123 Sloane Street, London, SW1X 9BW Data via plota.co.uk

LB/26/04821 - Listed Building Consent Consultation
Extensions & alterations

Proposal

Internal alterations at third floor, comprising removal of existing suspended plasterboard ceiling and supporting secondary timber joists to expose existing attic space, installation of breathable thermal insulation to underside of roof, and installation of new internal lining to create double-height space. 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 between 9 Nov 2026 and 21 Dec 2026, from Kensington and Chelsea's recent extensions.

The consultation period closed on 2 Oct 2026.

Documents

View the documents on the council's website ↗

Site constraints 12

18 listed buildings within 150 m of the postcode pin
Nearest: 123, Sloane Street Sw1, Grade II, the postcode pin is inside its outline · 1 Grade I, 1 Grade II*, 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 18 with distances
Historic England ↗
Hans Town 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 ↗
2 Article 4 directions
Article 4 - No 100 · Article 4 - No 106. Named permitted development rights are withdrawn here.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.
In flood zones plus climate change
Inside the extent flood zones 2 and 3 could reach with climate change: the Central allowance for the 2080s on rivers, the Upper End allowance for sea level rise to 2125. From the sea. Defences are not counted.
The Environment Agency flood map for planning. Councils use it to decide when a flood risk assessment and the sequential test are needed. It is indicative and does not show whether a particular property will flood.
Flood map ↗
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 522 m away: Thames Tideway Tunnel
The site is about 522 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, the site is inside its boundary).
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 49 m away: Cadogan Place
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 6a (excellent), TfL 2023, for the 100 m square; Town centre about 21 m away: King's Road (east); Designated open space about 49 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 area347 m² (3,735 sq ft)
Energy ratingD (asset rating 97)
UseB1 Offices and Workshop businesses
HeatingAir Conditioning

From the energy performance certificate lodged in September 2020, 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

30 Apr 2026Approved

120 Sloane Street, London, SW1X 9BW

External alterations for use of a flat roof as a roof terrace, including install...

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23 Oct 2026Pending

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20 Oct 2026Pending

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Alterations to hotel entrance on Sloane Street, including replacement of entranc...

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19 Oct 2026Pending

The Terrace Flat, 8 Sloane Street, London, SW1X 9LE

Addition of rear extension, previously granted in August 2006 and in January 202...

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Details required by condition 3 (CTMP) of planning permission PP/26/03028 (Varia...

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22 Oct 2026Pending

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Details of the raised boundary wall and sample panel pursuant to condition 4 of ...

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21 Oct 2026Pending

33 Clabon Mews, London, SW1X 0EQ

Details required by conditions 3a (small scale ground gass and vapour protection...

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29 Cadogan Square, London, SW1X 0HU

Further to Fire Door Survey, upgrade to internal doors, frames and vault doors i...

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Replacement of the approved second-floor rear sash window with painted timber Fr...

26/07131/LBC
21 Oct 2026Pending

Flat D, 44 Pont Street, London, SW1X 0AD

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Important details

Council
Kensington and Chelsea
Application type
Listed Building Consent
Postcode
SW1X 9BW
Received
7 Sept 2026
Validated
7 Sept 2026
Ward
Royal Hospital
Case officer
Show
Target decision
2 Nov 2026
Applicant
Show
Freehold owner
Show

Decision outlook

Day 51 of the 56-day target. Kensington and Chelsea usually decides extensions by day 83.

Day 5132 days to the predicted decision (day 83)
33%decided within 8 weeks
95%approved
1,441decided 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
2 Oct 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
1 Cadogan Gardens, London, SW3 2RJ
Variation of condition 2 of listed building consent [Address] is a Grade II listed terrac…
LB/25/06598
2025 Withdrawn
150 Pavilion Road, London, SW1X 0AX
New AC condenser unit to roof including acoustic enclosure and housing for basement pool…
PP/25/04672
2025 Approved
164 Pavilion Road, London, SW1X 0AW
Replacement of non-illuminated projecting sign with 1 x externally illuminated projecting…
CA/25/05816
2025
241A Pavilion Road, London, SW1X 0BP
Variation of condition 2 (compliance with approved drawings) of planning permission 25/05…
PP/25/06657
2025 Approved
Flat 14, 9 Wilbraham Place, London, SW1X 9AE
Minor alterations to plan form, addition of jib door in between smaller rear bedrooms, re…
LB/25/05717
2025 Approved
241A Pavilion Road, London, SW1X 0BP
Variation of conditions 4 (hours of operation), 5 (illumination) and 6 (outdoor seating)…
PP/25/05197
2025 Approved
160 Sloane Street, London, SW1X 9BT
Installation of new shopfront non-illuminated fascia signage comprising central brand log…
CA/25/04848
2025 Approved
160 Sloane Street, London, SW1X 9BT
Replacement of existing entrance doors, redecoration of shopfront and installation of new…
PP/25/04847
2025 Approved
127-129 & 133-135 Sloane Street, London, SW1X
Refurbishment and installation of shopfronts at ground floor level, installation of retra…
PP/25/04818
2025 Approved
1 Cadogan Gardens, London, SW3 2RJ
Strip out of modern internal finishes and services within the existing building and other…
LB/25/03340
2025 Approved
241A Pavilion Road, London, SW1X 0BP
Change of use of lower ground and basement level from Use Class E(a) (formerly A1 (Retail…
PP/25/02444
2025 Approved
158-162 Pavilion Road, London, SW1X 0AW
Verification Order required to confirm the description and numbering of the residential a…
SNN/25/04123
2025 Withdrawn
Flat E, 55 Cadogan Square, London, SW1X 0HY
Proposed refurbishment of windows and replacement of two modern casement windows at rear…
LB/25/02463
2025 Withdrawn
Flat E, 55 Cadogan Square, London, SW1X 0HY
Proposed refurbishment of windows and replacement of two modern casement windows at rear…
PP/25/02462
2025 Approved
243 Pavilion Road, London, SW1X 0BP
Change of use of the lower ground, ground and first floor levels of 243 Pavilion Road fro…
PP/25/02677
2024 Approved
Royal Court House, 162 Sloane Street, London, SW1X 9BS
Internal redecoration to common spaces, including entrance lobby and corridors
LB/24/08246
2025 Approved
Flat 5, 7 Wilbraham Place, London, SW1X 9AE
Works at 2nd floor including creation of opening onto terrace, with installation of Frenc…
PP/25/02120
2025 Approved
162B Sloane Street, London, SW1X 9BS
Installation of new internally illuminated fascia signage, window lettering and awnings
CA/25/01822
2025 Approved
162B Sloane Street, London, SW1X 9BS
Change of use from restaurant (Use Class A3) to retail (Use Class E) including internal r…
PP/25/01821
2025 Approved
Third Floor Flat, 105 Cadogan Gardens, London, SW3 2RF
Installation of 2no air conditioning units within acoustic enclosure on roof safety raili…
PP/25/00356
2020 Approved
Fourth and Fifth Floor Flat, 53 Cadogan Square, LONDON, SW1X 0HY
Replacement of 3no. sash windows on front elevation and 2no. sash windows on rear elevati…
PP/20/05616
2020 Approved
Fourth and Fifth Floor Flat, 53 Cadogan Square, LONDON, SW1X 0HY
Replacement of 3no. sash windows on front elevation and 2no. sash windows on rear elevati…
LB/20/05617
2020 Approved
59 Cadogan Square, LONDON, SW1X 0HZ
Replacement of part of external downpipe to flank elevation with 100mm UPVC and installat…
CL/20/04202
2020 Approved
127-128 Sloane Street, LONDON, SW1X 9AS
Change of use of the ground, lower ground and basement floor from retail to restaurant an…
PP/20/04187
2020 Approved
George House, 134 Sloane Street, LONDON, SW1X 9AX
Installation of 1 non-illuminated white acrylic pinned fascia sign: white vinyl lettering…
CA/20/04170
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.

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.