Planning application
18 HORSMONDEN ROAD, LONDON, SE4 1RG
Works: Extension Loft or dormer Small domestic
Read from the description, not a valuation. How we read the register
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Construction of single-storey rear extension and rear dormer extension at 18 Horsmonden Road, SE4.
As published by the council, reference DC/26/145071
Application record
- Reference
- DC/26/145071
- Type
- Householder Application
- Status
- Registered
- Received
- 17 Aug 2026
- Validated
- 15 Aug 2026
- Ward
- Crofton Park
- Postcode
- SE4 1RG
Site history
Applications at this address on the Lewisham register
This site has had 3 applications since 2026: 0 approved, 1 refused.
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DC/26/145072 Withdrawn
18 HORSMONDEN ROAD, LONDON, SE4 1RG
Roof level dormer extension and rear extension to mid terraced property
-
DC/26/144069 Refused
18 HORSMONDEN ROAD, LONDON, SE4 1RG
Construction of a porch, new timber front door, single-storey rear extension and rear roof extension with new standing seam zinc roof covering to entire roof, installation of one front roof light and one front cabrio rooflight, replacement aluminium framed windows, external wall insulation with silicate render finish to the front and rear elevations at 18 Horsmonden Road, SE4.
Timeline
Dates from the published record
-
15 Aug 2026
Validated
Checked as complete and ready for consideration.
-
17 Aug 2026
Received by Lewisham
-
25 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 10 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Lewisham took a median of 55 days over the applications it decided in the last year.
Documents
Plans, drawings, consultee responses and the officer's report
8 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.
Watch members (£5 a month) open the document list from here.
Open the documentsWhat happens while it is decided
This application is with Lewisham for determination, against a statutory target of eight weeks. Over the last year Lewisham decided householder applications in a median of 58 days. More in our guide to how long planning decisions take.
About householder applications
Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
1 HORSMONDEN ROAD, LONDON, SE4 1RG
Certificate of Lawful Development (Proposed) in respect of the construction of a hip to gable roof extension and a rear dormer extension at 1 Horsmonden Park SE4, together with the installation of roof lights in the front roof slope
Granted Lawful development Extension Loft or dormer 12 docs -
12 HORSMONDEN ROAD, LONDON, SE4 1RG
Application for a Lawful Development Certificate proposed submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) and Class A of Schedule [2], Part [1] of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the construction of a single-storey rear extension to 12 Horsmonden Road, SE4.
Granted Lawful development Extension 9 docsSmall domestic -
18 HORSMONDEN ROAD, LONDON, SE4 1RG
Roof level dormer extension and rear extension to mid terraced property
Withdrawn Householder Extension Loft or dormerDomestic -
18 HORSMONDEN ROAD, LONDON, SE4 1RG
Construction of a porch, new timber front door, single-storey rear extension and rear roof extension with new standing seam zinc roof covering to entire roof, installation of one front roof light and one front cabrio rooflight, replacement aluminium framed windows, external wall insulation with silicate render finish to the front and rear elevations at 18 Horsmonden Road, SE4.
Refused Householder Extension Loft or dormer +2 6 docsSmall domestic -
53 CROFTON PARK ROAD, LONDON, SE4 1AF
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 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the installation of two front rooflights, as well as the construction of a rear roof and outrigger roof extension at 53 Crofton Park Road, SE4.
Refused Lawful development Extension Loft or dormer 5 docs -
53 CROFTON PARK ROAD, LONDON, SE4 1AF
Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) Class A, B and C of Schedule 2, Part 1 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the replacement of rear outrigger window with new garden door, construction of an L-shaped rear dormer extension and installation of front rooflights at 53 Crofton Park Road, SE4.
Granted Lawful development Extension Loft or dormer +1 7 docs
Other householder applications
In Lewisham
-
DC/26/144603 Granted
6 FRIENDLY STREET, LONDON, SE8 4DT
Patial demoltion of existing rear additions, construction of a new single storey rear extension and all associated works at 6 Friendly Street, SE8
-
DC/26/145239 Awaiting decision
18 ARICA ROAD, LONDON, SE4 2PX
Construction of a single-storey side/rear wraparound extension featuring roof terrace with glazed privacy screen, L-shape rear roof extension with juliet balacony and two rooflights to the front roofslope of 18 Arica Road, London, SE4 2PX
-
DC/26/145216 Awaiting decision
54A ALLERFORD ROAD, LONDON, SE6 3DF
Erection of a single-storey rear extension, roof extensions including side/rear dormer structures and rooflights, installation of a front entrance canopy, and associated internal and external alterations at 54A Allerford Road SE6.
-
DC/26/145218 Awaiting decision
24 THORNWOOD ROAD, LONDON, SE13 5RG
The construction of a single-storey rear extension and rear terrace at 24 Thornwood Road, SE13.
-
DC/26/145214 Awaiting decision
87 GUIBAL ROAD, LONDON, SE12 9HF
The construction of a two-storey hipped-roof rear extension, replacing the existing conservatory; the construction of a single-storey flat-roof rear extension and a single-storey flat-roof side extension; the formation of an integral garage with associated alterations to the principal elevation, including the installation of garage doors; the replacement of windows and doors on the principal, rear and side elevations; the replacement and repositioning of rooflights; the application of external wall render to the principal elevation; the removal of existing arched features and their replacement with rectangular openings; the removal of soft landscaping and installation of permeable hardstanding to the front garden and driveway at 87 Guibal Road, SE12.