This proposal CONSTITUTES DEVELOPMENT within the meaning of Section 55 of the Town and Country Planning Act 1990, but by virtue of Article 3 and Schedule 2 of the Town and Country (General Permitted Development) (England) Order 2015 and any subsequent legislative amendments is of a class which is described as PERMITTED DEVELOPMENT and therefore planning permission IS NOT REQUIRED subject to the following conditions: (a) the materials used in any exterior work (other than materials used in the construction of a conservatory) shall be of a similar appearance to those used in the construction of the exterior of the existing dwellinghouse; (b) any upper-floor window located in a wall or roof slope forming a side elevation of the dwellinghouse shall be: (i) obscure-glazed, and (ii) non-opening unless the parts of the window which can be opened are more than 1.7 metres above the floor of the room in which the window is installed; and (c) where the enlarged part of the dwellinghouse has more than one storey, the roof pitch of the enlarged part shall, so far as practicable, be the same as the roof pitch of the original dwellinghouse.
If you alter your proposals in any way, including in order to comply with the requirements of the Building Regulations, planning permission may be required. The proposal approved by this decision may not be implementable without express planning permission if other external work has taken place under another Certificate of Lawful Development or planning permission granted before or after this decision. If you wish to deviate in any way from the proposals shown on the above drawings you should contact the Development Control Section of the Street Scene Department, 2nd floor, Civic Centre, 44 York Street, Twickenham, TW1 3BZ (Tel: 020 8891 7300). The development hereby permitted shall be carried out in accordance with the following approved plans and documents, where applicable:- Application form, EX-00 Existing Site and Location Plan, P101 Existing and Proposed Roof Plan, E100 Existing Plans, P100 Proposed Plans, received on 11 August 2026.
Understand planning application documents, officer reports and decision notices. Use a reading checklist, document table and worked example to inspect a case.
Understand pending consideration, approved, refused and withdrawn planning applications. Compare status labels and find the documents explaining each outcome.
Read planning drawings, floor plans, elevations and sections. Use labelled diagrams, a drawing comparison table and revision checks to understand a proposal.