Planning application
Cypress Tree House Dulwich Common London Southwark SE21 7EU
Works: Extension Loft or dormer Roofing Windows or glazing Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Variation of Condition 1 (approved plans) pursuant to planning permission ref: 25/AP/1310 dated 30.07.2025 for 'Construction of a single storey extension in the rear garden, installation of solar panels to the existing outrigger roof, new dormer windows to the rear and side roof light to the main roof, replacement of existing windows and door, alterations to some windows and doors, and replacement of the existing lean to shed roof.' Amendment sought: 1. Addition of a roof light to main roof flat roof 2. Repositioning of dormers
As published by the council, reference 26/AP/1418
Application record
- Reference
- 26/AP/1418
- Type
- S.73 Vary/Remove Conds/Minor Alterations
- Status
- Granted
- Decision
- Variation Minor Material Changes Granted
- Received
- 18 May 2026
- Validated
- 28 May 2026
- Decided
- 5 Aug 2026
- Ward
- Dulwich Village
- Parish
- Dulwich
- Decision by
- Delegated Panel - Simple
- Postcode
- SE21 7EU
Site history
Applications at this address on the Southwark register
This site has had 2 applications since 2022: 2 approved, 0 refused.
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22/AP/4067 Granted
Cypress Tree House Dulwich Common London Southwark SE21 7EU
5 DAY NOTIFICATION. s.154 Exemption Highways Act Group of mixed trees/shrubs (G1) - cut back and lift over a public highway. A conifer (T1), mimosa (T2), prunus (T3) and shrubs to reduce lateral spread by 1m from 3m to 1m and lift to 2.5m above pavement, pruning to suitable points and maintaining natural aesthetic. All are approx 4m in height other than the conifer which is 10m in height. Work undertaken as all trees/shrubs are growing too low over the pavement and will cause an issue if left unchecked. The trees will tolerate the pruning as specified above as the pruning is very minor.
Timeline
Dates from the published record
-
18 May 2026
Received by Southwark
-
28 May 2026
Validated
Checked as complete and ready for consideration.
-
25 Jul 2026
Added to PlanIndex
-
5 Aug 2026
Decision issued: Variation Minor Material Changes Granted
Who's behind it
Company information only, from the register and Companies House
Tom Dunn Architects Ltd Agent, an architecture practice registered in London
Active · incorporated 2020 · London
6 applications on PlanIndex · across 4 councils
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See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
28 documents on file for this application
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Open the documentsWhat this grant of permission means
Southwark granted permission on 5 August 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 amendment applications
An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.
Nearby applications
Within 500 metres
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Cypress Tree House Dulwich Common London Southwark SE21 7EU
5 DAY NOTIFICATION. s.154 Exemption Highways Act Group of mixed trees/shrubs (G1) - cut back and lift over a public highway. A conifer (T1), mimosa (T2), prunus (T3) and shrubs to reduce lateral spread by 1m from 3m to 1m and lift to 2.5m above pavement, pruning to suitable points and maintaining natural aesthetic. All are approx 4m in height other than the conifer which is 10m in height. Work undertaken as all trees/shrubs are growing too low over the pavement and will cause an issue if left unchecked. The trees will tolerate the pruning as specified above as the pruning is very minor.
Granted Trees 7 docs -
Parkside Dulwich Common London Southwark SE21 7EU
Construction of single storey rear and side extensions.
Granted Householder Extension 20 docsSmall domestic -
24 Frank Dixon Way London Southwark SE21 7ET
Details of condition 4 (Details of the materials to be used) required by planning permission 20/AP/2397 Demolition of existing single storey garage and first floor dormer to the front of the property and construction of a two storey side extension. Construction of a single storey rear extension with vertical timber privacy louvers and feature glazing to the side elevation, rooflights and terrace at first floor level with 1.8m privacy screen. Installation of an air source heat pump within the proposed side extension. Installation of solar panels to the south facing roof and associated alterations to the existing front, rear and side fenestrationZinc roof cladding - VM Zinc pigmento vert Reconstituted Stone Window Surrounds - Cranbourne Bath YellowFacing Brick - MatchIt sample ref 3131/1
Granted Conditions Extension Loft or dormer +2 7 docsSmall domestic -
24 Frank Dixon Way London Southwark SE21 7ET
Non material amendment to planning permission ref. 20/AP/2397 dated 04/01/2021 for Demolition of existing single storey garage and first floor dormer to the front of the property and construction of a two storey side extension. Construction of a single storey rear extension with vertical timber privacy louvers and feature glazing to the side elevation, rooflights and terrace at first floor level with 1.8m privacy screen. Installation of an air source heat pump within the proposed side extension. Installation of solar panels to the south facing roof and associated alterations to the existing front, rear and side fenestration. The amendment seeks the following: Changes to the approval description: Demolition of existing single storey garage and first floor dormer to the front of the property and construction of a two storey side extension. Construction of a single storey rear and side extension with vertical timber privacy louvers, rooflights and terrace at first floor level, with 1.8m privacy screen. Installation of solar panels to the north, south and east roof facing roof and associated alterations to the existing front, rear and side fenestration.
Decided Conditions Extension Loft or dormer +2 5 docsSmall domestic -
24 Frank Dixon Way London Southwark SE21 7ET
Details of Condition 3 Solar panels as required by planning permission 20AP2397 dated 4/1/2021 for Demolition of existing single storey garage and first floor dormer to the front of the property and construction of a two storey side extension.Construction of a single storey rear extension with vertical timber privacy louvers and feature glazing to the side elevation, rooflights and terrace at first floor level with 1.8m privacy screen. Installation of an air source heat pump within the proposed side extension. Installation of solar panels to the south facing roof and associated alterations to the existing front, rear and side fenestration
Granted Conditions Extension Loft or dormer +2 8 docsSmall domestic -
24 Frank Dixon Way London Southwark SE21 7ET
Variation of condition 1 (approved plans) pursuant to planning permisssion 20/AP/2397 (Demolition of existing single storey garage and first floor dormer to the front of the property and construction of a two storey side extension. Construction of a single storey rear extension with vertical timber privacy louvers and feature glazing to the side elevation, rooflights and terrace at first floor level with 1.8m privacy screen. Installation of an air source heat pump within the proposed side extension. Installation of solar panels to the south facing roof and associated alterations to the existing front, rear and side fenestration) to add and reconfigure the approval for the solar panels approved and minor adjustment, to the approved fenestration.
Granted Amendments Extension Loft or dormer +2 15 docsSmall domestic
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26/AP/2021 Granted
Unit 1A Vanguard Court Rear Of 36 To 38 Peckham Road London Southwark SE5 8QT
Variation of Conditions 1 (Approved plans) pursuant to planning permission 25/AP/2903 (Construction of a first-floor roof extension to provide 5 additional light industrial (Class E(g)(iii)) studio/workshop units, together with associated access via external staircase and a green roof area.) Amendment sought: To amend the approved roof covering material to standing seam metal roofing, addition of 8No. rooflights, and revision to the material of the approved external staircase.
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26/AP/0728 Granted
Townsend House Strathnairn Street London Southwark SE1 5BU
Variation of condition 6 of planning permission ref no. 22/AP/3683 ( Demolition of existing garages and construction of four storey and five storey buildings providing 18 residential apartments (two x 1-bedroom units, nine x 2-bedroom units, seven x 3-bedroom units) with associated estate-wide hard and soft landscaping, cycle parking and refuse storage and the replacement of the existing substation). To split Condition 6 (Arboricultural Method Statement) in two parts of 6a and 6b.
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26/AP/1775 Granted
52 Ulverscroft Road London Southwark SE22 9HG
Variation of Condition 4 (Plant Noise) pursuant to planning permission 24/AP/2818 (Construction of a single rear/side infill extension and a 1st floor extension to the outrigger. Loft conversion including roof ridge raise by 300mm, rear roof dormer and roof outrigger dormer. Installation of 2no. rooflights to the front roof slope. Replacement of all windows and external doors, PV panels to the front roof slope and rear outrigger roof and installation of air source heat pump in rear garden). Variation seeks to amend: To remove the requirement for plant sound output level to 10dB below background.
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26/AP/1610 Granted
170 Lynton Road London Southwark SE1 5RB
Variation of Condition 1 (approved plans) of planning permission 25/AP/3741 (Construction of ground floor side infill extension; 6 rooflights to pitched roof and facade alterations.) Amendment sought: To allow the party wall to be astride the boundary.
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26/AP/1602 Granted
48 Upland Road London Southwark SE22 0DA
Variation of Condition 1 (Approved Plans) of planning permission ref no. 25/AP/1776. Amendment sought: The addition of a side-facing window within the approved rear dormer roof extension. The window will be fitted with obscure glazing and will be fixed shut below 1.7 metres above finished floor level to safeguard neighbouring privacy.