6 Wilton Street London SW1X 7AF Data via plota.co.uk

26/01274/LBC - Listed Building Consent Application Approved
Extensions & alterations

Proposal

Removal of existing roof and rear third floor mansard and replacement with fourth floor mansard extension; replacement of front third floor windows and new rear third floor windows; internal alterations. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
27 Feb 2026
✓
Approved
5 Aug 2026

Approved on 5 Aug 2026 · Complex Delegated Decision · Last checked 10 Aug 2026

Documents 45

Decision & officer reports 2

PDF GRANT OF LISTED BUILDING CONSENT [PE] Decision Notice · 5 Aug 2026 View ↗ PDF DELEGATED REPORT Report · 5 Aug 2026 View ↗

Statements & assessments 5

PDF HERITAGE STATEMENT ADDENDUM Heritage Statement · 15 Jul 2026 View ↗ PDF HERITAGE STATEMENT Heritage Statement · 2 Mar 2026 View ↗ PDF PLANNING STATEMENT Planning Statement · 2 Mar 2026 View ↗ PDF HERITAGE STATEMENT Superseded document · 27 Feb 2026 View ↗ PDF PLANNING STATEMENT Superseded document · 27 Feb 2026 View ↗

Plans & drawings 25

PDF EXISTING & PROPOSED FRONT & REAR ELEVATIONS Drawing · 15 Jul 2026 View ↗ PDF PROPOSED FLOOR PLANS Drawing · 15 Jul 2026 View ↗ PDF PROPOSED SECTION C.C Drawing · 15 Jul 2026 View ↗ PDF LOCATIONPLAN Drawing · 2 Mar 2026 View ↗ PDF LOCATION PLAN Drawing · 2 Mar 2026 View ↗ PDF EXISTING BASEMENT PLAN Drawing · 2 Mar 2026 View ↗ PDF EXISTING SECTION A.A Drawing · 2 Mar 2026 View ↗ PDF EXISTING SECTION B.B Drawing · 2 Mar 2026 View ↗ PDF EXISTING SECTION C.C Drawing · 2 Mar 2026 View ↗ PDF PROPOSED BASEMENT PLAN Superseded document · 2 Mar 2026 View ↗ PDF PROPOSED SECTION A.A & NEW DOOR DETAILS Drawing · 2 Mar 2026 View ↗ PDF PROPOSED SECTION C.C Superseded document · 2 Mar 2026 View ↗ PDF EXISTING & PROPOSED ELEVATIONS Superseded document · 2 Mar 2026 View ↗ PDF PROPOSED SECTION B.B & ROOF PLAN Drawing · 2 Mar 2026 View ↗ PDF LOCATION PLAN Superseded document · 27 Feb 2026 View ↗ PDF LOCATION PLAN Superseded document · 27 Feb 2026 View ↗ PDF EXISTING BASEMENT PLAN Superseded document · 27 Feb 2026 View ↗ PDF EXISTING SECTION A.A Superseded document · 27 Feb 2026 View ↗ PDF EXISTING SECTION B.B Superseded document · 27 Feb 2026 View ↗ PDF EXISTING SECTION C.C Superseded document · 27 Feb 2026 View ↗ PDF EXISTING & PROPOSED ELEVATIONS Superseded document · 27 Feb 2026 View ↗ PDF PROPOSED BASEMENT PLANS Superseded document · 27 Feb 2026 View ↗ PDF PROPOSED SECTION B.B & ROOF PLAN Superseded document · 27 Feb 2026 View ↗ PDF PROPOSED SECTION A.A & NEW DOOR DETAILS Superseded document · 27 Feb 2026 View ↗ PDF PROPOSED SECTION C.C Superseded document · 27 Feb 2026 View ↗

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 2 Mar 2026 View ↗

Consultation & comments 9

PDF HISTORIC BUILDING Consultee Comment · 12 May 2026 View ↗ PDF OBJECTION Objection Comment · 21 Apr 2026 View ↗ PDF HISTORIC ENGLAND Consultee Comment · 17 Apr 2026 View ↗ PDF HISTORIC ENGLAND Consultee Comment · 17 Apr 2026 View ↗ PDF OBJECTION Objection Comment · 14 Apr 2026 View ↗ PDF CNSLT-CONSULTEE CLOUD STD Background Papers · 10 Apr 2026 View ↗ PDF ECNSLT-STD EXT CONSULTEES Background Papers · 10 Apr 2026 View ↗ PDF PUBLIC COMMENT Public Comment · 10 Apr 2026 View ↗ PDF OBJECTION Objection Comment · 10 Apr 2026 View ↗

Other documents 3

PDF ACK-GENERAL LETTER (G/P/C) Background Papers · 1 Apr 2026 View ↗ PDF RECEIPT OF APPLICATION Background Papers · 27 Mar 2026 View ↗ PDF APPLICATIONFORMREDACTED Superseded document · 27 Feb 2026 View ↗

All documents on the council site ↗

Associated applications 2

Site constraints 10

Grade II listed: 4-15, Wilton Street Sw1
List entry 1357380 · The pin is inside its outline · 24 more listed buildings within 150 m (5 Grade II*, 19 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 24 with distances
Historic England ↗
Belgravia 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 ↗
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
National infrastructure project 870 m away: Thames Tideway Tunnel
The site is 870 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, 218 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 ↗
Also on the record
Registered park or garden 111 m away: Buckingham Palace; Heritage at risk 82 m away: Church of St Peter, Eaton Square, Westminster; Inside the City of Westminster built-up area; Public transport access: PTAL 6b (excellent), TfL 2023, for the 100 m square.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 6 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.

Building

Floor area227 m² (2,443 sq ft)
Energy ratingD (55 out of 100), could reach C
PropertyMid-terrace house, 8 habitable rooms
BuiltBefore 1900
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in November 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
Listed Building Consent Application
Postcode
SW1X 7AF
Received
27 Feb 2026
Validated
27 Feb 2026
Ward
Knightsbridge & Belgravia
Case officer
Show
Target decision
24 Apr 2026
Decision
Application Permitted
Decision date
5 Aug 2026
Decision level
Complex Delegated Decision
Applicant
Show

How this decision compares

Decided in 159 days from validation, 104 days slower than Westminster's median of 55 for extensions. Approved, as 88% of extensions here are.

56%decided within 8 weeks
88%approved
1,674decided in the last year

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

Public comments

1comment received
1 objecting

1 neighbour consulted · Last counted 10 Aug 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14741870
Planning Portal ref
PP-14741870
Comments by
6 May 2026
Site or press notice
15 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
13 Upper Belgrave Street London SW1X 8BA
Installation of fan coil units within concealed joinery and an external condenser on the…
25/08079/LBC
2025
13 Upper Belgrave Street London SW1X 8BA
Installation of fan coil units within concealed joinery and an external condenser on the…
25/08078/FULL
2025
14 Wilton Street London SW1X 7AF
Alterations including infill extensions at basement and ground floor to the rear of premi…
25/07927/FULL
2025
14 Wilton Street London SW1X 7AF
Alterations including infill extensions at basement and ground floor to the rear of premi…
25/07928/LBC
2025 Approved
St Peters Church Eaton Square London SW1W 0HQ
Request to bring the whole building under Faculty Jurisdiction.
25/07448/EEN
2025 Approved
13 Upper Belgrave Street London SW1X 8BA
Internal alterations at first and mezzanine floor levels.
25/05795/LBC
2025 Withdrawn
23 Chester Street London SW1X 7BL
Installation of new lift shaft up the rear elevation of the building.
25/06250/LBC
2025 Withdrawn
23 Chester Street London SW1X 7BL
Installation of new lift shaft up the rear elevation of the building.
25/06021/FULL
2025
40 Grosvenor Place London SW1X 7HJ
Works at lower ground floor including the replacement of glass with louvre in one window…
25/07078/FULL
2025 Approved
3 Wilton Street London SW1X 7AF
Alterations to basement and ground floors including conversion of lounge to a bedroom and…
25/05488/LBC
2025
40 Grosvenor Place London SW1X 7HJ
Works at lower ground floor including excavation works for extension of lift pit and crea…
25/06529/FULL
2025
Flat 3 6 Upper Belgrave Street London SW1X 8BD
Internal Alterations.
25/06556/LBC
2025
2 Wilton Street London SW1X 7AF
Installation of security bars to front windows of basement and ground floors. (Linked to…
25/06551/LBC
2025
2 Wilton Street London SW1X 7AF
Installation of security bars to front windows of basement and ground floors. (Linked to…
25/06550/FULL
2025
Flat 3 6 Upper Belgrave Street London SW1X 8BD
Replacement of a window with timber French doors with new balcony at rear third floor lev…
25/06479/LBC
2025
Flat 3 6 Upper Belgrave Street London SW1X 8BD
Replacement of a window with timber French doors with new balcony at rear third floor lev…
25/06478/FULL
2025 Approved
11 Wilton Street London SW1X 7AF
1 x Bay: crown reduce by up to 1.5m on all aspects, retaining sufficient furnishing growt…
25/05495/TCA
2025 Approved
13 Upper Belgrave Street London SW1X 8BA
Installation of a condenser on the roof of the property and replacement glazing in existi…
25/02884/FULL
2025 Approved
40 Grosvenor Place London SW1X 7HJ
Works at lower ground floor including excavation works for extension of lift pit and crea…
25/02927/FULL
2025 Approved
13 Upper Belgrave Street London SW1X 8BA
Internal layout alterations to the master suite, and the installation of a chimney breast…
25/03351/LBC
2019 Approved
16A Wilton Street London SW1X 7AG
Internal alterations to lower ground floor including the removal of partitions.
19/01679/LBC
2019 Approved
16 Little Chester Street London SW1X 7AP
Lowering of the finished floor level of the lower ground floor.
19/01272/FULL
2019 Approved
Ground Floor South East 33 Grosvenor Place London SW1X 7HY
Confirmation that use of part first floor as an outpatient clinic is ancillary to the pri…
19/00938/CLOPUD
2018 Approved
Flat B 7 - 8 Upper Belgrave Street London SW1X 8BD
Installation of air conditioning unit and acoustic screen at roof level in connection wit…
18/10832/FULL
2019 Refused
Flat B 7-8 Upper Belgrave Street London SW1X 8BD
Installation of air conditioning unit and acoustic screen at roof level and associated in…
19/00725/LBC
Westminster
Planning Authority Score
3.5/10
Below average
#221 of 296 councils
Relevant to this application:
Other 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

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.