London, area by area
Siteline covers five inner-London boroughs in depth. Each borough guide carries the full list of conservation areas and Article 4 directions from official planning.data.gov.uk geometry, live house-price data and field notes from real projects; each district report drills into the local postcode area. For a specific house, run the address-level check — it tests your exact coordinates against the constraint boundaries.
Constraints, costs, precedent culture and FAQs for the whole borough.
Borough page →Constraints, costs, precedent culture and FAQs for the whole borough.
Borough page →Constraints, costs, precedent culture and FAQs for the whole borough.
Borough page →Constraints, costs, precedent culture and FAQs for the whole borough.
Borough page →Constraints, costs, precedent culture and FAQs for the whole borough.
Borough page →Straight to your address
Siteline provides planning and cost intelligence for early feasibility only. It is not legal, planning, valuation, architectural, structural, or surveying advice. All estimates are indicative and must be verified by qualified professionals before purchase, design, planning submission, or construction.
Cost estimates are indicative only — not a quotation. Final price depends on survey, specification, structure, access, party wall matters, VAT, professional fees, and contractor availability.
Planning outcomes are not guaranteed. Local planning authorities make final decisions.