Planning application
25/07469/LBC
5 Derby Street London W1J 7AB
Proposal
Demolition of rear closet wing extension and erection of replacement extension from ground to third floor level, demolition of part of the existing roof structure and erection of a mansard roof extension at fourth floor level; excavation of pavement vaults to increase floor to ceiling heights; external alterations including the installation of replacement windows, railing and step coverings; removal of render and creation of an entrance porch; internal alterations throughout all in connection with the use of the building as four flats (Class C3). (Linked to 25/07468/FULL)
As published by the council, reference 25/07469/LBC
Timeline
Dates from the published record
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15 Oct 2025
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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25/07468/FULL Awaiting decision
5 Derby Street London W1J 7AB
Demolition of rear closet wing extension and erection of replacement extension from ground to third floor level, demolition of part of the existing roof structure and erection of a mansard roof extension at fourth floor level; excavation of pavement vaults to increase floor to ceiling heights; external alterations including the installation of replacement windows, railing and step coverings; removal of render and creation of an entrance porch; internal alterations throughout all in connection with the use of the building as four flats (Class C3). (Linked to 25/07469/LBC)
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26/02235/ADFULL Awaiting decision
20 Stanhope Row London W1J 7BT
Detailed samples of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located, the proposed windows/doors and proposed railings pursuant to conditions 4 and 5 of planning permission dated 20th February 2025 (RN:24/07198).
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26/00938/ADLBC Awaiting decision
Curzon House 21 - 23 Curzon Street London W1J 7TE
Details of approval of two additional samples of the brick cleaning pursuant to condition 3 of listed building dated 15th July 2025 (RN:25/03459/LBC)
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25/08286/NMA Awaiting decision
Development Site At 2-6 Stanhope Row, 16 Stanhope Row, 36-37 Hertford St And 16A, 16B And 17 Market Mews London
Amendments to planning permission dated 31st October 2025 (RN 24/05472/FULL ) for the Variation of condition 1 and removal of condition 35 of planning permission dated 24th May 2023 (RN 22/05759/FULL) for the demolition and replacement of existing fifth floor, demolition of existing plant room, and erection of a single storey roof extension at sixth floor to 2-6 Stanhope Row with replacement windows, terraces at fifth and sixth floors and remodelling works; demolition of 16 Stanhope Row, 16a, 16b and 17 Market Mews, excavation at basement level and erection of a four-storey (plus part basement floor) replacement building, all to provide an 82-bedroom hotel (Class C1). Demolition of 37 Hertford Street and erection of replacement building (basement to fourth floor mansard roof plus rooftop plant enclosure); and Internal and external alterations to 36 Hertford Street including demolition and remodelling of existing mansard roof; together with excavation at basement level to 36 and 37 Hertford Street to lower existing basement slab level; all to provide 16 residential dwellings (Class C3) along with provision for cycle parking, terraces, refuse storage and rooftop plant, together with other associated works. NAMELY, NAMELY, to increase the height of the plant enclosure, revised entrance area and a change to the wording of condition 4 relating to the timing of the Whole life carbon assessment.
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26/01162/NMA Granted
Development Site At 2-6 Stanhope Row, 16 Stanhope Row, 36-37 Hertford St And 16A, 16B And 17 Market Mews London
Amendments to planning permission dated 31st October 2025 (RN:24/05472/FULL) for Variation of condition 1 and removal of condition 35 of planning permission dated 24th May 2023 (RN 22/05759/FULL) for the demolition and replacement of existing fifth floor, demolition of existing plant room, and erection of a single storey roof extension at sixth floor to 2-6 Stanhope Row with replacement windows, terraces at fifth and sixth floors and remodelling works; demolition of 16 Stanhope Row, 16a, 16b and 17 Market Mews, excavation at basement level and erection of a four-storey (plus part basement floor) replacement building, all to provide an 82-bedroom hotel (Class C1). Demolition of 37 Hertford Street and erection of replacement building (basement to fourth floor mansard roof plus rooftop plant enclosure); and Internal and external alterations to 36 Hertford Street including demolition and remodelling of existing mansard roof; together with excavation at basement level to 36 and 37 Hertford Street to lower existing basement slab level; all to provide 16 residential dwellings (Class C3) along with provision for cycle parking, terraces, refuse storage and rooftop plant, together with other associated works. NAMELY; to enable the introduction of low level external lighting,
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26/02739/FULL Awaiting decision
Leconfield House Curzon Street London W1J 5JA
External facade alterations of Leconfield House. (Linked with 26/02747/ADV)
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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)