Planning application
40 Ordnance Hill London NW8 6PU
Works: Extension Loft or dormer Windows or glazing Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Amendments to planning permission dated 15th September 2025 (RN:25/00867/FULL) for Erection of a single storey rear extension, and part single / part double storey side extension and associated refurbishment works including rear dormer windows, landscaping works, and works to the front and rear facades. Namely, the movement of the proposed rear extension away from the existing garden wall; change in material to the proposed side, rear, and dormer windows; the size of one of the proposed rooflights to the single storey-side extension; proposed that the clerestory windows to the side extension are extended below brickwork at first floor level; and change to the design of the front elevation window which will involve the removal the amending condition (condition 5) attached to the original decision which required the alteration of this window's design.
As published by the council, reference 25/08158/NMA
Application record
- Reference
- 25/08158/NMA
- Type
- Non-material amendments
- Status
- Decided
- Decision
- Granted As published: Application Permitted
- Received
- 7 Nov 2025
- Validated
- 7 Nov 2025
- Decided
- 26 Feb 2026
- Ward
- Regent's Park
- Decision by
- Delegated Decision
- Postcode
- NW8 6PU
Site history
Applications at this address on the Westminster register
This site has had 5 applications since 2025: 3 approved, 0 refused.
-
26/06929/TPO Awaiting decision
40 Ordnance Hill London NW8 6PU
Lime T2 -To prune any roots over 25mm exposed within the excavated holes for the manhole drainage inspection chambers to be located immediately in front of the house to the southern boundary.
-
26/01713/FULL Awaiting decision
40 Ordnance Hill London NW8 6PU
Variation of conditions 1, 5, 7, 9 of planning permission dated 15th September 2025 (RN 25/00867/FULL) for the Erection of a single storey rear extension, and part single / part double storey side extension and associated refurbishment works including rear dormer windows, landscaping works, and works to the front and rear facades. NAMELY, relocation of the ASHP from the rear garden to the front area and incorporated within the bin and bike storage structure; Relocation of the pedestrian gate from the street into property; Repair to the existing boundary wall; Demolition of remaining flank wall; Widening of driveway entrance; New vehicular and pedestrian gates; Flat roof (set back from front elevation) to step up and party wall to be raised; Demolition of remaining flank wall; Demolition of remaining rear wall; Raising of first floor; Raising of loft floor level; Demolition of roof; Ground floor side extension parapet wall to be raised to align with No. 38 Ordnance Hill; Party Wall raised; and Flat roof (behind raised boundary wall) to step up.
-
25/09288/ADFULL Granted
40 Ordnance Hill London NW8 6PU
Details of all foundations within tree root protection areas pursuant to condition 9 of planning permission dated 15 September 2025 (RN: 25/00867/FULL)
-
25/06670/ADFULL Granted
40 Ordnance Hill London NW8 6PU
Detailed method statement explaining the measures you will take to protect the trees on and close to the site pursuant to condition 7 of planning permission dated 15th September 2025 (RN:25/00867/FULL).
Timeline
Dates from the published record
-
7 Nov 2025
Received by Westminster
-
26 Feb 2026
Decision issued: Application Permitted
-
20 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Chroma Planning and Development Limited Agent, a planning consultancy registered in London
Active · incorporated 2020 · London
19 applications on PlanIndex · across 8 councils · 83% granted
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
20 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.
Watch members (£5 a month) open the document list from here.
Open the documentsWhat this grant of permission means
Westminster granted permission on 26 February 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
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 0.3 miles
-
40 Ordnance Hill London NW8 6PU
88% historically approved · decision due ~25 Jun
Variation of conditions 1, 5, 7, 9 of planning permission dated 15th September 2025 (RN 25/00867/FULL) for the Erection of a single storey rear extension, and part single / part double storey side extension and associated refurbishment works including rear dormer windows, landscaping works, and works to the front and rear facades. NAMELY, relocation of the ASHP from the rear garden to the front area and incorporated within the bin and bike storage structure; Relocation of the pedestrian gate from the street into property; Repair to the existing boundary wall; Demolition of remaining flank wall; Widening of driveway entrance; New vehicular and pedestrian gates; Flat roof (set back from front elevation) to step up and party wall to be raised; Demolition of remaining flank wall; Demolition of remaining rear wall; Raising of first floor; Raising of loft floor level; Demolition of roof; Ground floor side extension parapet wall to be raised to align with No. 38 Ordnance Hill; Party Wall raised; and Flat roof (behind raised boundary wall) to step up.
Awaiting decision Full applications Extension Loft or dormer +2 55 docsSmall domestic -
40 Ordnance Hill London NW8 6PU
100% historically approved · decision due ~7 Dec
Lime T2 -To prune any roots over 25mm exposed within the excavated holes for the manhole drainage inspection chambers to be located immediately in front of the house to the southern boundary.
Awaiting decision Trees -
38 Ordnance Hill London NW8 6PU
88% historically approved · decision due ~4 Dec
Erection of a two-storey side extension and first-floor rear extension.
Awaiting decision Full applications Extension -
36 Ordnance Hill London NW8 6PU
Detailed drawings of hard and soft landscaping schemen pursuant to condition 9 of planning permission dated 29th January 2025 (RN: 24/05632/FULL).
Granted Full applications 4 docs -
40 Ordnance Hill London NW8 6PU
Detailed method statement explaining the measures you will take to protect the trees on and close to the site pursuant to condition 7 of planning permission dated 15th September 2025 (RN:25/00867/FULL).
Granted Full applications Trees 8 docs -
40 Ordnance Hill London NW8 6PU
Details of all foundations within tree root protection areas pursuant to condition 9 of planning permission dated 15 September 2025 (RN: 25/00867/FULL)
Granted Full applications Trees 3 docs
Other amendment applications
In Westminster
-
26/07459/NMA Awaiting decision
1 Hanover Square London W1S 1HA
Amendments to planning pemrission dated 10 October 2025 (RN: 25/01558/FULL) for the: Partial demolition, refurbishment and extension of the existing building to provide a sub-basement, basement, ground plus eight storey building; infilling and stepped rear extension; excavation of a new sub-basement level; installation of new plant equipment at basement and roof level; terraces at fourth, fifth, sixth, seventh and eighth floor levels; soft and hard landscaping; reprovision of car parking; new cycle parking facilities; and associated external works. Use of the building for retail and/or restaurant (Class E) on part ground floor and office (Class E) on all other floors. NAMELY, to allow alterations to the design of the ground floor frontages on Hanover Square and St George Street.
-
26/07438/NMA Awaiting decision
29 - 31 Hill Street London W1J 5LS
Amendments to planning permission dated 1st July 2025 (RN 25/01006/FULL) for the external alterations at roof level including the creation of Level 04 roof terrace for use in association with existing office (Class E), replacement and installation of new plant and landscaping, replacement of windows, introduction of louvres, removal and replacement of rooflights, installation of new rooflight and other associated works. NAMELY, for alterations comprising of the removal of window sash boxes and weights, changes to the window mullion arrangement, the removal of two sash windows, the installation of secondary glazing, the removal of existing chamber hatch and installation of extract vent and integrated bench, the external replacement of rainwater goods and hoppers, the removal of bricks and installation of airbricks, minor demolition works, replacement of roof covering, removal of ductwork, roof plant rearrangement, the installation of a new external door to plant area, minor layout alterations and other associated works.
-
26/07389/NMA Decided
Flat 1 5 Grittleton Road London W9 2DD
Amendments to planning permission dated 04 June 2025 (RN: 25/02022/FULL), NAMELY, amendment of Condition 4 to correct the property address from 9 Aldridge Road Villas to Flat 1 5 Grittleton Road.
-
26/07377/NMA Awaiting decision
60 Ledbury Road London W11 2AJ
Amendments to planning permission dated 2nd October 2025 (RN 25/04018/FULL) for the Partial demolition, refurbishment, and erection of a mansard roof extension to form a new third floor with dormers to front, side and rear elevations; to form 6 flats (Class C3) on upper floors; external plant equipment and ductwork; lower ground floor excavation to increase floor to ceiling height; replacement windows; cycle parking and associated external alterations; use of the part ground floor and lower ground floor as retail and restaurant (Class E). Site includes 60-68 Ledbury Road) NAMELY, An amendment to the basement and ground floor drawing reference numbers; amendment to the description of development, in reference to restaurant and or retail use; and amendments to C
-
26/07375/NMA Awaiting decision
77 Hereford Road London W2 5BB
Amendments to planning permission dated 4th August 2026 (RN 26/03970/FULL) for the Replacement of roof terrace access stair with glazed hatch, new timber decking and front and rear roof railings to roof terrace, with infilling side window of closet wing. NAMELY, Hinged hatch access substituted by sliding hatch.