1 St Leonard's Terrace, London, SW3 4QA Data via plota.co.uk

LB/25/04426 - Listed Building Consent Approved

Proposal

Works at rear: rebuilding of ground floor scullery; construction of first floor extension; creation of first floor terrace; increase in height of 1st floor parapet (Cheltenham Terrace). Replacement and introduction of mansard roof at 3rd floor with small brick extension at rear to accommodate a lift. Alterations to windows at ground floor (lowering sills), introduction of slim profile double glazing, and refurbishment of external elevations. Internal refurbishment including reinstatement of original openings and plan form. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
15 Jul 2025
✓
Approved
15 Oct 2025

Approved on 15 Oct 2025 · Last checked 24 Oct 2026

Documents

View the documents on the council's website ↗

Associated applications 3

Site constraints 11

Grade II listed: 1-6, St Leonard's Terrace Sw3
List entry 1265800 · The pin is inside its outline · 10 more listed buildings within 150 m (1 Grade I, 2 Grade II*, 7 Grade II)
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 the other 10 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 Named permitted development rights are withdrawn here.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 201 m away: Thames Tideway Tunnel
The site is 201 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, 360 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 25 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 25 m away; Town centre 83 m away: King's Road (east).
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 1 November 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.

Sales history 1

Last sold for £10,250,000 in April 2023. Terraced house, freehold.

17 April 2023£10,250,000Recorded as a transfer outside a standard sale

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area464 m² (4,994 sq ft)
Energy ratingD (66 out of 100), could reach B
PropertyEnd-terrace house, 9 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in March 2022, 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

6 Jul 2026Approved

5 St Leonard's Terrace, London, SW3 4QA

Details required by condition 3 (submission of details) of listed building conse...

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24 Sept 2026Approved

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24 Sept 2026Approved

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25 Aug 2026Approved

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

Refurbishment and alteration of dwellinghouse, including internal alterations; w...

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2 Nov 2026Pending

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FELL and prune various as specified

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Important details

Council
Kensington and Chelsea
Application type
Listed Building Consent
Postcode
SW3 4QA
Received
15 Jul 2025
Validated
15 Jul 2025
Ward
Royal Hospital
Case officer
Show
Target decision
9 Sept 2025
Decision
Granted
Decision date
15 Oct 2025
Applicant
Show
Freehold owner
Show

How this decision compares

Decided in 92 days from validation, 8 days slower than Kensington and Chelsea's median of 84 for listed building consent. Approved, as 95% of listed building consent here are.

28%decided within 8 weeks
95%approved
549decided in the last year

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

Consultation & key dates

Comments by
22 Aug 2025

Historical activity at this location

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

This property

Previous applications at this address

2025 Approved
Works at rear: rebuilding of ground floor scullery; construction of first floor extension…
PP/25/04425
Within ~100m

Nearby activity

2025 Approved
5 St Leonard's Terrace, London, SW3 4QA
Erection of single storey rear extension at lower ground floor; reinstatement of internal…
LB/25/03734
2025 Approved
5 St Leonard's Terrace, London, SW3 4QA
Erection of single storey rear extension at lower ground floor; reinstatement of internal…
PP/25/03733
2025 Approved
Duke Of York's Headquarters Running Track, King's Road, London
Temporary use of the Duke of York's Headquarters Running Track from 05 November 2025 to 1…
PP/25/04504
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
2025 Approved
4 St Leonard's Terrace, London, SW3 4QA
Installation of three condenser units on roof
LB/25/00950
2025 Approved
4 St Leonard's Terrace, London, SW3 4QA
Installation of three condenser units on roof
PP/25/00949
2025 Approved
Duke Of York's Headquarters Running Track, King's Road, London
Temporary retention of the farmers market on Duke of York's Headquarters Running Track fr…
PP/25/01321
2025 Approved
Duke of York Square and Cavalry Square, London, SW3
Prune 1 x Tilia cordata
ARB/25/01455
2024 Withdrawn
5 St Leonard's Terrace, London, SW3 4QA
Erection of single storey rear extension at lower ground floor, reinstatement of internal…
PP/24/08199
2024 Withdrawn
5 St Leonard's Terrace, London, SW3 4QA
Erection of single storey rear extension at lower ground floor, reinstatement of internal…
LB/24/08294
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 Approved
Duke Of York's Headquarters Running Track, King's Road, LONDON, SW3 4RD
Prune 1x Platanus x hispanica (London Plane)
ARB/24/06407
2024 Approved
23 Royal Avenue, LONDON, SW3 4QE
Prune 1 x Fig in rear garden of 12 Walpole Street
ARB/24/02689
2024 Approved
18 Walpole Street, LONDON, SW3 4QP
Prune 1 x Olive (rear)
ARB/24/02329
2024 Approved
18 Walpole Street, LONDON, SW3 4QP
Demolition of existing conservatory and erection of replacement conservatory to rear elev…
PP/24/00391
2024 Approved
35 Walpole Street, LONDON, SW3 4QS
Prune 1 x Lime Tree back in rear garden.
ARB/24/00439
2023 Approved
29 Royal Avenue, London, SW3 4QE
FELL 1x Robinia Pseudoacacia in rear garden
ARB/23/05182
2023 Approved
4 St Leonard's Terrace, LONDON, SW3 4QA
Replacement of rear French doors and sash replacement of windows with slim lite double gl…
LB/23/04740
2023 Approved
4 St Leonard's Terrace, LONDON, SW3 4QA
Replacement of rear French doors and sash replacement of windows with slimline double gla…
PP/23/04739
2016 Approved
9 Cheltenham Terrace, LONDON, SW3 4RD
Construction of first floor flat roof extension to rear, alterations to rear downpipes an…
PP/16/05192
2016 Approved
9 Cheltenham Terrace, LONDON, SW3 4RD
Construction of new first floor flat roof extension to rear. Alterations to existing rear…
LB/16/05193
2016 Approved
9 Cheltenham Terrace, LONDON, SW3 4RD
Part demolition of single-storey lower ground floor rear extension and construction of si…
PP/16/02543
2016 Approved
9 Cheltenham Terrace, LONDON, SW3 4RD
Part demolition of single-storey lower ground floor rear extension and construction of si…
LB/16/02544
2016 Approved
17 Walpole Street, LONDON, SW3 4QP
Replacement of rear ground floor infill conservatory extension with new one
PP/16/01943
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

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

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

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.

Freehold owner: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.