Solar panels, heat pumps and insulation in Mount Pleasant conservation area
In the Mount Pleasant conservation area (Liverpool), 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 Liverpool covers this area and removes permitted development rights for alterations to the roof (e.g. rooflights), so there these need planning permission too. The area has 55 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. 170 homes inside the boundary have an energy certificate: 31.8% are solid-wall homes with no wall insulation, 38.2% heat with a gas boiler and 33.5% 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
170homes with an energy certificate
31.8%solid walls, no insulation
38.2%heated by a gas boiler
0heat pumps
Article 4: An Article 4 direction published by Liverpool covers this area and removes permitted development rights for alterations to the roof (e.g. rooflights), so there these need planning permission too. (8 Maryland Street, Liverpool, L1 9DE; Everyman Theatre, 3- 11 Hope Street, Liverpool , L1; Hardman House & Haigh Building, Hardman Street/Maryland Street, Liverpool, L1 9AS; Hardman House & Haigh Building, Hardman Street/Maryland Street, Liverpool, L1 9SA; Josephine Butler House, Hope Street/Myrtle Street, Liverpool , L1 9BP; Land at Brownlow Hill/Duckinfield Street, Liverpool, L3)
What needs planning permission in Mount Pleasant
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)
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)
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)
Replacement windows and doors of similar appearance
No permission needed (permitted development)
Part 1 Class A, A.3(a)
Listed buildings: 55 in the area (grade I: 2, 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: 94% 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 = 170)
Walls
Homes
Share
Solid wall (brick or stone), no insulation
54
31.8%
Modern wall (U-value from the design)
34
20.0%
Solid wall, insulated
31
18.2%
Other or not known
28
16.5%
Solid wall, internal insulation
11
6.5%
Solid wall, partly insulated
6
3.5%
Timber frame
6
3.5%
Heating
Homes
Share
Electric (storage heaters, panels, boiler)
105
61.8%
Gas boiler
65
38.2%
Loft / roof insulation
Homes
Share
No insulation
12
7.1%
Under 200 mm
6
3.5%
200 mm or more
12
7.1%
Insulated (depth not recorded)
19
11.2%
Flat or other home above
113
66.5%
Other
8
4.7%
Windows
Homes
Share
Double glazed
119
70.0%
Single glazed
42
24.7%
Secondary glazing
8
4.7%
Triple glazed
1
0.6%
BCDE
Energy rating: B 35 (20.6%) · C 78 (45.9%) · D 41 (24.1%) · E 15 (8.8%) · F 1 (0.6%). Houses and bungalows: 6% of the homes; solar panels on 0.0% of the certificates. Most common build period on the certificates: before 1900. Designated: 17 November 1976.
Compared with Liverpool and England
Share of homes
Mount Pleasant
All 37 areas in Liverpool
England
Solid walls, no insulation
31.8%
41.6%
48.7%
Gas boiler
38.2%
53.3%
66.4%
Rated D–G
33.5%
—
56.5%
Caveats
Certificates describe a home when it was assessed; 59% of these are from 2020 or later (latest 15 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 Liverpool if in doubt.
Boundary: Liverpool City Council via planning.data.gov.uk (entity 44014313, reference CA018, 17.3 ha). Homes are placed by the coordinates of their UPRN (OS Open UPRN); addresses are not shown.