Byron House 7 - 9 St James's Street London SW1A 1EE Data via plota.co.uk

26/05166/FULL - Full Planning Permission Application Pending
Admin / proceduralCommercial premises

Proposal

Variation of Conditions 4 and 5 of planning permission dated 16 June 2025 (Ref: ) for the remodelling of the existing seventh-floor roof extension, including enlarged window openings, timber louvres to the existing plant area and creation of a roof terrace with metal balustrade and planter boxes. Namely to allow extended hours of use of the terrace (08:00 to 23:30 Monday to Thursday; 08:00 to 00:00 Friday and Saturday; and 08:00 to 22:30 Sunday), third-party use and the playing of music on the terrace. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
31 Jul 2026
Decision
Target date was 25 Sept 2026

Under consideration

No decision has been issued yet. A decision is expected by 25 Sept 2026.

The consultation period closed on 9 Sept 2026.

Documents 5

Statements & assessments 2

PDF ACOUSTIC STATEMENT BYRON HOUSE ROOF BAR LONDON 2623808-RDS Noise impact assessment · 31 Jul 2026 View ↗ PDF ROOFTOP LIGHTING STATEMENT / TECHNICAL NOTE Background Papers · 31 Jul 2026 View ↗

Plans & drawings 1

PDF OPERATIONAL MANAGEMENT PLAN BYRON HOUSE Background Papers · 31 Jul 2026 View ↗

Other documents 2

PDF RECEIPT OF APPLICATION Other · 4 Aug 2026 View ↗ PDF COVER LETTER Background Papers · 31 Jul 2026 View ↗

All documents on the council site ↗

Associated applications 2

  • Part of

    Fullcouncil archive

    Conditions 4, 5 variation sought

    • VariationVariation of Conditions 4 and 5 of planning permission dated 16 June 2025 for the remodelling…This application26/05166/FULL

Site constraints 12

St James's 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 Named permitted development rights are withdrawn here.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.
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 ↗
Town centre: West End
A designated centre in the London Plan.
Shops, services and active frontages are protected in centres, and main town centre uses are steered here first.
58 listed buildings within 150 m
Nearest: 10, ST JAMES'S STREET SW1 (See details for further address information), Grade II, 11 m away · 10 Grade I, 12 Grade II*, 36 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 58 with distances
Historic England ↗
National infrastructure project 503 m away: Thames Tideway Tunnel
The site is 503 m from the project boundary. Waste water treatment, decided. The project page says whether consent was granted. Also within 2 km: London Strategic Heat Main Project (at pre-application, 315 m).
Nationally significant infrastructure projects (power stations, electricity lines, pipelines, major roads and railways, harbours, airports and reservoirs) are consented by a Secretary of State under the Planning Act 2008, after an examination by the Planning Inspectorate, rather than by the council. The boundary is the one the Inspectorate consults on and can change as the scheme does. Projects are shown within 2 km of the site.
Planning Inspectorate project page ↗
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
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
Registered park or garden 197 m away: St James's Square; 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 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.

Building

Floor area489 m² (5,264 sq ft)
Energy ratingB (asset rating 28)
UseRestaurants and Cafes/Drinking Establishments/Takeaways
HeatingAir Conditioning

From the energy performance certificate lodged in June 2026, 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
SW1A 1EE
Received
31 Jul 2026
Validated
31 Jul 2026
Ward
St James's
Case officer
Show
Target decision
25 Sept 2026
Applicant
Show
Agent
c/o Savills
Leaseholder
Show

Public comments

4comments received
4 objecting

100% object · above the UK average of 74%

153 neighbours consulted · Last counted 18 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15091816
Planning Portal ref
PP-15091816
Comments by
9 Sept 2026
Site or press notice
19 Aug 2026
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 Approved
Details of framing, panelling and door at scale 1:20 or 1:10 and photographs of material…
25/03187/ADFULL
2025
Alterations to existing level 7 roof extension including new enlarged openings, timber lo…
25/03133/FULL
2024
Replacement of the fenestration to the ground floor office entrance and associated minor…
24/05732/FULL
Within ~100m

Nearby activity

2025
3 St James's Street London SW1A 1EG
Installation of original gas lantern.
25/05974/COLBC
2025
1 Pickering Place London SW1A 1EA
Installation of original gas lantern (1 - 4 Pickering Place)
25/05973/COLBC
2025 Approved
Almack House 28 King Street St James's London SW1Y 6QW
Installation of new condenser units to roof of building.
25/01797/FULL
2025 Approved
8 King Street St James's London SW1Y 6QT
Display of a non illuminated image on a hoarding measuring 14.3m X 9.6m for a temporary p…
25/03786/ADV
2025
Almack House 28 King Street St James's London SW1Y 6QW
Installation of new condenser units to roof of building.
25/03418/FULL
2025
69 - 70 St James's Street London SW1A 1PJ
Cleaning of the Portland Stone elevation facing onto St James's Street.
25/01907/LBC
2024
Almack House 28 King Street St James's London SW1Y 6QW
Installation of plant equipment within existing lightwell along the western building boun…
24/07404/FULL
2024
78 St James's Street London SW1A 1LF
Internal office fit to newly renovated extension. Existing space is currently newly refur…
24/06477/LBC
2024
30 Bury Street London SW1Y 6AU
Interior fit out of the unit comprising architectural wall and ceiling linings, and subst…
24/04001/LBC
2024 Approved
Quadrant House 55 - 58 Pall Mall London SW1Y 5JH
Display of non-illuminated hoarding measuring 5.99m x 12.25m fronting Pall Mall for a tem…
24/03073/ADV
2024 Approved
5 St James's Place London SW1A 1NP
Display for a temporary period of six months of a non-illuminated 'to let' board attached…
24/02373/AD7
2023 Approved
19 Crown Passage London SW1Y 6PP
Installation of one air-conditioning unit wall mounted at rear second floor level.
23/07682/FULL
2024 Approved
Byron House 7-9 St James's Street London SW1A 1EE
Alterations to shopfront.
24/00692/FULL
2024 Approved
6 St James's Street London SW1A 1EF
Replacement roof lantern and new associated flashings; installation of a new flagpole to…
24/00003/FULL
2024 Approved
Byron House 7-9 St James's Street London SW1A 1EE
Display of two awnings measuring 1.9m x 2m and 1.9m x 3m.
24/00694/ADV
2024
Almack House 28 King Street St James's London SW1Y 6QW
Alterations to existing terraces to provide level access and the creation of three new ac…
24/00862/FULL
2023 Approved
78 St James's Street London SW1A 1LF
Fit out of the modern first floor office unit
24/00339/CLLB
2024
6 St James's Street London SW1A 1EF
Replacement roof lantern and new associated flashings; installation of a new flagpole to…
24/00004/LBC
2023 Withdrawn
Byron House 7-9 St James's Street London SW1A 1EE
Installation of shopfront.
23/07553/FULL
2023 Approved
20 King Street St James's London SW1Y 6QY
Internal alterations at first floor level including addition of partitions and other asso…
23/08073/LBC
2019 Approved
20 King Street St James's London SW1Y 6QY
Alterations at roof level to extend the lift overrun enclosure and creation of a roof ter…
19/07393/FULL
2019 Approved
Flat 30 73 St James's Street London SW1A 1PH
Installation of a condenser unit on the roof.
19/07379/FULL
2019 Approved
45 St James's Place London SW1A 1NS
Variation of condition 1 of planning permission dated 08th March 2018 (RN 17/10009/FULL)…
19/02337/FULL
2019 Approved
45 St James's Place London SW1A 1NS
Variation of condition 1 of listed building consent dated 08th March 2018 (RN 17/09877/LB…
19/02459/LBC
2019 Withdrawn
69-70 St James's Street London SW1A 1PJ
Variation of condition 6 of planning permission dated 31st May 2017 (RN:17/01382/FULL) 'V…
19/04383/FULL
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

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.

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.