Basement And Ground Floor 9 Mount Street London W1K 3NG Data via plota.co.uk

26/04068/ADLBC - Approval of Details (ADLBC) Pending
Listed buildingsUtility infrastructure

Proposal

Details/specifications of the new condensors pursuant to condition 5 of listed building dated 28th May 2026 (RN:26/00240/LBC) Linked with 26/04120/ADFULL Data via plota.co.uk

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View original council record ↗

Application progress

✓
Received
19 Jun 2026
Decision
Awaiting decision

This application is under consideration - no decision has been issued yet.

Documents 11

Application forms 3

PDF APPLICATIONFORMREDACTED Application Form · 19 Jun 2026 View ↗ PDF FEECALCULATION Background Papers · 19 Jun 2026 View ↗ PDF RUBBER SUPPORT FEET Other · 19 Jun 2026 View ↗

Other documents 8

PDF RECEIPT OF APPLICATION Other · 22 Jun 2026 View ↗ PDF ATTACHMENTSUMMARY Background Papers · 19 Jun 2026 View ↗ PDF DATA SHEET - TS COVER Other · 19 Jun 2026 View ↗ PDF AIR CONDITIONING TECHNICAL DATA Other · 19 Jun 2026 View ↗ PDF RR FANS Other · 19 Jun 2026 View ↗ PDF VRV IV S-SERIES COMPACT HEAT PUMP AIR CONDITIONING TECHNICAL DATA RXYSCQ-TV1 Other · 19 Jun 2026 View ↗ PDF SKY AIR ADVANCE-SERIES AIR CONDITIONING TECHNICAL DATA RZASG-MV1 Other · 19 Jun 2026 View ↗ PDF COVER LETTER Other · 19 Jun 2026 View ↗

All documents on the council site ↗

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119A Mount Street London W1K 3NL

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Details of CCTV to rear pursuant to condition 3 of listed building consent dated...

26/01825/ADLBC - 20 Mar 2026

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17 - 21 South Audley Street London W1K 2NY

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Important details

Council
Westminster
Application type
Approval of Details (ADLBC)
Postcode
W1K 3NG
Received
19 Jun 2026
Validated
19 Jun 2026
Ward
West End
Case officer
Track to view
Target decision
14 Aug 2026
Applicant
Track to view
Agent
Knight Frank

Consultation & key dates

Alt. reference
PP-15024700
Env. assessment
No

Historical activity at this location

27 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2025
Installation of external air conditioning unit to rear elevation. (Retrospective) Linked…
25/01322/LBC
2025
Installation of external air conditioning unit to rear elevation. (Retrospective) Linked…
25/01321/FULL
Within ~100m

Nearby activity

2025
Penthouse A 21 Davies Street London W1K 3DE
Replacement of all windows and doors, including their frames, on the upper level (6th flo…
25/07862/FULL
2025 Approved
Third Floor And Fourth Floor Rear 128 Mount Street London W1K 3NU
Replacement of existing access hatch, ladder and internal loft with an Automatic Opening…
25/05410/FULL
2025
119 Mount Street London W1K 3NL
Internal alterations at ground and lower ground floor levels associated within fit-out of…
25/07561/LBC
2025
5 Mount Street London W1K 3NE
External alterations including the removal of existing plant equipment and installation o…
25/07581/LBC
2025
5 Mount Street London W1K 3NE
External alterations including the removal of existing plant equipment and installation o…
25/07580/FULL
2025
Connaught Hotel Carlos Place London W1K 2AL
Display of one externally illuminated Christmas tree and decorations measuring 10m x 4m.
25/07549/ADV
2025 Refused
5 Mount Street London W1K 3NE
Installation of retractable awnings; removal of existing plant equipment and installation…
25/05647/FULL
2025 Refused
5 Mount Street London W1K 3NE
Installation of retractable awnings; removal of existing plant equipment and installation…
25/05648/LBC
2025
35 Berkeley Square London W1J 5BF
Formation of new office at ground floor level including replacement of front steps along…
25/07217/LBC
2025 Approved
Third Floor And Fourth Floor Rear 128 Mount Street London W1K 3NU
Replacement of existing access hatch, ladder and internal loft with an Automatic Opening…
25/05411/LBC
2025 Approved
9 Carlos Place London W1K 3AT
Installation of two ASHP units located in the ground floor rear courtyard area within an…
25/04492/FULL
2025 Approved
29 Farm Street London W1J 5RL
Installation of motorised iron gates to car park entrance for security purposes.
25/04602/FULL
2025
120 Mount Street London W1K 3NN
Raise existing ground-level timber floor boards in order to clear the void before install…
25/05811/LBC
2025
Flat 2 49 Grosvenor Square London W1K 3EP
Installation of two air condenser units at roof level and two ventilation grills in rear…
25/05833/FULL
2025 Approved
119 Mount Street London W1K 3NL
Internal alterations for adaptation to existing building services at ground and lower gro…
25/04597/LBC
2025 Withdrawn
Basement And Ground Floor 5 Mount Street London W1K 3NE
Replacement of existing plant equipment to the rear external lightwell; fascia, hanging a…
25/03732/LBC
2025 Withdrawn
Basement And Ground Floor 5 Mount Street London W1K 3NE
Replacement of existing plant equipment to the rear external lightwell and internal and e…
25/03731/FULL
2025 Approved
Basement And Ground Floor 5 Mount Street London W1K 3NE
Display of one internally illuminated fascia signs measuring 1.70m x 0.11m, and one inter…
25/03729/ADV
2025
Basement And Ground Floor Rear 127 Mount Street London W1K 3NT
Installation of air conditioning units within the rear lightwells; erection of an extract…
25/02531/LBC
2025
127 Mount Street London W1K 3NT
Variation of condition 1 of planning permissiond ated 8th May 2024 (RN 23/04885/FULL) for…
25/02255/FULL
2020 Withdrawn
128 Mount Street London W1K 3NU
Internal alterations at basement, ground and rear first and second floors, including demo…
20/01853/LBC
2020 Approved
27 Farm Street London W1J 5RJ
Erection of a single storey extension, creation of a new step-free office entrance, exter…
20/01610/FULL
2020 Approved
Ground Floor 120A Mount Street London W1K 3NN
Internal alterations at ground floor level.
20/02189/LBC
2020 Approved
120A Mount Street London W1K 3NN
Display of one non illuminated fascia sign measuring 0.7m x 4.4m, two internally illumina…
20/02182/ADV
2019 Approved
Berger House 36-38 Berkeley Square London W1J 5AE
Demolition of the existing building and redevelopment of the site to provide a new office…
19/09409/FULL
Westminster
Planning Authority Score
3.7/10
Below average
#209 of 292 councils
Relevant to this application:
Householder decisions

Westminster is slower than most councils at deciding householder applications, ranking #227 out of 292. 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%) #200 of 292
79%
Householder approved
Below avg (90%) #279 of 292
53%
Decided in 8 weeks
Below avg (64%) #227 of 292
27%
Extended time limit
Below avg (40%) #43 of 292
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
Source: MHCLG planning statistics · See full council rankings