Planning application
20 Harlescott Road London Southwark SE15 3BZ
Works: Extension Loft or dormer
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Certificate of lawfulness (proposed) for conversion of Loft including formation of rear dormer and outrigger with skylights to front roof slope.
As published by the council, reference 26/AP/0307
Application record
- Reference
- 26/AP/0307
- Type
- Certificate of Lawful Dev. - Proposed
- Status
- Granted
- Decision
- Certificate of Lawfulness Prop- GRANTED
- Received
- 3 Feb 2026
- Validated
- 3 Feb 2026
- Decided
- 25 Mar 2026
- Ward
- Peckham Rye
- Parish
- Peckham And Nunhead
- Decision by
- Delegated Panel - Simple
- Postcode
- SE15 3BZ
Site history
Applications at this address on the Southwark register
This site has had 2 applications since 2026: 2 approved, 0 refused.
-
26/AP/0394 Granted
20 Harlescott Road London Southwark SE15 3BZ
Construction of a single storey ground floor wraparound rear extension.
Timeline
Dates from the published record
-
3 Feb 2026
Received by Southwark
-
25 Mar 2026
Decision issued: Certificate of Lawfulness Prop- GRANTED
-
10 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Agent on file, a design practice registered in Dartford
16 applications on PlanIndex · across 4 councils · 67% granted
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
9 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.
Trade members open them from here.
Open the documentsWhat this grant of permission means
Southwark granted permission on 25 March 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 lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
20 Harlescott Road London Southwark SE15 3BZ
Construction of a single storey ground floor wraparound rear extension.
Granted Householder Extension 11 docsSmall domestic -
22 Harlescott Road London Southwark SE15 3BZ
95% historically approved · decision due ~6 Jan
Certificate of lawful development (proposed) for a roof dormer over the main roof slope, a dormer over the existing rear projection and alterations to the existing ground floor outrigger. Please refer to supporting documents for details.
Awaiting decision Lawful development Extension Loft or dormer 11 docs -
22 Harlescott Road London Southwark SE15 3BZ
95% historically approved · decision due ~8 Jan
Construction of a roof dormer, over the rear pitch of the main roof, a dormer over the existing rear projection and alterations to the existing ground floor rear extension.
Awaiting decision Householder Extension Loft or dormer 18 docsDomestic -
6 Harlescott Road London Southwark SE15 3BZ
Construction of a L-shaped dormer loft extension to the rear with a ridge line raise of 500mm and installation of 2no rooflights to the front roof slope.
Granted Householder Extension Loft or dormer 14 docsDomestic -
20 Limesford Road London Southwark SE15 3BX
Erection of a single-storey side infill extension to the rear.
Granted Householder Extension 22 docsSmall domestic -
220 Ivydale Road London Southwark SE15 3BU
Construction of an L-shaped rear dormer over the main roof and outrigger roof, including ridge height raise by 400mm, removal of the outrigger chimney, and insertion of 3no. rooflights to the front slope of the main roof and one upward facing rooflight on the main dormer flat roof.
Granted Householder Extension Loft or dormer +1 12 docsDomestic
Other lawful development applications
In Southwark
-
26/AP/1316 Granted
Seavington House Champion Hill London Southwark SE5 8DN
Certificate of lawfulness (proposed) to confirm excavation works carried out on the site in the form of trial pits constitute a material operation under the Town and Country Planning Act 1990 and therefore represent lawful commencement of the approved planning permission 22/AP/0174.
-
26/AP/1420 Granted
40 Strathnairn Street London Southwark SE1 5BL
Certificate of lawfulness (proposed) for construction of a ground floor rear extension and a rear dormer.
-
26/AP/1618 Granted
252 Barry Road London Southwark SE22 0JS
Certificate of lawful development (proposed) for the construction of a rear dormer extension.
-
26/AP/1577 Granted
Residence Inn By Marriott London Bridge 201-211 Long Lane London SE1 4PN
Certificate of lawfulness (proposed) for undertaking of facade remedial works to remove combustible cladding materials and replace with a like-for-like non-combustible cladding with no change to the outer aesthetics of the building.
-
26/AP/1509 Withdrawn
Railway Arch 101 Rockingham Street London Southwark SE1 6PD
Certificate of lawfulness (proposed) for confirmation of implementation of planning permission 22/AP/3065: Change of use of the railway arch at 101 Rockingham Street from Use Class B8 (Storage/Distribution) to Use Classes E (Commercial, Business and Service) and F2 (Local Community) and a new glazed facade to the exterior including 2x extractor fans.