Planning application
25/09172/FULL
23 Blomfield Road London W9 1AD
Proposal
Alterations to the basement and rear extension and fenestration, including the installation of a door in place of the approved windows and replacement of front lightwell balustrade with railings and associated works (Part Retrospective) [Linked to 25/09163/LBC]
As published by the council, reference 25/09172/FULL
Timeline
Dates from the published record
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18 Dec 2025
Received by Westminster
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20 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 full applications applications
How this application type works
A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.
Nearby applications
Within 500 metres
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25/06745/TCA Granted
23 Blomfield Road London W9 1AD
1 x apple (T1, rear): Crown reduction of approximately 1.5m on all aspects of tree. 1 x Handkerchief (T2, rear): Crown reduction of up to 2m. 1 x Handkerchief tree (T4, rear): Gently shape the tree by shortening overlong branches. 1 x Ginko biloba (T5, front): Remove approximately 5 epicormic shoots from the lowest branches which have shot up vertically from horizontal branches.
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25/09163/LBC Awaiting decision
23 Blomfield Road London W9 1AD
Alterations to the basement and rear extension and fenestration, including the installation of a door in place of the approved windows and replacement of front lightwell balustrade with railings and associated works; internal alterations including internal partition subdividing the kitchen area at lower ground floor level, alterations to the existing staircase, and other associated internal works (Part Retrospective) [Linked to 25/09172/FULL]
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25/07875/TCA Granted
22 Blomfield Road London W9 1AD
1 x Acer negundo (T3, rear): gently prune back from liquid amber to create a seperation between the 2 trees.
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25/07794/TCA Awaiting decision
22 Blomfield Road London W9 1AD
1 x golden false acacia (front): Fell 1 x Box elder (rear): crown reduce to previous, most recent reduction points (approximately 2m all round), ensuring 2m clearance from property. 2 x small suppressed cypress trees: fell Leyland cypress group: crown lift by 1-2m as required to clear garage roof by 1-1.5m. Remove dead branches overhanging the garage.
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25/07794/TPO Awaiting decision
22 Blomfield Road London W9 1AD
1 x golden false acacia (front): Fell 1 x Box elder (rear): crown reduce to previous, most recent reduction points (approximately 2m all round), ensuring 2m clearance from property. 2 x small suppressed cypress trees: fell Leyland cypress group: crown lift by 1-2m as required to clear garage roof by 1-1.5m. Remove dead branches overhanging the garage.
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26/04854/TCA Awaiting decision
2 Randolph Road London W9 1AN
Willow T1 (15M high, 250mm dia.) - Fell, causing too much shade over the tiny garden at 1a Randolph Mews.
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In Westminster
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26/04824/ADFULL Granted
New Zealand House 80 Haymarket London SW1Y 4TE
Detailed design and specification of new blinds to NZH based on mock-up trials on-site. pursuant to condition 32 (i) of planning permission dated 8th April 2024 (23/00571/FULL).
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26/04829/ADFULL Granted
New Zealand House 80 Haymarket London SW1Y 4TE
Details of external and internal signage strategy pursuant to Condition 33(E) of planning permission dated 8th April 2024 (RN: 23/00571/FULL)
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26/04841/ADFULL Granted
29 Henstridge Place London NW8 6QD
Details of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to condition 5 of planning permission dated 18th November 2025 (RN:25/06159).
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26/04989/FULL Awaiting decision
1 Kildare Terrace London W2 5JT
Erection of a mansard roof extending over the main house and side wing, replacement lower ground rear extension with roof terrace above, lowering of lower ground floor slab, installation of an air source heat pump in rear garden, new front boundary treatment, and new second floor window on the north elevation.
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26/04986/FULL Awaiting decision
Inver Court Inverness Terrace London W2 6JB
Replacement of combustible materials in the render facades; timber decking and plastic soffits/ fascias to terraces with non-combustible materials on the 5th and 6th floors.