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15 Dukesthorpe Road, London, SE26 4PB

DC/25/142204Householder ApplicationApproved
Householder

Approved on 1 April 2026

Council decision: GrantedDelegated (officer decision)2 conditions

Approximate site (title boundary)
Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

Construction of rear dormer, installation of new rear elevation window, installation of 1 front rooflight and internal alterations at 15 Dukesthorpe Road, SE26.

Received
21 November 2025
Decision level
Delegated (officer decision)
Public comments
1
Ward
Sydenham
Agent
Red Squirrel Architects Ltd
  1. Received21 Nov
  2. Validated21 Nov
  3. Consult.16 Jan
  4. Target16 Jan
  5. Decided1 Apr

Decided in 131 days (council typically 56)

About this application

This is a full planning application for a dormer extension at 15 DUKESTHORPE ROAD, LONDON, SE26 4PB. Lewisham has handled 2,816 applications of this type. This one was decided in 131 days, 11 weeks longer than Lewisham's typical decision time. The site is in the Sydenham Thorpes conservation area. There are no previous applications recorded at this address. In the past year there have been 112 applications across Sydenham. We hold 2,166 applications in total for the SE26 postcode area.

85% of full applications at London Borough of Lewisham were approved. Across all application types, the council typically decides in about 8 weeks (median).

Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street

Application details

Postcode
SE26 4PB
Application type
Householder Application
Scale / size
Small
Parish
Does NOT need to go to BCAP

Planning application dates

Date validated
21 November 2025
Neighbour consultation start
30 December 2025
Last date for comments
16 January 2026
Target decision date
16 January 2026

Applicant and agent

Agent
Red Squirrel Architects Ltd
Architect profile
RED SQUIRREL ARCHITECTS LTD
Agent address
45 Marler Road, Forest Hill, London, SE23 2AE

Planning decision

Statutory period
56 days

Additional information

Planning Portal ID
PP-14443511
Documents
13
Constraints
5

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Sydenham Thorpes
  • Article 4 direction: Small HMO Northern Extension+1 more
  • Flood zone 1: Low probability (rivers and sea)

Possibly incomplete for this council: tree preservation orders.

Also checked, none recorded (21)

flood storage areas, listed buildings, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Source: Lewisham

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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