9 Maunsel Street London SW1P 2QL Data via plota.co.uk

26/07139/FULL - Full Planning Permission Application Pending
Extensions & alterations

Proposal

Erection of a single storey rear extension at ground floor level. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
19 Oct 2026
Decision
Expected by 14 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision between 9 Dec 2026 and 18 Dec 2026, from Westminster's recent extensions.

Documents 12

Statements & assessments 1

PDF DESIGN AND ACCESS STATEMENT Design and Access Statement · 19 Oct 2026 View ↗

Plans & drawings 9

PDF PROPOSED GROUND FLOOR Drawing · 19 Oct 2026 View ↗ PDF PROPOSED ROOF PLAN Drawing · 19 Oct 2026 View ↗ PDF PROPOSED SECTION AA Drawing · 19 Oct 2026 View ↗ PDF PROPOSED SECTION BB Drawing · 19 Oct 2026 View ↗ PDF PROPOSED REAR ELEVATION Drawing · 19 Oct 2026 View ↗ PDF EXISTING LOWER AND UPPER GROUND FLOOR PLANS Drawing · 19 Oct 2026 View ↗ PDF EXISTING SECTION A-A Drawing · 19 Oct 2026 View ↗ PDF EXISTING FRONT AND REAR ELEVATIONS Drawing · 19 Oct 2026 View ↗ PDF SITE LOCATION PLAN Location Plan · 19 Oct 2026 View ↗

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 19 Oct 2026 View ↗

Other documents 1

PDF RECEIPT OF APPLICATION Other · 21 Oct 2026 View ↗

All documents on the council site ↗

Site constraints 10

Flood zone 3, rivers and sea
High chance: a 1 in 100 or greater annual chance from rivers, or 1 in 200 from the sea. Any development here needs a flood risk assessment. Defences are not counted.
The Environment Agency flood map for planning. Homes in zone 3 must also pass the sequential test. Surface water flooding is a separate map.
Flood map ↗
Vincent Square conservation area
Demolition needs planning permission and permitted development is restricted.
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 ↗
Article 4 direction
Article 4 Basement Development Permitted Rights Removed. Named permitted development rights are withdrawn here.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.
Archaeological priority area: City of Westminster APA 3.2
An assessment or field evaluation may be asked for before ground works.
The council or Historic England considers archaeology likely here. A desk-based assessment, and sometimes trial trenching, can be asked for with the application.
Air quality management area: Westminster 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 ↗
National infrastructure project 164 m away: Thames Tideway Tunnel
The site is 164 m from the project boundary. Waste water treatment, decided. The project page says whether consent was granted. Also within 2 km: London Strategic Heat Main Project (at pre-application, 305 m).
Nationally significant infrastructure projects (power stations, electricity lines, pipelines, major roads and railways, harbours, airports and reservoirs) are consented by a Secretary of State under the Planning Act 2008, after an examination by the Planning Inspectorate, rather than by the council. The boundary is the one the Inspectorate consults on and can change as the scheme does. Projects are shown within 2 km of the site.
Planning Inspectorate project page ↗
15 listed buildings within 150 m
Nearest: Lamp post outside 26 Maunsel Street, Grade II, 15 m away · 2 Grade II*, 13 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 15 with distances
Historic England ↗
Central activities zone
The core of central London in the London Plan.
Offices, culture and the other strategic functions of the centre take priority over new housing here.
Also on the record
Inside the City of Westminster built-up area; Public transport access: PTAL 6b (excellent), TfL 2023, for the 100 m square.
Not affected
Not green belt · No scheduled monument at the site

Checked on 22 October 2026. 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.

Sales history 1

Last sold for £328,000 in August 1995. Terraced house, freehold.

17 August 1995£328,000

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area113 m² (1,216 sq ft)
Energy ratingE (54 out of 100), could reach C
PropertyMid-terrace house, 5 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in May 2025, the latest held for this property. The building may have changed since. View the certificate

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Other new applications on this street

6 May 2026Approved

31 Maunsel Street London SW1P 2QN

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Important details

Council
Westminster
Application type
Full Planning Permission Application
Postcode
SW1P 2QL
Received
19 Oct 2026
Validated
19 Oct 2026
Ward
Vincent Square
Case officer
Show
Target decision
14 Dec 2026
Applicant
Show
Agent
Appleton Weiner

Decision outlook

Day 9 of the 56-day target. Westminster usually decides extensions by day 55.

Day 947 days to the 56-day target
56%decided within 8 weeks
88%approved
1,688decided in the last year

Plota live figures for extensions decided by Westminster in the last twelve months, from validation. Westminster decision record →

Public comments

No public comments yet.

Last counted 22 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15303808
Planning Portal ref
PP-15303808
Env. assessment
No

Historical activity at this location

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

This property

Previous applications at this address

2019 Approved
1 x nettle tree (rear): selectively reduce crown height by 2m, selectively reduce lateral…
19/06757/TCA
Within ~100m

Nearby activity

2025 Approved
1 Vincent Square London SW1P 2PN
Alterations to external façades in connection with the installation of balconies, juliet…
25/05463/FULL
2025
17 - 19 Regency Street London SW1P 4BY
Installation of guard railing to perimeter of flat roof to corner plot house.
25/07642/FULL
2025 Approved
1 Vincent Square London SW1P 2PN
Amendments to the buildings fenestration, including changes to the buildings windows from…
25/04168/FULL
2025 Approved
Astral House Regency Place London SW1P 2EA
Installation of railings to the existing balconies located on the Regency Street and Maun…
25/02148/FULL
2025 Withdrawn
Old Lodge Vincent Square London SW1P 2PW
Installation of a new metal gate to the ground floor entrance.
25/01816/FULL
2024 Approved
3 Maunsel Street London SW1P 2QL
Erection of a single storey rear extension at first floor level; new rear windows; new ro…
24/03026/FULL
2024
17 Maunsel Street London SW1P 2QL
T01 ??? Laburnum anagyroides (Golden chain tree) T01 is to be reduced by up to 1.0m to cr…
24/05021/TCA
2024 Approved
Westminster City Council Public Mortuary 1 Regency Place London SW1P 2EB
Installation of air conditioning unit at roof level; replacement of inverted warm roof to…
24/02772/COLBC
2024 Approved
Westminster City Council Public Mortuary 1 Regency Place London SW1P 2EB
Installation of air conditioning unit at roof level; replacement of inverted warm roof to…
24/02771/COFUL
2024 Approved
21 Maunsel Street London SW1P 2QN
1 x bay: crown reduce to previous, most recent reduction points.
24/00100/TCA
2023 Approved
83 Vincent Square London SW1P 2PF
2 x cherry (T1, front and T2, rear) and 1 x rowan (T3, rear): Crown reduce by up to 1m.
23/06897/TCA
2023 Approved
25 Maunsel Street London SW1P 2QN
1 x bay: fell
23/05441/TCA
2023 Withdrawn
Westminster School Playing Fields Vincent Square London SW1P 2PW
T54 London Plane Branch at 6m to W - Reduce by 3m leaving branch approx. 9m in length. Pr…
23/02841/TCA
2023
Westminster School Playing Fields Vincent Square London SW1P 2PW
T54 London Plane Branch at 6m to W - Reduce by 3m leaving branch approx. 9m in length. Pr…
23/02839/TCA
2022 Approved
32 Maunsel Street London SW1P 2QN
Erection of single storey rear extension at first floor.
22/08691/FULL
2022 Approved
86 Vincent Square London SW1P 2PG
Front. 1 x sweet gum (T1): Reduce crown to the most recent previous reduction points, ret…
22/07260/TCA
2022 Approved
Silvertown House 87 Vincent Square London SW1P 2PQ
Extension of the existing smoke shaft.
22/06111/FULL
2022 Approved
Westminster School Playing Fields Vincent Square London SW1P 2PW
9 x London planes ( T1, T2, T27, T46, T50, T51, T55, T65, T66): Crown clean by removal of…
22/05453/TPO
2022 Approved
31 Maunsel Street London SW1P 2QN
Replacement of the existing single glazed ground floor casement window with a double glaz…
22/05201/CLOPUD
2022 Approved
Coleridge Court 16 Regency Street London SW1P 4DB
Installation of four garage doors to existing carport within courtyard of Coleridge Court.
22/03509/FULL
2016 Approved
31 Maunsel Street London SW1P 2QN
External alterations including installation of rooflights, works to front parapet wall, r…
16/06736/CLOPUD
2016 Approved
Westminster School Playing Fields Vincent Square London SW1P 2PW
63 x London planes (T1-T5, T8-T16 and T18- T66): Crown clean. Remove trunk sucker growth…
16/07529/TPO
2016 Approved
5 Maunsel Street London SW1P 2QL
Demolition of existing ground floor extension and erection of two storey ground and first…
16/01004/FULL
2016 Refused
13 - 15 Regency Street London SW1P 4BY
Display of 2 no. mesh banners measuring 3m x 3m.
16/03920/ADV
2016 Approved
25 Maunsel Street London SW1P 2QN
1 x Bay (rear): Crown reduce by up to 3m and reshape to balance
16/03542/TCA
Westminster
Planning Authority Score
3.5/10
Below average
#221 of 296 councils
Relevant to this application:
Householder decisions

Westminster is slower than most councils at deciding householder applications, ranking #258 out of 296. Only 28% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Westminster is also one of the strictest councils - it refuses more householder applications than almost any other, with only 81% approved vs 90% nationally.

One of the strictest councils
only 81% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Westminster decision statistics
Based on MHCLG data, the year to March 2026
86%
Overall approval rate
Below avg (87%) #201 of 296
81%
Householder approved
Below avg (90%) #277 of 296
44%
Decided in 8 weeks
Below avg (63%) #258 of 296
28%
Extended time limit
Below avg (41%) #46 of 296
83%
Minor dwellings approved
12 decided (1-9 homes)
67%
Major dwellings approved
3 decided (10+ homes)
81%
Change of use approved
133 decided
4,602
Total decisions
648 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.