Planning application
Flat 41 2 Mansfield Street London W1G 9NF
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Installation of external AC condenser at main roof level, associated connection to Flat 41 and associated internal modifications. (Linked with 26/05035/FULL)
As published by the council, reference 26/05036/LBC
Application record
- Reference
- 26/05036/LBC
- Type
- Listed Building Consent Application
- Status
- Pending
- Received
- 27 Jul 2026
- Validated
- 27 Jul 2026
- Ward
- Marylebone
- Postcode
- W1G 9NF
Timeline
Dates from the published record
-
27 Jul 2026
Received by Westminster
-
4 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 21 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Westminster took a median of 61 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
Agent on file, an architecture practice registered in London
30 applications on PlanIndex · across 8 councils · 83% granted
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
1 document on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Trade members open them from here.
Open the documentsWhat happens while it is decided
The process from here
This application is with Westminster for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.
The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.
About heritage and listed buildings applications
How this application type works
Heritage applications concern listed buildings and conservation areas. Listed building consent is needed for works, inside or out, that affect the special interest of a listed building, and carrying out such works without consent is a criminal offence. The council weighs harm to the heritage asset against any public benefit of the proposal.
More on heritage and listed buildings applications in our guide
Nearby applications
Within 500 metres
-
Flat 10 2 Mansfield Street London W1G 9NF
87% historically approved · decision due ~8 Jun
Re-location of previously approved external air conditioning unit at roof level. Linked with 26/01152/LBC
Awaiting decision Full applications 17 docs -
Flat 10 2 Mansfield Street London W1G 9NF
90% historically approved · decision due ~8 Jun
Re-location of previously approved external air conditioning unit at roof level. Linked with 26/01151/FULL
Awaiting decision Heritage and listed buildings 14 docs -
Flat 49 2 Mansfield Street London W1G 9NF
90% historically approved · decision due ~29 Jul
Replacement of seven windows.
Awaiting decision Heritage and listed buildings Windows or glazing 15 docs -
4 Queen Anne Street London W1G 9LQ
Variaiton of Conditon 1 of planning permission dated 18 November 2024 (RN: 24/05063/FULL) for, 'Installation of two air conditioning units at main roof level with associated pipework on the rear elevation, installation of two grilles on the rear wall in the lightwell at lower ground floor level and internal alterations at lower ground and ground floor levels'; Namely, to amend the location of the two items of plant on the roof in addition to amending the specification of the anti-vibration mounts. (Linked with 25/07252/LBC) (Application under Section 73 of the Act).
Granted Full applications 26 docs -
4 Queen Anne Street London W1G 9LQ
Variation of Condition 1 of planning permission dated 22nd November 2024 (RN: 24/05074/FULL) for, 'Installation of one air conditioning unit at main roof level and two grilles within the window in the rear lightwell at ground floor level with associated pipework and internal alterations'; Namely, to allow for repositioning of the plant unit on the roof in addition to providing new higher performance anti-vibration mounts. (Linked with 25/07251/LBC) (Application under Section 73 of the Act).
Granted Full applications Windows or glazing 29 docs -
4 Queen Anne Street London W1G 9LQ
Installation of one air conditioning unit at main roof level and two grilles within the window in the rear lightwell at ground floor level with associated pipework and internal alterations. (Linked with 25/07255/FULL)
Granted Heritage and listed buildings Windows or glazing 24 docs
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