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18 Clapham Common North Side London SW4 0RQ

25/03074/LBListed Building ConsentRefused

Refused on 25 November 2025

Council decision: Refuse PermissionDelegated (officer decision)2 reasons 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

Erection of a lower ground floor single storey, rear infill extension and creation of an enlarged patio; replacement and refurbishment of windows to the front and rear elevations to match existing; waterproofing and insulation of existing roof; erection of a new rear garden outbuilding with basement to replace existing outbuilding; and other associated works. Full refurbishment of interiors, including electrical re-wiring, and new plumbing and heating; alterations to reinstate original circulation route on second floor; addition of new bathroom in existing subdivided room on second floor level; installation of new staircase to access the third floor and reconfigured layout at the third floor level; and other associated works. (Please note: The reference number for this Listed Building Consent application is 25/03074/LB, but there is also an associated application for Full Planning Permission related to these works with reference number: 25/03073/FUL)

Received
30 September 2025
Decision level
Delegated (officer decision)
Public comments
2
Ward
Clapham Town
Agent
Delve Architects Ltd
  1. Received30 Sep
  2. Validated30 Sep
  3. Consult.5 Nov
  4. Target25 Nov
  5. Decided25 Nov

Decided in 56 days (council typically 56)

About this application

This is a heritage application for an outbuilding at 18 Clapham Common North Side London SW4 0RQ. Lambeth has handled 180 applications of this type. This one was decided in 56 days. The site is in the Clapham conservation area, with 2 listed buildings nearby. There have been 3 other applications at this address. In the past year there have been 209 applications across Clapham Town. We hold 2,293 applications in total for the SW4 postcode area.

78% of heritage 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. The removal of the historic rear elevation and flank wall of the return to create an open-plan dining area would result in the irreversible loss of significant historic fabric and harm the original plan form and spatial character. This is contrary to the Planning (Listed Buildings and Conservation Areas) Act 1990, the advice contained within the NPPF, Local Plan Policy Q20 and London Plan Policy HC1.
  2. The proposal provides insufficient information on ventilation, drainage, plumbing, and servicing for the bathrooms and WCs proposed at lower ground, first, second, and third floors which may result in intrusive service runs, and/or moisture damage to historic timber panelling and interiors. In particular, the second-floor bathroom and associated boxed-in pipework within Grade II* listed Georgian interiors would cause unjustified harm to the building's historic fabric, risk the loss of historic walls and impact on visual integrity. This cumulative harm to the building's special interest is not outweighed by public benefits and is contrary to the Planning (Listed Buildings and Conservation Areas) Act 1990, the advice contained within the NPPF, Local Plan Policy Q20, and London Plan Policy HC1.

From the council's decision notice.

Application details

Postcode
SW4 0RQ
Application type
Listed Building Consent
Scale / size
Small

Planning application dates

Date validated
30 September 2025
Consultation expiry
14 November 2025
Consultation end
5 November 2025
Neighbour consultation end
5 November 2025
Target decision date
25 November 2025

Applicant and agent

Agent
Delve Architects Ltd
Architect profile
DELVE ARCHITECTS LIMITED
Agent address
Unit 1.104, The Leather Market 11-13 Weston Street London SE1 3ER

Planning decision

Statutory period
56 days

Publicity

Advertisement expiry
14 November 2025
Site notice end
14 November 2025

Additional information

Documents
24
Constraints
4

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Also checked, none recorded (21)

flood storage areas, Article 4 directions, 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. 2025
    30 Sep

    Erection of a lower ground floor single storey, rear infill extension and creation of an enlarged patio…

    RefusedListed building consentPart of25/03073/FUL
  2. 2025
    30 Sep

    Erection of a lower ground floor single storey, rear infill extension and creation of an enlarged patio…

    This applicationRefusedListed building consent25/03074/LB

Source: Lambeth

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

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