65 Cambridge Street London SW1V 4PS Data via plota.co.uk

26/03949/FULL - Full Planning Permission Application Approved
Extensions & alterationsUtility infrastructure

Proposal

Erection of a single storey glazed infill extension at rear lower ground level; installation of air conditioning unit in enclosure within rear yard; replacement of rear ground floor window with doors and Juliet balcony; and removal of window in rear side elevation and making good of brickwork. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
15 Jun 2026
✓
Validated
18 Jun 2026
✓
Consultation
19 Jun 2026
✓
Approved
12 Aug 2026

Approved on 12 Aug 2026 · Complex Delegated Decision · Last checked 13 Aug 2026

Documents 20

Decision & officer reports 2

PDF GRANT OF FULL PP [PE] Decision Notice · 12 Aug 2026 View ↗ PDF DELEGATED REPORT Report · 12 Aug 2026 View ↗

Statements & assessments 2

PDF DESIGN AND ACCESS STATEMENT (E) Design and Access Statement · 15 Jun 2026 View ↗ PDF NOISE IMPACT ASSESSMENT (REV 3) Noise impact assessment · 15 Jun 2026 View ↗

Plans & drawings 7

PDF EX & PROP SECTION Drawing · 15 Jun 2026 View ↗ PDF PROPOSED ELEVATIONS Drawing · 15 Jun 2026 View ↗ PDF EXISTING ELEVATIONS Drawing · 15 Jun 2026 View ↗ PDF PROPOSED PLANS (PLANNING) Drawing · 15 Jun 2026 View ↗ PDF EXISTING PLAN Drawing · 15 Jun 2026 View ↗ PDF SITE PLANS Drawing · 15 Jun 2026 View ↗ PDF SITE LOCATION PLAN Drawing · 15 Jun 2026 View ↗

Consultation & comments 1

PDF NEIGHBOUR NOTIFICATION LETTER (21D) Background Papers · 19 Jun 2026 View ↗

Other documents 8

PDF ACK-GENERAL LETTER (G/P/C) Background Papers · 19 Jun 2026 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 19 Jun 2026 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 19 Jun 2026 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 19 Jun 2026 View ↗ PDF SITE NOTICE 21 OR 28 DAYS IF T&C APPL. Background Papers · 19 Jun 2026 View ↗ PDF RECEIPT OF APPLICATION Other · 18 Jun 2026 View ↗ PDF 1ST INVALID LETTER Background Papers · 18 Jun 2026 View ↗ PDF EMAIL DATED Incoming Correspondence · 15 Jun 2026 View ↗

All documents on the council site ↗

Site constraints 9

Grade II listed: 29-49, St George's Drive Sw1
List entry 1265008 · 26 m from the pin · 12 more listed buildings within 150 m (12 Grade II)
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 the other 12 with distances
Historic England ↗
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 ↗
Pimlico 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 ↗
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.
Registered park or garden 95 m away: Eccleston Square
Its setting is a consideration for work nearby.
Registered parks and gardens, battlefields, world heritage sites and protected wrecks are designated heritage assets: harm needs clear and convincing justification.
Historic England ↗
Also on the record
Inside the City of Westminster built-up area.
Not affected
Not green belt · No scheduled monument at the site

Checked on 11 September 2026. Historic England, the Environment Agency, Natural England 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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Other new applications on this street

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Important details

Council
Westminster
Application type
Full Planning Permission Application
Postcode
SW1V 4PS
Received
15 Jun 2026
Validated
18 Jun 2026
Ward
Pimlico North
Case officer
Show
Target decision
13 Aug 2026
Decision
Application Permitted
Decision date
12 Aug 2026
Decision level
Complex Delegated Decision
Applicant
Show
Agent
Show

How this decision compares

Decided in 55 days from validation, about the council's usual 53 days. Approved, as 87% of extensions here are.

62%decided within 8 weeks
87%approved
930decided in the last year

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

Public comments

2comments received
2 objecting

8 neighbours consulted · Last counted 13 Aug 2026

Read the comments on the council site ↗

Consultation & key dates

Site or press notice
19 Jun 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
1 West Mews London SW1V 2DJ
Replacement timber sash and casement windows, replacement timber door set with double-gla…
25/07672/FULL
2025
Top Flat 49 St George's Drive London SW1V 4DG
Installation of replacement front, side and rear elevation single glazed sash windows wit…
25/07506/LBC
2025
Top Flat 49 St George's Drive London SW1V 4DG
Installation of replacement front, side and rear elevation single glazed sash windows wit…
25/07505/FULL
2025 Refused
1 West Mews London SW1V 2DJ
Replacement timber sash and casement windows and replacement of timber door set.
25/06111/FULL
2025
89 Cambridge Street London SW1V 4PY
1 x Ginko: crown lift by 0.5m, reduce lower lateral branches to ensure clearance from pro…
25/06878/TCA
2025
6 West Mews London SW1V 2DJ
1 x Fig Re-Pollard Reason for works : General Maintenance
25/06853/TCA
2025
103 Warwick Way London SW1V 1QL
The construction of a two storey rear infill extension at lower ground and ground floor l…
25/06598/FULL
2025
88 Cambridge Street London SW1V 4QG
Reinstatement of windows to the elevation of Clarendon Street.
25/06404/FULL
2025
73 Alderney Street London SW1V 4HH
Replacement of first floor railings with traditional concreter balustrade; Replacement of…
25/06051/FULL
2025 Approved
79 Cambridge Street London SW1V 4PS
1 x Japanese maple: fell
25/03307/TDD
2025
Basement Flat 57 St George's Drive London SW1V 4DF
Red Robin Tree: Reduce by 2-3m from the height and reduce the sides by 1-2m to shape Reas…
25/01231/TCA
2025
73 Alderney Street London SW1V 4HH
Installation of air conditioning condensing unit within an acoustic enclosure on the rear…
25/00039/FULL
2024
Top Flat 59 St George's Drive London SW1V 4DF
Replacement of windows of the third and fourth floor flat. (Linked to 24/08038/FULL)
24/08628/LBC
2024
89 Cambridge Street London SW1V 4PY
Conversion of vault to habitable accommodation, replacement of staircase in front lightwe…
24/07389/FULL
2024
Eaton Square School 55 - 57 Eccleston Square London SW1V 1PH
Installation of a temporary fixture to front elevation (retrospective). (Linked with 24/0…
24/06983/LBC
2024
Eaton Square School 55 - 57 Eccleston Square London SW1V 1PH
Installation of a temporary fixture to front elevation (retrospective). (Linked with 24/0…
24/06982/FULL
2024
73 Alderney Street London SW1V 4HH
Alterations to external railing and boundary treatement and reconfiguration of external s…
24/06079/FULL
2024 Approved
6 West Mews London SW1V 2DJ
1 x fig tree (courtyard): reduce crown to previous, most recent reduction points. Remove…
24/03043/TCA
2024
Flat 2 And 3 59 Cambridge Street London SW1V 4PS
Confirmation that the proposed reconfiguration of the internal arrangement of the two exi…
24/05023/CLOPUD
2024
Top Floor Flat 47 St George's Drive London SW1V 4DG
Replacement of front and rear windows with double glazed sash/casement windows; instateme…
24/04383/LBC
2018 Approved
West Mews London
1 x fig tree (courtyard) - reduce crown to previous, most recent reduction points
18/08136/TCA
2018 Withdrawn
38 - 40 Eccleston Square London SW1V 1PB
Replace four sets of single glazed balcony doors at first floor front elevation and the a…
18/05197/LBC
2018 Withdrawn
38 - 40 Eccleston Square London SW1V 1PB
Replacement of four sets of balcony doors at first floor front elevation and the asphalt…
18/05196/FULL
2018 Approved
59 Cambridge Street London SW1V 4PS
Alterations to shopfronts, creation of lightwell and installation of railings.
18/02853/FULL
2018 Approved
99 Warwick Way London SW1V 1QL
Erection of infill extension at rear upper ground floor level with balcony.
18/04696/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