17 Belgrave Square London SW1X 8PG

Pending 26/02370/NMA
Council
Date received
10 Apr 2026
Date validated
10 Apr 2026
Postcode
SW1X 8PG

Description

Amendments to planning permission dated 13th December 2019 (RN: 18/01324/FULL) for Demolition of annexe building and replacement with rear extensions to 17 Belgrave Square and excavations to create pool hall extension under garden of 17 Belgrave Square and basement beneath mews property; all in connection with the use of the mews property and 17 Belgrave Square as two single family dwelling houses. Namely to allow proposed reconfiguration and enhancement of the area between the Main House and the Mews, including the erection of a pergola structure, minor alterations to the rear annex openings, and updated rear garden layout.

4.3/10
Planning Authority Score
#182 of 277

Westminster ranks #169 out of 277 councils for householder decision speed. 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.

Westminster decision performance
Based on MHCLG data, 2025
86%
Overall approval rate
Below avg (87%) #189 of 277
79%
Householder approved
Below avg (90%) #263 of 277
67%
Decided in 8 weeks
Below avg (71%) #169 of 277
27%
Extended time limit
Below avg (40%) #41 of 277
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