TW7 · Isleworth
TW7 covers Isleworth — the Isleworth Riverside and Spring Grove conservation areas and Osterley Park's edge. Period stock supports extensions and lofts; inside the conservation areas a full application is expected, with the Residential Extension Guidelines SPD setting the design bar.
Location data: postcodes.io · Constraints: planning.data.gov.uk (borough-level) · Open Government Licence
Constraint context · Hounslow
Real · planning.data.gov.ukHounslow has 34 designated conservation areas and 0 Article 4 areas. A district is too coarse to say which apply to your house — postcode districts span many streets and TW7 crosses 2 boroughs. Enter a full postcode below for the point-level check, or read the full borough picture on the Hounslow planning guide.
Pinpoint your street
More of Hounslow
Planning Permission Checker 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.