cs:westminster:26/04873/NMAPlanning Application cs:westminster:26/04873/NMA

Amendment application at Orbis House 5 Mansfield Street London W1G 9NG, Westminster. View planning documents, track the decision and get email alerts on updates.

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Amendments to planning permission dated 05 September 2024 (RN: 24/01895/FULL) for: new courtyard surface including walk-on rooflight; window and door alterations; new window to Mansfield Mews at second floor level; new rooflights; repairs to roof and external brickwork; erection of new staircase in front area lightwell; partial infill of rear lightwell at ground floor level; erection of roof terrace; installation of PV panels at roof level; and associated works namely; to allow provision of guarding system to provide safe access for maintenance across the roof; alteration at south elevation omitting window SFW11 from the new WC, remove the existing RWP from the internal courtyard corner, removal of the existing plastic section of a redundant vent pipe at lower level and retain original lead; new cast iron rain water pipes at west elevation; and internal layout alterations at basement, ground, 2nd, 3rd floors. (Linked with 26/04876/LBC)

26/04873/NMA

Small

Amendment

Orbis House 5 Mansfield Street London W1G 9NG

SubmittedSubmitted21 Jul

ValidatedValidated

ConsultationConsultation

TargetTarget Date

DecidedDecided

7 weeks typical decision time in Westminster80% of amendment applications approved

This is an application to amend a permission at Orbis House 5 Mansfield Street London W1G 9NG. Westminster has handled 604 applications of this type and approves 80% of them, typically deciding them in 40 days. It was submitted on 21 July 2026 and is still awaiting a decision. The site is in the Harley Street conservation area, with 20 listed buildings nearby. There have been 2 other applications 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.