Investcorp House 48 Grosvenor Street London W1K 3HW

Pending 26/01687/FULL
Council
Date received
16 Mar 2026
Date validated
16 Mar 2026
Postcode
W1K 3HW

Description

Infill of vehicle garage access on Mount Row, infill of lightwell and skylights at ground floor level, renewing glass facade of link building, new plant on roof.

4.3/10
Planning Authority Score
#184 of 282

Westminster ranks #172 out of 282 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%) #193 of 282
79%
Householder approved
Below avg (90%) #268 of 282
67%
Decided in 8 weeks
Below avg (71%) #172 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