Planning application
25/05481/FULL
Abercorn Place Estate Abercorn Place NW8 9DS
Proposal
Infill extension to the undercroft area of Warner House to create two flats and associated bin store and bike storage. Associated alterations including landscaping, new entrance door and canopies (part retrospective).
As published by the council, reference 25/05481/FULL
Timeline
Dates from the published record
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5 Aug 2025
Received by Westminster
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3 Nov 2025
Validated
Checked as complete and ready for consideration.
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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 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.
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Installation of replacement windows.
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26/03960/TCA Awaiting decision
99 Hamilton Terrace London NW8 9QY
(T3) Sycamore - This is situated in the rear garden of 99 Hamilton Terrace. Tree is fairly close to the property, proposing to reduce entire crown back to previous pruning points (approximately 2m) in order to allow more light and inhibit excessive root spread which could cause damage to the retaining wall or foundations (T4) Horse Chestnut - This is situated in the rear garden of 99 Hamilton Terrace. Tree is fairly close to the property, proposing to reduce entire crown back to previous pruning points (approximately 2m) and thin crown by 15%, in order to allow more light and inhibit excessive root spread which could cause damage to the retaining wall or foundations.
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26/03964/TCA Awaiting decision
101 Hamilton Terrace London NW8 9QY
(T5) Sycamore - This is situated in the rear garden of 101 Hamilton Terrace and significantly overhangs the roof of 2 Abercorn Walk. Proposing to reduce lateral branches back to the boundary, reduce height of the tree by up to 3m and lateral spread by 2m, in order to allow more light and inhibit excessive root spread which could cause damage to the retaining wall or foundations.
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26/03937/TCA Awaiting decision
1 Abercorn Walk NW8 9XX
(T1) Cherry - This small Cherry has grown at 45 degrees and has fairly significant die back throughout the crown. Proposing to fell the tree in order to plant a healthier specimen in its place (T2) Sycamore - This is situated in adjacent property (Wellesley Court). Tree is fairly close to the property, proposing to reduce entire crown back to previous pruning points (approximately 2m) in order to allow more light and inhibit excessive root spread which could cause damage to the retaining wall or foundations and remove lowest left hand limb growing towards property of approximately 200mm diameter. (T3) Sycamore - This is situated in the rear garden of 99 Hamilton Terrace. Tree is fairly close to the property, proposing to reduce entire crown back to previous pruning points (approximately 2m) in order to allow more light and inhibit excessive root spread which could cause damage to the retaining wall or foundations (T4) Horse Chestnut - This is situated in the rear garden of 99 Hamilton Terrace. Tree is fairly close to the property, proposing to reduce entire crown back to previous pruning points (approximately 2m) and thin crown by 15%, in order to allow more light and inhibit excessive root spread which could cause damage to the retaining wall or foundations (T5) Sycamore - This is situated in the rear garden of 101 Hamilton Terrace and significantly overhangs the roof of 2 Abercorn Walk. Proposing to reduce lateral branches back to the boundary, reduce height of the tree by up to 3m and lateral spread by 2m, in order to allow more light and inhibit excessive root spread which could cause damage to the retaining wall or foundations
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25/08389/TCA Awaiting decision
101 Hamilton Terrace London NW8 9QY
Left Hand Boundary: T1: Mature Sycamore: Approximately 16.00m: Reduce lateral and sub lateral growth growing across the boundary on No.2 Abercorn Walk and over the roof by up to approximately 5.00m. Crown height and lateral spread along the boundary line is to be preserved at current dimensions. General maintenance. Control encroachment. T2: Norway Maple: Approximately 11.00m: Reduce lateral and sub lateral growth growing across the boundary line, over the roof and garden at No.2 by approximately 1.50m back to as near to the boundary. To control encroachment. G1: Group of Laurel: Overhanging boundary: Trim back to as near to the boundary line as practicable. To control encroachment.
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25/05243/FULL Refused
101 Hamilton Terrace London NW8 9QY
Demolition of existing single dwelling house and construction of new house on basement, lower ground, ground, first, second and third floors and associated plant.
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26/04829/ADFULL Granted
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26/04841/ADFULL Granted
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26/04989/FULL Awaiting decision
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26/04986/FULL Awaiting decision
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