Terms of use & referral disclosure
These terms govern your use of Planning Permission Checker, a free planning-intelligence tool for London property, operated by Hampstead Renovations Limited (registered in England & Wales No. 16838595, Unit 3 Palace Court, 250 Finchley Road, London NW3 6DN). Nothing is sold through this site. By using it you accept these terms.
What the service is
A free research tool. You enter a postcode or an address; the site tests that location against official planning geometry (conservation areas and Article 4 directions from planning.data.gov.uk), sets out the likely planning route for common project types, and puts sourced figures next to it — HM Land Registry sold prices, UK House Price Index borough averages and indicative build-cost ranges given as low, expected and high. Every figure names its source. Where a dataset does not cover your property, or a boundary runs close to it, the site says so instead of guessing.
What it is not
It is not planning advice and it is not a planning decision — local planning authorities decide applications, and their own register and mapping remain the definitive record. It is not a valuation, not a building survey, not a structural or legal opinion, and not a quotation for construction work. A result here never establishes that a scheme is permitted development, lawful or approvable. Cost ranges are indicative and move with survey, specification, structure, access, party wall matters, VAT and professional fees.
Referrals to independent practices
Planning Permission Checker carries out no professional work itself. When you want the job actually done, the site refers you to one of two named, independently regulated practices — and you choose which:
- Hampstead Architecture and Planning — ARB-registered architects, company No. 17320100. Design and consent work: drawings, planning applications, prior approval, lawful development certificates, appeals, conservation-area and listed building consent applications, and Licence to Alter packages for leasehold flats.
- Hampstead Chartered Surveyors & Building Consultancy — RICS-regulated chartered surveying practice (RICS Firm Reg. 923064), trading through Hampstead Building Consultancy Limited, company No. 17085122. Condition, risk and statutory neighbour work: building surveys and defect diagnosis, party wall matters and awards, technical due diligence, dilapidations, leasehold and Section 20 major works, fire safety and EWS1 appraisal.
Some jobs need both, and we will say so: a rear extension is designed and applied for by the architects, while the notices your neighbours receive under the Party Wall etc. Act 1996 are the chartered surveyor's work.
Each practice is a separate company that contracts with you directly, on its own terms of engagement, and quotes its own fees. We publish no fees for their work and we are not a party to any agreement you reach with them. The advice, drawings, survey, application or award are theirs — as are the professional obligations, insurance and complaints procedure that go with them. Hampstead Renovations Limited operates this website and nothing else: it is regulated by neither RICS nor the ARB, provides no professional services and receives no enquiries. For transparency, the site operator and both practices are registered at the same address; each practice is independently regulated, and you are of course free to take your enquiry to any professional you like.
Your enquiry goes only to the practice you choose, and only where you have given consent. We do not pass your details to builders, lead brokers or other third parties — see the privacy notice.
Reports issued under the retired paid service
Planning Permission Checker previously sold per-property reports. Those products were withdrawn in August 2026 and nothing is sold here now. Report links already issued to earlier customers continue to resolve; any question about a past order can go to contact@planningpermissionchecker.co.uk.
Using the site
Use it for your own property research, and quote short extracts with a link back. Bulk automated extraction, harvesting the constraint data as a dataset, or republishing pages wholesale is not permitted. Page text, structure and the derived views built from public data belong to us or are licensed to us; the underlying public datasets stay under their own licences, below.
Data, sources and availability
Planning, price and geography data comes from third-party public sources — planning.data.gov.uk, HM Land Registry Price Paid Data and the UK House Price Index, postcodes.io and Ordnance Survey — which can be incomplete, delayed or revised without notice. Contains public sector information licensed under the Open Government Licence v3.0; UPRN © Ordnance Survey. The site is provided as it stands: we do not guarantee uninterrupted availability, and we cannot guarantee that every dataset is current at the moment you read it.
Liability
Verify anything material with the relevant council and a qualified professional before you spend money or commit to a purchase, a design or an application. To the extent the law allows, we accept no liability for decisions taken on the basis of the free intelligence published here, or for the acts or omissions of a practice you go on to instruct. Nothing in these terms limits liability for death or personal injury caused by negligence, for fraud, or for anything else that cannot lawfully be excluded, and your statutory rights as a consumer are unaffected.
Changes & governing law
We may update these terms as the service changes; the version on this page is the one that applies to your use of it. These terms, and any dispute arising out of them, are governed by the law of England and Wales, and the courts of England and Wales have jurisdiction. Questions: contact@planningpermissionchecker.co.uk.