8 - 10 Hallam Street London W1W 6JE Data via plota.co.uk

26/04972/FULL - Full Planning Permission Application Pending

Proposal

The erection of residential rear roof extension, rear first floor extension and external terraces, adjustment of rear facade window positions, installation of a dormer window and multipane windows to No.10 to match No.12, refurbishment of all existing windows, installation of plant equipment and associated works. Data via plota.co.uk

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View original council record ↗Last checked 12 Sept 2026, 12:20

Application progress

✓

Received

24 Jul 2026

Decision

Expected by 18 Sept 2026

This application is under consideration - no decision has been issued yet. Plota predicts a decision around 15 Sept 2026, from Westminster's recent extensions. The consultation period closed on 26 Aug 2026.

Documents 71

Statements & assessments 13

Plans & drawings 49

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 24 Jul 2026 View ↗

Consultation & comments 2

PDF PORTLAND VILLAGE ASSOCIATION Consultee Comment · 1 Aug 2026 View ↗ PDF NEIGHBOUR NOTIFICATION LETTER (21D) Background Papers · 30 Jul 2026 View ↗

Site constraints 7

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 Named permitted development rights are withdrawn here.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.

21 listed buildings within 150 m

Nearest: 126, Great Portland Street W1, Grade II, 60 m away · 1 Grade I, 3 Grade II*, 17 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 21 with distances

60 m126, Great Portland Street W1Grade II
91 m94, Great Portland Street W1Grade II
94 m26-30, Portland Place W1Grade II*
102 m38, Langham Street W1Grade II
106 m40, Langham Street W1Grade II
108 m32, Portland Place W1Grade II
109 m73, New Cavendish Street W1Grade II
109 mBroadcasting HouseGrade II*
111 m42, Langham Street W1Grade II
115 mMaitland Cook (the London Private Hospital)Grade II
116 mStatue of Quintin Hogg (in Centre of Road Opposite North End of Broadcasting House)Grade II
116 m93, Great Titchfield Street W1Grade II
119 m95, Great Titchfield Street W1Grade II
122 m97, Great Titchfield Street W1Grade II
123 m99, Great Titchfield Street W1Grade II
123 m73-77, Great Titchfield Street W1Grade II
124 m1 and 3, Riding House Street W1Grade II
125 m101, Great Titchfield Street W1Grade II
135 m78 and 80, Great Portland Street W1Grade II
136 mChurch of All Souls, Langham PlaceGrade I
145 m17-21, Portland Place W1Grade II*

Historic England ↗

Also on the record

Inside the City of Westminster built-up area.

Not affected

Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 11 September 2026. Historic England, the Environment Agency, Natural England 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: W1W 6JE
Received: 24 Jul 2026
Validated: 24 Jul 2026
Ward: West End
Case officer: Show
Target decision: 18 Sept 2026
Applicant: Show
Agent: Newmark

Decision outlook

Day 52 of the 56-day target. Westminster usually decides extensions by day 53.

prediction

Day 524 days to the 56-day target

62%decided within 8 weeks

87%approved

930decided in the last year

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

Public comments

No public comments yet.

5 neighbours consulted · Last counted 12 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference: PP-15070766
Comments by: 26 Aug 2026
Site or press notice: 5 Aug 2026
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 Approved

Change of Use of 10 Hallam Street, a Commercial, Business, Services (Use Class E) to Dwel…

25/03482/P3JPA 28 Jul 2025

2025 Approved

Change of Use of 8 Hallam Street, a Commercial, Business, Services (Use Class E) to Dwell…

25/03481/P3JPA 28 Jul 2025

Within ~100m

Nearby activity

2025

14 Hallam Street London W1W 6JG

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

25/06730/AD7 18 Sep 2025

2025 Approved

Christchurch Gardens Victoria Street London SW1H 0AY

Display of one externally illuminated 15ft Christmas Tree with lights measuring 6.6m x 2m…

25/05275/ADV 12 Sep 2025

2025 Approved

Horse And Groom Public House 128 Great Portland Street London W1W 6PS

Display of non-illuminated hanging sign measuring 1.4m x 0.97m

25/03838/ADV 27 Jun 2025

2025

87 Great Portland Street London W1W 7LU

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

25/02266/AD7 3 Apr 2025

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 10 Feb 2025

2025

28 Portland Place London W1B 1LY

Replacement of external modern staircase dome and installation of new internal chimneypie…

25/00558/LBC 28 Jan 2025

2024

94 Great Portland Street London W1W 7NU

Shopfront alterations, installation of a/c and extract within the lightwell, installation…

24/08530/LBC 6 Dec 2024

2024

94 Great Portland Street London W1W 7NU

Display of two externally illuminated fascia signs each measuring 0.33m x 2.31m and one e…

24/08521/ADV 6 Dec 2024

2024

94 Great Portland Street London W1W 7NU

Use of two areas of the public highway measuring 3.64m x 1.59m and 6.80m x 1.61m for plac…

24/08522/TCH 6 Dec 2024

2024

94 Great Portland Street London W1W 7NU

Shopfront alterations, installation of a/c and extract within the lightwell, internal fit…

24/08529/FULL 6 Dec 2024

2024

107 - 109 Great Portland Street London W1W 6QG

Installation of louvres to existing plant rooms at roof level.

24/08012/FULL 18 Nov 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

94 Great Portland Street London W1W 7NU

Display of X2 externally illuminated fascia signs and X1 projecting sign measuring 0.415m…

24/05502/ADV 9 Aug 2024

2024

94 Great Portland Street London W1W 7NU

Replacement shopfront ; installation of externally-illuminated fascia signs and projectin…

24/05499/LBC 9 Aug 2024

2024

94 Great Portland Street London W1W 7NU

Shopfront alteration; installation of A/C and extract into the plant area on the roof; an…

24/05498/FULL 9 Aug 2024

2024 Approved

Wogan House 99 Great Portland Street London W1W 7NY

Removal of existing mechanical and electrical plant equipment and introduction of new con…

24/00953/FULL 9 Apr 2024

2023 Approved

Ground Floor 106 Great Portland Street London W1W 6PF

Display of non-illuminated awning measuring 1.55m x 4.59m.

23/07681/ADV 20 Nov 2023

2023 Approved

Basement And Ground Floor 102 Great Portland Street London W1W 6PD

New metal louvres to shopfront.

23/01766/FULL 9 Oct 2023

2023 Approved

Harford House 101 - 103 Great Portland Street London W1W 6QE

Installation of replacement external rooftop plant.

23/03307/FULL 9 Aug 2023

2023 Approved

12 Hallam Street London W1W 6JF

Replacement of windows with double glazed timber windows; installation of air conditionin…

23/02806/FULL 28 Jul 2023

2018 Approved

1 Duchess Street London W1W 6AN

Display for a temporary period of six months of a non-illuminated estate agents board att…

18/03863/AD7 4 Jun 2018

2018 Approved

Egton House 16 Langham Street London W1W 6BS

Installation of a secondary roller shutter door in an existing loading bay immediately be…

18/02751/LBC 21 May 2018

2018 Approved

130 Great Portland Street London W1W 6PT

Use of ground and basement floors as either / or a composite use comprising shop at groun…

18/01086/FULL 24 Apr 2018

2018 Approved

105 Great Portland Street London W1W 6QF

Use of the ground and basement floors as educational premises (Class D1) for a period to…

18/00302/FULL 8 Mar 2018

2018 Withdrawn

1 Duchess Street London W1W 6AN

Display for a temporary period of six months of a non-illuminated estate agents board att…

18/01623/AD7 6 Mar 2018

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

8 - 10 Hallam Street London W1W 6JE Data via plota.co.uk

Proposal

Application progress

Documents 71

Statements & assessments 13

Plans & drawings 49

Application forms 1

Consultation & comments 2

Other documents 6

Site constraints 7

Other new applications on this street

Nearby new applications

Important details

Decision outlook

Public comments

Consultation & key dates

Previous applications at this address

Nearby activity