Skip to content

18 Horsmonden Road, London, SE4 1RG

DC/26/145071FullApproved

Approved on 30 October 2026

Council decision: Granted

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 single-storey rear extension and rear dormer extension at 18 Horsmonden Road, SE4.

Received
17 August 2026
Public comments
0 · last counted 1 November 2026
Ward
Crofton Park
  1. Received17 Aug
  2. Validated17 Aug
  3. Consult.
  4. Target30 Oct
  5. Decided30 Oct

Decided in 74 days (council typically 56)

About this application

This is a full planning application for a single storey rear extension at 18 HORSMONDEN ROAD, LONDON, SE4 1RG. Lewisham has handled 2,816 applications of this type. This one was decided in 72 days, 2 weeks longer than Lewisham's typical decision time. There have been 2 other applications at this address. In the past year there have been 138 applications across Crofton Park. We hold 647 applications in total for the SE4 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
SE4 1RG
Application type
Full
Scale / size
Small
Parish
Not Available

Planning application dates

Date validated
17 August 2026
Target decision date
30 October 2026

Planning decision

Case officer
Lily Berry

Additional information

Documents
12

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
  • Flood zone 1: Low probability (rivers and sea)

Possibly incomplete for this council: tree preservation orders.

Also checked, none recorded (22)

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, 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.

Associated applications

  1. 2026
    19 Aug

    Construction of single-storey rear extension and rear dormer extension at 18 Horsmonden Road, SE4.

    This applicationApprovedFullDC/26/145071
  2. 2026
    17 Aug

    Roof level dormer extension and rear extension to mid terraced property

    WithdrawnHouseholderFiled alongsideDC/26/145072

Source: Lewisham

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

Track this application

Get email alerts when there is a planning decision or status change.

Get email alerts near SE4

New planning applications delivered to your inbox daily.

Around this site

Discuss this application on r/PlanningPermissionUK

For applicants and trades

Planning something similar?

See what the council approved and refused for loft conversions and dormers on your street. Pick your home and get the evidence before you pay for drawings.

See what gets approved on your streetBuying this property? Report on this address