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12 De Montfort Road London SW16 1LZ

26/00074/LDCPCertificate of Lawful Use proposedApproved
Outline / PiP

Approved on 5 March 2026

Council decision: Grant PermissionDelegated (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 certificate of lawfulness (proposed) for the erection of a rear L shape dormer with three roof lights to the front and a Juliet balcony to the rear.

Received
10 January 2026
Decision level
Delegated (officer decision)
Ward
Streatham St Leonards
Agent
A0 Design Studio
  1. Received10 Jan
  2. Validated12 Jan
  3. Consult.
  4. Target9 Mar
  5. Decided5 Mar

Decided in 52 days (council typically 56)

About this application

This is an outline application for a dormer extension at 12 De Montfort Road London SW16 1LZ. Lambeth has handled 400 applications of this type. This one was decided in 54 days. There are no previous applications recorded at this address. In the past year there have been 61 applications across Streatham St Leonards. We hold 3,708 applications in total for the SW16 postcode area.

81% of outline applications at London Borough of Lambeth 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.See what's approved near your address

Application details

Postcode
SW16 1LZ
Application type
Certificate of Lawful Use proposed
Scale / size
Small

Planning application dates

Date validated
12 January 2026
Target decision date
9 March 2026

Applicant and agent

Agent
A0 Design Studio
Architect profile
A0 DESIGN STUDIO LTD
Agent address
124 City Road London EC1V 2NX

Planning decision

Statutory period
56 days

Additional information

Comments
0
Documents
6

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (24)

flood storage areas, conservation areas, listed buildings, Article 4 directions, tree preservation orders, 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.

Source: Lambeth

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

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