12 Thurloe Square, London, SW7 2TA Data via plota.co.uk

LB/25/06065 - Listed Building Consent Approved
Extensions & alterationsListed buildings

Proposal

Single storey rear closet wing extension at upper second floor level and reinstatement of front stair balustrade. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
6 Oct 2025
✓
Approved
12 Mar 2026

Approved on 12 Mar 2026 · Last checked 23 Oct 2026

Documents

View the documents on the council's website ↗

Site constraints 11

Grade II listed: 6-12, Thurloe Square Sw7
List entry 1265587 · The pin is inside its outline · 26 more listed buildings within 150 m (4 Grade II*, 22 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 26 with distances
Historic England ↗
Thurloe/Smith's Charity 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 Named permitted development rights are withdrawn here.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 ↗
Also on the record
National infrastructure project 1086 m away: Thames Tideway Tunnel; Inside the Kensington and Chelsea built-up area; Public transport access: PTAL 6a (excellent), TfL 2023, for the 100 m square; Priority habitat 29 m away: Deciduous woodland; Designated open space 29 m away; Town centre 82 m away: Brompton Cross.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 3 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 2

Last sold for £3,240,000 in November 2015. Terraced house, freehold.

6 November 2015£3,240,000
18 February 2011£1,850,000Leasehold

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

Building

Floor area263 m² (2,831 sq ft)
Energy ratingD (58 out of 100), could reach B
PropertyMid-terrace house, 4 habitable rooms
Built1900 to 1929
HeatingBoiler and underfloor heating, electric
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in May 2024, 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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Important details

Council
Kensington and Chelsea
Application type
Listed Building Consent
Postcode
SW7 2TA
Received
6 Oct 2025
Validated
6 Oct 2025
Ward
Brompton and Hans Town
Case officer
Show
Target decision
1 Dec 2025
Decision
Granted
Decision date
12 Mar 2026
Applicant
Show

How this decision compares

Decided in 157 days from validation, 79 days slower than Kensington and Chelsea's median of 78 for extensions. Approved, as 95% of extensions here are.

35%decided within 8 weeks
95%approved
1,595decided in the last year

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

Consultation & key dates

Comments by
14 Nov 2025

Historical activity at this location

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

This property

Previous applications at this address

2025 Approved
Single storey rear closet wing extension at upper second floor level and reinstatement of…
PP/25/06064
2017 Withdrawn
Internal alterations. Plastering of party wall between 12 Thurloe Square and 33 South Ter…
LB/17/07893
2018 Refused
Installation of CCTV bullet camera on existing railings to first floor balcony on front e…
LB/18/06683
2018 Refused
Installation of CCTV bullet camera on existing railings to first floor balcony on front e…
PP/18/06682
2017 Approved
Brick cleaning to front main elevation.
LB/17/07131
2018 Withdrawn
Single storey basement extension below rear garden ***WITHDRAWN***
LB/18/02303
2018 Withdrawn
Single storey basement extension below rear garden ***WITHDRAWN***
PP/18/02302
2017 Refused
Extension of rear closet wing with one additional storey and removal of 1no. rear window.
LB/17/07109
2017 Withdrawn
Alterations to light well and vault to provide access to wine cellar at lower ground floo…
LB/17/07104
2017 Refused
Extension of rear closet wing with one additional storey and removal of 1no. rear window.
PP/17/07108
2017 Withdrawn
Alterations to light well and vault to provide access to wine cellar at lower ground floo…
PP/17/07103
2016 Approved
Details required by Condition 5 (Construction Traffic Management Plan) of planning permis…
CON/16/08568
2016 Withdrawn
Details required by condition 5 (Construction Traffic Management Plan) of planning permis…
CON/16/08025
2016 Approved
Details required by condition 5 (Construction Traffic Management Plan) of planning permis…
CON/16/06255
2016 Refused
Construction of lower ground and upper ground floor levels rear extension featuring a rea…
PP/16/04986
2016 Refused
Construction of lower ground and upper ground floor levels rear extension featuring a rea…
LB/16/04987
2016 Withdrawn
Variation of condition 5 (CTMP) of planning permission 12/03910 (Construction of single s…
PP/16/05266
2016 Approved
Installation and display of non-illuminated signage boards on north elevation of the prop…
CA/16/00379
Within ~100m

Nearby activity

2025 Approved
59 Pelham Street, London, SW7 2NJ
Construction of mansard roof extension.
PP/25/05192
2025 Approved
55 Pelham Street, London, SW7 2NJ
Mansard roof extension
PP/25/05162
2025 Approved
20 Thurloe Square, London, SW7 2SD
Provision of glazed timber door and side lights at second floor half-landing.
LB/25/05168
2025 Approved
20 Thurloe Square, London, SW7 2SD
Removal and replacement of trellis to rear garden wall and party wall; installation of ne…
PP/25/04853
2025 Approved
20 Thurloe Square, London, SW7 2SD
Removal and replacement of trellis to rear garden wall and party wall; installation of ne…
LB/25/04854
2025 Approved
20 Thurloe Square, London, SW7 2SD
Reinstatement of sunblinds to front elevation
LB/25/04515
2025 Approved
20 Thurloe Square, London, SW7 2SD
Reinstatement of sunblinds to front elevation
PP/25/04514
2025 Approved
59 Pelham Street, London, SW7 2NJ
Alterations to rear closet wing. Installation of glass and brick infill extension at rear.
PP/25/02197
2025 Approved
8 South Terrace, London, SW7 2TD
Replacement front door and frame and tiling to front steps (Retrospective application)
LB/25/01645
2024 Approved
20 Thurloe Square, London, SW7 2SD
Variation of Condition 2 (compliance with approved drawings) of planning permission PP/24…
PP/24/08205
2024 Approved
20 Thurloe Square, London, SW7 2SD
Variation of condition 2 (approved drawings) of listed building consent 24/03507 to allow…
LB/24/06031
2025 Approved
1 Alexander Place, LONDON, SW7 2SG
Prune 1 x Bay (rear)
ARB/25/00226
2024 Approved
40 Pelham Street, London, SW7 2NN
Verification Order required to confirm the description and numbering of the two separate…
SNN/24/08139
2024 Approved
59 Pelham Street, London, SW7 2NJ
Prune 1 x Sycamore (front)
ARB/24/08236
2024 Approved
11 Alexander Place, LONDON, SW7 2SG
Prune 2 x Pine and 1 x Oak (rear)
ARB/24/05662
2024 Approved
51-61 (odd) Pelham Street, LONDON, SW7 2NJ
Provision of a mansard roof to each house as part of a coordinated development, erection…
PP/24/03798
2024 Approved
3 South Terrace, LONDON, SW7 2TB
Construction of lower ground store and ground rear infill extension and external stair be…
PP/24/03856
2024 Approved
3 South Terrace, LONDON, SW7 2TB
Construction of lower ground store and ground rear infill extension and external stair be…
LB/24/03857
2024 Approved
21 Alexander Place, LONDON, SW7 2SG
Replacement of existing single-glazed windows on front elevation, with double-glazed wind…
PP/24/04073
2024 Approved
5 Alexander Place, LONDON, SW7 2SG
Prune 1 x Gleditzia (rear)
ARB/24/03107
2021 Approved
63-81 Pelham Street, London, SW7 2NL
Demolition of building to basement level and construction of part two storey, part ground…
PP/21/00471
2021 Approved
27 South Terrace, LONDON, SW7 2TB
Prune 1 x Tulip Tree (rear)
ARB/21/03646
2020 Approved
19 Thurloe Square, LONDON, SW7 2TE
Prune 1 x London Plane (rear)
ARB/20/05681
2020 Approved
14 Thurloe Square, LONDON, SW7 2TE
Replacement of first floor balcony and cast iron balustrade to front main elevation.
PP/20/01471
2020 Approved
14 Thurloe Square, LONDON, SW7 2TE
Replacement of first floor balcony and cast iron balustrade to front main elevation.
LB/20/01472
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.