Hallam House 56 - 60 Hallam Street London W1W 6JL Data via plota.co.uk

25/04301/FULL - Full Planning Permission Application Approved

Proposal

Demolition of existing roof plant room and erection of a single floor roof extension to provide one residential unit (Class C3). Erection of replacement plant room, and provision of an external terrace, landscaping and green roof. Alterations to rear fenestration pattern. Erection of single storey lower ground floor extension within rear lightwell to provide additional office floorspace (Class E) and replacement of a window with a door at front ground floor level. Data via plota.co.uk

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View original council record ↗Last checked 31 Oct 2026, 08:37

Street View

Application progress

✓

Received

24 Jun 2025

✓

Validated

4 Aug 2025

✓

Consultation

11 Aug 2025

✓

Approved

11 Nov 2025

Approved on 11 Nov 2025 · Sub-Committee · Last checked 31 Oct 2026

Documents 124

Decision & officer reports 2

PDF GRANT OF FULL PP [PE] Decision Notice · 19 Nov 2025 View ↗ PDF SUB COMMITTEE REPORT Report · 11 Nov 2025 View ↗

Statements & assessments 8

PDF UPDATED PLANNING STATEMENT Background Papers · 4 Aug 2025 View ↗ PDF PLANNING STATEMENT Background Papers · 24 Jun 2025 View ↗ PDF DAYLIGHT AND SUNLIGHT IMPACTS APPENDIX Daylight and Sunlight assessment · 24 Jun 2025 View ↗ PDF DAYLIGHT AND SUNLIGHT IMPACTS REPORT Daylight and Sunlight assessment · 24 Jun 2025 View ↗ PDF DAYLIGHT AND SUNLIGHT INTERNAL Daylight and Sunlight assessment · 24 Jun 2025 View ↗ PDF DESIGN AND ACCESS STATEMENT Design and Access Statement · 24 Jun 2025 View ↗ PDF NOISE ASSESSMENT Noise impact assessment · 24 Jun 2025 View ↗ PDF HERITAGE ASSESSMENT Heritage Statement · 24 Jun 2025 View ↗

Plans & drawings 97

Application forms 1

PDF CIL FORM 1 20.6.25 CIL Form · 24 Jun 2025 View ↗

Consultation & comments 4

PDF NEIGHBOUR NOTIFICATION LETTER (21D) Background Papers · 11 Aug 2025 View ↗ PDF INVALID CHASER LETTER (14 DAY RESPONSE) Background Papers · 28 Jul 2025 View ↗ PDF INVALID CHASER LETTER (14 DAY RESPONSE) Background Papers · 8 Jul 2025 View ↗ PDF OBJECTION Objection Comment · 1 Jul 2025 View ↗

Associated applications 2

FullApproved11 Nov 202525/04301/FULLThis application
Demolition of existing roof plant room and erection of a single floor roof extension to provide one residential unit (Class C3).…
Conditions 18 awaiting decision
- ConditionsDetails of appropriate arrangements to secure measures to mitigate the potential increased…11 Feb 202626/00826/ADFULL

Site constraints 9

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.

Protected view corridor: 4A.2 Primrose Hill summit to the Palace of Westminster

Inside the landmark viewing corridor of a protected vista. A building that rises above the corridor's threshold height should be refused. How high that is depends on where along the view the site is.

The London Plan (policy HC4) designates strategic views, and the Mayor's London View Management Framework (March 2012) gives 13 of them a protected vista toward St Paul's Cathedral, the Palace of Westminster or the Tower of London. A vista has a threshold height that rises or falls with the line of sight. In the landmark viewing corridor, a building above it would harm the view and should be refused. In the wider setting consultation area around the corridor, a building above it is referred for consultation and its effect on the view is judged. The threshold changes along each view and is set out in the framework. A revised framework is out for consultation until 4 December 2026 and is not yet in force.

London View Management Framework ↗

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 ↗

12 listed buildings within 150 m

Nearest: General Medical Council, Grade II, 8 m away · 6 Grade II*, 6 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 12 with distances

8 mGeneral Medical CouncilGrade II
52 m8, Hallam Mews W1Grade II
57 m12, Weymouth Street W1Grade II
60 m56 and 58, Portland Place W1Grade II*
62 mThe Royal Institute of British ArchitectsGrade II*
67 m34-52, Portland Place W1Grade II*
106 m73, New Cavendish Street W1Grade II
113 mStatue of Sir George Stuart White in Centre of Road South of Weymouth Street CrossingGrade II
130 m41-47, Portland Place W1Grade II*
134 m32, Portland Place W1Grade II
137 m27-35 Portland PlaceGrade II*
142 m26-30, Portland Place W1Grade II*

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 1864 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 1 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.

Sales history 2

Last sold for £9,072,000 in April 2025. Other property, freehold.

10 April 2025£9,072,000Recorded as a transfer outside a standard sale

14 March 2024£4,500,000Recorded as a transfer outside a standard sale

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area882 m² (9,494 sq ft)

Energy ratingD (asset rating 97)

UseB1 Offices and Workshop businesses

HeatingHeating and Natural Ventilation

From the energy performance certificate lodged in March 2017, 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: W1W 6JL
Received: 24 Jun 2025
Validated: 4 Aug 2025
Ward: West End
Case officer: Show
Target decision: 21 Nov 2025
Decision: Application Permitted
Decision date: 11 Nov 2025
Decision level: Sub-Committee
Applicant: Show
Agent: Savills
Freehold owner: Show

How this decision compares

Decided in 99 days from validation, 23 days slower than Westminster's median of 76 for full applications. Approved, as 86% of full applications here are.

This one99d

Council76d

UK57d

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

4comments received

4 objecting

100% object · above the UK average of 74%

34 neighbours consulted · Last counted 31 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference: PP-14106758
Planning Portal ref: PP-14106758
Comments by: 10 Sept 2025
Site or press notice: 11 Aug 2025
Committee: 11 Nov 2025
Env. assessment: No

Historical activity at this location

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

This property

Previous applications at this address

2025 Withdrawn

Demolition of existing roof plant room and erection of a single floor roof extension abov…

25/03713/FULL 10 Sep 2025

2025

Notification for Prior Approval for the change of use the building to 6 residential apart…

25/00247/P3JPA 16 Jan 2025

2024

Installation of replacement access door to ground floor front elevation at south west cor…

24/07743/FULL 6 Nov 2024

Within ~100m

Nearby activity

2025

52 Portland Place London W1B 1NH

Demolition, refurbishment, restoration and alterations to 52 Portland Place as well as re…

25/08377/LBC 17 Nov 2025

2025

52 Portland Place London W1B 1NH

Demolition, refurbishment, restoration and alterations to 52 Portland Place as well as re…

25/08376/FULL 17 Nov 2025

2025 Approved

50 Hallam Street London W1W 6JJ

Extension of party wall and replacement of single chimney of front chimney stack of 50 Ha…

25/03602/LBC 11 Nov 2025

2025

167 - 169 Great Portland Street London W1W 5PA

External works comprising alterations to ground floor entrance and shopfront including in…

25/07527/FULL 17 Oct 2025

2025

Hallam Street London

Display of one non illuminated fascia sign measuring 0.375m x 1.015m located beneath Cave…

25/07298/ADV 9 Oct 2025

2025 Refused

167 - 169 Great Portland Street London W1W 5PA

External works comprising alterations to ground floor entrance and shopfront including in…

25/05704/FULL 3 Oct 2025

2025

Hampden House 2 Weymouth Street London W1W 5BT

Variation of Condition 1 and 12 of planning permission dated 11 October 2023 (RN:23/02110…

25/02173/FULL 31 Mar 2025

2025

Royal Institute Of British Architects 66 Portland Place London W1B 1AD

Internal and external alterations including internal layout alterations, refurbishment an…

25/01205/LBC 21 Feb 2025

2025

Royal Institute Of British Architects 66 Portland Place London W1B 1AD

Internal and external alterations including internal layout alterations, refurbishment an…

25/01204/FULL 21 Feb 2025

2025

48 Portland Place London W1B 1NN

Pitched and flat roof repairs, external render repairs and redecoration, timber window re…

25/00294/LBC 17 Jan 2025

2022 Withdrawn

First Floor Northumberland House 155-157 Great Portland Street London W1W 6QP

Installation of three air conditioning compressors on flat roof at rear first floor level.

22/00733/FULL 21 Nov 2024

2024

Tennyson House 159 - 165 Great Portland Street London W1W 5PA

Alterations to ground floor entrance; installation of plant equipment at roof level; and…

24/07581/FULL 31 Oct 2024

2024

167 - 169 Great Portland Street London W1W 5PA

External works comprising alterations to ground floor entrance; installation of plant equ…

24/07573/FULL 30 Oct 2024

2024

Devon House 171 - 177 Great Portland Street London W1W 5PQ

Alterations to existing facade comprising reconfiguration of existing entrances and shopf…

24/07574/FULL 30 Oct 2024

2024 Approved

De Walden Court 85 - 89 New Cavendish Street London W1W 6XD

Display for a temporary period of six months of a non-illuminated 'to let' board attached…

24/06732/AD7 9 Oct 2024

2024

8 Cavendish Mews North London W1W 6LA

Reconfiguration of rear windows and installation of new double glazed sash windows.

24/07017/FULL 7 Oct 2024

2024 Approved

Royal Institute Of British Architects 66 Portland Place London W1B 1AD

Provision of internal fire upgrade works

24/04471/LBC 9 Sep 2024

2024

Northumberland House 155 - 157 Great Portland Street London W1W 6QP

Alterations to the entrance at ground floor level and installation of plant with screenin…

24/06018/FULL 28 Aug 2024

2024

Royal Institute Of British Architects 66 Portland Place London W1B 1AD

Installation of 6No. antennas, 2no. 300mm dishes, 3no. cabinets and ancillary works there…

24/05117/LBC 26 Jul 2024

2024

Royal Institute Of British Architects 66 Portland Place London W1B 1AD

Installation of 6No. antennas, 2no. 300mm dishes, 3no. cabinets and ancillary works there…

24/05116/FULL 26 Jul 2024

2017 Approved

170 Great Portland Street London W1W 5QB

Use of the basement and ground floor of 170-172 Great Portland Street as restaurant/cafe…

17/09047/FULL 13 Feb 2018

2017 Approved

42 Portland Place London W1B 1NB

Variation of Condition 4 of planning permission dated 7 November 2017 (RN: 17/08055/FULL)…

17/10744/FULL 23 Jan 2018

2018 Approved

125 Great Portland Street London W1W 6AX

Display for a temporary period of six months of a non-illuminated estate agent board loca…

18/00254/AD7 23 Jan 2018

2017 Approved

Stone House 9 Weymouth Street London W1W 6DB

Erection of a new single storey roof extension to create four residential units (Class C3…

17/05227/FULL 19 Dec 2017

2017 Approved

Northumberland House 155-157 Great Portland Street London W1W 6QP

Installation of one air conditioning unit at roof level.

17/08011/FULL 25 Oct 2017

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

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.

Hallam House 56 - 60 Hallam Street London W1W 6JL Data via plota.co.uk

Proposal

Application progress

Documents 124

Decision & officer reports 2

Statements & assessments 8

Plans & drawings 97

Application forms 1

Consultation & comments 4

Other documents 12

Associated applications 2

Site constraints 9

Sales history 2

Building

Other new applications on this street

Nearby new applications

Important details

How this decision compares

Public comments

Consultation & key dates

Previous applications at this address

Nearby activity