Planning application
15 Sydenham Hill London Southwark SE26 6SH
Works: Extension Loft or dormer Windows or glazing Small domestic
Read from the description, not a valuation. How we read the register
Relates to 25/AP/3772
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
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.'
As published by the council, reference 26/AP/2075
Application record
- Reference
- 26/AP/2075
- Type
- Approval of Details
- Status
- Granted
- Decision
- Granted As published: AOD - Granted
- Received
- 13 Jul 2026
- Validated
- 14 Jul 2026
- Decided
- 1 Sep 2026
- Ward
- Dulwich Wood
- Parish
- Dulwich
- Decision by
- Delegated - GOLD
- Postcode
- SE26 6SH
Site history
Applications at this address on the Southwark register
This site has had 10 applications since 2023: 8 approved, 0 refused.
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26/AP/2548 Decided
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; remove Condition 11 (Basement Impact Assessment); and amend the description of development accordingly, to read as: Construction of single storey rear extension with patio, steps and extended terrace, 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.
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26/AP/2227 Granted
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.'
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26/AP/2254 Granted
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.'
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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.'
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26/AP/2042 Granted
15 Sydenham Hill London Southwark SE26 6SH
Details of condition 3 (Demolition and Construction Environmental Management Plan (DCEMP)) as required by planning permission 25/AP/3772 (amended by 26/AP/2548) 'Construction of single storey rear extension with patio, steps and extended terrace, 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.'
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26/AP/2073 Granted
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.'
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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.'
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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.
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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
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13 Jul 2026
Received by Southwark
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14 Jul 2026
Validated
Checked as complete and ready for consideration.
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25 Jul 2026
Added to PlanIndex
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1 Sep 2026
Decision issued: AOD - Granted
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10 Sep 2026
Status changed to Granted
Previously Under consideration/assessment.
Related applications
Cases linked to this one on the register
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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
17 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
5 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.
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Open the documentsWhat this grant of permission means
Southwark granted permission on 1 September 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
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 0.3 miles
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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 Conditions Extension Loft or dormer +1 5 docsSmall domestic -
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.'
Granted Conditions Extension Loft or dormer +1 5 docsSmall domestic -
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 -
15A Sydenham Hill London Southwark SE26 6SH
Sycamore (T1) positioned to the lower rear right hand boundary of the garden - remove. Replace with 14-16cm Gleditsia triacanthos Sunburst.Oak (T2) - positioned reasonably close to the rear right hand side of the garden - lightly thin overcrowded areas by up to 20% including the removal of epicormic and dead wood.
Granted Trees 11 docs
Other condition discharge and variation applications
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26/AP/1686 Granted
Aylesbury Estate Land Bounded By Albany Road Portland Street Bagshot Street Alvey Street East Street And Dawes Street London SE17
Non-material amendment to planning permission ref: 14/AP/3844 dated 05.08.2015 (and variation of associated legal agreement) for the '...demolition of existing buildings and phased redevelopment to provide a mixed use development comprising a number of buildings ranging between 2 to 20 storeys in height (12.45m - 68.85m AOD) with capacity for up to 2,745 residential units (Class C3), up to 2,500sqm of employment use (Class B1); up to 500sqm of retail space (Class A1); 3,100 to 4,750sqm of community use; medical centre and early years facility (Class D1); in addition to up to 3,000sqm flexible retail use (Class A1/A3/A4) or workspace use (Class B1); new landscaping; parks, public realm; energy centre; gas pressure reduction station; up to 1,098 car parking spaces; cycle parking; landscaping and associated works.' Amendments sought: -Trigger points of Conditions 5 (Surface water stratgy), 7 (Drainage details), 10 (Site contamination), 12 (Advanced infrastructure and enabling works) amended to exclude demolition works. -Variation of associated S106 (Clause 7.1) to alter demolition sequencing (early demolition of 1-240 Wendover sought)
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26/AP/1633 Granted
49-53 Surrey Row London SE1
Deed of Variation to amend the Section 106 Agreement associated with planning permission ref: 98/AP/1754
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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.'
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26/AP/2658 Awaiting decision
Camberwell Police Station 9 Wren Road London Southwark SE5 8QP
Details of Condition 2 'Method Statement and Schedule of Works' required by listed building consent ref. 26/AP/1608 'Listed building consent for proposed internal and external alterations to facilitate the conversion of the former Camberwell Police Station to create a mixed-use building comprising of Class E or Sui Generis at ground and lower ground floors and short stay, bed and breakfast accommodation (Use Class C1) at first and second floors.'
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26/AP/2097 Decided
221 New Kent Road London Southwark SE1 4AD
Details submitted to satisfy Schedule 5, Part 2, Clauses 2.1 (Affordable Workspace Strategy) of the Section 106 Agreement associated with planning permission ref: 24/AP/2385 (as amended by 25/AP/1970) which gave consent for ' Variation of Condition 1 (Approved Plans) for planning permission ref no. 23/AP/1991 'Minor material amendment by variation of Conditions 1 (Approved Plans), 36 (Approved Building Height), 37 (Approved Quantum of Work/Maker Space) and 38 (Approved Number of Hotel Rooms) of planning permission 19/AP/5389, the development description for which was: "Demolition of existing warehouse building and erection of a part 3, part 6 and part 9 storey building providing 200 hotel rooms (Class C1) and 1,354sqm of work/maker space at ground floor (and mezzanine) (Flexible Class B1) as well as ancillary cafe/restaurant and bar facilities (Class A3/A4), along with associated landscaping, servicing yard and access works." The amendments sought by this application are: - Façade alterations - Alteration to accessible room sizes - Alterations to position of room sizes and layouts - Alterations to the plan across all levels - Alterations to the roof with relocation of biodiverse roof and provision of railings above the mezzanine for safe maintenance'