1 Portland Place London W1B 1PR Data via plota.co.uk

26/05148/ADFULL - Approval of Details (Full PP) Approved
Commercial & major works

Proposal

Detailed drawings of visual screening for the new plant in the front area lightwell pursuant to Condition 6 of planning permission dated 27th June 2025 (RN: ). Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
30 Jul 2026
✓
Approved
13 Aug 2026

Approved on 13 Aug 2026 · Delegated Decision · Last checked 13 Aug 2026

Documents 11

Decision & officer reports 3

PDF APPR. OF DETAILS-FULL RESMAT [PE] Decision Notice · 13 Aug 2026 View ↗ PDF DELEGATED REPORT Report · 13 Aug 2026 View ↗ PDF 25/03113/FULL DECISION LETTER Background Papers · 30 Jul 2026 View ↗

Plans & drawings 3

PDF MECHANICAL SERVICES BASEMENT CHANDOS STREET ELEVATIONS PROPOSED HEATING AND COOL Drawing · 30 Jul 2026 View ↗ PDF MECHANICAL SERVICES BASEMENT PORTLAND PLACE ELEVATIONS PROPOSED HEATING AND COOL Drawing · 30 Jul 2026 View ↗ PDF PROPOSED LOUVRED SCREEN - TYPICAL ARRANGEMENT Drawing · 30 Jul 2026 View ↗

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 30 Jul 2026 View ↗

Other documents 4

PDF ACK-APPROVAL OF DETAILS APPL. Background Papers · 11 Aug 2026 View ↗ PDF RECEIPT OF APPLICATION Other · 3 Aug 2026 View ↗ PDF ATTACHMENTSUMMARY Background Papers · 30 Jul 2026 View ↗ PDF COVERING LETTER Background Papers · 30 Jul 2026 View ↗

All documents on the council site ↗

Associated applications 2

  • Part of

    Fullcouncil archive

    Conditions 6 discharged

    • ConditionsDetailed drawings of visual screening for the new plant in the front area lightwell pursuant…This application26/05148/ADFULL

Site constraints 10

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 Named permitted development rights are withdrawn here.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 ↗
40 listed buildings within 150 m
Nearest: 2-6, Chandos Street W1, Grade II, 7 m away · 2 Grade I, 7 Grade II*, 31 Grade II
The site itself is not listed. 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 all 40 with distances
Historic England ↗
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 1649 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 98 m away: West End.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 6 October 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
Approval of Details (Full PP)
Postcode
W1B 1PR
Received
30 Jul 2026
Validated
30 Jul 2026
Ward
Marylebone
Case officer
Show
Target decision
24 Sept 2026
Decision
Application Permitted
Decision date
13 Aug 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Howard De Walden Estates Limited

How this decision compares

Decided in 14 days from validation, 42 days faster than Westminster's median of 56 for commercial and major works. Approved, as 92% of commercial and major works here are.

52%decided within 8 weeks
92%approved
234decided in the last year

Plota live figures for commercial and major works decided by Westminster in the last twelve months, from validation. Westminster decision record →

Public comments

No public comments yet.

Last counted 13 Aug 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14793398
Planning Portal ref
PP-14793398
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
Replacement of roof level plant with 7 VRF within existing enclosure and 3 new units to l…
25/03113/FULL
2022 Approved
Renewal of display for a temporary period of six months of a non-illuminated estate agent…
22/01711/AD7
2021 Approved
Display for a temporary period of six months of a non-illuminated estate agent board loca…
21/06030/AD7
2021 Approved
Erection of gantry, ladder, roof hatch and railing to access roof plant.
21/01654/FULL
2021 Approved
Display for a temporary period of six months of a non-illuminated estate agent board loca…
21/01561/AD7
2020 Approved
Installation of an air conditioning unit at roof level within existing enclosure.
20/01450/FULL
Within ~100m

Nearby activity

2025
4 Queen Anne Street London W1G 9LQ
Repositioning of the plant units and new anti-vibration mounts. (Linked with 25/07282/FUL…
25/07252/LBC
2025
4 Queen Anne Street London W1G 9LQ
Variation of condition 1 of planning permission dated 22nd November 2024 (RN: 24/05074/FU…
25/07255/FULL
2025
4 Queen Anne Street London W1G 9LQ
Installation of additional anti-vibration mounts and reposition the currently approved pl…
25/07251/LBC
2025
2 Mansfield Mews London W1G 9NL
Replacement of existing glass roof finish with a zinc covering.
25/06964/FULL
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
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
Broadcasting House 2 - 22 Portland Place London W1B 1DJ
Temporary display of egg sculpture and plinth in conjunction with the Big Egg Hunt for pe…
25/00885/ADV
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
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
Flat 1 5 Portland Place London W1B 1PW
Replacement of rear terrace doors with new sliding doors.
24/06765/FULL
2024
Flat 15 2 Mansfield Street London W1G 9NF
Replacement windows and doors. (Linked to 24/05895/FULL)
24/05896/LBC
2024
Flat 15 2 Mansfield Street London W1G 9NF
Replacement windows and doors. (Linked to 24/05896/LBC)
24/05895/FULL
2024
Flat 45 2 Mansfield Street London W1G 9NF
Erection of roof extension to the existing mansard roof with associated elevational alter…
24/05861/LBC
2024
Flat 45 2 Mansfield Street London W1G 9NF
Erection of roof extension to the existing mansard roof with associated elevational alter…
24/05860/FULL
2020 Approved
10A Chandos Street London W1G 9DQ
Display for a temporary period of six months of a non-illuminated estate agent board loca…
20/01059/AD7
2019 Approved
The Langham Hilton 1C Portland Place London W1B 1JA
Alterations including new glazing, planting and alterations to windows, to create new ext…
19/08430/FULL
2019 Approved
The Langham Hilton 1C Portland Place London W1B 1JA
Alterations including new glazing, planting and alterations to windows, to create new ext…
19/08831/LBC
2020
Flat 23 2 Mansfield Street London W1G 9NF
Internal decorative works including replacement of 2 x en-suite bathrooms and kitchen.
20/00465/CLOPUD
2019 Approved
3 Mansfield Street London W1G 9ND
Internal alterations, replacement of floor finishes at lower ground floor level.
19/08760/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

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use