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82 Thurlow Hill London Lambeth SE21 8JN

25/03355/PDEHouseholders Extensions Prior ApprovalRefused
Householder

Refused on 5 December 2025

Council decision: Refused Extension GPDDelegated (officer decision)1 reason for refusal

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 prior approval for the erection of a single storey rear extension with dimensions of 6.0m (length), 3.0m (total maximum height) and 3.0m (height to the eaves)

Received
26 October 2025
Decision level
Delegated (officer decision)
Public comments
1
Ward
West Dulwich
Agent
ADVANCE BUILDING CONSULTANCY ltd
  1. Received26 Oct
  2. Validated26 Oct
  3. Consult.5 Dec
  4. Target5 Dec
  5. Decided5 Dec

Decided in 40 days (council typically 56)

About this application

This is an outline application for a single storey rear extension at 82 Thurlow Hill London Lambeth SE21 8JN. Lambeth has handled 400 applications of this type. This one was decided in 40 days, 2 weeks quicker than Lambeth's typical decision time. There are no previous applications recorded at this address. We hold 1,059 applications in total for the SE21 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

Why it was refused

  1. Prior approval is required and the proposed development, due to its bulk and size, would create a sense of enclosure to the neighbouring property. In addition, insufficient information has been submitted to demonstrate that there would not be an undue loss of natural light to the neighbouring property. As such the proposed development fails to comply with Schedule 2, Part 1, Class A of the Town and Country Planning (General Permitted Development) Order 2015 (as amended).

From the council's decision notice.

Application details

Postcode
SE21 8JN
Application type
Householders Extensions Prior Approval
Scale / size
Small

Planning application dates

Date validated
26 October 2025
Consultation expiry
5 December 2025
Neighbour consultation end
5 December 2025
Target decision date
5 December 2025

Applicant and agent

Agent
ADVANCE BUILDING CONSULTANCY ltd
Agent address
40 wise lane mill hill london NW7 2RE

Planning decision

Statutory period
40 days

Additional information

Documents
8
Constraints
2

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.

Planning history at this site

1 other application at this property, newest first.

  1. 2025
    15 Nov

    Erection of a single storey ground floor rear extension.

    ApprovedHouseholder25/03564/FUL

Source: Lambeth

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

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