity wall, internal or external insulation
1
0.2%
Other or not known
1
0.2%
Solid wall, partly insulated
1
0.2%
Heating
Homes
Share
Electric (storage heaters, panels, boiler)
245
51.9%
Gas boiler
214
45.3%
Communal heating
9
1.9%
Solid fuel (wood, coal)
3
0.6%
Heat pump
1
0.2%
Loft / roof insulation
Homes
Share
No insulation
62
13.1%
Under 200 mm
60
12.7%
200 mm or more
108
22.9%
Insulated (depth not recorded)
38
8.1%
Flat or other home above
191
40.5%
Other
13
2.8%
Windows
Homes
Share
Double glazed
400
84.7%
Single glazed
60
12.7%
Secondary glazing
12
2.5%
CDE
Energy rating: B 21 (4.4%) · C 223 (47.2%) · D 140 (29.7%) · E 65 (13.8%) · F 10 (2.1%) · G 13 (2.8%). Houses and bungalows: 24% of the homes; solar panels on 0.0% of the certificates. Most common build period on the certificates: before 1900. Designated: 25 July 1975.
Compared with Great Yarmouth and England
Share of homes
No.4 King Street
All 23 areas in Great Yarmouth
England
Solid walls, no insulation
48.1%
54.8%
48.7%
Gas boiler
45.3%
49.8%
66.4%
Rated D–G
48.3%
—
56.5%
Caveats
Certificates describe a home when it was assessed; 59% of these are from 2020 or later (latest 21 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 44009684, reference CA04, 11.4 ha). Homes are placed by the coordinates of their UPRN (OS Open UPRN); addresses are not shown.