Solar panels in Brighton and Hove: terraces, conservation areas and the flat-roof rule

Brighton and Hove is the biggest roofscape on this stretch of coast and the most complicated one. Seventeen road miles east of our Washington base along the A283 and A27, it is dense, steep in places, listed in others and windy everywhere. These are the four things that decide a solar design there.

The terraces

Much of the city’s housing is Regency and Victorian terrace, three and four storeys, with slate at a shallow pitch and parapets or bay projections exactly where an array would like to sit. On those streets the front slope is rarely the answer. The rear slope, a two-storey back addition or a flat roof usually does the work, and the scaffold plan matters as much as the panel count.

The conservation areas, and the rule that actually applies

Brighton and Hove has more than thirty conservation areas, and the council’s own conservation pages carry guidance on solar panels inside them. The assumption people arrive with is that panels in a conservation area need planning permission. Under the national permitted-development rules, panels on a roof slope of a house usually do not, even on a street-facing slope.

What the regulations exclude in a conservation area is a panel on a wall, balcony or roof enclosure fronting a highway. And there is a second rule that matters more in Brighton than almost anywhere else: since December 2023 a flat-roof array on that kind of designated land needs prior approval from the council before it goes up. Given how much of the city’s solar ends up on flat roofs, that is the rule to know. A listed house, and the Regency squares hold a great many, sits outside the permitted-development class entirely and needs listed building consent. An Article 4 direction can remove roof rights in a specific area, so we check the address against the council’s maps before the survey and put the answer in writing.

The weather

The city faces the Channel. Wind loading on an exposed roof is a design input, not a footnote, and salt in the air within a mile of the front corrodes anything that was not specified for it. We specify marine-grade fixings and clamps as standard on coastal jobs rather than as an upgrade, and on a flat roof a ballasted system has to be weighted for the exposure of that roof, not for a catalogue average.

The council

Brighton and Hove City Council runs a Net Zero programme with a citywide energy study behind it and a strategic energy partnership under exploration, and its pages on low-carbon energy for homes are a sensible place to start reading. None of that changes the physics of your roof, but it does mean the planning department has seen a great deal of solar and knows the rules above as well as we do.

When a flat roof is the honest answer

Often. A ballasted flat-roof array on a back addition or a garage can out-produce a shaded front slope, needs no holes in the roof covering, and keeps the street elevation untouched, which is what the conservation officer wants anyway. It needs the prior-approval step on designated land, which we handle, and it needs a roof that can take the ballast, which the survey checks.

Our page on solar panels in Brighton goes through the city’s roofs, the planning position, the network operator and what we take into account before a quote. The survey is free, and in Brighton it is the only way to price a job honestly.