17 St Leonard's Terrace, London, SW3 4QG Data via plota.co.uk

LB/26/04595 - Listed Building Consent Approved
DemolitionExtensions & alterations

Proposal

Refurbishment and alteration of dwellinghouse, including internal alterations; works at lower ground floor level; demolition and replacement of rear extension; formation of a roof terrace with associated privacy screening; repair and refurbishment of roof; refurbishment and strengthening of upper-level staircase; installation of mechanical plant and associated enclosure; landscaping works; and associated external alterations. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
25 Aug 2026
✓
Approved
15 Oct 2026

Approved on 15 Oct 2026 · Last checked 18 Oct 2026

Documents

View the documents on the council's website ↗

Site constraints 10

17 listed buildings within 150 m of the postcode pin
Nearest: 14-18, St Leonard's Terrace Sw3, Grade II, the postcode pin is inside its outline · 1 Grade I, 16 Grade II
The site itself is not listed. Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show all 17 with distances
Historic England ↗
Royal Hospital 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 - No 100. Named permitted development rights are withdrawn here.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.
Tree preservation order
Consent is needed before work on protected trees.
Not every council has published its orders as open data, so no order shown is not proof there is none.
Air quality management area: Kensington and Chelsea 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 about 203 m away: Thames Tideway Tunnel
The site is about 203 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, about 403 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 ↗
Registered park or garden about 17 m away: ROYAL HOSPITAL, CHELSEA and RANELAGH GARDENS
Its setting is a consideration for work nearby.
Registered parks and gardens, battlefields, world heritage sites and protected wrecks are designated heritage assets: harm needs clear and convincing justification.
Historic England ↗
Also on the record
Inside the Kensington and Chelsea built-up area; Public transport access: PTAL 5 (very good), TfL 2023, for the 100 m square; Designated open space about 27 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 6 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. 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.

Building

Floor area268 m² (2,885 sq ft)
Energy ratingD (55 out of 100), could reach C
PropertyMid-terrace house, 10 habitable rooms
BuiltBefore 1900
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in November 2025, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Other new applications on this street

24 Sept 2026Approved

20 St Leonard's Terrace, London, SW3 4QG

Prune 1 x Magnolia Grandiflora in rear garden

ARB/26/05156
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22 Jul 2026Approved

24 St Leonard's Terrace, London, SW3 4QG

Lowering floor level within storage space, formation of opening between vault an...

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7 Aug 2026Approved

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Important details

Council
Kensington and Chelsea
Application type
Listed Building Consent
Postcode
SW3 4QG
Received
25 Aug 2026
Validated
25 Aug 2026
Ward
Royal Hospital
Case officer
Show
Target decision
20 Oct 2026
Decision
Granted
Decision date
15 Oct 2026
Applicant
Show

How this decision compares

Decided in 51 days from validation, 50 days faster than Kensington and Chelsea's median of 101 for demolitions. Approved, as 92% of demolitions here are.

19%decided within 8 weeks
92%approved
113decided in the last year

Plota live figures for demolitions decided by Kensington and Chelsea in the last twelve months, from validation. Kensington and Chelsea decision record →

Consultation & key dates

Comments by
25 Sept 2026

Historical activity at this location

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

Within ~100m

Nearby activity

2025 Approved
7 Woodfall Street, London, SW3 4DJ
Raising of the chimney at No.7 Woodfall Street. (Retrospective Planning Application)
PP/25/06231
2025 Approved
32 St Leonard's Terrace, London, SW3 4QG
Prune 1 x Magnolia (front)
ARB/25/05400
2025 Approved
15 St Leonard's Terrace, London, SW3 4QG
Variation of Condition 2 (Compliance with approved drawings) of planning permission PP/21…
PP/25/05025
2025 Approved
15 St Leonard's Terrace, London, SW3 4QG
Various external and internal like-for-like replacement and repair works
LB/25/03887
2025 Approved
16 St Leonard's Terrace, London, SW3 4QG
Relocation of services from Garden Room to small section of flat roof on rear elevation…
LB/25/02717
2025 Withdrawn
5 Woodfall Street, London, SW3 4DJ
Minor Material Amendment concerning the existing chimney at 7 Woodfall Street, which encr…
PP/25/02227
2025 Approved
Flat 3, 39 Royal Avenue, London, SW3 4QE
Relocation of kitchen; alterations to door and floor build up details, alongside proposal…
LB/25/01617
2024 Approved
Flat 3, 28-30 Woodfall Street, London, SW3 4DJ
Variation of Conditions 2 (compliance with approved drawings) and 6 (external windows in…
PP/24/06965
2024 Approved
Flat 1, 39 Royal Avenue, LONDON, SW3 4QE
Replacement of existing conservatory and existing flat roof, on existing footprint; adjus…
LB/24/06669
2024 Approved
Flat 1, 39 Royal Avenue, LONDON, SW3 4QE
Replacement of existing conservatory and existing flat roof, on existing footprint; adjus…
PP/24/06668
2024 Withdrawn
4 Wellington Square, LONDON, SW3 4NJ
Alteration to rear garden. Demolition of timber decking, under croft, stairs and support…
LB/24/07128
2024 Withdrawn
4 Wellington Square, LONDON, SW3 4NJ
Alteration to rear garden. Demolition of timber decking, under croft, stairs and support…
PP/24/07127
2024 Approved
16 St Leonard's Terrace, LONDON, SW3 4QG
Replacement windows and doors, remodelling of rear extension to form garden room with pro…
LB/24/05775
2024 Approved
16 St Leonard's Terrace, LONDON, SW3 4QG
Replacement windows and doors, remodelling of rear extension to form garden room with pro…
PP/24/05774
2024 Approved
29 St Leonard's Terrace, LONDON, SW3 4QG
Prune 1 x Magnolia (front) and 1 x Ginkgo/Maidenhair (rear)
ARB/24/06731
2024 Approved
5 Wellington Square, LONDON, SW3 4NJ
Demolition and rebuilding of 5x storey rear outrigger. Demolition and rebuilding of rear…
LB/24/05117
2024 Approved
5 Wellington Square, LONDON, SW3 4NJ
Demolition and rebuilding of 5x storey rear outrigger. Demolition and rebuilding of rear…
PP/24/05116
2024 Withdrawn
30 St Leonard's Terrace, LONDON, SW3 4QG
Prune 1 x Magnolia (front) and 1 x Ginkgo/Maidenhair (rear)***WITHDRAWN***
ARB/24/06547
2024 Approved
Flat 3, 28-30 Woodfall Street, LONDON, SW3 4DJ
Replacement of flat roof with traditional double-pitched mansard roof; retention of three…
PP/24/04926
2024 Approved
5 Wellington Square, LONDON, SW3 4NJ
New step and light well finish to front of property.
LB/24/03321
2020 Approved
19 St Leonard's Terrace, London, SW3 4QG
Construction of full width rear extension at basement level. Removal of metalwork stair a…
PP/20/00854
2019 Withdrawn
19 St Leonard's Terrace, London, SW3 4QG
Construction of a full width rear extension at basement level; removal of a 1970s metalwo…
PP/19/07874
2019 Approved
19 Walpole Street, London, SW3 4QP
Prune 1 x Plane tree in rear garden.
ARB/19/08093
2019
23 Royal Avenue, LONDON, SW3 4QE
Details required by condition 3 (submission of details) of listed building consent 11/012…
CON/19/07239
2019 Approved
28 St Leonard's Terrace, London, SW3 4QG
Rebuilding of front garden wall between Nos. 28 and 29
LB/19/03928
Kensington and Chelsea
Planning Authority Score
5.1/10
Average
#144 of 296 councils
Relevant to this application:
Other decisions

Kensington and Chelsea ranks #174 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (94%) than the national average (90%).

These figures are council-wide context, not a prediction for this application. View full council performance
Kensington and Chelsea decision statistics
Based on MHCLG data, the nine months to December 2025
93%
Overall approval rate
Above avg (87%) #58 of 296
94%
Householder approved
Above avg (90%) #110 of 296
61%
Decided in 8 weeks
Below avg (63%) #174 of 296
40%
Extended time limit
Below avg (41%) #152 of 296
94%
Minor dwellings approved
455 decided (1-9 homes)
87%
Change of use approved
53 decided
1,839
Total decisions
135 refused in the nine months to December 2025
Source: MHCLG planning statistics · See full council rankings

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.