cs:westminster:26/06154/FULLPlanning Application cs:westminster:26/06154/FULL
Planning application at 24 Castellain Road London W9 1EZ, Westminster. View planning documents, track the decision and get email alerts on updates.
Use of part of the existing main flat roof as a private residential roof terrace; installation of black painted metal balustrading/railings; provision of safe access to the roof terrace via a sliding rooflight; installation of an Air Source Heat Pump (ASHP) at roof terrace level; construction of enlarged dormer and a terrace the rear of the 3rd floor; and associated works.
26/06154/FULL
24 Castellain Road London W9 1EZ
This is a planning application for a dormer extension at 24 Castellain Road London W9 1EZ. Westminster has handled 18,803 applications of this type and approves 88% of them, typically deciding them in 56 days. It was submitted on 9 September 2026 and is still awaiting a decision. The site is in the Maida Vale conservation area, with 1 listed building nearby. There are no previous applications recorded at this address. We hold 912 applications in total for the W9 postcode area.
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Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Westminster