17 Hillsleigh Road, London, W8 7LE Data via plota.co.uk

PP/26/05535 - Planning Permission Consultation
Extensions & alterations

Proposal

Erection of mansard roof extension over single-storey section of north-eastern wing, facing Campden Hill Gardens Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
12 Oct 2026
Decision
Expected by 7 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision between 14 Dec 2026 and 25 Jan 2027, from Kensington and Chelsea's recent extensions.

Comments are open until 13 Nov 2026

Comment on this application ↗

Documents

View the documents on the council's website ↗

Site constraints 11

Kensington 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 Named permitted development rights are withdrawn here.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.
Archaeological priority area: The APA covers the high-ground of the gravel spur and slopes of Campden Hill
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: 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 ↗
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
15 listed buildings within 150 m of the postcode pin
Nearest: Church of St George, Grade II, about 30 m from the postcode pin · 15 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 15 with distances
Historic England ↗
Also on the record
Registered park or garden about 204 m away: Holland Park; Inside the Kensington and Chelsea built-up area; Public transport access: PTAL 6a (excellent), TfL 2023, for the 100 m square; Designated open space about 46 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 17 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, 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 £21,500,000 in September 2016. Other property, freehold.

More than one property is recorded at this address: HM Land Registry does not always give the flat or unit.

22 September 2016£21,500,000Recorded as a transfer outside a standard sale
24 July 1997£4,250,000Semi-detached house

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

Building

Floor area617 m² (6,641 sq ft)
Energy ratingF (37 out of 100), could reach C
PropertyEnd-terrace house, 14 habitable rooms
BuiltBefore 1900
HeatingBoiler and radiators, mains gas, Boiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in May 2016, 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

14 Sept 2026Pending

10 Hillsleigh Road, London, W8 7LE

Details required by Condition 10 (submission of details - Prior to the first use...

CON/26/04939
9 Jun 2026Approved

Hill Lodge, 14 Hillsleigh Road, London, W8 7LE

Details required by Condition 4 (Submission of details) of Listed Building Conse...

CON/26/03040

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7 Holland Park Avenue, London, W11 3RH

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5 Lansdowne Crescent, London, W11 2NH

Details required by Condition 7 (Construction Traffic Management Plan) of planni...

CON/26/05510
13 Oct 2026Pending

Flat 3, 65 Holland Park, London, W11 3SJ

Internal alterations to flat on raised ground floor and boiler cupboard located ...

CL/26/05532
12 Oct 2026Pending

24 Campden Hill Square, London, W8 7JY

Variation of condition 2 (compliance with approved drawings) of planning permiss...

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Replacement of shop front fascia panel and internally illuminated advertisement ...

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12 Oct 2026Pending

59 Ladbroke Road, London, W11 3PD

Prune 1 x Gleditsia (rear)

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Important details

Council
Kensington and Chelsea
Application type
Planning Permission
Postcode
W8 7LE
Received
12 Oct 2026
Validated
12 Oct 2026
Ward
Campden
Target decision
7 Dec 2026
Applicant
Show

Decision outlook

Day 7 of the 56-day target. Kensington and Chelsea usually decides extensions by day 83.

Day 776 days to the predicted decision (day 83)
33%decided within 8 weeks
96%approved
1,426decided 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
13 Nov 2026

Historical activity at this location

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

This property

Previous applications at this address

2025 Approved
Prune 1 x Magnolia, 1 x Pittosporum, 1 x Pine (front)
ARB/25/06396
2024 Approved
Prune 1 x Magnolia (front), 1 x Pittosporum (front), 1 x Birch (rear)
ARB/24/06249
2021 Approved
Variation of Condition 2 of PP/20/02974 (Compliance with approved drawings of planning pe…
PP/21/04267
2021 Withdrawn
FELL x 1 pottosporum rear/side garden
ARB/21/02203
2020 Approved
Variation of Condition 2 (Compliance with approved drawings) of planning permission PP/17…
PP/20/02974
2019 Approved
Installation of air conditioning condensing unit with acoustic enclosure and anti-vibrati…
PP/19/05467
2019 Approved
Details required by condition 3 (Construction Traffic Management Plan (CTMP)) of planning…
CON/19/04570
2019 Refused
Variation of condition 10 wording (Sash windows and doors in painted timber) of planning…
PP/19/03754
2019 Approved
Prune 1 x magnolia
ARB/19/03959
2018 Approved
Details required by condition nos. 3 (CTMP) and 5 (professional management of engineering…
CON/18/06343
2017 Approved
Creation of basement extension, enlargement of summerhouse/garage, infill extension and a…
PP/17/06081
2016 Approved
FELL 3 x Silver Birch
ARB/16/02699
Within ~100m

Nearby activity

2025 Approved
23 Campden Hill Gardens, London, W8 7AX
FELL 1 x London Plane (rear)(actually a sycamore)
ARB/25/06726
2025 Approved
10 Hillsleigh Road, London, W8 7LE
Erection of single storey rear extension with terrace above and provision of single store…
PP/25/05160
2025 Approved
9 Hillsleigh Road, London, W8 7LE
Construction of second floor rear extension over part of existing roof terrace and insert…
PP/25/05159
2025 Approved
3 Campden Hill Place, London, W11 3RJ
Removal of fully glazed rear extension and replacement with single storey orangery; provi…
PP/25/05196
2025 Withdrawn
4 Campden Hill Place, London, W11 3RJ
Ground floor rear extensions with roof lanterns, and two-storey side extension to eastern…
PP/25/04688
2025 Approved
7 Campden Hill Square, London, W8 7LB
Alterations to doors to ground floor rear extension and flat roof above to replace roofli…
LB/25/03849
2025 Approved
7 Campden Hill Square, London, W8 7LB
Prune 1 x Malus and 1 x Rowan (rear)
ARB/25/04663
2025 Approved
9 Campden Hill Square, London, W8 7LB
Relocation of the ASHP from front vaults to roof
LB/25/03466
2025 Approved
9 Campden Hill Square, London, W8 7LB
Relocation of the ASHP from front vaults to roof
PP/25/03465
2024 Approved
7 Hillsleigh Road, London, W8 7LE
Partial demolition and redevelopment to provide replacement dwellinghouse behind retained…
PP/24/08548
2025 Approved
152 Campden Hill Road, London, W8 7AS
Replacement of front wall and railings, and works to improve an area of hardstanding at f…
PP/25/02812
2025 Approved
10 Hillsleigh Road, London, W8 7LE
Single storey rear extension to a terraced dwelling to cover the entirety of an enclosed…
PP/25/02808
2024 Approved
Ground/first Floor Flat, 156 Campden Hill Road, London, W8 7AS
Removal of three existing air conditioning units at roof level, proposed installation of…
PP/24/07269
2025 Approved
Hillsleigh House, 16 Hillsleigh Road, London, W8 7LE
Prune 1 x Lime (front)
ARB/25/02657
2025 Approved
148 Campden Hill Road, London, W8 7AS
FELL 1 x Magnolia (Rear Garden)
ARB/25/02183
2025 Approved
3 Campden Hill Place, London, W11 3RJ
Removal of fully glazed extension to the rear and replacement with a single storey orange…
PP/25/01871
2025 Approved
11 Hillsleigh Road, London, W8 7LE
Rear infill extension at ground floor level to accommodate internal alterations; replacem…
PP/25/01396
2025 Withdrawn
9 Campden Hill Square, London, W8 7LB
Relocation of ASHP from front vaults to roof
LB/25/01034
2025 Withdrawn
9 Campden Hill Square, London, W8 7LB
Relocation of ASHP from front vaults to roof
PP/25/01033
2025 Approved
3 Campden Hill Place, LONDON, W11 3RJ
Prune 2 x Lime (rear)
ARB/25/00653
2017 Withdrawn
156 Campden Hill Road, LONDON, W8 7AS
Construction of rear extension, addition of rooflights and replacement sash windows on fr…
PP/17/07276
2017 Refused
2 Campden Hill Place, LONDON, W11 3RJ
Demolition and rebuilding of 5.8m long portion of garden wall
PP/17/06443
2017 Approved
8 Aubrey Walk, LONDON, W8 7JG
Excavation of basement storey below footprint of existing dwelling extending partially be…
PP/17/06556
2017 Refused
3 Campden Hill Square, LONDON, W8 7LB
Retain sections of boarded fence to party boundaries at front and replace sections of fen…
PP/17/02810
2017 Approved
16 Hillsleigh Road, LONDON, W8 7LE
Prune 1 x European Lime (front garden)
ARB/17/06297
Kensington and Chelsea
Planning Authority Score
5.1/10
Average
#144 of 296 councils
Relevant to this application:
Householder 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.

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.