3 Chesham Street, London, SW1X 8ND Data via plota.co.uk

Consultation PP/26/04529
Extensions & alterations
Council
Kensington and Chelsea 5.1/10
Date received
26 Aug 2026
Date validated
26 Aug 2026
Postcode
SW1X 8ND

Description

Alterations and improvements to existing property including replacement of front windows from uPVC to painted timber sash, removal of water tank and flue at roof level and extension to width of existing roof extension, alterations to rear elevation including removal of existing external staircase, provision extensions at first and second floor level and restoring existing brickwork through tinting existing bricks. Data via plota.co.uk

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Last checked

Decision outlook

Plota predicts a decision between 31 Oct 2026 and 18 Dec 2026, from Kensington and Chelsea's recent extensions.

Day 19 of the 56-day target. Kensington and Chelsea usually decides extensions by day 90.

Day 1971 days to the predicted decision (day 90)
32%decided within 8 weeks
96%approved
1,220decided 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 →

Site constraints 5

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 ↗
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 Named permitted development rights are withdrawn here.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
Inside the Kensington and Chelsea built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 11 September 2026. Historic England, the Environment Agency, Natural England 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.

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Historical activity at this location

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

Within ~100m

Nearby activity

2025
52 Cadogan Place & 54 Cadogan Lane, London, SW1X
Proposed demolition and replacement with extensions at No.54 Cadogan Lane. New lower grou…
PP/26/00076
2025 Approved
Chalfont House, 19-21 Chesham Street, London, SW1X 8NG
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2025 Approved
75 Eaton Place London SW1X 8DR
Amalgamation of nos.75 and 77 Eaton Place by creating a doorway at lower-ground floor lev…
25/06138/LBC
2025 Approved
Flat 3, Pembroke House, 7-9 Chesham Street, London, SW1X 8NE
Installation of A/C unit with acoustic enclosure on existing recessed rear balcony at fir…
PP/25/02705
2025
8 Chesham Street London SW1X 8DT
Demolition of existing lightwell stairs and repositioning of the the new stone steps on a…
25/03774/LBC
2025
8 Chesham Street London SW1X 8DT
Demolition of existing lightwell stairs and repositioning of the new stone steps on adjac…
25/03773/FULL
2025 Withdrawn
38 Cadogan Place, London, SW1X 9RX
Addition of sub-basement below rear extension; new stair from existing basement to new lo…
LB/25/00808
2025 Withdrawn
38 Cadogan Place, London, SW1X 9RX
Addition of sub-basement below rear extension; new stair from existing basement to new lo…
PP/25/00807
2025 Approved
55 Cadogan Lane, London, SW1X 9DT
Partial reconstruction of single-storey rear extension, including installation of sliding…
PP/25/02240
2025 Approved
4 Lyall Street London SW1X 8DW
Installation of passenger lift from lower ground to fifth floor level with raised platfor…
25/01989/LBC
2025 Approved
9 Pont Street, London, SW1X 9EJ
Variation of condition 6 (tables and chairs - limited period) of planning permission 22/0…
PP/25/01136
2025 Approved
Chalfont House, 19-21 Chesham Street, London SW1X 8NG
Prune 1 x Cherry (Prunus spp)(T1) in rear garden.
ARB/25/01008
2025
20 Chesham Place, London, SW1X 8HQ
Informal notification under Schedule 2, part 13, Class A of the Town and Country Planning…
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2024 Approved
7-9 Pont Street, London, SW1X 9EJ
Prune 1 x Japanese Cherry 'Kanzan' (front)
ARB/24/08003
2024 Approved
Flat 13 and 14, Chalfont House, 19-21 Chesham Street, London, SW1X 8NG
Replacement of single glazed Crittall windows with double glazed Crittall windows
PP/24/07351
2024 Approved
Flat 11, Chalfont House, 19-21 Chesham Street, LONDON, SW1X 8NG
Replacement single glazed Crittall windows with double glazed Crittall windows
PP/24/07169
2024
75 Eaton Place London SW1X 8DR
Internal alterations to partitions including amendments to the layout of spaces within th…
24/08438/LBC
2024 Approved
Flat 29, Chalfont House, 19-21 Chesham Street, LONDON, SW1X 8NG
Replacement of 3 windows within light well, with 3 double glazed Crittal style windows
PP/24/05273
2024 Approved
Flat 34 and 35, Chalfont House, 19-21 Chesham Street, LONDON, SW1X 8NG
Replacement of existing single glazed crittall windows with double glazed aluminium to ma…
PP/24/03318
2024 Approved
3 Chesham Close London SW1X 8DN
Erection of roof extension and external alterations.
24/03227/FULL
2018
Communication Station for Cell 98182, EE Ltd Site, 20 Chesham Place, LONDON, SW1X 8HQ
Removal of 3x antennas, to be replaced with 3x upgraded antennas, alongside ancillary equ…
NOT/18/00673
2017 Approved
Chesham House 30-31 Chesham Place London SW1X 8DL
Reinstatement of entrance doors and double portico to Chesham Place elevation.
17/06999/FULL
2017 Approved
Chesham House 30-31 Chesham Place London SW1X 8DL
Reinstatement of entrance doors and double portico to Chesham Place elevation. Internal a…
17/07000/LBC
2017 Withdrawn
Flat 21, Chalfont House, 19-21 Chesham Street, LONDON, SW1X 8NG
Construction of a two storey structure at ground floor and first floor levels to rear of…
PP/17/07112
2017 Approved
Flat 4, 17 Chesham Street, LONDON, SW1X 8ND
Replacement of one double-glazed, painted timber frame sash window to rear facade (at thi…
PP/17/05275
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