Planning application
129 Randolph Avenue London W9 1DN
Works: Extension Windows or glazing
Relates to 25/05523/FULL
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Amendments to planning permission dated 08 October 2025 (RN: 25/05523/FULL) for the: NAMELY, to allow the provision of a narrow, opaque, fixed timber-framed glazed panel along the side elevation of the newly approved rear extension and introduce a new sash window on the side elevation at lower ground floor level.
As published by the council, reference 25/07958/NMA
Application record
- Reference
- 25/07958/NMA
- Type
- Non-material amendments
- Status
- Pending
- Received
- 3 Nov 2025
- Validated
- 3 Nov 2025
- Ward
- Maida Vale
- Postcode
- W9 1DN
Site history
Applications at this address on the Westminster register
This site has had 5 applications since 2025: 1 approved, 1 refused.
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26/04168/FULL Awaiting decision
129 Randolph Avenue London W9 1DN
Replacement of existing front boundary wall with new London Stock wall and Wrought Iron entrance gate spanning between two new brick piers to match the height of the pier shared with 127 Randolph Avenue.
-
26/01889/FULL Awaiting decision
129 Randolph Avenue London W9 1DN
Replacement of existing front boundary wall with new London Stock walls and Wrought Iron railings and access door and bin store.
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25/06019/FULL Refused
129 Randolph Avenue London W9 1DN
Variation of condition 1 of planning permission dated 16th July 2025 (RN:25/02409/FULL) for the Erection of dormers to the rear and side slopes, installation of skylight to the roof crown and one small conservation rooflight to the side roofslope. Namely, to amend the size of the side dormer.
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25/05523/FULL Granted
129 Randolph Avenue London W9 1DN
Erection of a single storey rear extension with green roof and skylight at lower ground floor level; alterations to lower ground floor side windows and doors; replacement of existing windows with double glazed windows to match existing; and associated works.
Timeline
Dates from the published record
-
3 Nov 2025
Received by Westminster
-
21 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 29 December 2025, 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 64 days over the applications it decided in the last year.
Related applications
Cases linked to this one on the register
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25/05523/FULL Granted
129 Randolph Avenue London W9 1DN
Erection of a single storey rear extension with green roof and skylight at lower ground floor level; alterations to lower ground floor side windows and doors; replacement of existing windows with double glazed windows to match existing; and associated works.
Who's behind it
Company information only, from the register and Companies House
Mida Architecture Ltd Agent, an architecture practice registered in London
Active · incorporated 2017 · London
10 applications on PlanIndex · across 5 councils
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
7 documents 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
This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided amendment applications in a median of 54 days. More in our guide to how long planning decisions take.
About amendment applications
An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
129 Randolph Avenue London W9 1DN
87% historically approved · decision due ~9 Jun
Replacement of existing front boundary wall with new London Stock walls and Wrought Iron railings and access door and bin store.
Awaiting decision Full applications 14 docsSmall domestic -
129 Randolph Avenue London W9 1DN
Erection of a single storey rear extension with green roof and skylight at lower ground floor level; alterations to lower ground floor side windows and doors; replacement of existing windows with double glazed windows to match existing; and associated works.
Granted Full applications Extension Windows or glazing 28 docsSmall domestic -
129 Randolph Avenue London W9 1DN
Variation of condition 1 of planning permission dated 16th July 2025 (RN:25/02409/FULL) for the Erection of dormers to the rear and side slopes, installation of skylight to the roof crown and one small conservation rooflight to the side roofslope. Namely, to amend the size of the side dormer.
Refused Full applications Loft or dormer 25 docs -
137 Randolph Avenue London W9 1DN
1 x Bay (T1). Whole crown reduction, including reducing the overall height by approximately 5m, and reducing the radius of the crown by approximately 1m.
Granted Trees 4 docs -
129 Randolph Avenue London W9 1DN
87% historically approved · decision due ~15 Sep
Replacement of existing front boundary wall with new London Stock wall and Wrought Iron entrance gate spanning between two new brick piers to match the height of the pier shared with 127 Randolph Avenue.
Awaiting decision Full applications 11 docsSmall domestic -
123 Randolph Avenue London W9 1DN
Excavation of front garden and vault to provide single storey infill extension at lower ground floor level and associated works.
Granted Full applications Extension 10 docsSmall domestic
Other amendment applications
In Westminster
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26/06201/NMA Awaiting decision
Almack House 28 King Street St James's London SW1Y 6QW
Amendments to planning permission dated 16th April 2026 (RN:26/01487/FULL) for Installation of a mechanical plant at lower ground floor and installation of two grilles to two lower ground floor windows. Namely, addition of window top grille
-
26/06212/NMA Awaiting decision
10 - 11 Lancaster Gate London W2 3LH
Amendment to Condition 12 (Whole Life Carbon) of planning permission dated 19th April 2024 (RN 23/04044/FULL) for Change of use from hotel to residential use (Class C3) with associated internal alterations to create 11 new units and external alterations comprising reconfiguration and recladding of the rear extension and restoration of the existing building. Namely to include additional requirement to evidence and justify where benchmarks cannot be achieved, consider mitigation measures and if none, evidence that all mitigation measures have been exhausted. (Linked with RN 26/06213/ADFULL)
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26/06211/NMA Awaiting decision
15 Portland Place London W1B 1PT
Amendments to planning permission dated 21th July 2022 (RN:22/03521/FULL) for Variation of condition 5 of planning permission dated 11th April 2018 (17/10815/FULL) for the Use of the building for a temporary period of 20 years as a medical use (Use Class D1) personal to OM Tower LLP. Namely, to amend condition 3.
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26/06199/NMA Awaiting decision
33 - 35 Praed Street London W2 1NR
Amendments to planning permission dated 24th Septmebr 2024 (RN:24/03287/FULL) for Use of lower ground and ground floors as supermarket with ancillary bakery (Class E); Use of first, second and third floors as aparthotel with 19 bedrooms (Class C1); Installation of plant machinery and solar thermal panels at roof level, Replacement of windows; and associated external alterations. Namely, Introduction of two shawarma grill machines in the supermarket area at ground floor level; the introduction of a new canopy to provide ventilation for the two shawarma grill machines; and amendments to the ventilation design for the lower ground floor bakery canopy extract.
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26/06160/NMA Awaiting decision
The Arcade Dolphin Square London SW1V 3LX
Amendments to planing permission dated 11 June 2025 (RN: 25/01157/FULL) for: Alterations to the ground floor of Rodney House including the shopping arcade, with the introduction of new shopfronts to the Chichester Street frontage; new entrances with accessible ramps for accessibility; and associated works. Namely, amendments to the treatment of the end bays of the Chichester Street elevation