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3 Sienna Place, Lessing Street, London, SE23 1AZ

DC/26/143789Lawful Development Certificate proposedApproved
Outline / PiP

Approved on 10 July 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) under Section 192 of the Town and Country Planning Act 1990 (as amended) and Classes A, C, D and F of Part 1, Schedule 2 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the erection of a single-storey glass-fronted porch, removal of the front boundary wall, provision of permeable hardstanding and soft landscaping, installation of rooflights, alterations to the rear dormer window, and the placement of a freestanding timber refuse/parcel enclosure within the front garden at 3 Sienna Place, Lessing Street, SE23.

Received
23 April 2026
Decision level
Delegated (officer decision)
Ward
Crofton Park
Agent
Debbie Flevotomou Architects
  1. Received23 Apr
  2. Validated15 May
  3. Consult.10 Jul
  4. Target10 Jul
  5. Decided10 Jul

Decided in 56 days (council typically 56)

About this application

This is an outline application for a dormer extension at 3 SIENNA PLACE, LESSING STREET, LONDON, SE23 1AZ. Lewisham has handled 1,023 applications of this type. This one was decided in 78 days, 3 weeks longer than Lewisham's typical decision time. The site is in a conservation area. There has been 1 other application at this address. In the past year there have been 136 applications across Crofton Park. We hold 2,610 applications in total for the SE23 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
SE23 1AZ
Application type
Lawful Development Certificate proposed
Scale / size
Small
Parish
Does NOT need to go to BCAP

Planning application dates

Date validated
15 May 2026
Last date for comments
10 July 2026
Target decision date
10 July 2026

Applicant and agent

Agent
Debbie Flevotomou Architects
Agent address
2nd Floor, Berkeley Square House, Berkeley Square, Mayfair, london, London, W1J 6BD

Planning decision

Statutory period
56 days

Additional information

Planning Portal ID
PP-14874503
Comments
0
Documents
14
Constraints
7

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
    23 Apr

    Application for a Lawful Development Certificate (Proposed) under Section 192 of the Town and Country…

    This applicationApprovedOutlineDC/26/143789
  2. 2026
    23 Apr

    Installation of an internal roller shutter and reduction to the height of the windows within the second floor…

    ApprovedHouseholderFiled alongsideDC/26/143790

Source: Lewisham

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

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