The answer first
Roof panels on an unlisted timber-framed house are usually permitted development if they project no more than 0.2 m from the slope and stay below the highest point. Plug-in panels may never be fixed to timber walls, balconies, enclosures or timber-clad parts. In the conservation area, walls fronting a highway are excluded, and a listed house needs permission and consent.
Frame, infill and the parts panels would touch
A timber-framed house stands on a skeleton of posts, rails and braces, and the spaces between them are filled with plaster, brick or render. In the black-and-white style the timbers are dark and the infill pale, which is the picture most people carry of central Nantwich. The 2012 appraisal of the conservation area links that legacy to the rebuilding that followed the great fire, a story set out on the 1583 fire and Nantwich roofs.
For solar, three parts of such a building matter: the roof covering and the timbers beneath it, the walls, and anything fixed to the outside, such as a balcony or an enclosure. The planning rules treat each part differently, and the 2026 changes added a rule aimed squarely at timber. It also helps to know whether the frame is real. Some later buildings copy the pattern with boards fixed over brick or render, and that difference affects both the fixings and the planning position, so settle it before any firm draws up a layout.
Listed or not: the first thing to settle
The appraisal records 125 entries on the national list inside the conservation area, 3 of them Grade I, 7 Grade II* and the remaining 115 Grade II. Several entries cover a group, so the number of individual buildings is higher than the number of entries. The best known is Churche’s Mansion on Hospital Street, Grade I, which bears a carved date of 1577. Whether a given house is listed is a matter of record rather than looks, and the record is the National Heritage List for England, searchable by street and building name.
Where a house is listed, permitted development does not cover solar panels at all. Both planning permission and Listed Building Consent are required, whichever part of the building the panels would touch, and the consent can extend to the wiring and fixings inside. The process, the drawings and the questions worth asking the council are covered on listed buildings and solar. The rest of this page assumes an unlisted house unless it says otherwise.
Roof panels on an unlisted framed house
The renewables part of the 2015 permitted development order, in the form SI 2026/896 gave it from 27 August 2026, lets a house have roof panels without a planning application so long as they stick out no further than 0.2 m from the roof surface and stay lower than its highest part, chimneys aside. On a flat roof the projection limit is 0.6 m. On a steep roof the 0.2 m line is the condition most likely to bite, because a deep mounting rail on an uneven covering can push a layout over it.
Inside the conservation area, what the amended rules exclude for a house is walls, balconies and roof enclosures where they front a highway, rather than whole roof slopes. An unlisted house there can therefore usually take panels on a slope that faces the street, provided the height and projection limits are met. A flat roof inside the conservation area is handled differently: the council has to give a prior-approval decision before work begins. The full picture of what applies on which elevation is on the conservation-area page.
Walls that face the street
Walls are where timber framing and the planning rules meet most directly. In the conservation area, panels on a wall that fronts a highway fall outside permitted development for a house, so a street-facing gable or side wall would need a planning application. Away from the conservation area, and on walls that do not front a highway, the general wall allowance in Part 14 applies with its own conditions. The phrase “fronting a highway” can reach further than people expect, for example to a side elevation on a corner plot, so read the Order’s wording against the actual wall before anyone orders brackets.
Plug-in kits and the timber rule
The 2026 amendment brought plug-in solar, the small sets of panels that connect to the house wiring through an ordinary socket, within the solar PV rules. It also drew a firm line that matters here: such panels cannot be attached to a timber wall, a balcony, an enclosure or any timber-clad part of a building. On a framed house that rules out the exposed frame, any boarded gable and a wooden balcony rail, which are often exactly where a kit would otherwise be hung. A masonry wall away from the street, a flat roof within its limits, or a stand-alone position in the garden may still be open. The garden rules, including the 9 m² limit, are explained on ground-mounted panels, and the same restriction as it affects flats is covered on flats and solar.
Looking at the roof structure
A framed house built centuries ago may have had its roof rebuilt, re-covered or strengthened more than once, and the timbers in the loft may be younger or older than the front suggests. Rafters can have been notched for later services, purlins propped, or old timbers reused from elsewhere. None of that rules solar out, but it does mean the structure should be inspected rather than assumed. Panels and rails add dead weight, and wind lifting at the array adds a load the original carpenters never had in mind.
A thorough survey looks at the size and spacing of the rafters, any sag along the ridge or the slopes, signs of beetle or rot, the state of the battens and the fixings holding the covering. Handmade clay tiles and stone slates need particular care when roof hooks are fitted, and any that break should be replaced with matching material. If something looks doubtful, a structural engineer’s calculation is the usual next step. Ask every firm who will inspect the roof, what they will look for, and whether repairs found on the day are priced as a separate item.
Cables, the inverter and the meter
In a framed house the route from the roof down to the consumer unit can be awkward. Cables may have to pass through old plaster, run along beams or slip behind panelling, and every hole in an historic wall is a small alteration to the building. On an unlisted house that is mainly a practical matter; on a listed one, internal work can need consent too. Ask where the inverter, the isolators and any battery would be mounted, how the cables would run, and whether surface trunking or a route through the loft or an outbuilding is proposed. A clear drawing makes quotes easier to compare and, where needed, easier to show the council.
Article 4 and Nantwich
Among its proposals, the 2012 appraisal suggested an Article 4(2) direction for a named group of properties in the conservation area; it would take away permitted development rights, solar panels included, at key locations. Cheshire East’s Article 4(2) information page lists the conservation areas covered by such directions, and Nantwich is not among them. That page was last reviewed in 2018, so check the address with the council before relying on permitted development.
A sequence for a framed house
- Search the National Heritage List for the address, and note the grade if the house is listed.
- Check the boundary on the council’s conservation-area pages.
- Note which roof slopes and walls face a highway, and which parts of the outside are timber or timber-clad.
- Have the roof structure inspected before a layout is fixed.
- Ask for a drawing that shows the projection above the slope and the cable route.
- Apply for permission and consent where needed, then compare firms using the installer checks.
To see what a roof facing a given direction would produce, start with output on a Nantwich roof, and for short answers on the rest, see the FAQs. If something about your own house is unclear, put the question in writing: answers go out by email, and this guide neither surveys roofs nor prices work.