20 Conduit Street London W1S 2XW Data via plota.co.uk

26/02022/FULL - Full Planning Permission Application Approved

Proposal

Installation of two conservation style rooflights at roof level, installation of one rear casement window at fifth floor level, replacement of existing maintenance access door with new glazed door, and installation of two new MVHR extract and intake roof cowls. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
26 Mar 2026
✓
Consultation
21 Apr 2026
✓
Approved
27 May 2026

Approved on 27 May 2026 · Delegated Decision · Last checked 4 Aug 2026

Documents 28

Decision & officer reports 2

PDF GRANT OF FULL PP [PE] Decision Notice · 27 May 2026 View ↗ PDF DELEGATED REPORT Report · 27 May 2026 View ↗

Statements & assessments 4

PDF FULL PPLBC PLANNING STATEMENT Planning Statement · 26 Mar 2026 View ↗ PDF PLANNING STATEMENT INCLUDED IN HERITAGE STATEMENT Background Papers · 26 Mar 2026 View ↗ PDF SUSTAINABLE DESIGN STATEMENT Background Papers · 26 Mar 2026 View ↗ PDF DAS - FIFTH FLOOR LBC Design and Access Statement · 26 Mar 2026 View ↗

Plans & drawings 12

PDF FIFTH FLOOR PLANNING - C Drawing · 26 Mar 2026 View ↗ PDF FLOOR PLAN - EXISTING INCLUDED IN FLOOR PLAN Background Papers · 26 Mar 2026 View ↗ PDF ROOF LEVEL PLANNING - C Drawing · 26 Mar 2026 View ↗ PDF ROOF PLAN - PROPOSED INCLUDED IN ROOF PLAN - EXISTING Background Papers · 26 Mar 2026 View ↗ PDF SITE LOCATION PLAN - 0 Location Plan · 26 Mar 2026 View ↗ PDF BLOCK PLAN - 0 Background Papers · 26 Mar 2026 View ↗ PDF REAR ELEVATION - C Drawing · 26 Mar 2026 View ↗ PDF ELEVATION (REAR) - PROPOSED INCLUDED IN ELEVATION (REAR) - EXISTING Background Papers · 26 Mar 2026 View ↗ PDF FRONT ELEVATION - 0 Drawing · 26 Mar 2026 View ↗ PDF ELEVATION (FRONT) - PROPOSED INCLUDED IN ELEVATION (FRONT) - EXISTING Background Papers · 26 Mar 2026 View ↗ PDF EXISTING SECTION - C Drawing · 26 Mar 2026 View ↗ PDF PROPOSED SECTION - C Drawing · 26 Mar 2026 View ↗

Application forms 1

PDF APPLICATION FORM REDACTED Application Form · 26 Mar 2026 View ↗

Consultation & comments 1

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

Other documents 8

PDF ACK-GENERAL LETTER (G/P/C) Background Papers · 21 Apr 2026 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 21 Apr 2026 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 21 Apr 2026 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 21 Apr 2026 View ↗ PDF SITE NOTICE 21 OR 28 DAYS IF T&C APPL. Background Papers · 21 Apr 2026 View ↗ PDF RECEIPT OF APPLICATION Other · 7 Apr 2026 View ↗ PDF 1ST INVALID LETTER Background Papers · 7 Apr 2026 View ↗ PDF ATTACHMENT SUMMARY Background Papers · 26 Mar 2026 View ↗

All documents on the council site ↗

Associated applications 4

Site constraints 8

Grade II listed: 20, Conduit Street W1
List entry 1066974 · 0 m from the pin · 37 more listed buildings within 150 m (1 Grade I, 3 Grade II*, 33 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 37 with distances
Historic England ↗
Mayfair 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 ↗
2 Article 4 directions
Article 4 Basement Development Permitted Rights Removed · Article 4 Direction Class E To C3 In Central Activities Zone. 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 2.5
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 ↗
Town centre: West End
A designated centre in the London Plan.
Shops, services and active frontages are protected in centres, and main town centre uses are steered here first.
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.
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
Full Planning Permission Application
Postcode
W1S 2XW
Received
26 Mar 2026
Validated
26 Mar 2026
Ward
West End
Case officer
Show
Target decision
21 May 2026
Decision
Application Permitted
Decision date
27 May 2026
Decision level
Delegated Decision
Agent
Savills (UK) Ltd

How this decision compares

Decided in 62 days from validation, 4 days slower than Westminster's median of 58 for full applications. Approved, as 86% of full applications here are.

48%decided within 8 weeks
86%approved
612decided in the last year

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

Public comments

No public comments yet.

60 neighbours consulted · Last counted 4 Aug 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14788705
Site or press notice
21 Apr 2026
Env. assessment
No

Historical activity at this location

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

This property

Previous applications at this address

2025 Approved
Installation of replacement ground floor primary office entrance door; Retention of fanli…
25/06305/LBC
2025 Approved
Installation of replacement ground floor primary office entrance door; Retention of fanli…
25/06304/FULL
2025
Rear extension of an existing fifth floor plant room converted into office space (E use)…
25/02292/LBC
2025
Rear extension of an existing fifth floor plant room converted into office space (E use)…
25/02291/FULL
2021 Approved
Removal of rear steel staircase and installation of Juliet balconies. Replacement of slat…
21/05415/LBC
2021 Approved
Removal of rear steel staircase and installation of Juliet balconies. Replacement of slat…
21/05414/FULL
2018 Approved
Display of advert on hoarding measuring 3.60m x 5.60m from 3 April 2018 to 30 September 2…
18/02560/ADV
2017 Approved
Display of externally illuminated fascia sign measuring 0.2m x 2.1m and halo illuminated…
17/10694/ADV
2017 Approved
Internal and external alterations, including works to shopfront, new fascia sign and inte…
17/10691/LBC
2017 Approved
Alterations to shopfront
17/10690/FULL
2017 Approved
Display for a temporary period of six months of a non illuminated estate agents board loc…
17/04639/AD7
2016 Approved
Display for a temporary period of six months of a non illuminated estate agents board loc…
16/11044/AD7
Within ~100m

Nearby activity

2025
Washington House 40 - 41 Conduit Street London W1S 2YQ
Use of basement and part ground floor as dual alternative restaurant or retail (Class E)…
25/07055/FULL
2025
38 Maddox Street London W1S 1PY
Display of externally illuminated hanging sign measuirng 0.9m X 1.35m, externally illumin…
25/06924/ADV
2025 Approved
31 - 33 Maddox Street London
Installation of new rooflight windows at 5th floor side (south) elevation.
25/04528/FULL
2025 Approved
28 New Bond Street London W1S 2RJ
Display of externally illuminated Christmas garlands framing the store front window measu…
25/05999/ADV
2025
26 - 27 Conduit Street London W1S 2XX
Reinstatement of four windows at fifth floor level on the Conduit Street elevation.
25/06184/FULL
2025 Approved
28 New Bond Street London W1S 2RJ
Display of four externally illuminated festive crossings, festive gateways and festive no…
25/05344/ADV
2025
4 Mill Street London W1S 2AX
Erection of a rear roof extension at third floor level with a sedum roof to the rear; rep…
25/05998/FULL
2025 Approved
Basement And Ground Floor And Mezzanine 45 Conduit Street London W1S 2YN
Display for a temporary period of six months of a non-illuminated estate agent board loca…
25/05054/AD7
2025
25 - 27 St George Street London W1S 1FS
Alterations to the elevations on St. George St and Masons Arms Mews; removal of the car l…
25/01410/FULL
2025
Conduit Street London
Display of illuminated hanging decorations measuring 2.5m x 11m suspended by catenary wir…
25/00788/ADV
2024 Approved
Basement And Ground Floor 14 - 15 Conduit Street London W1S 2XJ
Display of non-illuminated vinyl sheets measuring 3.2m X 0.72m, 3.2m X 0.72m, 3.2m X 0.72…
24/08469/ADV
2024
28 - 29 St George Street London W1S 2FD
Variation of condition 1 of planning permission dated 27th March 2024 (RN:23/07891/FULL)…
24/07280/FULL
2024
The Westbury Hotel 37 Conduit Street London W1S 2YF
Alterations to the facade of the 7th and 8th floors of hotel being developed pursuant to…
24/06071/FULL
2024
56 - 60 Conduit Street London W1S 2YZ
Part demolition of existing buildings including: first floor to 11 New Burlington Place t…
24/05801/FULL
2024
43 Conduit Street London W1S 2YJ
Replacement of ground floor retail glazing and replacement with new clear security rated…
24/05312/LBC
2024
43 Conduit Street London W1S 2YJ
Replacement of ground floor retail glazing and replacement with new clear security rated…
24/05311/FULL
2024 Approved
32 - 33 New Bond Street London W1S 2RS
Display of halo illuminated fascia lettering measuring 1.55m x 0.264m, two sets of facia…
24/01697/ADV
2024
Basement To First Floor Savile House 14 Coach And Horses Yard London W1S 2EJ
Conversion of existing 1st floor commercial to a self-contained residential unit (Class 3…
24/04017/FULL
2024
43 Conduit Street London W1S 2YJ
Internal alterations to window privacy blinds including replacement and upgrade of existi…
24/03898/LBC
2024
43 Conduit Street London W1S 2YJ
Display of one internally illuminated projecting sign measuring 0.3m x 1.06m, three non i…
24/03897/ADV
2021 Approved
Conduit Street London
Display of four cross-street Christmas light festoon arches for a temporary period
21/06548/ADV
2021 Approved
33 Maddox Street London W1S 2PB
Display of one externally illuminated fascia sign measuring 3.5m x 0.75m and one external…
21/06074/ADV
2021 Approved
28 New Bond Street London W1S 2RJ
Display of non-illuminated 4-yard flags suspended across the street on catenary wires at…
21/04815/ADV
2021 Approved
37 - 38 New Bond Street London W1S 2RU
Display of an internally illuminated (letters only) fascia sign measuring 0.25m x 1.07m…
21/05754/ADV
2021 Approved
Washington House 40-41 Conduit Street London W1S 2YQ
Use of part basement and part ground floor as a restaurant (Class E) and use of part base…
21/02880/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