10 and 11 St Mary's Place, London, W8 5UE Data via plota.co.uk

PP/25/04399 - Planning Permission Approved

Proposal

Erection of a new external metal staircase, new metal railings and new first floor timber French doors Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
14 Jul 2025
✓
Approved
8 Sept 2025

Approved on 8 Sept 2025 · Last checked 24 Oct 2026

Documents

View the documents on the council's website ↗

Site constraints 9

Article 4 direction
Article 4 - No 100. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Air quality management area: Kensington and Chelsea AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
5 listed buildings within 150 m of the postcode pin
Nearest: Stonehall Outpatients Clinic, St Mary Abbot's Hospital, Grade II, about 58 m from the postcode pin · 4 Grade II
The site itself is not listed. Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show all 5 with distances
Historic England ↗
Conservation area about 23 m away: De Vere
The edge of the area; work outside it can still affect its setting.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Council document ↗
Also on the record
National infrastructure project about 1752 m away: Thames Tideway Tunnel; Inside the Kensington and Chelsea built-up area; Public transport access: PTAL 5 (very good), TfL 2023, for the 100 m square; Designated open space about 3 m away; Tree preservation order about 23 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 1 November 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

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Important details

Council
Kensington and Chelsea
Application type
Planning Permission
Postcode
W8 5UE
Received
14 Jul 2025
Validated
14 Jul 2025
Ward
Abingdon
Case officer
Show
Target decision
8 Sept 2025
Decision
Granted
Decision date
8 Sept 2025
Applicant
Show

How this decision compares

Decided in 56 days from validation, 22 days faster than Kensington and Chelsea's median of 78 for full applications. Approved, as 94% of full applications here are.

36%decided within 8 weeks
94%approved
1,540decided in the last year

Plota live figures for full applications decided by Kensington and Chelsea in the last twelve months, from validation. Kensington and Chelsea decision record →

Consultation & key dates

Comments by
15 Aug 2025

Historical activity at this location

30 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2025 Withdrawn
Non-material amendment to planning permission 23/07120 (Construction of 2.6m deep rear lo…
NMA/25/02044
2025 Approved
Partial replacement of existing masonry boundary wall with metal boundary wall
PP/25/00108
2024 Withdrawn
Non-material amendment to planning permission 23/07120 (Construction of 2.6m deep rear lo…
NMA/24/03303
2024 Withdrawn
Non-material amendment to planning permission 23/07120 to erect a cast iron spiral stairc…
NMA/24/03215
2023 Approved
Construction of 2.6m deep rear lower ground floor extensions at Nos 10 and 11; insertion…
PP/23/07120
Within ~100m

Nearby activity

2025 Approved
8 Cornwall Mews West, London, SW7 4BH
Construction of second floor roof addition
PP/25/05733
2025
10 St Mary's Place, London, W8 5UE
Construction of single-storey side infill extension at rear.
PP/25/06656
2025 Approved
Albert House, 27 Kelso Place, London, W8 5QG
Variation of condition 2 (approved drawings) of planning permission PP/24/00172 (Replacem…
PP/25/04817
2025
38 Kelso Place, London, W8 5QP
Excavation of an additional storey beneath footprint of property, with windows inserted i…
PP/25/05420
2025 Approved
1 Kelso Place, London, W8 5QD
Demolition of rear garden outbuilding and formation of outdoor garden space with seating…
PP/25/03421
2024 Approved
19 Kelso Place, London, W8 5QG
Infill ground floor rear extension; addition of side windows at ground floor level; remov…
PP/24/07616
2024 Approved
45-46 Kelso Place, LONDON, W8 5QQ
Extension at first floor: Infilling existing terrace with a white rendered wall with larg…
PP/24/08597
2024 Approved
19 Kelso Place, London, W8 5QG
Enlargement of first floor rear window to create a floor to ceiling window
PP/24/07620
2024 Withdrawn
10-11 St Mary's Place, LONDON, W8 5UE
Erection of external metal staircase, metal railings and first floor timber French doors…
PP/25/00090
2024 Withdrawn
38 Kelso Place, LONDON, W8 5QP
Excavation and construction of a lower ground floor, below ground floor, with windows ins…
PP/24/06447
2024 Approved
18 Kelso Place, LONDON, W8 5QD
Proposed rear extension to second floor of existing rear closet wing.
PP/24/03778
2024 Approved
10-11 St Mary's Place, LONDON, W8 5UE
Installation of two A.C outdoor condensing units in the rear gardens of Nos. 10 and 11 St…
PP/24/02320
2024 Withdrawn
18 Kelso Place, LONDON, W8 5QD
Proposed rear extension to second floor of existing rear closet wing.
PP/24/00370
2024 Approved
Albert House, 27 Kelso Place, LONDON, W8 5QG
Replacement infill extension and facade improvements, roof extension and conservation sty…
PP/24/00172
2023 Approved
Flat 25, Cornwall Gardens Court, 47-50 Cornwall Gardens, LONDON, SW7 4AD
Upgrading of heating system, lighting and finishes; repair and refurbishment including ch…
PP/23/08001
2023 Approved
38 Kelso Place, LONDON, W8 5QP
Prune 1 x Silver maple (rear)
ARB/23/08290
2022 Approved
1 Kelso Place, London, W8 5QD
Construction of basement beneath the footprint of the building with light well to front a…
PP/22/06710
2023 Approved
10 St Mary's Place, LONDON, W8 5UE
Erection of single-storey side infill extension.
PP/23/07173
2023 Approved
2 Kelso Place, LONDON, W8 5QD
Prune 1 x Birch in rear garden.
ARB/23/07950
2023 Approved
18 Kelso Place, London, W8 5QD
Construction of a two storey side infill extension to end of terrace dwelling house
PP/23/04373
2016 Refused
32 Stanford Road, LONDON, W8 5PZ
Construction of dormer window to side elevation.
PP/16/06320
2016 Approved
32 Stanford Road, LONDON, W8 5PZ
Erection of a rear extension at first floor level.
PP/16/04863
2016 Approved
24 Stanford Road, LONDON, W8 5PZ
Prune 1 x Japanese Maple(front)
ARB/16/03794
2016 Approved
54 Stanford Road, LONDON, W8 5PZ
Infilling of gap between closet wing and 6 storey wall of adjacent flat to south. Erectio…
PP/16/00587
2016 Approved
21 Kelso Place, LONDON, W8 5QG
Creation of ground floor rear extension including replacement of top 3 panels of garage d…
PP/16/00769
Kensington and Chelsea
Planning Authority Score
5.1/10
Average
#144 of 296 councils
Relevant to this application:
Householder decisions

Kensington and Chelsea ranks #174 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (94%) than the national average (90%).

These figures are council-wide context, not a prediction for this application. View full council performance
Kensington and Chelsea decision statistics
Based on MHCLG data, the nine months to December 2025
93%
Overall approval rate
Above avg (87%) #58 of 296
94%
Householder approved
Above avg (90%) #110 of 296
61%
Decided in 8 weeks
Below avg (63%) #174 of 296
40%
Extended time limit
Below avg (41%) #152 of 296
94%
Minor dwellings approved
455 decided (1-9 homes)
87%
Change of use approved
53 decided
1,839
Total decisions
135 refused in the nine months to December 2025
Source: MHCLG planning statistics · See full council rankings