First Floor 15 Harley Street London W1G 9QQ Data via plota.co.uk

25/06469/FULL - Full Planning Permission Application Approved

Proposal

Re-orientation and screening of an existing air handling unit (AHU) located on the rooftop of the modern rear extension at 15 Harley Street. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
10 Sept 2025
✓
Consultation
22 Sept 2025
✓
Approved
10 Nov 2025

Approved on 10 Nov 2025 · Complex Delegated Decision · Last checked 18 Oct 2026

Documents 32

Decision & officer reports 2

PDF GRANT OF FULL PP [PE] Decision Notice · 10 Nov 2025 View ↗ PDF DELEGATED REPORT Report · 10 Nov 2025 View ↗

Statements & assessments 3

PDF DESIGN AND ACCESS STATEMENT Design and Access Statement · 10 Sept 2025 View ↗ PDF HERITAGE STATEMENT - 15 HARLEY STREET Heritage Statement · 10 Sept 2025 View ↗ PDF DAYLIGHT AND SUNLIGHT REPORT - 15 HARLEY STREET Daylight and Sunlight assessment · 10 Sept 2025 View ↗

Plans & drawings 16

PDF LOCATION PLAN Location Plan · 10 Sept 2025 View ↗ PDF 02 EXISTING AND PROPOSED ROOF PLAN Drawing · 10 Sept 2025 View ↗ PDF ROOF PLAN - PROPOSED INCLUDED IN ROOF PLAN - EXISTING Background Papers · 10 Sept 2025 View ↗ PDF 03 EXISTING AND PROPOSED WEST ELEVATION Drawing · 10 Sept 2025 View ↗ PDF ELEVATION (FRONT) - PROPOSED INCLUDED IN ELEVATION (FRONT) - EXISTING Background Papers · 10 Sept 2025 View ↗ PDF 04 EXISTING AND PROPOSED EAST ELEVATION Drawing · 10 Sept 2025 View ↗ PDF ELEVATION (REAR) - PROPOSED INCLUDED IN ELEVATION (REAR) - EXISTING Background Papers · 10 Sept 2025 View ↗ PDF 05 EXISTING AND PROPOSED NORTH ELEVATION Drawing · 10 Sept 2025 View ↗ PDF ELEVATION (SIDE) - PROPOSED INCLUDED IN ELEVATION (SIDE) - EXISTING Drawing · 10 Sept 2025 View ↗ PDF 06 EXISTING AND PROPOSED SOUTH ELEVATION Drawing · 10 Sept 2025 View ↗ PDF ELEVATION (SIDE) - PROPOSED INCLUDED IN ELEVATION (SIDE) - EXISTING Background Papers · 10 Sept 2025 View ↗ PDF 07 EXISTING AND PROPOSED SECTION Drawing · 10 Sept 2025 View ↗ PDF SECTION - PROPOSED INCLUDED IN SECTION - EXISTING Background Papers · 10 Sept 2025 View ↗ PDF 08 PROPOSED PLANT ENCLOSURE Drawing · 10 Sept 2025 View ↗ PDF 09 PLANT ENCLOSURE VISUALS Drawing · 10 Sept 2025 View ↗ PDF 10 LOCAL PLANT ENCLOSURES Drawing · 10 Sept 2025 View ↗

Application forms 1

PDF APPLICATION FORM REDACTED Application Form · 10 Sept 2025 View ↗

Consultation & comments 2

PDF Commenter’s name hidden Show Online Comment · 13 Oct 2025 View ↗
PDF NEIGHBOUR NOTIFICATION LETTER (21D) Background Papers · 22 Sept 2025 View ↗

Other documents 8

PDF ACK-GENERAL LETTER (G/P/C) Background Papers · 22 Sept 2025 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 22 Sept 2025 View ↗ PDF ECNSLT-INTERNAL CONSULTS Background Papers · 22 Sept 2025 View ↗ PDF SITE NOTICE 21 OR 28 DAYS IF T&C APPL. Background Papers · 22 Sept 2025 View ↗ PDF RECEIPT OF APPLICATION ACKREC · 16 Sept 2025 View ↗ PDF APPLICATION SUMMARY SHEET Background Papers Sensitive · 16 Sept 2025 View ↗ PDF ATTACHMENT SUMMARY Background Papers · 10 Sept 2025 View ↗ PDF ACOUSTIC REPORT - 15 HARLEY STREET Background Papers · 10 Sept 2025 View ↗

All documents on the council site ↗

Site constraints 9

Grade II listed: 15 and 17, Harley Street
List entry 1066668 · The pin is inside its outline · 53 more listed buildings within 150 m (4 Grade II*, 49 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 53 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.
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.
Also on the record
National infrastructure project 1661 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; Town centre 52 m away: West End.
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.

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Important details

Council
Westminster
Application type
Full Planning Permission Application
Postcode
W1G 9QQ
Received
10 Sept 2025
Validated
10 Sept 2025
Ward
Marylebone
Case officer
Show
Target decision
13 Nov 2025
Decision
Application Permitted
Decision date
10 Nov 2025
Decision level
Complex Delegated Decision
Applicant
Show
Agent
Kiani Architects
Leaseholder
Show

How this decision compares

Decided in 61 days from validation, 15 days faster 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

1comment received
1 neutral

22 neighbours consulted · Last counted 18 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14309097
Planning Portal ref
PP-14309097
Comments by
13 Oct 2025
Site or press notice
22 Sept 2025
Env. assessment
No

Historical activity at this location

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

This property

Previous applications at this address

2025
Re-orientation of an existing air handling unit (AHU) located on the rooftop of the moder…
25/06470/LBC
2023 Approved
Internal alterations to first floor clinic involving the removal or existing internal par…
23/01318/LBC
Within ~100m

Nearby activity

2025
14 Cavendish Square London W1G 9DB
Refurbishment of 14 Cavendish Square, including modest internal and external alterations…
25/07886/FULL
2025
14 Cavendish Square London W1G 9DB
Refurbishment of 14 Cavendish Square, including modest internal and external alterations…
25/07887/LBC
2025 Approved
23 Wigmore Place London W1U 2LZ
1 x London plane (T1, rear): Reduce height to previous most recent reduction points, reta…
25/06065/TCA
2025 Approved
13 Harley Street London W1G 9QG
Internal alterations throughout the building to include the construction of four demounta…
25/04782/LBC
2025 Approved
13 Harley Street London W1G 9QG
Creation of new terrace areas at ground floor level within a lightwell and at the rear of…
25/04781/FULL
2025 Approved
12 Harley Street London W1G 9PB
Installation of new handrails at no.8, 10 and 12; and repairs to existing front entrance…
25/04974/LBC
2025 Approved
12 Harley Street London W1G 9PB
Installation of new handrails at no.8, 10 and 12; and repairs to existing front entrance…
25/04973/FULL
2025
14 Wigmore Place London W1U 2LX
Replacement of front entrance door; installation of insulation to external walls; removal…
25/06648/LBC
2025
14 Wigmore Place London W1U 2LX
Replacement of front entrance door; installation of slim line glazing to existing windows…
25/06647/FULL
2025
Cavendish House 18 Cavendish Square London W1G 0PJ
Removal of double doorway with surrounding frame and glazing, provision of matwell, refur…
25/06186/LBC
2025
29 Queen Anne Street London W1G 9HU
Replacement of a window on the rear elevation with a new access door; reinforcements and…
25/04706/LBC
2025
29 Queen Anne Street London W1G 9HU
Replacement of a window on the rear elevation with a new access door; reinforcements and…
25/04705/FULL
2025
13 Wigmore Place London W1U 2LX
Installation of ASHP at lower ground floor courtyard (retrospective). (Linked with 25/030…
25/03024/LBC
2025
13 Wigmore Place London W1U 2LX
Installation of ASHP at lower ground floor courtyard (retrospective). (Linked with 25/030…
25/03023/FULL
2025
4 Dean's Mews London W1G 9EF
Removal of the existing roof features and creation of a single storey extension, the exca…
25/02391/FULL
2025
4 Dean's Mews London W1G 9EF
Removal of the existing roof features and creation of a single storey extension, the exca…
25/02392/LBC
2025
29 Queen Anne Street London W1G 9HU
Removal of condition 1 of planning permission dated 3rd July 1996 (RN:90/06471/FULL) for…
25/01562/FULL
2025
Cavendish Square London
Display of non illuminated egg sculpture and plinth measuring 0.5m X 1.6m for a temporary…
25/00886/ADV
2025
14 Cavendish Square London W1G 9DB
Use of lower ground, ground, first, and second floors as a not-for-profit museum (Use Cla…
25/00722/FULL
2024
Queen Anne Street London
Establishment of a Heritage Partnership Agreement for works undertaken by or on behalf of…
25/00004/LBHPA
2020 Approved
1-7 Harley Street London W1G 9QD
Partial demolition behind front facade of 1-5 Harley Street and full demolition behind fa…
20/03361/FULL
2020 Approved
15 Cavendish Square London W1G 9DB
Internal fit-out, including insertion of dry wall partitions to create treatment and cons…
20/05959/LBC
2020 Approved
10 Wimpole Street London W1G 9SS
Variation of Condition 1 of planning permission dated 24 March 2020 (RN: 20/00021/FULL) f…
20/04901/FULL
2020 Approved
10 Wimpole Street London W1G 9SS
Variation of condition 1 of listed building consent dated 24 March 2020 (RN: 20/00732/LBC…
20/04899/LBC
2020 Approved
21 Harley Street London W1G 9QL
Internal alterations at basement, first and second floor levels, including strengthening…
20/04848/LBC
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

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.