Basement And Ground Floor Maisonette 15 Guildhouse Street London SW1V 1JB Data via plota.co.uk

26/06108/FULL - Full Planning Permission Application Pending
Extensions & alterations

Proposal

Installation of a glazed winter garden in the courtyard. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
7 Sept 2026
Decision
Expected by 2 Nov 2026

Under consideration

No decision has been issued yet. Plota predicts a decision by 6 Nov 2026, from Westminster's recent extensions.

The consultation period closed on 14 Oct 2026.

Documents 5

Statements & assessments 1

PDF HERITAGE STATEMENT Design and Access Statement · 7 Sept 2026 View ↗

Plans & drawings 2

PDF LOCATION PLAN Location Plan · 7 Sept 2026 View ↗ PDF EXISTING AND PROPOSED PLAN, ELEVATIONS Drawing · 7 Sept 2026 View ↗

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 7 Sept 2026 View ↗

Other documents 1

PDF RECEIPT OF APPLICATION Other · 14 Sept 2026 View ↗

All documents on the council site ↗

Site constraints 12

Flood zone 3, rivers and sea
High chance: a 1 in 100 or greater annual chance from rivers, or 1 in 200 from the sea. Any development here needs a flood risk assessment. Defences are not counted.
The Environment Agency flood map for planning. Homes in zone 3 must also pass the sequential test. Surface water flooding is a separate map.
Flood map ↗
Pimlico conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Council document ↗
Article 4 direction
Article 4 Basement Development Permitted Rights Removed. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Archaeological priority area: City of Westminster APA 3.2
An assessment or field evaluation may be asked for before ground works.
The council or Historic England considers archaeology likely here. A desk-based assessment, and sometimes trial trenching, can be asked for with the application.
Air quality management area: Westminster AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
National infrastructure project 500 m away: Thames Tideway Tunnel
The site is 500 m from the project boundary. Waste water treatment, decided. The project page says whether consent was granted. Also within 2 km: London Strategic Heat Main Project (at pre-application, 2 m).
Nationally significant infrastructure projects (power stations, electricity lines, pipelines, major roads and railways, harbours, airports and reservoirs) are consented by a Secretary of State under the Planning Act 2008, after an examination by the Planning Inspectorate, rather than by the council. The boundary is the one the Inspectorate consults on and can change as the scheme does. Projects are shown within 2 km of the site.
Planning Inspectorate project page ↗
Central activities zone
The core of central London in the London Plan.
Offices, culture and the other strategic functions of the centre take priority over new housing here.
Also on the record
7 listed buildings within 150 m; Registered park or garden 110 m away: Warwick Square; Inside the City of Westminster built-up area; Public transport access: PTAL 6b (excellent), TfL 2023, for the 100 m square; Town centre 31 m away: Warwick Way/ Tachbrook Street.
Not affected
Not green belt · No scheduled monument at the site

Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

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Important details

Council
Westminster
Application type
Full Planning Permission Application
Postcode
SW1V 1JB
Received
7 Sept 2026
Validated
7 Sept 2026
Ward
Pimlico North
Case officer
Show
Target decision
2 Nov 2026
Applicant
Show

Decision outlook

Day 52 of the 56-day target. Westminster usually decides extensions by day 55.

Day 524 days to the 56-day target
56%decided within 8 weeks
88%approved
1,688decided in the last year

Plota live figures for extensions decided by Westminster in the last twelve months, from validation. Westminster decision record →

Public comments

No public comments yet.

3 neighbours consulted · Last counted 27 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15206811
Planning Portal ref
PP-15206811
Comments by
14 Oct 2026
Site or press notice
23 Sept 2026
Env. assessment
No

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025
93 - 94 Wilton Road London SW1V 1DW
Installation of replacement external plant, including supply and extract ducts and conden…
25/08307/FULL
2025
36 Longmoore Street London SW1V 1JF
Installation of door to front basement lightwell; new door opening at ground floor rear e…
25/08211/FULL
2025
11 Belgrave Road London SW1V 1TS
Installation of a metal gate at existing recess on Guildhall Street.
25/07825/FULL
2025
11 Belgrave Road London SW1V 1TS
Partial change of use of the existing cafe/ restaurant unit to office (Class E).
25/07512/FULL
2025
70 - 71 Wilton Road London SW1V 1DE
Variation of Condition 4 of planning permission dated 07 May 2024 (24/01258/FULL) for ret…
25/07420/FULL
2025
82 Wilton Road London SW1V 1DL
Alterations to shopfront including installation of replacement doors to front elevation…
25/07316/FULL
2025 Approved
80 Warwick Square London SW1V 2AR
Replacement of existing UPVC windows on front first floor with traditional timber frame F…
25/04472/LBC
2025 Approved
80 Warwick Square London SW1V 2AR
Replacement of existing UPVC windows on front first floor with traditional timber frame F…
25/05286/FULL
2025
Ground Floor Flat C 26 Belgrave Road London SW1V 1RG
Rear roof terrace and access door to this at ground floor level.
25/01092/FULL
2025
26 Belgrave Road London SW1V 1RG
Alterations and extension to basement flat including rear courtyard infill extension, fro…
25/01068/FULL
2024
83 Wilton Road London SW1V 1DL
Installation of vertical gas pipe to front elevation.
24/06495/FULL
2024 Withdrawn
Basement And Ground Floor 89 Wilton Road London SW1V 1DN
Display of internally illuminated fascia and hanging signs measuring 0.68m x 3.98m and 0…
24/02855/ADV
2024 Withdrawn
Basement And Ground Floor 89 Wilton Road London SW1V 1DN
Replacement shopfront; replacement of rear door and window; installation of awning canopy…
24/02854/FULL
2024 Approved
70-71 Wilton Road London SW1V 1DE
Retention of the conservatory at front ground floor level of restaurant for a temporary p…
24/01258/FULL
2024
Development Site At 52 To 73 Wilton Road London
Demolition of two water tanks at roof level of 64-65 and 66-71 Wilton Road [Confirmation…
24/02876/CLOPUD
2024 Approved
99 Wilton Road London SW1V 1DT
Display of an internally illuminated projecting sign measuring 0.45m x 0.45m and two non…
24/00400/ADV
2023
Parklet Adjacent To Globe House 89 Eccleston Square London
Retention of a 'parklet' on the pavement area comprising of seating and vegetated planter…
23/08320/FULL
2023 Approved
83 Wilton Road London SW1V 1DL
Alterations at roof level to enlarge roofspace with new sloping roof with conservation ro…
23/04399/FULL
2023 Approved
42-44 Warwick Way London SW1V 1RY
Display of halo-illuminated ATM surround with internally illuminated lettering, measuring…
23/03347/ADV
2023 Approved
42-44 Warwick Way London SW1V 1RY
Installation of an ATM to the right of entrance door.
23/03346/FULL
2017 Approved
17 Guildhouse Street London SW1V 1JB
T1 1 x Mimosa (rear): Reduce crown spread over neighbouring properties to east and west b…
17/05004/TCA
2017 Approved
Flat 1 92 Wilton Road London SW1V 1DW
Retention of door to terrace, windows on rear elevation and air conditioning compressor a…
17/00816/FULL
2016 Approved
17 Belgrave Road London SW1V 1RB
Removal of existing signage and installation of a non-illuminated plaque sign (610mmx400m…
16/11004/ADV
2016 Refused
Basement And Ground Floor 79 Wilton Road London SW1V 1DL
Erection of a rear single storey extension at first floor level
16/10929/FULL
2016 Withdrawn
Flat 1 92 Wilton Road London SW1V 1DW
Retention of door to terrace, windows on rear elevation and air conditioning compressor a…
16/10200/FULL
Westminster
Planning Authority Score
3.5/10
Below average
#221 of 296 councils
Relevant to this application:
Householder decisions

Westminster is slower than most councils at deciding householder applications, ranking #258 out of 296. Only 28% of applications have the time limit extended, well below the 41% 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 81% approved vs 90% nationally.

One of the strictest councils
only 81% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Westminster decision statistics
Based on MHCLG data, the year to March 2026
86%
Overall approval rate
Below avg (87%) #201 of 296
81%
Householder approved
Below avg (90%) #277 of 296
44%
Decided in 8 weeks
Below avg (63%) #258 of 296
28%
Extended time limit
Below avg (41%) #46 of 296
83%
Minor dwellings approved
12 decided (1-9 homes)
67%
Major dwellings approved
3 decided (10+ homes)
81%
Change of use approved
133 decided
4,602
Total decisions
648 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use