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15 Thriffwood, Silverdale, London, SE26 4SH

DC/26/142688Lawful Development Certificate proposedApproved
Outline / PiP

Approved on 10 March 2026

Council decision: GrantedDelegated (officer decision)

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

Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) Classes B and C of Schedule 2, Part 1 and Part 14, Class A of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for construction of a rear dormer with three front-slope rooflights and solar panels to 15 Thriffwood, Silverdale, SE26 4SH.

Received
16 January 2026
Decision level
Delegated (officer decision)
Ward
Perry Vale
Agent
DISTRICT Architects
  1. Received16 Jan
  2. Validated16 Jan
  3. Consult.13 Mar
  4. Target13 Mar
  5. Decided10 Mar

Decided in 53 days (council typically 56)

About this application

This is an outline application for a dormer extension at 15 THRIFFWOOD, SILVERDALE, LONDON, SE26 4SH. Lewisham has handled 1,023 applications of this type. This one was decided in 53 days, 3 days quicker than Lewisham's typical decision time. There has been 1 other application at this address. In the past year there have been 116 applications across Perry Vale. We hold 2,166 applications in total for the SE26 postcode area.

75% of outline 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 4SH
Application type
Lawful Development Certificate proposed
Scale / size
Small

Planning application dates

Date validated
16 January 2026
Last date for comments
13 March 2026
Target decision date
13 March 2026

Applicant and agent

Agent
DISTRICT Architects
Architect profile
DISTRICT ARCHITECTS LIMITED
Agent address
Studio 4, Blackwater Court, 17-19 Blackwater Street, London, SE22 8SD

Planning decision

Statutory period
56 days

Additional information

Planning Portal ID
PP-14627747
Comments
0
Documents
11
Constraints
3

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Article 4 direction: Small HMO Northern Extension
  • Local nature reserve: Dacres WoodNext to the site
  • Flood zone 1: Low probability (rivers and sea)

Possibly incomplete for this council: tree preservation orders.

Also checked, none recorded (21)

flood storage areas, conservation 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, 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.

Associated applications

  1. 2026
    16 Jan

    Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country…

    This applicationApprovedOutlineDC/26/142688
  2. 2026
    16 Jan

    Construction of a rear roof dormer extension, three frontslope rooflights, replacement of cladding to the…

    ApprovedHouseholderFiled alongsideDC/26/142690

Source: Lewisham

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

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