56 - 60 Weymouth Street London W1G 6NX Data via plota.co.uk

26/06446/NMA - Non-material amendments Approved

Proposal

Amendments to planning permission dated 31st October 2025 (RN: ) for Installation of a green roof and external rooftop plant / machinery with associated acoustic enclosures, alongside fenestration alterations to accommodate louvres and ductwork, in connection with an MRI diagnostics centre. Namely, to amend the wording of condition 6 which relates to biodiversity management plan to allow it to be discharged prior to occupation. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
21 Sept 2026
✓
Approved
2 Oct 2026

Approved on 2 Oct 2026 · Last checked 6 Oct 2026

Associated applications 2

  • Part of

    Fullcouncil archive

    Conditions 6 varied

    • AmendmentAmendments to planning permission dated 31st October 2025 (RN) for Installation of a green…This application26/06446/NMA

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 Named permitted development rights are withdrawn here.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 2.6
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
17 listed buildings within 150 m; National infrastructure project 406 m away: London Strategic Heat Main Project, at pre-application; Inside the City of Westminster built-up area; Public transport access: PTAL 6b (excellent), TfL 2023, for the 100 m square; Town centre 4 m away: Marylebone High Street.
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.

Sales history 1

Last sold for £4,500,000 in July 2024. Other property, leasehold.

3 July 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 area901 m² (9,698 sq ft)
Energy ratingB (asset rating 40)
UseResidential Spaces
HeatingAir Conditioning

From the energy performance certificate lodged in September 2026, the latest held for this property. The building may have changed since. View the certificate

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Important details

Application type
Non-material amendments
Postcode
W1G 6NX
Received
21 Sept 2026
Validated
21 Sept 2026
Ward
Marylebone
Case officer
Show
Target decision
19 Oct 2026
Decision
Application Permitted
Decision date
2 Oct 2026
Applicant
Show
Agent
Lichfields
Leaseholder
Show

Public comments

No public comments yet.

Last counted 6 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15228892
Planning Portal ref
PP-15228892
Env. assessment
No
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

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

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.