Croydon has 21 designated conservation areas, and the single most common reason we hear for not enquiring about solar is “we’re in one”. In most cases that reasoning is out of date. Here is what the rules say now, and where the genuine exceptions are.
What changed in December 2023
Roof-mounted solar on a house is permitted development in England — no planning application — subject to conditions: the panels must not project more than 200 mm beyond the roof slope, must not be higher than the highest part of the roof, and must be removed when no longer needed.
Before December 2023 the conservation-area rule was widely read as a blanket restriction on street-facing roof slopes. The amended rule is narrower: in a conservation area, the exclusion applies to panels fixed on a wall fronting a highway. Roof slopes, including front roof slopes, are back within permitted development. Flat-roof installations need prior approval. Listed buildings, as ever, need listed building consent.
Croydon’s real exception: Article 4 Directions
An Article 4 Direction lets a council remove permitted development rights in a defined area. Croydon has done that in three of its conservation areas — Chatsworth Road, The Waldrons and Kenley Aerodrome. If your home is in one of those, roof-mounted solar needs a planning application first. In the other eighteen conservation areas the standard conditions above apply. If you are unsure which applies to your street, the council’s conservation-area pages list each area and note where an Article 4 is in force.
The bigger Croydon question is usually the building, not the planning
Croydon is London’s most populous borough — 390,719 residents and 152,946 households at Census 2021 — and its housing is flat-heavy. About 41% of dwellings are flats, with semi-detached houses at 24%, terraced at 23% and detached at 12%. Owner-occupation stood at 54.7%.
For a house, once planning is settled the questions are the ordinary ones: orientation, pitch, shading, and what the roof will generate. For a flat, the first question is whether the roof is yours to use at all: a leaseholder generally needs the freeholder’s consent, and a shared roof rarely divides neatly. It is honest to say that for a good share of Croydon’s flats the answer is no, and we would rather say so at the survey than after a deposit.
What a Croydon roof is estimated to generate
Our solar panels Croydon page publishes a generation estimate for the town itself, run in the European Commission’s PVGIS 5.3 tool with the parameters shown, alongside the Energy Saving Trust’s national cost anchor — about £7,600 for a typical 4.5 kWp system (updated 27 August 2026) — and the VAT position: 0% on residential installs until 31 March 2027, 5% after. The savings calculator lets you run your own usage against that estimate before you talk to anyone.
Croydon is not starting from zero
The council has a formally approved Climate Action Plan 2030, following its July 2019 climate emergency declaration. Croydon Community Energy, the borough’s first renewable-energy co-operative, raised £120,000 in its 2025 community share offer to fund 711 solar panels across three community buildings. Two Croydon schools are among the 250 nationally getting rooftop solar under Great British Energy’s £100 million programme. The borough’s electricity is distributed by UK Power Networks, the operator that receives the G98 or G99 notification when a domestic system is connected — a step your installer handles, and one worth confirming was done.
Sources: Croydon Council, Conservation areas and Article 4 Directions; legislation.gov.uk, Town and Country Planning (General Permitted Development) (England) Order, Part 14 (as amended December 2023); ONS Census 2021, Croydon; Croydon Strategic Housing Market Assessment; Croydon Council, Sustainability in Croydon; Inside Croydon (13 August 2025; 20 November 2025); UK Power Networks; Energy Saving Trust (updated 27 August 2026); HMRC VAT Notice 708/6.