Planning application
26/01352/LBC
Third Floor And Fourth Floor Maisonette 49 Eaton Place London SW1X 8DE
Proposal
Installation of air conditioning system with external condenser at roof level; new roof light; internal alterations and refurbishment works.
As published by the council, reference 26/01352/LBC
Timeline
Dates from the published record
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3 Mar 2026
Received by Westminster
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21 Jul 2026
Added to PlanIndex
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Decision
Awaiting decision
The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.
What 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
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26/01351/FULL Awaiting decision
Third Floor And Fourth Floor Maisonette 49 Eaton Place London SW1X 8DE
Installation of air conditioning condenser unit at roof level and new roof light for maintenance access.
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26/03623/ADLBC Awaiting decision
Third Floor And Fourth Floor Maisonette 49 Eaton Place London SW1X 8DE
Details of new doors pursuant to condition 7 of listed building consent dated 28th April 2026 (RN:26/01352).
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26/03183/FULL Awaiting decision
Third Floor And Fourth Floor Maisonette 49 Eaton Place London SW1X 8DE
Installation of new slimline double glazed sash windows throughout within retained box frames. (Linked with 26/03184/LBC)
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26/03184/LBC Awaiting decision
Third Floor And Fourth Floor Maisonette 49 Eaton Place London SW1X 8DE
Installation of new slimline double glazed sash windows throughout within retained box frames. (Linked with 26/03183/FULL)
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26/01406/FULL Awaiting decision
2A Lyall Mews London SW1X 8DJ
External alterations including: lowering of window openings at first floor on the front elevation and introduction of Juliet balconies, replacement of garage door, new rooflight, upgrades to the fenestration to front and rear and rebuilding of front entrance steps.
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25/08951/FULL Granted
59 Eaton Place London SW1X 8DF
Replacement of windows; installation of air conditioning condenser units and acoustic screen at rear lower ground floor level; formation of new door openings at lower ground floor rear elevation; installation of external spiral stair within rear courtyard; and associated external alterations.
Other heritage and listed buildings applications
In Westminster
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26/04984/LBC Awaiting decision
47G Randolph Avenue London W9 1BQ
Installation of replacement fire surround.
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26/04997/LBC Awaiting decision
Hanover Lodge Outer Circle Regent's Park London NW1 4HB
Erection of a morning room side extension. (Linked to 26/04996/FULL)
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26/04979/LBC Awaiting decision
12 Brewer Street London W1F 0SF
Internal alterations including removal of internal enclosures; Replacement flooring, shelving and slatwall systems, staircase handrail repair and other associated joinery works.
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26/04987/LBC Awaiting decision
Basement And Ground Floor 8 Ganton Street London W1F 7QL
Repainting of the existing timber shopfront, hand-painted fascia lettering, installation of a new hanging sign using the existing projecting sign bracket, and installation of a discreet fascia-mounted LED trough light.
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26/04995/LBC Awaiting decision
Hanover Lodge Outer Circle Regent's Park London NW1 4HB
Erection of rear conservatory extensions and an entrance loggia to side with roof terrace above, together with associated landscaping and alterations. (Linked with 26/04994/FULL)