4 Queen Anne Street London W1G 9LQ Data via plota.co.uk

25/07282/FULL - Full Planning Permission Application Approved

Proposal

Variaiton of Conditon 1 of planning permission dated 18 November 2024 (RN: ) for, 'Installation of two air conditioning units at main roof level with associated pipework on the rear elevation, installation of two grilles on the rear wall in the lightwell at lower ground floor level and internal alterations at lower ground and ground floor levels'; Namely, to amend the location of the two items of plant on the roof in addition to amending the specification of the anti-vibration mounts. (Linked with 25/07252/LBC) (Application under Section 73 of the Act). Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
8 Oct 2025
✓
Consultation
21 Oct 2025
✓
Approved
24 Mar 2026

Approved on 24 Mar 2026 · Delegated Decision · Last checked 13 Oct 2026

Documents 26

Decision & officer reports 2

PDF GRANT OF FULL PP [PE] Decision Notice · 24 Mar 2026 View ↗ PDF DELEGATED REPORT Report · 24 Mar 2026 View ↗

Statements & assessments 2

PDF PLANT NOISE IMPACT ASSESSMENT Noise impact assessment · 8 Oct 2025 View ↗ PDF COVER LETTER/HERITAGE/DESIGN AND ACCESS STATEMENT Background Papers · 8 Oct 2025 View ↗

Plans & drawings 14

PDF PROPOSED REAR ELEVATION A Drawing · 23 Mar 2026 View ↗ PDF EXISTING REAR ELEVATION A Drawing · 23 Mar 2026 View ↗ PDF PROPOSED GROUND FLOOR PLAN Drawing · 23 Mar 2026 View ↗ PDF EXISTING GROUND FLOOR PLAN Drawing · 23 Mar 2026 View ↗ PDF PHOTOGRAPHS Drawing · 23 Mar 2026 View ↗ PDF LOCATION PLAN Location Plan · 8 Oct 2025 View ↗ PDF EXISTING ROOF PLAN Drawing · 8 Oct 2025 View ↗ PDF PROPOSED ROOF PLAN Drawing · 8 Oct 2025 View ↗ PDF EXISTING MAIN FRONT ELEVATION Drawing · 8 Oct 2025 View ↗ PDF EXISTING REAR ELEVATION Drawing · 8 Oct 2025 View ↗ PDF PROPOSED MAIN FRONT ELEVATION Drawing · 8 Oct 2025 View ↗ PDF PROPOSED REAR ELEVATION Drawing · 8 Oct 2025 View ↗ PDF EXISTING TYPICAL SECTION Drawing · 8 Oct 2025 View ↗ PDF PROPOSED TYPICAL SECTION Drawing · 8 Oct 2025 View ↗

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 8 Oct 2025 View ↗

Consultation & comments 1

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

Other documents 6

PDF ACK-GENERAL LETTER (G/P/C) Background Papers · 21 Oct 2025 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 21 Oct 2025 View ↗ PDF SITE NOTICE 21 OR 28 DAYS IF T&C APPL. Background Papers · 21 Oct 2025 View ↗ PDF RECEIPT OF APPLICATION Other · 13 Oct 2025 View ↗ PDF PRODUCT SHEET: FLEXI EVERYDAY FLEXI FOOT Background Papers · 8 Oct 2025 View ↗ PDF DATA SHEET: SM MOUNT Background Papers · 8 Oct 2025 View ↗

All documents on the council site ↗

Associated applications 2

  • Part of

    Variationcouncil archive
    • FullVariaiton of Conditon 1 of planning permission dated 18 November 2024 (RN) for, 'Installation…This application25/07282/FULL

Site constraints 9

Grade II listed: No 2 and Attached Railings No 4 and Attached Railings
List entry 1359565 · The pin is inside its outline · 49 more listed buildings within 150 m (1 Grade I, 10 Grade II*, 38 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 49 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 ↗
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.
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 ↗
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 1748 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.

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Important details

Council
Westminster
Application type
Full Planning Permission Application
Postcode
W1G 9LQ
Received
8 Oct 2025
Validated
8 Oct 2025
Ward
Marylebone
Case officer
Show
Target decision
27 Mar 2026
Decision
Application Permitted
Decision date
24 Mar 2026
Decision level
Delegated Decision
Agent
Firstplan Ltd
Leaseholder
Show

How this decision compares

Decided in 167 days from validation, 112 days slower than Westminster's median of 55 for amendments. Approved, as 91% of amendments here are.

53%decided within 8 weeks
91%approved
462decided in the last year

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

Public comments

No public comments yet.

57 neighbours consulted · Last counted 13 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-13803679
Planning Portal ref
PP-13803679
Comments by
11 Nov 2025
Site or press notice
21 Oct 2025
Env. assessment
No

Historical activity at this location

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

This property

Previous applications at this address

2025
Repositioning of the plant units and new anti-vibration mounts. (Linked with 25/07282/FUL…
25/07252/LBC
2025
Variation of condition 1 of planning permission dated 22nd November 2024 (RN: 24/05074/FU…
25/07255/FULL
2025
Installation of additional anti-vibration mounts and reposition the currently approved pl…
25/07251/LBC
2024
Removal of existing air conditioning plant equipment, installation of replacement air con…
24/05075/LBC
2024
Removal of existing air conditioning plant equipment, installation of replacement air con…
24/05074/FULL
2024
Removal of existing air conditioning plant equipment, installation of replacement air con…
24/05064/LBC
2024
Removal of existing air conditioning plant equipment, installation of replacement air con…
24/05063/FULL
2021
Replacement of 1 air conditioning unit and relocation of 1 air conditioning unit within f…
21/03205/LBC
2021
Replacement of 1 air conditioning unit and relocation of 1 air conditioning unit within f…
21/03204/FULL
2019 Withdrawn
Replacement of air conditioning unit and replacement of window panels to rear elevation…
19/09925/LBC
2019 Withdrawn
Replacement of air conditioning unit and replacement of window panels to rear elevation…
19/09924/FULL
2020
Removal of existing air conditions units, installation of replacement air conditioning un…
20/05463/LBC
2020
Removal of existing air conditioning units, installation of replacement air conditioning…
20/05462/FULL
Within ~100m

Nearby activity

2025 Withdrawn
4 Mansfield Mews London W1G 9NL
Partial removal of existing roof to create new roof terrace, accessible via a new stair w…
25/05099/FULL
2025 Withdrawn
4 Mansfield Mews London W1G 9NL
Partial removal of existing roof to create new roof terrace, accessible via a new stair w…
25/05100/LBC
2025
2 Mansfield Mews London W1G 9NL
Replacement of existing glass roof finish with a zinc covering.
25/06964/FULL
2025
9 Mansfield Street London W1G 9NZ
Change of Use from office (Class E) to residential (Use Class C3), refurbishment and reco…
25/06412/FULL
2025
9 Mansfield Street London W1G 9NZ
Change of Use from office (Class E) to residential (Use Class C3), refurbishment and reco…
25/06413/LBC
2025 Approved
Flat 53 2 Mansfield Street London W1G 9NF
Alterations to the internal layout including the removal of partitions, construction of n…
25/04293/LBC
2025
10 Duchess Street London W1G 9AB
Internal alterations (in connection with the change of use approved under 24/02735/FULL a…
25/03265/LBC
2025
1 Portland Place London W1B 1PR
Replacement of roof level plant with 7 VRF within existing enclosure and 3 new units to l…
25/03113/FULL
2025
Ambika House 9B Portland Place London W1B 1PS
Removal of bin store from existing location to rear yard of property; removal of existing…
25/02031/FULL
2025
17 Duchess Mews London W1G 9DU
Installation of ten PV panels and replacement of air conditioning unit with air source he…
25/00325/LBC
2024
9 Mansfield Street London W1G 9NZ
Limited demolition, strip out and investigative works to 9 Mansfield Street and 6 Mansfie…
24/09052/LBC
2024
17 Duchess Mews London W1G 9DU
Variation of conditions 1,4, 5 of planning permission dated 6th August 2024 (RN 24/00210/…
24/08568/FULL
2024
17 Duchess Mews London W1G 9DU
Variation of conditions 1,4, 5 of listed building consent dated 6th August 2024 (RN 24/00…
24/08732/LBC
2024
Flat 34 2 Mansfield Street London W1G 9NF
Mounting of air source heat pump at roof level and associated cabling and connection via…
24/07905/LBC
2024
Flat 40 2 Mansfield Street London W1G 9NF
Relocation of existing air source heat pump set back an additional 2m from the roof's edg…
24/07735/FULL
2024
Flat 40 2 Mansfield Street London W1G 9NF
Relocation of existing air source heat pump set back an additional 2m from the roof's edg…
24/07736/LBC
2024
Flat 15 2 Mansfield Street London W1G 9NF
Relocation of Air Source Heat Pump to a different part of the building roof.
24/07625/LBC
2024
40 Harley Street London W1G 9PP
Installation of plant to roof within two acoustic enclosures, with associated pipework to…
24/07276/FULL
2024
Flat 1 5 Portland Place London W1B 1PW
Replacement of rear terrace doors with new sliding doors.
24/06765/FULL
2024 Approved
9 Mansfield Street London W1G 9NZ
Removal of High Risk ACM's ( Asbestos Containing Materials ) that have been identified wi…
24/04574/LBC
2020 Approved
1 Portland Place London W1B 1PR
Installation of an air conditioning unit at roof level within existing enclosure.
20/01450/FULL
2020 Approved
19 Portland Place London W1B 1PX
Internal alterations.
20/00462/LBC
2020 Approved
19 Portland Place London W1B 1PX
Use of the basement, ground, first, second, third and fourth floor as educational use (Cl…
20/00461/FULL
2019 Approved
Flat 15 2 Mansfield Street London W1G 9NF
Internal refurbishment works
19/08962/LBC
2020 Approved
19 Portland Place London W1B 1PX
Removal of internal glazed office partitioning to floors 1, 3 & 4.
20/00111/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.