17 Chapel Street London SW1X 7BY Data via plota.co.uk

26/04885/LBC - Listed Building Consent Application Pending
Extensions & alterationsListed buildings

Proposal

Erection of an additional storey at main roof level and a rear extension at lower ground floor level with terrace over and associated internal alterations (Linked with ) Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
21 Jul 2026
Decision
Expected by 15 Sept 2026

This application is under consideration - no decision has been issued yet. Plota predicts a decision around 14 Sept 2026, from Westminster's recent extensions. The consultation period closed on 26 Aug 2026.

Documents 10

Statements & assessments 2

PDF HERITAGE STATEMENT Heritage Statement · 21 Jul 2026 View ↗ PDF DESIGN & ACCESS STATEMENT Design and Access Statement · 21 Jul 2026 View ↗

Plans & drawings 5

PDF SITE AND LOCATION PLAN Location Plan · 21 Jul 2026 View ↗ PDF EXISTING PLANS Drawing · 21 Jul 2026 View ↗ PDF PREVIOULSY APPROVED PLANS 582 507 REV A Drawing · 21 Jul 2026 View ↗ PDF PROPOSED PLANS Drawing · 21 Jul 2026 View ↗ PDF DRAWING PLANNING ISSUE SHEET Background Papers · 21 Jul 2026 View ↗

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 21 Jul 2026 View ↗

Other documents 2

PDF RECEIPT OF APPLICATION Other · 23 Jul 2026 View ↗ PDF COVER LETTER Background Papers · 21 Jul 2026 View ↗

All documents on the council site ↗

Site constraints 7

Grade II listed: 15-18, Chapel Street Sw1
List entry 1066316 · 4 m from the pin · 22 more listed buildings within 150 m (2 Grade I, 1 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 22 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 Named permitted development rights are withdrawn here.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.
Also on the record
Registered park or garden 117 m away: Buckingham Palace; Inside the City of Westminster built-up area.
Not affected
Outside flood zones 2 and 3 · 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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Important details

Council
Westminster
Application type
Listed Building Consent Application
Postcode
SW1X 7BY
Received
21 Jul 2026
Validated
21 Jul 2026
Ward
Knightsbridge & Belgravia
Case officer
Show
Target decision
15 Sept 2026
Applicant
Show
Agent
DRY Architects Ltd

Decision outlook

Day 55, past Westminster's usual 53 days for extensions. 88% are decided within thirteen weeks, so most likely by 20 Oct 2026.

Day 551 days to the 56-day target
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

No public comments yet.

Last counted 12 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15100993
Comments by
26 Aug 2026
Site or press notice
5 Aug 2026
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

2025
Details of all new external windows and doors, timber screen/trellis to the roof terrace…
25/07612/ADFULL
Within ~100m

Nearby activity

2025 Approved
37 Belgrave Square London SW1X 8NS
Prune N / NW side to give approx. 2.5m clearance from the existing scaffolding for the pr…
25/08093/TCA
2025
38 Chapel Street London SW1X 7DD
Erection of a mansard extension at fifth floor level.
25/06851/FULL
2025 Approved
28 Chapel Street London SW1X 7DD
Installation of an airbrick within the front lightwell at lower ground floor level, Repla…
25/04080/LBC
2025 Approved
28 Chapel Street London SW1X 7DD
Installation of an airbrick within the front lightwell at lower ground floor level, Repla…
25/04079/FULL
2025
10 Chapel Street London SW1X 7BY
Erection of a basement extension, replacement of the existing conservatory at rear lower…
25/01535/FULL
2025
19 Grosvenor Place London SW1X 7HN
Carry out repairs to all masonry elements subject to inspection from scaffolding; remedia…
25/01243/LBC
2025
18 Chapel Street London SW1X 7BY
Erection of rear extensions at lower ground floor and ground floor rear extensions with t…
25/00908/LBC
2025
18 Chapel Street London SW1X 7BY
Erection of rear extensions at lower ground floor and ground floor rear extensions with t…
25/00907/FULL
2025
37 Belgrave Square London SW1X 8NS
Provision of lead weathering capping to the parapets on the main roof and plinths/cornice…
25/00485/LBC
2025
3 Montrose Place London SW1X 7DU
Enlargement of two windows to allow for two double glazed French windows, with the creati…
25/00202/FULL
2024
37 Belgrave Square London SW1X 8NS
T1 - London plane, Large mature tree, Works; - Crown lift by removing laterals and/or sub…
24/08889/TCA
2024
Lower Maisonette 24 Chester Street London SW1X 7BL
Erection of a single storey rear extension at lower ground floor level; replacement of re…
24/07031/LBC
2024
Lower Maisonette 24 Chester Street London SW1X 7BL
Erection of a single storey rear extension at lower ground floor level; replacement of re…
24/07030/FULL
2024
19 Chapel Street London SW1X 7BY
(T1) - Magnolia(M.soulangea) -reduce lateral spread over LHS No.18 & from neighbouring ga…
24/06462/TCA
2024
12 Chester Street London SW1X 7BB
Excavation of a new basement level. Replacement of existing rear extension at first, seco…
24/05883/FULL
2024
12 Chester Street London SW1X 7BB
Excavation of a new basement level. Replacement of existing rear extension at first, seco…
24/05884/LBC
2024
37 Belgrave Square London SW1X 8NS
Installation of 14 replacement existing CCTV cameras to the building. CONFIDENTIAL APPLIC…
24/05182/LBC
2024 Approved
13 Grosvenor Place London SW1X 7HH
Erection of two timber privacy screens to rear lower and upper ground floor levels adjace…
24/02919/FULL
2024 Approved
13 Grosvenor Place London SW1X 7HH
Erection of two timber privacy screens to rear.
24/02823/LBC
2024 Approved
3 Montrose Place London SW1X 7DU
Replacement of balustrade at roof level with metal railings and box planters to perimeter…
24/01347/FULL
2017 Refused
16 Chapel Street London SW1X 7BY
Creation of basement, removal of lower ground conservatory, extensions to the rear at low…
17/04149/FULL
2017 Withdrawn
15 Chester Street London SW1X 7BB
Variation of condition 1 of listed building consent dated 21 September 2016 ( RN 16/07338…
17/03993/LBC
2017 Withdrawn
15 Chester Street London SW1X 7BB
Variation of condition 1 of planning permission dated 21 September 2016 ( RN 16/07143/FUL…
17/03848/FULL
2017 Withdrawn
41 Chapel Street London SW1X 7DD
Replacement of existing Mohogany doors with replica.
17/03789/LBC
2017 Approved
31 Chester Street London SW1X 7BL
Variation of Condition 1 of listed building consent dated 26 October 2015 (15/05659/LBC)…
17/00197/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