15 Sydenham Hill London Southwark SE26 6SH Data via plota.co.uk

26/AP/2548 - Variation Pending
Admin / procedural

Proposal

Non-material amendment to planning permission (Construction of single storey rear extension with patio and steps, basement extension to provide indoor swimming pool with terrace atop, south side extension to provide internal staircase to basement and three dormer windows to rear roof slope, remodelling and extension of existing annexe to north side of house, alterations to existing ground floor fenestration, and installation of new front boundary treatment.) The amendment seeks to remove the approved basement extension and reconfigure the terrace above; remove the approved south side (staircase) extension; replace the approved two side-facing windows within the existing annexe with a single high level window; amend the description of development accordingly; and remove Condition 11 (Basement Impact Assessment), which is no longer required. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
26 Aug 2026
✓
Validated
9 Sept 2026
Decision
Expected by 6 Oct 2026

This application is under consideration - no decision has been issued yet. A decision is expected by 6 Oct 2026.

Documents 8

Plans & drawings 7

PDF 11014-2-302 REV B SITE PLAN AS PROPOSED Plan - Proposed · 26 Aug 2026 View ↗ PDF 11014-2-308 REV B FRONT & REAR ELEVATIONS AS PROPOSED Plan - Proposed · 26 Aug 2026 View ↗ PDF 11014-2-311 REV B SECTION 2 AS PROPOSED Plan - Proposed · 26 Aug 2026 View ↗ PDF 11014-2-310 REV C SECTION 1 AS PROPOSED Plan - Proposed · 26 Aug 2026 View ↗ PDF 11014-2-309 REV B SIDE ELEVATIONS AS PROPOSED Plan - Proposed · 26 Aug 2026 View ↗ PDF 11014-2-305 REV B FIRST FLOOR PLAN AS PROPOSED Plan - Proposed · 26 Aug 2026 View ↗ PDF 11014-2-304 REV A GROUND FLOOR PLAN AS PROPOSED Plan - Proposed · 26 Aug 2026 View ↗

Application forms 1

PDF APPLICATION FORM - WITHOUT PERSONAL DATA Application - Form (Without Personal data) · 26 Aug 2026 View ↗

All documents on the council site ↗

Associated applications 6

Site constraints 11

Tree preservation order: Fountain Drive Greenback, 11 and Hillside Fountain Drive SE19 1UP and Sydenham H
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: 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 ↗
Local nature reserve 74 m away: Sydenham Hill Wood and Fern Bank
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
2 listed buildings within 150 m; Conservation area 72 m away: Dulwich Wood; Registered park or garden 216 m away: Crystal Palace Park; Inside the Southwark built-up area; Metropolitan Open Land 47 m away; Priority habitat 49 m away: Deciduous woodland; Designated open space 49 m away.
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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Important details

Council
Southwark
Application type
Variation
Postcode
SE26 6SH
Received
26 Aug 2026
Validated
9 Sept 2026
Ward
Dulwich Wood
Parish
Dulwich
Case officer
Show
Target decision
6 Oct 2026
Applicant
Show
Agent
PLANSTUDIO ARCHITECTURE

Public comments

No public comments yet.

Last counted 9 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Statutory expiry
6 Oct 2026
Env. assessment
No

Historical activity at this location

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

This property

Previous applications at this address

2025
Single-storey rear extension, side staircase, extension to existing annexe, basement conv…
25/AP/3772
2023 Approved
Works to TPO trees:T1 - Cherry tree approximately 6m in height: Crown thin by 20% includi…
23/AP/1965
Within ~100m

Nearby activity

2025
15A Sydenham Hill London Southwark SE26 6SH
Alteration to existing front wall and railings and formation of a new domestic car parkin…
25/AP/3156
2025 Approved
Greenbank Fountain Drive London Southwark SE19 1UP
5 Day Notification: T1 Bay: Remove rotten stems to ground level. G1: Tree Group Mixed gro…
25/AP/1992
2024 Approved
17 Sydenham Hill London Southwark SE26 6SH
A mature and twin-stemmed Holly tree approximately 10m in height, situated in the front l…
24/AP/1259
2024 Approved
15A Sydenham Hill London Southwark SE26 6SH
T1. Oak. Crown thin by 25% including lifting low branches and the removal of epicormic gr…
24/AP/0428
2023 Approved
11 Fountain Drive London SE19 1UW
Details of condition 5 'Ground investigation and assessment report' pursuant of planning…
23/AP/1258
2022 Approved
15A Sydenham Hill London Southwark SE26 6SH
Sycamore (T1) positioned to the lower rear right hand boundary of the garden - remove. Re…
22/AP/0118
2021 Approved
Hyacinth House 13 Sydenham Hill London Southwark SE26 6SH
REVISED SPECIFICATION:G2 Yew - Cut back overhang to boundary line to clearG3 Yew - Cut ba…
21/AP/4514
2021 Refused
Stoney Hill House Rock Hill London Southwark SE26 6SW
T5 Oak of the MWA Arb Report Works - Remove (fell) to near ground level Reasons - Tree is…
21/AP/0976
2019 Approved
11 Fountain Drive London SE19 1UW
Redevelopment of the site and construction of a part 4, part 5-storey building with basem…
19/AP/1976
2020 Approved
Blyton House 23 Sydenham Hill London Southwark
T1 Oak-reduce back laterals building side by 1.5m leaving 9m.Due to getting near property…
20/AP/0765
2019 Approved
Greenbank Fountain Drive London SE19 1UP
T1: Oak Twin stem Oak, remove the dying top of the tree and reduced to a safe height. T2…
19/AP/1272
2019 Approved
Former Oak Rock Hill Pumping Station Chestnut Place London SE26 6RW
T1-Oak Reduce by up to 2m to clear street furnishings, crown lift to statutory heights. T…
19/AP/0291
2018 Refused
11 Fountain Drive London SE19 1UW
Demolition of existing house and construction of a part 4, part 5-storey building with ba…
18/AP/2183
2018 Approved
Greenbank Fountain Drive London SE19 1UP
Works to tennis court including excavation of surface cracks, installation of root barrie…
18/AP/0446
2016 Approved
1 Chestnut Place London SE26 6RW
Ash tree - Cut back all lateral limbs growing towards the rear of 1 and 2 Chestnut Place…
16/AP/3584
2016 Approved
13 Sydenham Hill London SE26 6SH
Details of Condition 7 - means of enclosure (including privacy screens for planning permi…
16/AP/2043
2016 Approved
13 Sydenham Hill London SE26 6SH
Details of Condition 6 materials for planning permission 15-AP-5032 Demolition of the exi…
16/AP/2040
2016 Approved
13 Sydenham Hill London SE26 6SH
Details of Condition 9 refuse storage for planning permissiion 15-AP-5032 Demolition of t…
16/AP/2046
2016 Approved
13 Sydenham Hill London SE26 6SH
Details of Condition 8 cycle storage for planning permission 15-AP-5032 Demolition of the…
16/AP/2045
2016 Withdrawn
13 SYDENHAM HILL, LONDON, SE26 6SH
Bat and bird boxes/bricks as required by condition 4 of planning permission 15/AP/5032 fo…
16/AP/2545
2016 Approved
13 Sydenham Hill London SE26 6SH
Details of Condition 5 hard and soft landscaping for planning permission 15-AP-5032 Demol…
16/AP/1987
2016 Approved
13 Sydenham Hill London SE26 6SH
Details of condition 4 Bird and bat nesting boxes details as required by planning permiss…
16/AP/2546
2016 Approved
13 Sydenham Hill London SE26 6SH
Details of condition 3 Arboricultural Method Statement as required by planning permission…
16/AP/1540
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