Planning application
15 Sydenham Hill London Southwark SE26 6SH
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.
-
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.'
-
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.'
-
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.'
-
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.'
-
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.'
-
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.'
-
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.
-
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.
Timeline
Dates from the published record
-
13 Jul 2026
Received by Southwark
-
14 Jul 2026
Validated
Checked as complete and ready for consideration.
-
25 Jul 2026
Added to PlanIndex
-
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.
Related applications
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.
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 recordDocuments
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 documentsWhat 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
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 docsSmall domestic -
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.
Granted Trees 6 docs -
15A Sydenham Hill London Southwark SE26 6SH
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 docsDomestic -
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.'
Granted Extension Loft or dormer +1Small domestic -
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.'
Granted Extension Loft or dormer +1Small domestic -
15 Sydenham Hill London Southwark SE26 6SH
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 +1Small domestic
Other condition discharge and variation applications
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.'
-
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).
-
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
-
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'.
-
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