26 St Marys Mansions St Mary's Terrace London W2 1SQ Data via plota.co.uk

Pending 25/09249/FULL

Council

Westminster 3.5/10

Date received

22 Dec 2025

Date validated

22 Dec 2025

Postcode

W2 1SQ

Description

Replacement of all timber double-glazed windows at first floor level and installation of new air brick and flue to rear elevation. Data via plota.co.uk

Get alerts nearby Council site ↗

Last checked 3 Oct 2026, 13:10

Decision outlook

Plota predicted a decision around 5 Oct 2026; it is now day 287.

Day 287, past the statutory target. 74% of full applications in Westminster are decided within thirteen weeks; extensions of time are common, and the council need not decide on the day. Last seen undecided on 3 Oct 2026.

target

predicted

Day 287231 days past the 56-day target

42%decided within 8 weeks

86%approved

1,308decided in the last year

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

Site constraints 5

Paddington Green 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 Named permitted development rights are withdrawn here.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 ↗

Also on the record

5 listed buildings within 150 m; 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 3 October 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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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