1 The Court House 165 Seymour Place London W1H 4PU Data via plota.co.uk

26/05200/FULL - Full Planning Permission Application Pending

Proposal

Installation of waterproofing system to the existing lead flat roofs Data via plota.co.uk

View original council record ↗Last checked

Application progress

Received
3 Aug 2026
Validated
26 Aug 2026
Decision
Expected by 21 Oct 2026

This application is under consideration - no decision has been issued yet. Plota predicts a decision between 14 Oct 2026 and 21 Oct 2026, from Westminster's recent extensions. Comments are open until 7 Oct 2026.

Comment on this application ↗

Site constraints 8

Portman Estate 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 Named permitted development rights are withdrawn here.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.
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.
22 listed buildings within 150 m
Nearest: Walmer House, Grade II, 39 m away · 1 Grade I, 21 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 22 with distances
Historic England ↗
Also on the record
Heritage at risk 74 m away: Former Samaritans Hospital for Women, 161 Marylebone Road NW1; Inside the City of Westminster built-up area; Town centre 29 m away: Marylebone Road.
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

Application type
Full Planning Permission Application
Postcode
W1H 4PU
Received
3 Aug 2026
Validated
26 Aug 2026
Ward
Marylebone
Case officer
Show
Target decision
21 Oct 2026
Applicant
Show

Decision outlook

Day 17 of the 56-day target. Westminster usually decides extensions by day 53.

Day 1739 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.

Last counted 9 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15090764
Comments by
7 Oct 2026
Site or press notice
16 Sept 2026
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