45 New Cavendish Street London W1G 9TJ Data via plota.co.uk

25/07901/FULL - Full Planning Permission Application Approved

Proposal

Use of part of the lower ground floor for retail purposes (Class E). (Linked with 25/07902/LBC) Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
31 Oct 2025
✓
Validated
4 Nov 2025
✓
Consultation
7 Nov 2025
✓
Approved
4 Mar 2026

Approved on 4 Mar 2026 · Delegated Decision · Last checked 9 Oct 2026

Documents 16

Decision & officer reports 2

PDF GRANT OF FULL PP [PE] Decision Notice · 4 Mar 2026 View ↗ PDF DELEGATED REPORT Report · 4 Mar 2026 View ↗

Statements & assessments 1

PDF DESIGN AND ACCESS STATEMENT Design and Access Statement · 31 Oct 2025 View ↗

Plans & drawings 3

PDF PROPOSED PLANS - SOUND INSULATION HATCHED IN RED Drawing · 4 Nov 2025 View ↗ PDF PROPOSED PLANS Drawing · 4 Nov 2025 View ↗ PDF EXISTING PLANS Drawing · 31 Oct 2025 View ↗

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 31 Oct 2025 View ↗

Consultation & comments 1

PDF NEIGHBOUR NOTIFICATION LETTER (21D) Background Papers · 7 Nov 2025 View ↗

Other documents 8

PDF ACK-GENERAL LETTER (G/P/C) Background Papers · 7 Nov 2025 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 7 Nov 2025 View ↗ PDF ECNSLT-INTERNAL CONSULTS Background Papers · 7 Nov 2025 View ↗ PDF ECNSLT-INTERNAL CONSULTS Background Papers · 7 Nov 2025 View ↗ PDF SITE NOTICE 21 OR 28 DAYS IF T&C APPL. Background Papers · 7 Nov 2025 View ↗ PDF RECEIPT OF APPLICATION Other · 4 Nov 2025 View ↗ PDF 1ST INVALID LETTER Background Papers · 4 Nov 2025 View ↗ PDF WASTE AND RECYCLING PROVISION Background Papers · 31 Oct 2025 View ↗

All documents on the council site ↗

Associated applications 2

Site constraints 10

Grade II listed: 45, New Cavendish Street W1
List entry 1266744 · The pin is inside its outline · 56 more listed buildings within 150 m (4 Grade II*, 52 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 56 with distances
Historic England ↗
Harley Street 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 2.6
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: Marylebone High Street
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
National infrastructure project 1941 m away: Thames Tideway Tunnel; 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 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 area55 m² (592 sq ft)
Energy ratingC (asset rating 60)
UseA1/A2 Retail and Financial/Professional services
HeatingAir Conditioning

From the energy performance certificate lodged in May 2022, 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
W1G 9TJ
Received
31 Oct 2025
Validated
4 Nov 2025
Ward
Marylebone
Case officer
Show
Target decision
10 Mar 2026
Decision
Application Permitted
Decision date
4 Mar 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Hertford Planning Service
Leaseholder
Show

How this decision compares

Decided in 120 days from validation, 44 days slower than Westminster's median of 76 for full applications. Approved, as 86% of full applications here are.

35%decided within 8 weeks
86%approved
2,198decided 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.

15 neighbours consulted · Last counted 9 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14435008
Planning Portal ref
PP-14435008
Comments by
10 Dec 2025
Site or press notice
7 Nov 2025
Env. assessment
No

Historical activity at this location

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

This property

Previous applications at this address

2025
Internal alterations at ground and lower ground level including reinstatement of staircas…
25/07902/LBC
2022 Approved
Use of part of the lower ground floor for retail purposes (Class E).
22/01846/FULL
2022 Approved
Internal alterations at ground and lower ground level including reinstatement of staircas…
22/02074/LBC
2019 Approved
Internal alterations at ground and lower ground level including reinstatement of staircas…
19/04306/LBC
2019 Approved
Use of part of the lower ground floor for retail purposes (Class A1).
19/04305/FULL
2016 Approved
Details of sound insulation pursuant to condition 4 of planning permission dated 28th Jun…
16/07803/ADFULL
Within ~100m

Nearby activity

2025 Approved
Hahnemann House 32 Welbeck Street London W1G 8EU
Display for a temporary period of six months of a non-illuminated 'to let' board attached…
25/06276/AD7
2025
17 New Cavendish Street London W1G 9UA
Variation of condition 2 of planning permission dated 12th February 1998 (RN:97/05508/FUL…
25/06483/FULL
2025
Hahnemann House 32 Welbeck Street London W1G 8EU
Installation of CCTV to front entrance and rear emergency exit. (Retropsective) Linked wi…
25/06098/LBC
2025
Hahnemann House 32 Welbeck Street London W1G 8EU
Installation of CCTV to front entrance and rear emergency exit. (Retrospective) Linked wi…
25/06097/FULL
2025 Refused
Hahnemann House 32 Welbeck Street London W1G 8EU
Installation of CCTV to front entrance and rear emergency exit. (Retrospective, linked wi…
25/04216/FULL
2025 Refused
Hahnemann House 32 Welbeck Street London W1G 8EU
Installation of CCTV to front entrance and rear emergency exit. ((Retrospective, Linked w…
25/04217/LBC
2025 Approved
2 Wimpole Mews London W1G 8PE
Replacement of existing garage door with window at ground floor level to the front facade…
25/03973/LBC
2025 Approved
2 Wimpole Mews London W1G 8PE
Replacement of existing garage door with window at ground floor level to the front facade…
25/03972/FULL
2025
Hahnemann House 32 Welbeck Street London W1G 8EU
Installation of CCTV to front and rear entrances (Linked with 25/01795/FULL, Retrospectiv…
25/01796/LBC
2025
Hahnemann House 32 Welbeck Street London W1G 8EU
Installation of CCTV to front and rear entrances. (Linked with 25/01796/LBC, Retrospectiv…
25/01795/FULL
2025 Approved
31 New Cavendish Street London W1G 9TT
Display of non-illuminated fascia sign measuring 1200mm x 315mm, and non illuminated proj…
25/01214/ADV
2025 Approved
29 Welbeck Street London W1G 8EP
Display for a temporary period of six months of a non-illuminated estate agent board atta…
25/00328/AD7
2025
16 De Walden Street London W1G 8RN
Variation of condition 1 of planning permission dated 7th October 2024 (RN:24/04641/FULL)…
25/00187/FULL
2024
16 - 18 Westmoreland Street London W1G 8PH
Installation of ventilation ducting to support Air Handling Unit upgrade works. (Temporar…
24/06586/FULL
2024
Flat 4 39 Wimpole Street London W1G 8YE
Minor additional alterations to the existing second floor flat following extensive refurb…
24/06423/LBC
2024
29 Wimpole Street London W1G 8GP
Doff cleaning of the terra cotta elements of the New Cavendish Street and Wimpole Street…
24/06035/LBC
2024
30 Welbeck Street London W1G 8ER
Display for a temporary period of six months of a non-illuminated estate agent board atta…
24/05372/AD7
2024
16 De Walden Street London W1G 8RN
Internal remodelling of 1st and 2nd floors, demolition of existing roof pod and construct…
24/04641/FULL
2024 Withdrawn
64 New Cavendish Street London W1G 8TB
Use of the building as Medical (Class Ee) for a temporary period of 25 years.
24/03185/FULL
2024
12 Wimpole Mews London W1G 8PF
Replacement garage door, in addition to new internal partitions within one of the garages…
24/03878/FULL
2019 Approved
2 Wesley Street London W1G 8PT
Replacement of existing metal framed window and metal grilles with a new timber door and…
19/06777/FULL
2019 Withdrawn
Regina House 65 Wimpole Street London W1G 8AN
Erection of a single storey roof extension at main roof level to provide additional resid…
19/07274/FULL
2019 Withdrawn
Wimpole Street London W1G 8SF
Display for a temporary period of six months of a non-illuminated estate agent board loca…
19/07579/AD7
2019 Refused
48 Wimpole Street London W1G 8SF
Display for a temporary period of six months of a non-illuminated estate agent board atta…
19/07496/AD7
2019 Approved
32-34 New Cavendish Street London W1G 8UB
Installation of two new air conditioning units, and associated pipeworks, within lower gr…
19/05470/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.

Leaseholders: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.