Solar Canopy Planning Permission — UK Guide

Do you need planning permission for a solar canopy?

Most commercial solar carport installations qualify as Permitted Development (PD) under Class A of Schedule 2 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended), eliminating the need for a full planning application. PD applies when all of the following criteria are met:

For car park canopies, the 4-metre height limit is the most commonly binding constraint — mono-pitch and T-frame systems typically sit within this limit, while taller cantilever or high-clearance designs for HGV access may require full planning. We flag this at design stage and propose a compliant solution or manage the LPA application if it cannot be avoided.

When full planning permission is required

Full planning permission is typically required in these scenarios:

• Conservation areas and listed buildings. The curtilage of a listed building and most conservation area car parks require a full application or, in some cases, Listed Building Consent. We work with specialist heritage planning consultants in these cases.
• Height over 4 metres. HGV-access canopies, high-clearance cantilevers, or sites with ground-level constraints that require elevated structures. Full planning is standard in these cases.
• Proximity to boundaries. Canopies positioned close to site boundaries may trigger neighbour notification requirements that take the project out of PD.
• Sites above 1 MWp total capacity. Large multi-phase canopy programmes exceeding 1 MWp on a single site require consent for the whole site even if individual phases are PD-compliant.

Our planning process

1. 1. Pre-application planning review. We assess the site against the PD criteria at proposal stage. If PD applies, we confirm this in writing and proceed. If it does not, we advise on the fastest consent route before contract stage.
2. 2. Permitted Development notification (where required). Some LPAs require a Prior Approval application even for PD solar. We submit this on your behalf — typical determination 28 days, fee £234.
3. 3. Full planning application. Where required, our planning consultant manages the LPA submission including site plans, design and access statement, structural drawings, and heritage or ecology reports where needed. Our approval rate exceeds 92%.
4. 4. Planning conditions. We manage and discharge all planning conditions (materials approval, landscaping, archaeological watching brief where imposed) as part of our principal contract delivery.

The 20% rule for solar panels — does it apply to canopies?

The "20% rule" historically limited building-integrated solar panel coverage to 20% of the external building surface area under permitted development rights. This restriction does NOT apply to freestanding solar canopy structures in car parks. Car park solar canopies operate under the freestanding structure provisions of the GPDO — not the building-mounted provisions — so the 20% surface-area limit is irrelevant. The operative constraint for canopies is height (4 metres) and site capacity (1 MWp).

Additional compliance requirements