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Planning application

15 Sydenham Hill London Southwark SE26 6SH

Awaiting decision Southwark 26/AP/2042 Approval of Details

Works: Extension Loft or dormer Demolition Windows or glazing Small domestic

Read from the description, not a valuation. How we read the register

Relates to 25/AP/3772

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Details of condition 3 (Demolition and Construction Environmental Management Plan (DCEMP)) as required by planning permission 25/AP/3772 '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.'

As published by the council, reference 26/AP/2042

Application record

Reference
26/AP/2042
Type
Approval of Details
Status
Under consideration/assessment
Received
13 Jul 2026
Validated
14 Jul 2026
Ward
Dulwich Wood
Parish
Dulwich
Postcode
SE26 6SH

Site history

Applications at this address on the Southwark register

This site has had 10 applications since 2023: 4 approved, 0 refused.

  • 26/AP/2548 Awaiting decision

    15 Sydenham Hill London Southwark SE26 6SH

    Non-material amendment to planning permission 25/AP/3772 (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.

    Submitted 26 Aug 2026
  • 26/AP/2227 Decided

    15 Sydenham Hill London Southwark SE26 6SH

    Details of Condition 5 (Detailed drawings) as required by planning permission 25/AP/3772 '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.'

    Submitted 27 Jul 2026
  • 26/AP/2254 Decided

    15 Sydenham Hill London Southwark SE26 6SH

    Details of Condition 4 (Material samples) as required by planning permission 25/AP/3772 '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.'

    Submitted 27 Jul 2026
  • 26/AP/2074 Granted

    15 Sydenham Hill London Southwark SE26 6SH

    Details of condition 8 (Hedgehog accesses) as required by planning permission 25/AP/3772 '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.'

    Decided 1 Sep 2026
  • 26/AP/2075 Granted

    15 Sydenham Hill London Southwark SE26 6SH

    Details of condition 9a (Bee bricks and/or invertebrate hotels) as required by planning permission 25/AP/3772 '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.'

    Decided 1 Sep 2026
  • 26/AP/2073 Decided

    15 Sydenham Hill London Southwark SE26 6SH

    Details of condition 7a (Bat tubes, bricks or boxes) as required by planning permission 25/AP/3772 '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.'

    Submitted 13 Jul 2026
  • 26/AP/2044 Granted

    15 Sydenham Hill London Southwark SE26 6SH

    Details of condition 6a (Bird boxes) as required by planning permission 25/AP/3772 '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.'

    Decided 1 Sep 2026
  • 25/AP/3772 Awaiting decision

    15 Sydenham Hill London Southwark SE26 6SH

    Single-storey rear extension, side staircase, extension to existing annexe, basement conversion with extension, roof dormers and front boundary treatment.

    Submitted 22 Dec 2025 Householder
  • 23/AP/1965 Granted

    15 Sydenham Hill London Southwark SE26 6SH

    Works to TPO trees:T1 - Cherry tree approximately 6m in height: Crown thin by 20% including the removal of dead wood and necessary re-shaping. The height and basic shape would be retained. It is important to prune branches at convenient growth points rather than an all round reduction or pollarding which is not permitted.T2 - Camellia tree approximately 6m in height: Reduce in height to just below cill level of the front bedroom window and reshape as necessary.T3 - Almond tree approximately 6m in height: Crown thin by 20% including the removal of dead wood and necessary reshapingT4 - Oak tree approximately 16m in height: Crown thin by 20% including the removal of dead wood and necessary reshaping. The height and basic shape should be retained. It is important to prune branches at convenient growth points rather than an all round reduction or pollarding which is not permitted.T5 - Camellia tree approximately 5.5m in height: Reduce all round to a more formal shape including the removal of dead wood.T6 - Magnolia tree approximately 5-6m in height: Reshape to form a more balanced specimen including the removal of dead woodT7 - Two cherry trees approximately 7.5m in height: Lightly thin and reshape to provide more formal specimensT8 - Hornbeam group approximately 9m in height: The height to be reduced from under the Oak canopy and crown thinned by 20% including the removal of dead wood and necessary reshaping.T9 - Yew tree approximately 6m in height: Crown thin by 20% including the removal of dead wood and necessary reshaping. The height and basic shape should be retained.

    Decided 16 Aug 2023 Trees

Timeline

Dates from the published record

  1. 13 Jul 2026

    Received by Southwark

  2. 14 Jul 2026

    Validated

    Checked as complete and ready for consideration.

  3. 25 Jul 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 8 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

    Southwark took a median of 51 days over the applications it decided in the last year.

Cases linked to this one on the register

  • 25/AP/3772 Awaiting decision

    15 Sydenham Hill London Southwark SE26 6SH

    Single-storey rear extension, side staircase, extension to existing annexe, basement conversion with extension, roof dormers and front boundary treatment.

    Submitted 22 Dec 2025 Householder

Who's behind it

Company information only, from the register and Companies House

PLANSTUDIO ARCHITECTURE Agent, an architecture practice registered in London

Active · incorporated 2017 · London

14 applications on PlanIndex · across 4 councils · 100% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

Plans, drawings, consultee responses and the officer's report

4 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Trade members open them from here.

Open the documents

What happens while it is decided

This application is with Southwark for determination, against a statutory target of eight weeks. Over the last year Southwark decided condition discharge and variation applications in a median of 47 days. More in our guide to how long planning decisions take.

About condition discharge and variation applications

This application deals with conditions on an existing permission, supplying the details a condition requires or asking to vary or remove one, without reopening the permission itself. More in our guide to planning application types.

Nearby applications

Within 500 metres

  • 15 Sydenham Hill London Southwark SE26 6SH

    25/AP/3772 Submitted 22 Dec 2025 0m away

    95% historically approved · decision due ~17 Feb

    Single-storey rear extension, side staircase, extension to existing annexe, basement conversion with extension, roof dormers and front boundary treatment.

    Awaiting decision Householder Extension Loft or dormer 30 docs
    Small domestic
  • 15 Sydenham Hill London Southwark SE26 6SH

    23/AP/1965 Submitted 14 Jul 2023 1m away

    Works to TPO trees:T1 - Cherry tree approximately 6m in height: Crown thin by 20% including the removal of dead wood and necessary re-shaping. The height and basic shape would be retained. It is important to prune branches at convenient growth points rather than an all round reduction or pollarding which is not permitted.T2 - Camellia tree approximately 6m in height: Reduce in height to just below cill level of the front bedroom window and reshape as necessary.T3 - Almond tree approximately 6m in height: Crown thin by 20% including the removal of dead wood and necessary reshapingT4 - Oak tree approximately 16m in height: Crown thin by 20% including the removal of dead wood and necessary reshaping. The height and basic shape should be retained. It is important to prune branches at convenient growth points rather than an all round reduction or pollarding which is not permitted.T5 - Camellia tree approximately 5.5m in height: Reduce all round to a more formal shape including the removal of dead wood.T6 - Magnolia tree approximately 5-6m in height: Reshape to form a more balanced specimen including the removal of dead woodT7 - Two cherry trees approximately 7.5m in height: Lightly thin and reshape to provide more formal specimensT8 - Hornbeam group approximately 9m in height: The height to be reduced from under the Oak canopy and crown thinned by 20% including the removal of dead wood and necessary reshaping.T9 - Yew tree approximately 6m in height: Crown thin by 20% including the removal of dead wood and necessary reshaping. The height and basic shape should be retained.

    Granted Trees 6 docs
  • 15A Sydenham Hill London Southwark SE26 6SH

    25/AP/3156 Submitted 30 Oct 2025 23m away

    95% historically approved · decision due ~26 Dec

    Alteration to existing front wall and railings and formation of a new domestic car parking area, including the formation of a new crossover

    Awaiting decision Householder 5 docs
    Domestic
  • 15 Sydenham Hill London Southwark SE26 6SH

    26/AP/2074 Submitted 13 Jul 2026 55m away

    Details of condition 8 (Hedgehog accesses) as required by planning permission 25/AP/3772 '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.'

    Granted Extension Loft or dormer +1
    Small domestic
  • 15 Sydenham Hill London Southwark SE26 6SH

    26/AP/2075 Submitted 13 Jul 2026 55m away

    Details of condition 9a (Bee bricks and/or invertebrate hotels) as required by planning permission 25/AP/3772 '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.'

    Granted Extension Loft or dormer +1
    Small domestic
  • 15 Sydenham Hill London Southwark SE26 6SH

    26/AP/2073 Submitted 13 Jul 2026 55m away

    95% historically approved · decision due ~8 Sep

    Details of condition 7a (Bat tubes, bricks or boxes) as required by planning permission 25/AP/3772 '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.'

    Decided Extension Loft or dormer +1
    Small domestic

In Southwark

  • 26/AP/1592 Granted

    Aylesbury Estate Land Bounded By Albany Road Portland Street Bagshot Street Alvey Street East Street And Dawes Street London SE17

    Deed of variation to amend Schedule 3, paragraph 16 (Car Club Scheme) in relation to Plot 18 / Development Phase 2A of the section 106 agreement attached to planning permission ref. 14/AP/3844 date 05.08.2015 for 'Demolition of existing buildings and redevelopment to provide a mixed use development comprising a number of buildings ranging between 2 to 20 storeys in height (9.45m - 72.2m AOD), providing 830 residential dwellings (Class C3); flexible community use, early years facility (Class D1) or gym (Class D2); public and private open space; formation of new accesses and alterations to existing accesses; energy centre; gas pressure reduction station; associated car and cycle parking and associated works.'

    4 Jun 2026 Conditions
  • 26/AP/1296 Granted

    Castle Service Station 100-114 Walworth Road London Southwark SE17

    Variation of legal agreement ref. 02/AP/1290, to modify Clause 12 of the S106 Agreement (to widen occupation of the property outside of term time to enable non-student occupancy for a maximum of 13 weeks).

    6 May 2026 Conditions
  • 26/AP/1611 Granted

    Coburg House 63-67 Newington Causeway London Southwark SE1 6LS

    Partial discharge of of condition 10 (London Underground Infrastructure) ' Demolition phase only' required by planning permission ref no. 24/AP/3621

    5 Jun 2026 Conditions
  • 26/AP/2131 Granted

    22-24 Southwark Bridge Road London Southwark SE1 9HB

    Details of condition 7 (Noise Monitoring Report) as required by planning permission ref: 25/AP/3515 dated 18/05/2026 for 'Partial demolition of 22 and 24 Southwark Bridge Road and redevelopment of site comprising the erection of an 18 storey building to accommodate a hotel use with associated amenity spaces (Class C1) with flexible cultural use (Sui Generis) at ground floor level, associated cycle parking, landscaping, access and servicing, plant and equipment and all other associated works'.

    20 Jul 2026 Conditions
  • 26/AP/1984 Granted

    Surrey Quays Railway Station Lower Road London Southwark SE16 2UE

    Details of condition 7 'Delivery and servicing management plan' required by planning permission ref no. 23/AP/3557 (dated 4th April 2024) 'Variation of Condition 1 (Approved Plans) pursuant to planning permission 22/AP/1802 for 'Approval of Reserved Matters (pursuant to Outline planning permission 20/AP/3744) for the erection of a new canopy related to a future northern entrance to Surrey Quays Station fronting onto Deal Porters Way and the change of use of land adjacent to 181 Lower Road to operational railway land with the erection of a new single storey building containing back of house facilities to enable the development of step-free access and stairs to platform level (this application is to be read in conjunction with Prior Approval Application 23/AP/3594). The amendments include the following: Entrance canopy redesign, Back Of House layout changes, Back Of House external changes and Landscape amendments'. The wording of condition 7 was amended via s96a application (25/AP/2953) dated 10/11/2025

    8 Jul 2026 Conditions