30 Grosvenor Square London W1K 6AN

Pending 26/03111/NMA
Council
Date received
12 May 2026
Date validated
12 May 2026
Postcode
W1K 6AN

Description

Amendments to planning permission dated 7th April 2025 (RN:24/05111/FULL) for Variation of conditions 1 and 46 of planning permission dated 18 February 2021 (RN 20/06601/FULL) for, 'Alterations to the existing building including retention & repair of the front and side facades, part demolition & replacement of the rear facade, rear extension of the 2nd-5th floors, removal of existing & introduction of a new 6th floor, introduction of a new set-back 7th floor, extension of the existing basement levels to include two additional basement levels (including one mezzanine level), installation of roof plant & plant screen, public realm works including hard & soft landscaping, removal of the security kiosks, fencing, bollards & gates/barriers to Blackburne's Mews & Culross Street, removal & replacement of 6 No. trees in front of the Grosvenor Square elevation & re-opening of the road on the western side of the Square, all in connection with the use of the building as a hotel (Class C1) with flexible retail/restaurant use at 1st floor, ground floor and basement 1 (Class A1/Class A3/Class C1), flexible restaurant/bar use at 7th floor (Class A3/Class A4/Class C1), leisure/spa facilities within the basement (Class D2/Class C1) & an ancillary ballroom, event spaces, back of house facilities & associated car, cycle parking & servicing facilities accessed from Blackburne's Mews, & other associated works'. Namely, to extend the permitted hours of operation to enable the operator to open at 06.30.

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