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Planning application

18 Clapham Common North Side London SW4 0RQ

Refused Lambeth 25/03073/FUL Full Planning Permission

Works: Extension Windows or glazing Small domestic

Read from the description, not a valuation. How we read the register

Relates to 25/03074/LB

Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.

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. (Please note: The reference number for this application for Full Planning Permission is 25/03073/FUL, but there is also an associated Listed Building Consent application related to these works with reference number: 25/03074/LB)

As published by the council, reference 25/03073/FUL

Application record

Reference
25/03073/FUL
Type
Full Planning Permission
Status
Decided
Decision
Refused As published: Refuse Permission
Received
30 Sep 2025
Validated
30 Sep 2025
Decided
26 Nov 2025
Ward
Clapham Town
Decision by
Delegated Decision
Postcode
SW4 0RQ

Site history

Applications at this address on the Lambeth register

This site has had 4 applications since 2025: 0 approved, 2 refused.

  • 26/01563/FUL Decided

    18 Clapham Common North Side London SW4 0RQ

    Application for Full Planning Permission for the erection of a new rear garden outbuilding with basement to replace existing outbuilding; replacement and refurbishment of windows to the front and rear elevations to match existing; waterproofing and insulation of existing roof, rehung of existing tiles. Reinstatement of existing front door with glazing, leaded canopy repaired and other associated works.

    Submitted 22 May 2026 Full applications
  • 26/01564/LB Decided

    18 Clapham Common North Side London SW4 0RQ

    Application for Listed Building Consent for the erection of a new rear garden outbuilding with basement to replace existing outbuilding; replacement and refurbishment of windows to the front and rear elevations to match existing; waterproofing and insulation of existing roof, rehung of existing tiles. Reinstatement of existing front door with glazing, leaded canopy repaired 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. (Full Planning Permission ref: 26/01563/FUL application received).

    Submitted 22 May 2026 Heritage and listed buildings
  • 25/03074/LB Refused

    18 Clapham Common North Side London SW4 0RQ

    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)

    Decided 25 Nov 2025 Heritage and listed buildings

Timeline

Dates from the published record

  1. 30 Sep 2025

    Received by Lambeth

  2. 26 Nov 2025

    Decision issued: Refuse Permission

  3. 11 Aug 2026

    Added to PlanIndex

Cases linked to this one on the register

  • 25/03074/LB Refused

    18 Clapham Common North Side London SW4 0RQ

    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)

    Decided 25 Nov 2025 Heritage and listed buildings

1 later application on the register refers to this one:

  • 25/03074/LB Refused

    18 Clapham Common North Side London SW4 0RQ

    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)

    Decided 25 Nov 2025 Heritage and listed buildings

Who's behind it

Company information only, from the register and Companies House

Delve Architects Ltd Agent, an architecture practice registered in London

Active · incorporated 2018 · London

18 applications on PlanIndex · across 4 councils · 79% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

Plans, drawings, consultee responses and the officer's report

24 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.

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Open the documents

What this refusal means

Lambeth refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

About full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 18 Clapham Common North Side London SW4 0RQ

    25/03074/LB Submitted 30 Sep 2025 50 yards away

    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)

    Refused Heritage and listed buildings Extension Windows or glazing 24 docs
    Small domestic
  • 18 Clapham Common North Side London Lambeth SW4 0RQ

    24/02605/TCA Submitted 19 Aug 2024 50 yards away

    Back Garden: T1 Bay tree FELL to Ground Level.

    Granted Trees 5 docs
  • 18 Clapham Common North Side London SW4 0RQ

    26/01563/FUL Submitted 22 May 2026 50 yards away

    78% historically approved · decision due ~17 Jul

    Application for Full Planning Permission for the erection of a new rear garden outbuilding with basement to replace existing outbuilding; replacement and refurbishment of windows to the front and rear elevations to match existing; waterproofing and insulation of existing roof, rehung of existing tiles. Reinstatement of existing front door with glazing, leaded canopy repaired and other associated works.

    Decided Full applications Windows or glazing 23 docs
  • 18 Clapham Common North Side London SW4 0RQ

    26/01564/LB Submitted 22 May 2026 50 yards away

    79% historically approved · decision due ~17 Jul

    Application for Listed Building Consent for the erection of a new rear garden outbuilding with basement to replace existing outbuilding; replacement and refurbishment of windows to the front and rear elevations to match existing; waterproofing and insulation of existing roof, rehung of existing tiles. Reinstatement of existing front door with glazing, leaded canopy repaired 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. (Full Planning Permission ref: 26/01563/FUL application received).

    Decided Heritage and listed buildings Windows or glazing 23 docs
  • Archway House 21 Clapham Common North Side London Lambeth SW4 0RQ

    26/02834/VOC Submitted 29 Sep 2026 50 yards away

    90% historically approved · decision due ~8 Dec

    Variation of condition 2 (Approved plans) and removal of conditions 5 (Sample) and 7 (Method statement) of Planning Permission ref: 25/01679/FUL and Listed Building consent : 25/01680/LB (Repairs to internals, elevations, roof, and garden wall. New mechanical plant and associated store. New heating, plumbing and electrical services. Alterations to external terrace and landscaping and installation of doors to archway) granted 22.08.2025. Variation sought : Condition 2 : The additional dormers are no longer implemented as part of the roof works, and retaining the existing configuration of dormer windows. The floor in the lower ground floor is no longer to be lowered; the existing kitchen is not going to be subdivided and no kitchen is going to be located in the ground floor dining room. Installation of 4x extract terminals to the rear. Removal sought: Condition 5 : The existing bricks are no longer proposed to be cleaned. Condition 7: The proposed relocation of the kitchen to the existing panelled dining room and the installation of sanitaryware within the panelled closet room on the ground floor are no longer considered.

    Awaiting decision Amendments Loft or dormer Windows or glazing 6 docs
  • Archway House 21 Clapham Common North Side London SW4 0RQ

    26/03015/DET Submitted 14 Oct 2026 50 yards away

    84% historically approved · decision due ~9 Dec

    Approval of details pursuant to conditions 3 (drawings), 4 (brick work method statement) & 5 (sample of the test area of the cleaning of the water staining) of planning permission 25/01679/FUL (Repairs to internals, elevations, roof, and garden wall. New mechanical plant and associated store. New heating, plumbing and electrical services. Alterations to external terrace and landscaping and installation of doors to archway) granted on 22.08.2025.

    Awaiting decision

In Lambeth

  • 26/03073/FUL Awaiting decision

    10 Claverdale Road London SW2 2DP

    Erection of a single storey ground floor rear side infill extension. Erection of a rear dormer roof extension with juliet balcony and installation of a roof light to rear return roof.

    Received 20 Oct, published by the council 23 Oct 2026 Full applications
  • 26/03040/FUL Awaiting decision

    3 Walberswick Street London Lambeth SW8 1XF

    Erection of a second-storey rear extension and the addition of a window to the mansard. Reduction from a double sliding door to a single door with a Juliet balcony

    Received 15 Oct, published by the council 21 Oct 2026 Full applications
  • 26/03004/FUL Awaiting decision

    61 Amesbury Avenue London Lambeth SW2 3AE

    Erection of a single storey rear infill extension, replacement of the existing timber sash windows with double glazed timber sash windows, erection of new fence to front patio and installaton of Air Source Heat Pump to existing roof.

    Received 14 Oct, published by the council 21 Oct 2026 Full applications
  • 26/02990/FUL Awaiting decision

    85 Clapham Manor Street London Lambeth SW4 6DR

    Construction of a mansard-roof extension to provide additional residential accommodation.

    Received 13 Oct, published by the council 23 Oct 2026 Full applications
  • 26/02988/FUL Awaiting decision

    76 Bonham Road London Lambeth SW2 5HG

    Change of use of the ground floor to self contained unit (class C3), upper floors and loft to a large House in Multiple Occupation (Sui Generis), together with sub-division of the rear garden, installation of 2x rooflights to front roofslope, conversion of the existing garage to ancillary residential gym use, installation of air source heat pumps, and provision of cycle and refuse storage.

    Received 13 Oct, published by the council 22 Oct 2026 Full applications