25 Welmar Mews London Lambeth SW4 7DD Data via plota.co.uk

26/02570/FUL - Full Planning Permission Awaiting decision
Extensions & alterations

Proposal

Creation of a new ground-floor window to the south elevation and installation of new railing and gate. 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

This application is under consideration - no decision has been issued yet. Plota predicts a decision around 2 Nov 2026, from Lambeth's recent extensions.

Documents 10

Plans & drawings 8

PDF PROPOSED SOUTH ELEVATION Plans · 7 Sept 2026 View ↗ PDF EXISTING EAST ELEVATION & SECTIONS Plans · 7 Sept 2026 View ↗ PDF EXISTING SOUTH ELEVATION Plans · 7 Sept 2026 View ↗ PDF EXISTING FLOOR PLAN Plans · 7 Sept 2026 View ↗ PDF PROPOSED SECTION PLANS Plans · 7 Sept 2026 View ↗ PDF THE LOCATION PLAN OS Map · 7 Sept 2026 View ↗ PDF PROPOSED FLOOR PLAN Plans · 7 Sept 2026 View ↗ PDF EXISTING EAST ELEVATION & SECTION Plans · 7 Sept 2026 View ↗

Application forms 2

PDF APPLICATION FORM - WITHOUT PERSONAL DATA Application Form · 7 Sept 2026 View ↗ PDF COMMUNITY INFRASTRUCTURE LEVY - COMPLETED FORM Supporting Docs · 7 Sept 2026 View ↗

All documents on the council site ↗

Site constraints 3

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 ↗
Also on the record
Conservation area 59 m away: Clapham Park Road/Northbourne Road; Inside the Lambeth built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building at the site

Checked on 29 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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Important details

Council
Lambeth
Application type
Full Planning Permission
Postcode
SW4 7DD
Received
7 Sept 2026
Validated
7 Sept 2026
Ward
Clapham Common & Abbeville
Case officer
Show
Applicant
Show
Agent
Surface Planning

Decision outlook

Day 27 of the 56-day target. Lambeth usually decides extensions by day 56.

Day 2729 days to the 56-day target
59%decided within 8 weeks
82%approved
828decided in the last year

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

Public comments

No public comments yet.

Last counted 29 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Env. assessment
No

Historical activity at this location

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

Within ~100m

Nearby activity

2024 Refused
9 Park Hill London SW4 9NS
Mixed-use redevelopment comprising : Block A = Demolition of the building and erection of…
24/02771/FUL
2025 Approved
24 Northbourne Road London SW4 7DJ
Rear garden: G1 Weeping Willows (TWO): Crown reduction by approximately 3m to 4m to previ…
25/02908/TCA
2023 Approved
15A Welmar Mews London SW4 7DD
Erection of a roof extension and balcony at second floor level and alteration of main roo…
23/03304/FUL
2019 Approved
24 Northbourne Road London SW4 7DJ
T1 Weeping Willow (x1) - Reduce crown by 2-3m all around. Reason: Has become excessively…
19/03841/TCA
2024 Approved
Ash Lodge Northbourne Road London SW4 7DS
T1 Sycamore Crown Thin Removing selected branches in canopy to reduce current density by…
24/00603/TCA
2023 Approved
9 Park Hill London SW4 9NS
Erection of two cycle storage lockers, provision of first floor balconies to flat 29C and…
23/01934/FUL
2023 Approved
162 Clapham Park Road London Lambeth SW4 7DE
Display of hand painted murals to the side of the elevation.
23/02251/ADV
2023 Approved
14 Northbourne Road London Lambeth SW4 7DJ
1 x Cotoneaster tree (T1) - remove. 1 x Strawberry tree (T2) - remove. 1 x Liquidambar tr…
23/01319/TCA
2023 Approved
14 Northbourne Road London Lambeth SW4 7DJ
T1: x1 Ash tree. Located to the rear of the property. Suggested work - to crown reduce ba…
23/01784/TPO
2023 Approved
14 Northbourne Road London Lambeth SW4 7DJ
T1: x1 Ash tree. Located to the rear of the property. Suggested work - to crown reduce ba…
23/01784/TCA
2023 Approved
14 Northbourne Road London Lambeth SW4 7DJ
1 x Lime Tree (T1) - reduce overall height by 40%. 1 x Cotoneaster Lacteus (T2) - remove.
23/01195/TCA
2023 Approved
14 Northbourne Road London Lambeth SW4 7DJ
1 x Ash tree (T1) - remove.
23/01398/TCA
2023 Approved
14 Northbourne Road London Lambeth SW4 7DJ
To crown reduce 1 x Ash tree to rear of property back to previous reduction points.
23/00565/TCA
2022 Approved
14 Northbourne Road London Lambeth SW4 7DJ
Demolition of existing glazed addition, erection of a single storey lower ground floor re…
22/03483/FUL
2022 Approved
1 Welmar Mews London Lambeth SW4 7DD
Replacement of all existing windows, doors and rooflight to match existing. Erection of n…
22/03177/FUL
2022 Approved
17 Flat 1 Northbourne Road London Lambeth SW4 7DT
1 x Sycamore tree (T1) - remove basal growth and 2 no. low branches at approximately 1.5m…
22/03848/TCA
2022 Refused
9 Park Hill London SW4 9NS
Change of use of the office (Use Class E) at ground floor and first floor levels to Units…
22/01349/P3MA
2022 Approved
12 Northbourne Road London LONDON SW4 7DJ
1 x Field Maple tree (T1) - reduce crown by 10%, 1 x Winter Flowering Cherry tree (T2)…
22/00911/TCA
2021 Approved
49 Park Hill London SW4 9NS
Erection of two rear roof dormer extensions and installation of three front roof lights.
21/04796/FUL
2021 Approved
24 Northbourne Road London SW4 7DJ
T1 Magnolia grandiflora (x1) - Reduce height by 2m and width by 1-1.5m. Reason: General m…
21/04640/TPO
2016 Approved
6 Northbourne Road London SW4 7DJ
To crown reduce 3 x Sycamore trees to rear of property by 30% and thin crowns by 10%.
16/03281/TCA
2016 Refused
156 Clapham Park Road London SW4 7DE
Change of use from Use Class D1 (children centre) to Use Class flexible A1/A2/B1
16/02431/FUL
2016 Approved
24 Northbourne Road London SW4 7DJ
To remove 1 x Eucalyptus tree to rear of property (damaging boundary wall).
16/02272/TCA
2016 Approved
162 Clapham Park Road London SW4 7DE
Retrospective application for change of use to a Tattoo parlour (Sui Generis).
16/00464/FUL
2016 Approved
162 Clapham Park Road London SW4 7DE
Retrospective application for the display of non-illuminated fascia signage on front elev…
16/01393/ADV
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

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use