Flats in Liverpool
The 2021 Census found 17.2% of Liverpool households living in a purpose-built flat, close to England's 17.1%, and another 3.9% in a flat inside a converted or shared house (ONS Census 2021). Together that is 21.1% of households, about one in five (our arithmetic).
They are not spread evenly. In Central ward, 58.4% of households lived in a purpose-built flat, and in Riverside, 52.3%; the Census used the wards as they stood before the 2023 boundary changes. In those two wards the flat is the usual home rather than the exception, and the questions on this page are the first ones anyone asks about solar.
Flats also start from a better place on paper. Of Liverpool's flats with an Energy Performance Certificate, 75.3% reach band C or above, against 47.8% of terraced houses (ONS). For many flat owners, then, the case for panels rests on the electricity they could supply rather than on rescuing a poor EPC band.
A flat in a converted house is a different case again. It sits inside the city's older stock, where 30.9% of properties predate 1919 (VOA 2026), with the slate roofs, conservation areas and occasional listings that go with it; the page on Georgian and Victorian homes covers that ground.
Who has to agree
In a typical leasehold flat, the leaseholder owns the inside of the flat and the freeholder keeps the structure: the roof, the outside walls and the foundations. Day-to-day control may sit with a management company, a residents' company or a managing agent acting for the freeholder. Whoever it is, the lease is the document that settles three things that matter for solar: which parts of the building are yours, what alterations need consent, and how the costs of the shared parts are split through the service charge.
So the first step for a leaseholder is not a quote but a copy of the lease and a conversation with whoever manages the building. Expect any consent to be formal and in writing, often as a licence for alterations, and expect the other leaseholders' interests to count: a roof is shared property, and panels change how it is maintained, insured and eventually replaced. On a newer block, ask too whether fixings through the roof would affect any warranty on the roof covering. Before raising it at a residents' meeting, gather what the managing agent is likely to ask for: roof plans if they exist, the age of the roof covering, and a rough idea of how many panels would fit.
Where the leaseholders of a converted house jointly own the freehold, the decision is theirs collectively, which can make agreement quicker or slower depending on the neighbours. Renters in flats have one more layer, the landlord's own consent; the guide to renting and solar covers that.
The 2026 planning rules for blocks
Solar on homes in England is governed by Part 14 of the General Permitted Development Order. From 27 August 2026, Class A was rewritten by SI 2026/896, which splits its conditions into one set for houses and a separate set for blocks of flats (SI 2026/896; Planning Portal). A block that meets its conditions can have panels without a planning application, unless an Article 4 direction or another restriction applies.
One exclusion is absolute. Permitted development does not apply to equipment on a block of flats that is a listed building, or on a building within its grounds. Historic England counts 1,527 listed entries in Liverpool (Heritage Counts 2026); if your block is one of them, any panels need listed building consent and, where relevant, planning permission.
Two practical points follow. First, the amending order does not itself define a block of flats, so if your flat is in a house that has been split up, ask the council which set of conditions it applies before relying on either. Second, projects that met the old rules but not the new ones can still use the old rules until 26 August 2027, according to the Planning Portal. An installer quoting for a block should say in writing which conditions the design meets. The planning page sets out the house limits and how to get a lawful development certificate if you want a formal answer.
Conservation areas and Article 4
Liverpool has 36 conservation areas, covering 9% of the city and about 19,000 of its properties (Liverpool City Council). According to the council, Article 4 directions cover most of them and bring alterations to the roof, including roof coverings, under planning control, along with windows, doors and cladding (Article 4 directions). In Kensington Fields, Knotty Ash, Toxteth Park and the Avenues, the directions apply only to elevations that face a highway.
The council's page does not mention solar panels, and it is written with houses in mind. If your block or converted house is in a conservation area, ask the planning team how the direction treats panels at that address before anything is commissioned. A roof slope or flat roof hidden from the street is likely to be the easier conversation, but only the council can give the answer.
What one flat can do on its own
For most flat owners, the realistic solo option is a plug-in kit. From 27 August 2026, kits with a rated output of up to 800 W that plug into an ordinary socket and meet the government's interim product specification can be used legally (SI 2026/848). Fixing one to a block is permitted development, except where any part of it would be on a wooden wall, balcony or enclosure, or on part of the block's exterior that is clad in timber. The Planning Portal says that exclusion is there to reduce fire risk, and a managing agent is likely to look at any balcony kit through the same lens.
The lease matters as much as the planning rule. A balcony may be part of your flat or a common part, and leases often restrict what can be fixed to rails, walls or windows. Ask the managing agent before buying. A private roof terrace is no different: the lease will say whether anything can be placed or fixed on it. A kit hung on a balcony rail sits close to vertical, and this guide has no PVGIS figures for that position, so treat any output claim with care; the plug-in solar guide shows the 35° and flat figures for each direction and explains the gap.
Panels on the block's roof
A shared system on the roof of a block often feeds the landlord's supply: the lighting in corridors and stairwells, lifts, door entry and any pumps. That electricity is paid for through the service charge, so every leaseholder has a stake in it even though no flat is wired to the panels. Supplying individual flats is possible but more involved, because each flat has its own meter and supplier, and the arrangement needs specialist design. Any export tariff for a communal system sits with whoever holds the landlord supply; the guide to export payments explains the rules.
Where a block has a flat roof, the layout of the panels is a design choice. PVGIS gives these figures for central Liverpool:
| Layout | kWh per kW a year | Against lying flat |
|---|---|---|
| Lying flat | 799 | baseline |
| Tilted south at 10° | 871 | +9% |
| Tilted south at 20° | 924 | +16% |
| Tilted south at 30° | 957 | +20% |
| Tilted south at 40° | 968 | +21% |
| Tilted east at 10° | 792 | -1% |
| Tilted west at 10° | 798 | about the same |
Tilting panels just 10° towards the south lifts output from 799 to 871 kWh per kW, about 9% (our arithmetic), and helps rain carry the dirt off. Steeper tilts add more per panel, but each row then casts a longer shadow in winter, so the rows have to sit further apart and fewer fit on the roof. Low east and west tilts average about 795 kWh per kW, much the same as lying flat, but the rows can be packed more closely. Which layout gives the most from a given roof is a question for the designer, along with a structural check on the roof's capacity and wind loads.
Size brings in the grid. A block array is often bigger than a house system, and anything above the simple G98 limit (3.68 kW on a single-phase supply) goes through the G99 process, where SP Energy Networks has to assess and agree the connection before it is switched on. Build that into the timetable; the guide to SP Energy Networks and your panels explains both routes.
Ask any firm quoting for a block for a yield estimate in kWh by layout, and check it against the table. The cost page shows what North West homes paid per kW for systems up to 10 kW; a large block array is priced on its own terms. The checklist on finding an installer applies to a managing agent as much as to a homeowner.