57 Eaton Square London SW1W 9BG

Pending 26/03176/NMA
Council
Date received
14 May 2026
Date validated
18 May 2026
Postcode
SW1W 9BG

Description

Amendments to planning permission dated 4th August 2014 (RN:14/04167/FULL) for Amalgamation of 2 x 2 bed flats on lower ground and ground floor levels to create a 3 bed maisonette; installation of an external metal spiral staircase on the rear elevation to access the garden from ground floor level, and alterations to rear windows (site includes Flats 57 and 58a). Namely, to omit previously approved rear steel staircase, minor internal wall alterations.

Westminster
Planning Authority Score
3.8/10
Below average
#199 of 282 councils
Relevant to this application:
Householder decisions

Westminster is slower than most councils at deciding householder applications, ranking #220 out of 282. Only 27% of applications have the time limit extended, well below the 40% 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 79% approved vs 90% nationally.

One of the strictest councils
only 79% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Westminster decision performance
Based on MHCLG data, 2025
86%
Overall approval rate
Below avg (87%) #193 of 282
79%
Householder approved
Below avg (90%) #268 of 282
53%
Decided in 8 weeks
Below avg (64%) #220 of 282
27%
Extended time limit
Below avg (40%) #41 of 282
86%
Minor dwellings approved
14 decided (1-9 homes)
67%
Major dwellings approved
3 decided (10+ homes)
86%
Change of use approved
140 decided
4,828
Total decisions
669 refused in 2025