10 Halsmere Road London SE5 9LN Data via plota.co.uk

25/02810/FUL - Full Planning Permission Approved

Proposal

Removal of the existing external staircase and erection of a three-storey rear extension to accommodate an internal stair and lift core. Alterations to the rear elevation, including changes to fenestration, removal of chimney stacks and lift overrun to roof. Repositioning of existing rear-facing windows at the top floor. Replacement of the existing front door and installation of an air source heat pump with an associated acoustic enclosure. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
5 Sept 2025
✓
Approved
29 Oct 2025

Approved on 29 Oct 2025 · Delegated Decision · Last checked 12 Oct 2026

Documents 14

Decision & officer reports 1

PDF OFFICER REPORT Delegated Register · 29 Oct 2025 View ↗

Statements & assessments 6

PDF NOISE IMPACT ASSESSMENT Supporting Docs · 5 Sept 2025 View ↗ PDF DAYLIGHT AND SUNLIGHT ASSESSMENT Supporting Docs · 5 Sept 2025 View ↗ PDF AIR QUALITY ASSESSMENT Supporting Docs · 5 Sept 2025 View ↗ PDF ARBORICULTURAL IMPACT ASSESSMENT Supporting Docs · 5 Sept 2025 View ↗ PDF DESIGN AND ACCESS STATEMENT Supporting Docs · 5 Sept 2025 View ↗ PDF DESIGN AND ACCESS STATEMENT Supporting Docs · 5 Sept 2025 View ↗

Plans & drawings 5

PDF DRAWING SHEET Supporting Docs · 5 Sept 2025 View ↗ PDF THE LOCATION PLAN Plans · 5 Sept 2025 View ↗ PDF EXISTING PLANS Plans · 5 Sept 2025 View ↗ PDF EXISTING SITE PLAN Plans · 5 Sept 2025 View ↗ PDF PROPOSED PLANS Plans · 5 Sept 2025 View ↗

Application forms 1

PDF APPLICATION FORM - WITHOUT PERSONAL DATA Application Form · 5 Sept 2025 View ↗

Other documents 1

PDF COVERING LETTER Supporting Docs · 5 Sept 2025 View ↗

All documents on the council site ↗

Associated applications 3

Site constraints 9

Minet Estate 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.
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 ↗
Air quality management area: Lambeth 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 ↗
Registered park or garden 56 m away: Myatt's Fields
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 ↗
National infrastructure project 966 m away: Thames Tideway Tunnel
The site is 966 m from the project boundary. Waste water treatment, decided. The project page says whether consent was granted.
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 ↗
1 listed building within 150 m
Nearest: Calais Gate, Grade II, 61 m away
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.
Historic England ↗
Also on the record
Wider setting of protected view 4A.2 Primrose Hill summit to the Palace of Westminster; Inside the Lambeth built-up area; Public transport access: PTAL 2 (poor), TfL 2023, for the 100 m square.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 12 October 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 £19,500,000 in September 2024. Other property, freehold.

11 September 2024£19,500,000Recorded as a transfer outside a standard sale

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

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Important details

Council
Lambeth
Application type
Full Planning Permission
Postcode
SE5 9LN
Received
5 Sept 2025
Validated
5 Sept 2025
Ward
Myatts Fields
Case officer
Show
Target decision
31 Oct 2025
Decision
Grant Permission
Decision date
29 Oct 2025
Decision level
Delegated Decision
Applicant
Show
Agent
Montagu Evans LLP
Freehold owner
Show

How this decision compares

Decided in 54 days from validation, about the council's usual 56 days. Approved, as 80% of full applications here are.

51%decided within 8 weeks
80%approved
1,283decided in the last year

Plota live figures for full applications decided by Lambeth in the last twelve months, from validation. Lambeth decision record →

Public comments

No public comments yet.

85 neighbours consulted · Last counted 12 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Comments by
10 Oct 2025
Statutory expiry
31 Oct 2025
Env. assessment
No

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
Erection of 2 storey rear extension to Block B, erection of single storey link between Bl…
25/03543/FUL
Within ~100m

Nearby activity

2025 Approved
11 Calais Street London Lambeth SE5 9LP
Erection of 2 rear roof dormer windows with the installation of two rooflights to the fro…
25/02440/FUL
2024 Approved
12 Calais Street London Lambeth SE5 9LP
Back Garden: ONE Cypress T1 Fell to Ground Level and TWO Monterey Cypress G1 Fell to Grou…
24/02204/TCA
2023 Refused
5 Calais Street London Lambeth SE5 9LP
Erection of tree platform in rear garden (Retrospective).
23/04137/FUL
2023 Refused
29 Halsmere Road London SE5 9JQ
Erection of a single storey ground floor rear extension.
23/01888/FUL
2023 Approved
12 Calais Street London Lambeth SE5 9LP
T1: x1 Plum. Suggested work - reduce lateral growth over the clients garden using poles a…
23/02242/TCA
2023 Withdrawn
9 Halsmere Road London Lambeth SE5 9LN
To remove 1 no. tree to front elevation of building.
23/00928/TCA
2022 Approved
10 Halsmere Road London Lambeth SE5 9LN
1 x Conifer tree (T1) - remove. 1 x Sycamore tree (T2) - prune back to previous reduction…
22/03879/TCA
2021 Approved
St Gabriel's College Langton Road London LONDON SW9 6UL
Erection of a fixed canopy for external dining.
21/04084/FUL
2021 Approved
12 Calais Street London SE5 9LP
Installation of a front and rear rooflights and a replacement rear rooflight.
21/01737/FUL
2021 Refused
8 Halsmere Road London SE5 9LN
Erection of rear mansard roof extension and 2no. dormer windows, single storey ground flo…
21/01709/FUL
2021 Approved
5 Calais Street London SE5 9LP
To remove 1 x Cypress tree to rear of property.
21/01273/TCA
2021 Approved
12 Calais Street London SE5 9LP
Removal of an existing rear extension for the installation of a sliding door unit and the…
21/00294/FUL
2021 Approved
8 Halsmere Road London SE5 9LN
Erection of single storey ground floor side infill extension, erection of two rear linked…
21/00016/FUL
2020 Approved
20 Halsmere Road London SE5 9LN
Erection of a single storey ground floor rear infill extension with three roof lights and…
20/04321/FUL
2020 Approved
10 Calais Street London SE5 9LP
Erection of a rear dormer extension and the installation of 1 front, 1 side and 1 rear ro…
20/01466/FUL
2019 Approved
6A Flodden Road London SE5 9LH
Conversion of the existing garage into a habitable room involving the removal of the gara…
19/03914/FUL
2019 Approved
16A Flodden Road London SE5 9LH
Replacement window on ground floor front elevation to facilitate the conversion of existi…
19/01235/FUL
2019 Withdrawn
9 FLODDEN ROAD, LONDON, SE5 9LH
T1 Lime - Has considerable wound/decay at base of stem. Reduce back to previous pollard p…
19/AP/0279
2018 Approved
26 Flodden Road London SE5 9LH
To remove 1 x Quince tree (T1) to rear of property, reduce height of tall shrub (S1) by u…
18/04580/TCA
2018 Approved
8 Halsmere Road London SE5 9LN
To remove 1 x False Acacia tree (T1) to rear of property.
18/04127/TCA
2016 Approved
St Gabriel's College Langton Road London SW9 6UL
Demolition of the existing school buildings and caretaker's house and replacement with a…
16/02324/FUL
2016 Approved
19 Halsmere Road London SE5 9LN
Loft conversion involving the erection of two rear dormers and installation of two front…
16/02157/FUL
2016 Refused
18 Halsmere Road London SE5 9LN
Erection of a single storey ground floor rear infill extension and the removal of the exi…
16/02158/FUL
2016 Approved
21 Calais Street London SE5 9LP
Erection of single storey side extension with 1 no. lantern roof light to replace existin…
16/01210/FUL
2016 Approved
6C Flodden Road SE5 9LH
Erection of a front extension and use of existing garage as a habitable room involving re…
16/OB/0003
Lambeth
Planning Authority Score
2.7/10
Poor
#242 of 296 councils
Relevant to this application:
Householder decisions

Lambeth ranks #164 out of 296 councils for householder decision speed. 47% of applications have the time limit extended, above the 41% national average. Lambeth is also one of the strictest councils - it refuses more householder applications than almost any other, with only 81% approved vs 90% nationally.

One of the strictest councils
only 81% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Lambeth decision statistics
Based on MHCLG data, the year to March 2026
78%
Overall approval rate
Below avg (87%) #274 of 296
81%
Householder approved
Below avg (90%) #273 of 296
62%
Decided in 8 weeks
Below avg (63%) #164 of 296
47%
Extended time limit
Above avg (41%) #209 of 296
46%
Minor dwellings approved
70 decided (1-9 homes)
100%
Major dwellings approved
9 decided (10+ homes)
42%
Change of use approved
53 decided
1,784
Total decisions
396 refused in the year to March 2026
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

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.