Flat A 11 Connaught House Clifton Gardens London W9 1AL Data via plota.co.uk

26/01310/FULL - Full Planning Permission Application Approved
Extensions & alterations

Proposal

Installation of vacuum glazing to the existing windows and doors at ground and lower ground floor on front facade and at ground and lower ground to the bay on the rear facade. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
2 Mar 2026
✓
Validated
6 May 2026
✓
Approved
20 May 2026

Approved on 20 May 2026 · Delegated Decision · Last checked 25 Sept 2026

Documents 19

Decision & officer reports 2

PDF GRANT OF FULL PP [PE] Decision Notice · 20 May 2026 View ↗ PDF DELEGATED REPORT Report · 20 May 2026 View ↗

Statements & assessments 1

PDF HERITAGE STATEMENT Heritage Statement · 30 Apr 2026 View ↗

Plans & drawings 9

PDF EXISTING AND PROPOSED WINDOW DRAWING Drawing · 6 May 2026 View ↗ PDF SECTIONS SHOWING VACUUM GLAZING Drawing · 30 Apr 2026 View ↗ PDF INTERNAL ELEVATIONS OF WINDOWS Drawing · 17 Mar 2026 View ↗ PDF INTERNAL ELEVATIONS OF WINDOWS Drawing · 17 Mar 2026 View ↗ PDF PROPOSED REAR WINDOW DETAIL Drawing · 13 Mar 2026 View ↗ PDF PROPOSED FRONT WINDOW DETAIL Drawing · 13 Mar 2026 View ↗ PDF PROPOSED LOWER GROUND FLOOR SIDE DOOR DETAIL Drawing · 13 Mar 2026 View ↗ PDF LOCATIONPLAN Location Plan · 2 Mar 2026 View ↗ PDF DOUBLE GLAZING TECHNICAL SPECIFICATIONS Drawing · 2 Mar 2026 View ↗

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 2 Mar 2026 View ↗

Consultation & comments 1

PDF NEIGHBOUR NOTIFICATION LETTER (21D) Background Papers · 31 Mar 2026 View ↗

Other documents 5

PDF 2ND INVALID LETTER Background Papers · 5 May 2026 View ↗ PDF DOUBLE GLAZING TECHNICAL SPECIFICATIONS Background Papers · 30 Apr 2026 View ↗ PDF PHOTOGRAPHS OF EXISTING WINDOWS AND FACADES Photo · 13 Mar 2026 View ↗ PDF 1ST INVALID LETTER Background Papers · 10 Mar 2026 View ↗ PDF SCOPE OF WORK AND PHOTOGRAPHS SHOWING AFFECTED WINDOWS Background Papers · 2 Mar 2026 View ↗

All documents on the council site ↗

Associated applications 2

Site constraints 8

Maida Vale 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.
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 ↗
34 listed buildings within 150 m
Nearest: 9A, RANDOLPH ROAD W9 (See details for further address information), Grade II, 44 m away · 34 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 34 with distances
Historic England ↗
Also on the record
Inside the City of Westminster built-up area; Public transport access: PTAL 6a (excellent), TfL 2023, for the 100 m square; National infrastructure project 1608 m away: London Strategic Heat Main Project, at pre-application; Priority habitat 48 m away: Deciduous woodland.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 2 November 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.

Building

Floor area146 m² (1,572 sq ft)
Energy ratingD (66 out of 100), could reach C
PropertyMid-terrace maisonette, 5 habitable rooms
BuiltBefore 1900
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in October 2024, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Westminster
Application type
Full Planning Permission Application
Postcode
W9 1AL
Received
2 Mar 2026
Validated
6 May 2026
Ward
Little Venice
Case officer
Show
Target decision
1 Jul 2026
Decision
Application Permitted
Decision date
20 May 2026
Decision level
Delegated Decision
Applicant
Show

How this decision compares

Decided in 14 days from validation, 41 days faster than Westminster's median of 55 for extensions. Approved, as 88% of extensions here are.

56%decided within 8 weeks
88%approved
1,937decided 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.

18 neighbours consulted · Last counted 25 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14717051
Planning Portal ref
PP-14717051
Comments by
29 Apr 2026
Site or press notice
8 Apr 2026
Env. assessment
No

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025 Approved
38 Warwick Avenue London W9 2PT
Partial demolition and replacement of the front garden wall facing into Warwick Avenue, i…
25/04801/LBC
2025 Approved
38 Warwick Avenue London W9 2PT
Partial demolition and replacement of the front garden wall facing into Warwick Avenue, i…
25/04800/FULL
2025 Approved
26 Warwick Avenue London W9 2PT
Installation of fire suppression system on the ceiling of the basement, lower ground and…
25/05263/LBC
2025 Approved
9A Randolph Road London W9 1AN
2 x lime (T3 & T5): Crown reduce to previous, most recent reduction points, retaining sel…
25/05950/TCA
2025 Approved
9A Randolph Road London W9 1AN
1 x false acacia (T1): Reduce the recent regrowth (trunk and lower canopy) to previous mo…
25/05842/TPO
2025
26 Warwick Avenue London W9 2PT
Repalcement windows and doors (Linked to 25/06716/LBC)
25/06715/FULL
2025
26 Warwick Avenue London W9 2PT
Repalcement windows and doors (Linked to 25/06715/FULL)
25/06716/LBC
2025
Flat A 38 Warwick Avenue London W9 2PT
Erection of side boundary wall, external side staircase, and lower ground side extension…
25/05934/LBC
2025
Flat A 38 Warwick Avenue London W9 2PT
Erection of side boundary wall, external side staircase, and lower ground side extension…
25/05933/FULL
2025 Approved
26 Warwick Avenue London W9 2PT
Minor alterations to internal rooms at basement and lower ground floor levels. Replacing…
25/03909/LBC
2025 Approved
Land In Front Of 2 - 22 Clifton Gardens London W9 1DT
T 1- 10 10 x Sorbus intermedia: crown raise over footpath to a height of 3m and over road…
25/05283/TCA
2025 Approved
Pond Field House 24 Clifton Gardens London W9 1DS
2 x lime (T1 and T2): crown reduce to previous, most recent reduction points, retaining s…
25/04755/TCA
2025 Approved
Cumberland House Clifton Gardens London W9 1DX
T1 1 x false acacia: crown reduce to previous, most recent reduction points, retaining sh…
25/04399/TPO
2025
Cumberland House Clifton Gardens London W9 1DX
T4,T5 2 x lime: crown reduce to previous, most recent reduction points, retaining shorten…
25/04175/TCA
2025
26 Warwick Avenue London W9 2PT
Replacement of the existing stone staircase from the lower ground floor to the upper grou…
25/03328/LBC
2025
34 Warwick Avenue London W9 2PT
Replacement of two sash windows with two french doors on the front facade of the lower gr…
25/02855/LBC
2025
34 Warwick Avenue London W9 2PT
Replacement of two sash windows with two french doors on the front facade of the lower gr…
25/02854/FULL
2025 Approved
24 Warwick Avenue London W9 2PT
T1 and T2 2 x lime: crown reduce to previous, most recent reduction points, retaining sel…
25/01866/TPO
2025
32 Warwick Avenue London W9 2PT
1 x bay (T1, rear): Reduce height by up to 3m & sides by 2m to create more compact canopy…
25/01582/TCA
2024
Flat A 38 Warwick Avenue London W9 2PT
Rear extension at lower ground and upper ground levels; side extensions to both levels; r…
24/09020/FULL
2019 Approved
17 Randolph Road London W9 1AN
1 x cherry (front): Crown reduce by about 1.5m; to suitable secondary growth points. Crow…
19/04784/TCA
2019 Approved
Cumberland House Clifton Gardens London W9 1DX
1 x Robinia (T1): crown reduce to previous, most recent reduction points, retaining furni…
19/03805/TPO
2019 Approved
Cumberland House Clifton Gardens London W9 1DX
1 x lime T4: crown lift to 3m and reduce overlong branches by up to 1m to shape
19/04055/TCA
2019 Approved
Flat A 38 Warwick Avenue London W9 2PT
Replacement lower ground floor extension, associated removal of external staircase and al…
19/02983/LBC
2019 Approved
Flat A 38 Warwick Avenue London W9 2PT
Removal of the existing metal spiral staircase and the single storey extension with integ…
19/02982/FULL
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

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.