Asked straight

No. Planning Permission Checker is an early-stage property intelligence and feasibility service. It does not submit applications or make planning judgments. It helps you see the clearest available picture of constraints, nearby decisions, likely risks and next steps before you instruct formal advice.

planning.data.gov.uk for structured constraints, OS Open UPRN and OS Places for the property spine, HM Land Registry Price Paid for comparables, and EPC Open Data for energy. Every field links to its source, and MHCLG Extract folds in as its rollout reaches the London boroughs. Nearby planning decisions are looked up by a chartered surveyor on the council's public register as part of the £295 Surveyor-Reviewed Pack.

A directional feasibility range only — not a valuation. It's based on street-cluster sold-price deltas; medium confidence by default and flagged where it drops to low. For a formal valuation, instruct a RICS surveyor.

All 33. We have coverage across all 33 London boroughs using official constraint datasets where available — conservation areas and Article 4 directions from official sources, live house prices and hand-written borough commentary — and the address check works on any London postcode. Nearby planning decisions (approved and refused applications) are looked up by a chartered surveyor on the council's public register as part of the £295 Surveyor-Reviewed Pack; and where a council's Article 4 geometry hasn't yet reached the national dataset, we say so and point you to the council's own register.

No. A deterministic rules engine runs against structured government datasets. The language model only writes the explanation; it does not invent constraints or make planning judgements. Every claim carries a confidence tier and a source citation.

Two ways. First, the constraint answers aren't generated by a language model — they come from checking your property's own coordinates against the official constraint geometry, and anything we can't check is stated as not checked rather than guessed. Second, we deliberately don't sell an "approval likelihood score": no algorithm can honestly score a London planning decision, so every figure is cited and confidence-labelled instead. When you want a professional judgement, the £295 and £495 tiers are fulfilled by an RICS-regulated chartered surveyor practice — not a bigger prompt.

No. The professional-help buttons take you to Hampstead Chartered Surveyors (RICS-regulated) to enquire directly, so you decide what to share with them. We don't pass your details to builders or third parties, and we do not sell address lookups or reports to brokers.

Usually, check the property risks first. A builder can price works, but they may not confirm Licence to Alter, listed building consent, planning permission, party wall, structural or building-control requirements. The free check helps you understand what to investigate before you spend money.