Do you need planning permission for plug-in solar?

For most households in England the answer is no, provided the installation stays inside the limits set by the Town and Country Planning (General Permitted Development) (England) (Amendment) Order 2026, SI 2026/896, made on 29 July 2026 and in force from 27 August 2026. Those limits are specific, and a balcony rail is not automatically inside them.

Two things to fix at the outset. First, this instrument is England only. Second, permitted development rights and permission from a landlord, freeholder or managing agent are entirely different questions, and satisfying one does nothing for the other.

Two classes, two sets of rules

The amendment works through the existing structure of Part 14 of the GPDO. Class A covers equipment mounted on a building, such as a wall, a roof or a balcony. Class B covers a stand-alone installation, which for plug-in solar usually means a ground-mounted frame in a garden or yard. Which class you are in depends on where the panel physically sits rather than on what you call it.

Class A: equipment on a building

On a dwellinghouse

The dimensional limits for a house are tight, and they are measured as projection beyond the surface you attach to:

• The equipment must not protrude more than 0.2 m beyond the plane of a wall where that wall abuts a highway.
• It must not protrude more than 0.4 m beyond the plane of any other wall.
• It must not protrude more than 0.2 m beyond the plane of a pitched roof slope.

The 0.2 m figure is the one to check before you buy a mounting kit. A tilted frame designed to angle a panel toward the sun can easily exceed 200 mm of standoff at its deepest point, and if the wall in question fronts a road, that puts the installation outside permitted development. Flush or near-flush mounting is what the drafting contemplates for those positions.

On a block of flats

Here the drafting takes a different approach. Rather than dimensions, it uses exclusions. The right does not apply:

• on a listed building
• on a wooden wall, balcony or enclosure, or on any part of the exterior of a block of flats which is clad in timber

The timber exclusion is a fire-safety provision and it is drawn widely. It catches a timber balcony balustrade on an otherwise masonry building, and it catches any part of the exterior of a timber-clad block. If your balcony rail is wooden, the permitted development right for that position is not available in England.

Conservation areas and World Heritage Sites

The additional restriction in a conservation area or World Heritage Site turns on which way the installation faces. The right is restricted where the equipment would be installed on a wall, or on a roof enclosure, fronting a highway. Rear elevations and positions not fronting a highway are treated more permissively.

“Fronting a highway” is a term with planning case law behind it and it is broader than “facing the front door”. A side elevation on a corner plot commonly fronts a highway. If you are in a designated area and the panel would be visible from a public road, treat that as a question for the planning authority rather than one you settle yourself.

Listed buildings

There is no permitted development right for this equipment on a listed building, under either class. That is a flat exclusion.

Separately and additionally, the listed building consent regime is untouched by this Order. Attaching anything to a listed building, or to a structure within its curtilage, may require listed building consent in its own right, and carrying out works that affect the character of a listed building without consent is a criminal offence rather than a planning irregularity. Neither the 2026 Order nor anything else in the plug-in solar framework changes that.

Class B: stand-alone and garden installations

A ground-mounted frame is judged on height, position and area. The height limits are:

• 1 m where the installation is within 5 m of a boundary and forward of the principal elevation.
• 2 m where it is within 5 m of a boundary generally.
• 2 m in a conservation area where the installation is near a highway.
• 4 m otherwise.

In addition, the maximum surface area of the equipment is 9 m², and the right is excluded on listed buildings and on scheduled monuments.

For plug-in solar these limits are generous. An 800 W array is typically two panels, well under 9 m², and a domestic ground frame is rarely more than about a metre and a half tall. The limit most likely to bite is the 1 m height where the frame sits in a front garden within 5 m of the boundary, which is a common position for a small ground mount and one where a tilted frame can breach a metre without looking like it does.

Timing, and the Article 4 caveat

The transitional provision

Development permitted before 27 August 2026 may continue until 26 August 2027. That is a one-year run-off protecting installations already carried out under the previous position. It is not a grace period during which the new limits can be ignored. If you install now, the new limits are the ones that apply to you.

Article 4 directions: an unconfirmed caveat

An Article 4 direction is a tool that lets a local planning authority withdraw specified permitted development rights across an area, commonly a conservation area or a historic estate. The ordinary principle under the GPDO is that where an Article 4 direction applies, the right it names is withdrawn and planning permission is required.

SI 2026/896 does not address Article 4 directions in relation to this class. We would expect the ordinary principle to apply, but we have not found that confirmed for this class specifically, and an existing direction drafted before the class existed may or may not be read as catching it. If you live in an area subject to an Article 4 direction, that is a question for your planning authority.

Outside England, the position is unresolved

SI 2026/896 extends to England only. We have not located an equivalent Scottish or Welsh instrument, so the planning position in those nations remains unclear. If you are outside England, ask your planning authority directly. We set out what is and is not known in plug-in solar in Scotland, Wales and Northern Ireland.

Planning permission and landlord permission are different things

The final point catches the most people. Permitted development means you do not need planning permission from the council. It says nothing about whether your lease, tenancy agreement or building management rules allow you to hang equipment on a balcony. The government’s own response tells renters, leaseholders and residents in managed buildings that they “should obtain any permissions that may be required before installing a device”.

Whether a balcony is demised to you or forms part of the common parts is usually decisive, and managing agents have legitimate concerns about fire safety, insurance and objects falling from height, particularly in buildings awaiting external wall remediation. That is covered in what leaseholders need to ask, and the practical consequences for flats are in our guide for flats.