26/02045/LBCPlanning Application 26/02045/LBC

Heritage application at Flat 45 2 Mansfield Street London W1G 9NF, Westminster. View planning documents, track the decision and get email alerts on updates.

Enriching application data

2/3

Council recordsAppealsFlood risk

Pending Decision

Loading…

Roof extension to the existing mansard roof with associated elevational alterations on the Duchess Street and Rear Elevation, alterations to the existing mansard roof on the Mansfield Street Elevation including a new dormer window and the replacement of the existing external doors, two new rooflights at main roof level, installation of two external air conditioning (AC) condensers at main roof level, replacement of existing rooflights and windows, installation of new external cupboard at terrace level and internal reconfigurations throughout. (Linked with 26/02044/FULL)

26/02045/LBC

Small

Heritage

Flat 45 2 Mansfield Street London W1G 9NF

SubmittedSubmitted27 Mar

ValidatedValidated

ConsultationConsultation

TargetTarget Date

DecidedDecided

7 weeks typical decision time in Westminster90% of heritage applications approved

This is a heritage application for a dormer extension at Flat 45 2 Mansfield Street London W1G 9NF. Westminster has handled 2,686 applications of this type and approves 90% of them, typically deciding them in 64 days. It was submitted on 27 March 2026 and is still awaiting a decision. The site is in the Harley Street conservation area, with 20 listed buildings nearby. There has been 1 other application at this address. In the past year there have been 221 applications across Marylebone. We hold 303 applications in total for the W1G postcode area.