123A 123B 123C And 121C Stamford Street London SE1 9NN Data via plota.co.uk

26/02735/FUL - Full Planning Permission Awaiting decision
Extensions & alterationsListed buildings

Proposal

Full Planning Permission for the reinstatement and retention of the original separate layouts of Flat 121C and Flat 123A, including internal alterations, reinstatement of the first-floor party wall, refurbishment and replacement of internal doors; retention of existing secondary glazing to windows; retention of existing air-conditioning units serving Flats 123C, 123B and 124B; installation of a new external air-conditioning unit to serve Flat 121C; and associated repair and refurbishment works. (listed building application has been received under ref; 26/02496/LB) Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
22 Sept 2026
✓
Validated
1 Oct 2026
Decision
Expected by 26 Nov 2026

Under consideration

No decision has been issued yet. Plota predicts a decision around 26 Nov 2026, from Lambeth's recent extensions.

Documents 8

Statements & assessments 2

PDF DESIGN AND ACCESS STATEMENT Design & Access Statement · 22 Sept 2026 View ↗ PDF HERITAGE STATEMENT Supporting Docs · 22 Sept 2026 View ↗

Plans & drawings 4

PDF PRE-EXISTING GROUND FLOOR, FIRST, SECOND AND THIRD FLOOR, ROOF PLANS AND FRONT , Plans · 22 Sept 2026 View ↗ PDF BLOCK PLAN Plans · 22 Sept 2026 View ↗ PDF EXISTING GROUND FLOOR, FIRST, SECOND AND THIRD FLOOR, ROOF PLANS AND FRONT ,REAR Plans · 22 Sept 2026 View ↗ PDF PROPOSED GROUND FLOOR, FIRST, SECOND AND THIRD FLOOR, ROOF PLANS AND FRONT ,REAR Plans · 22 Sept 2026 View ↗

Application forms 1

PDF APPLICATION FORM - REDACTED Application Form · 22 Sept 2026 View ↗

Other documents 1

PDF OS MAP OS Map · 22 Sept 2026 View ↗

All documents on the council site ↗

Associated applications 2

Site constraints 10

19 listed buildings within 150 m of the postcode pin
Nearest: 95-123, Stamford Street Se1, Grade II, the postcode pin is inside its outline · 17 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 19 with distances
Historic England ↗
Flood zone 3, rivers and sea
High chance: a 1 in 100 or greater annual chance from rivers, or 1 in 200 from the sea. Any development here needs a flood risk assessment. Defences are not counted.
The Environment Agency flood map for planning. Homes in zone 3 must also pass the sequential test. Surface water flooding is a separate map.
Flood map ↗
Waterloo 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.
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 ↗
National infrastructure project about 135 m away: Thames Tideway Tunnel
The site is about 135 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, about 169 m).
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 ↗
Central activities zone
The core of central London in the London Plan.
Offices, culture and the other strategic functions of the centre take priority over new housing here.
Opportunity area
Where the London Plan expects significant growth.
Boundaries are indicative and the borough holds the detailed plan.
Also on the record
Inside the Lambeth built-up area; Public transport access: PTAL 6b (excellent), TfL 2023, for the 100 m square; Town centre about 60 m away: Waterloo.
Not affected
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.

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Other new applications on this street

31 Aug 2026Pending

123A 123B 123C And 121C London SE1 9NN

Listed Building Consent and Full Planning Permission for the reinstatement and r...

26/02496/LB

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Important details

Council
Lambeth
Application type
Full Planning Permission
Postcode
SE1 9NN
Received
22 Sept 2026
Validated
1 Oct 2026
Ward
Waterloo & South Bank
Case officer
Show
Target decision
26 Nov 2026
Applicant
Show
Agent
Show

Decision outlook

Day 8 of the 56-day target. Lambeth usually decides extensions by day 56.

Day 848 days to the 56-day target
59%decided within 8 weeks
82%approved
833decided 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 6 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Statutory expiry
26 Nov 2026
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

2025 Approved
11B Theed Street London SE1 8ST
Rear garden. T1 Corkscrew Willow approx 7m. Crown reduce by up to 1.5m to previous points…
25/02926/TCA
2025 Approved
13 Aquinas Street London SE1 8AE
Replacement of rear French doors and 2x rear windows with timber replacements.
25/00759/LB
2024 Approved
13 Theed Street London Lambeth SE1 8ST
Removal of existing aluminium clad roofing and roof trusses, raising existing east and we…
24/03403/FUL
2024 Refused
97 Stamford Street London SE1 9NN
Application for Listed Building Consent for the replacement of all existing windows with…
24/03878/LB
2024 Refused
97 Stamford Street London SE1 9NN
Application for Full Planning Permission for the replacement of all existing windows with…
24/03877/FUL
2024 Approved
Adjacent To 108 Stamford Street London SE1 9NH
Installation of Electric Vehicle Charging Infrastructure comprising one charging point, t…
24/02863/FUL
2024 Approved
11B Theed Street London Lambeth SE1 8ST
Rear Garden: T1: Willow: Approximately 5.00m: Reduce lateral and sub lateral growth by ap…
24/01911/TCA
2024 Withdrawn
16 Aquinas Street London Lambeth SE1 8AE
Installation of through-floor lift. (Please note: The reference number for this Listed Bu…
24/01777/LB
2024 Withdrawn
16 Aquinas Street London Lambeth SE1 8AE
Installation of through-floor lift. (Please note: The reference number for this applicati…
24/01776/FUL
2023 Approved
Henry House Coin Street London SE1 8YE
T1: Snake Bark Maple: Deadwood. T2: Willow. Reduce back to previous points of reduction T…
23/03978/TCA
2023 Approved
95 Stamford Street London Lambeth SE1 9NN
1 x Sycamore tree (T1) - pollard to secondary growth points.
23/01376/TCA
2022 Approved
11A Theed Street London SE1 8ST
Erection of dormer roof extension to enclose existing rear roof terrace.
22/03950/FUL
2022 Approved
28 Aquinas Street London SE1 8AD
To remove 1 x Mimosa tree to rear of property.
22/01460/TCA
2022 Approved
12 Aquinas Street London SE1 8AE
Repairs to roof including the replacement of existing clay tiles to both elevations with…
22/00329/FUL
2021 Approved
99 Stamford Street London SE1 9NN
Replacement of 2 existing rear elevation timber dormer sash windows with like for like do…
21/04006/FUL
2021 Approved
99 Stamford Street London SE1 9NN
Replacement of 2 existing rear elevation timber dormer sash windows with like for like do…
21/04007/LB
2021 Approved
Henry House Coin Street London SE1 8YE
Installation of three gas riser pipes to front elevation and five gas riser pipes to rear…
21/02766/FUL
2020 Approved
Edward Henry House Cornwall Road London SE1 8YF
1 x Robinia tree (T1) - reduce 1m below old reduction points (4m), 1 x Bay tree (T2) - re…
20/04061/TCA
2020 Approved
109 Stamford Street London SE1 9NN
Renovation of internal communal hallway for; Electrical Regulations compliance, Fire Regu…
20/02417/LB
2020 Withdrawn
109 Stamford Street London SE1 9NN
Replacement of Black Street Door, Installation of Door entry system.
20/02416/FUL
2017 Approved
99 Stamford Street London SE1 9NN
To crown reduce 1 x Sycamore tree to rear of property by up to 3 metres and lift canopy t…
17/05352/TCA
2017 Refused
Outside 106 Stamford Street London SE1 9NH
Installation of Solar Powered Telephone Kiosk.
17/04797/G24
2016 Approved
16 Theed Street London SE1 8ST
Erection of glass balustrading to the rear and side elevations and part retrospective pla…
16/06140/FUL
2016 Approved
13 Theed Street London SE1 8ST
Removal of existing aluminium clad roofing and roof trusses, raising existing east and we…
16/04050/FUL
2016 Withdrawn
35 Cornwall Road London SE1 8TJ
Construction of a roof terrace at 2nd floor level with attendant doorway access and balus…
16/04884/FUL
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