55C Darwin Street London Southwark SE17 1HA Data via plota.co.uk

26/AP/2279 - Minor application Refused
Extensions & alterations

Proposal

Alterations to the second floor rear elevation including the replacement of a pitched roof with a flat roof to facilitate the construction of a rear dormer extension and roof terrace. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
31 Jul 2026
✓
Validated
17 Aug 2026
✗
Refused
16 Oct 2026
Appeal
Not lodged

Refused on 16 Oct 2026 · Delegated Panel - Complex · Last checked 17 Oct 2026

Documents 18

Decision & officer reports 1

PDF 1027-KAA-XX-XX-DR-A-0000- BLOCK PLAN OF THE SITE Decision - Plans · 31 Jul 2026 View ↗

Statements & assessments 2

PDF DESIGN AND ACCESS STATEMENT Design and Access statement · 31 Jul 2026 View ↗ PDF FIRE STATEMENT Fire Statement · 31 Jul 2026 View ↗

Plans & drawings 8

PDF -1005 PROPOSED SECTION Plan - Proposed · 17 Aug 2026 View ↗ PDF -1004 PROPOSED SIDE ELEVATION Plan - Proposed · 17 Aug 2026 View ↗ PDF -1003 PROPOSED ELEVATIONS Plan - Proposed · 17 Aug 2026 View ↗ PDF -1002 PROPOSED ROOF Plan - Proposed · 17 Aug 2026 View ↗ PDF -1001 PROPOSED LOFT Plan - Proposed · 17 Aug 2026 View ↗ PDF 1000 PROPOSED SECOND FLOOR PLAN Plan - Proposed · 17 Aug 2026 View ↗ PDF 1027-KAA-XX-XX-DR-A-1000- PROPOSED SECOND FLOOR PLAN Plan - Proposed · 31 Jul 2026 View ↗ PDF 1027-KAA-XX-XX-DR-A-1004- PROPOSED ELEVATION (SIDE) - Plan - Proposed · 31 Jul 2026 View ↗

Application forms 2

PDF CIL FORM CIL - GIA Form · 17 Aug 2026 View ↗ PDF APPLICATION FORM - WITHOUT PERSONAL DATA Application - Form (Without Personal data) · 31 Jul 2026 View ↗

Consultation & comments 2

PDF OBJECTION Comment - Contributor · 12 Oct 2026 View ↗ PDF FILE COPY - NEIGHBOUR NOTIFICATION+LIST Neighbour Notification List · 19 Aug 2026 View ↗

Other documents 3

PDF PRESS NOTICE - 27/08/2026 Press Notice · 25 Aug 2026 View ↗ PDF SITE NOTICE Site notice · 18 Aug 2026 View ↗ PDF VALID APPLICATION LETTER WITH INVOICE Valid Application Letter · 18 Aug 2026 View ↗

All documents on the council site ↗

Site constraints 10

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 ↗
Yates Estate and Victory 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 ↗
Air quality management area: Southwark 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 681 m away: Thames Tideway Tunnel
The site is 681 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, 143 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 ↗
Opportunity area
Where the London Plan expects significant growth.
Boundaries are indicative and the borough holds the detailed plan.
Also on the record
Wider setting of protected view 23A.1 Centre of Bridge over the Serpentine to the Palace of Westminster; Radon affected area, class 2; Inside the Southwark built-up area; Public transport access: PTAL 5 (very good), TfL 2023, for the 100 m square; Designated open space 17 m away.
Not affected
Not green belt · No listed building at the site · No scheduled monument at the site

Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI), 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 £181,500 in July 2005. Flat or maisonette, leasehold.

13 July 2005£181,500
11 August 2000£120,000

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

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Important details

Council
Southwark
Application type
Minor application
Postcode
SE17 1HA
Received
31 Jul 2026
Validated
17 Aug 2026
Ward
North Walworth
Parish
Borough, Bankside And Walworth
Case officer
Show
Target decision
11 Oct 2026
Decision
Minor - REFUSED
Decision date
16 Oct 2026
Decision level
Delegated Panel - Complex
Applicant
Show
Agent
kristofer adelaide architecture

How this decision compares

Decided in 60 days from validation, 9 days slower than Southwark's median of 51 for extensions. Refused, as 7% of extensions here are.

75%decided within 8 weeks
93%approved
657decided in the last year

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

Public comments

4comments received
4 objecting

100% object · above the UK average of 74%

13 neighbours consulted · Last counted 17 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Statutory expiry
11 Oct 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
29 Searles Road London Southwark SE1 4YX
Rebuilding of a damaged garden boundary wall and the insertion of a new external door wit…
25/AP/2995
2025
2 Old Kent Road London Southwark SE1 4AZ
Works to a tree with a TPO: London plane T1 Crown reduce to previous points. Removal of t…
25/AP/2898
2024
2 Old Kent Road London Southwark SE1 4AZ
Part Single/ Part Two and a half- story extension, set back from the back of the neighbor…
24/AP/1269
2023 Approved
Flat 3 2 Darwin Street London Southwark SE17 1HB
Installation of a rear balcony to first floor flat.
23/AP/2582
2023 Approved
32 Searles Road London Southwark SE1 4YX
Construction of a mansard roof extension and installation of two roof lights to the front…
23/AP/1138
2021 Approved
Mardyke House Mardyke Estate Crosslet Street London Southwark
Installation of security metal railings at roof level of building and replacement of wind…
21/AP/0751
2020 Approved
26 Searles Road London Southwark SE1 4YU
Division of existing five bedroom house to two flats with construction of rear extension…
20/AP/3585
2020 Withdrawn
Former Public Conveniences At The Junction Of Old Kent Road And New Kent Road. London Southwark
Construction of a four storey residential block with a pitched roof whilst retaining the…
20/AP/1493
2020
Charlotte Court 68B Old Kent Road London Southwark
Upwards extension of the existing building to provide 9 new residential (C3) apartments a…
20/AP/1997
2019 Approved
145F Chatham Street London Southwark SE17 1PA
Construction of two rear dormer extensions and four rooflights in the front roof slope
19/AP/5458
2019 Refused
145F Chatham Street London SE17 1PA
Construction of two dormer roof extensions to the rear and front roofslopes
19/AP/1625
2018 Approved
61 Darwin Street London SE17 1EZ
Construction of a ground floor front extension, infilling the existing recessed porch are…
18/AP/2456
2018 Approved
61 Darwin Street London SE17 1EZ
Construction of a single-storey ground floor rear extension
18/AP/2455
2016 Approved
19B Mason Street London SE17 1HF
Erection of x2 rear gable-end dormer window extensions, to the main front roof slope; wit…
16/AP/3140
2016 Approved
37 Searles Road London SE1 4YX
Construction of a mansard extension incorporating front and rear dormer windows
16/AP/4574
2016 Withdrawn
19B Mason Street London SE17 1HF
Erection of front dormer roof extension, to the main roof slope; with the installation of…
16/AP/2153
2016 Approved
35 Searles Road London SE1 4YX
Erection of a mansard roof extension and a ground-floor, single-storey side/rear infill e…
16/AP/2049
2016 Approved
25B Mason Street London SE17 1HF
Installation of the front and rear roof lights
16/AP/2062
2023 Approved
2 Old Kent Road London Southwark SE1 4AZ
Removal of Condition 2 (Occupation to be ancillary and incidental to enjoyment of dwellin…
23/AP/0111
2022 Approved
Former Public Lavatories R/O 2 Darwin Street London SE17
Variation of Clause 2 and Clause 6 of Section 106 agreement attached to planning permissi…
22/AP/2448
2022
2 Old Kent Road London Southwark SE1 4AZ
Variation of a Section 106 Agreement: Submission of details pursuant to the requirements…
22/AP/2711
2021 Refused
2 Old Kent Road London Southwark SE1 4AZ
Discharge of a Planning Obligation dated 3/9/96, attached to planning application 95/AP/0…
21/AP/4654
2021 Refused
South-West Old Kent Road Bermondsey Spa London SE17 1HB
Prior approval notification for a proposed telecommunications installation: Proposed 20m…
21/AP/0502
2019 Refused
24 Mason Street London SE17 1HF
Construction of a Basement Studio flat and ancillary storage space, with a basement excav…
19/AP/0963
2016 Withdrawn
2 Old Kent Road London SE1 4AZ
Discharge of a Planning Obligation dated 3/9/96 that requires the property to be used anc…
16/AP/1020
Southwark
Planning Authority Score
7/10
Good
#64 of 296 councils
Relevant to this application:
Householder decisions

Southwark is faster than most councils at deciding householder applications, ranking #54 out of 296. Householder applications are slightly more likely to be approved here (95%) than the national average (90%).

Faster than most councils
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Southwark decision statistics
Based on MHCLG data, the year to March 2026
92%
Overall approval rate
Above avg (87%) #93 of 296
95%
Householder approved
Above avg (90%) #92 of 296
78%
Decided in 8 weeks
Above avg (63%) #54 of 296
37%
Extended time limit
Below avg (41%) #122 of 296
92%
Minor dwellings approved
259 decided (1-9 homes)
86%
Major dwellings approved
14 decided (10+ homes)
82%
Change of use approved
38 decided
1,622
Total decisions
132 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