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Planning application

40 Seymour Avenue Ewell Surrey KT17 2RR

Granted Epsom and Ewell 25/01158/CLP Certificate of Lawfulness - Proposed Use

Works: Extension Loft or dormer

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Rear roof extension (involving conversion of roofspace to habitable use) and installation of three rooflight to front roofslope (Application for a Certificate of Lawful Development - Proposed).

As published by the council, reference 25/01158/CLP

Application record

Reference
25/01158/CLP
Type
Certificate of Lawfulness - Proposed Use
Status
Decided
Decision
Granted As published: Application Permitted
Received
12 Nov 2025
Validated
12 Nov 2025
Decided
7 Jan 2026
Ward
Nonsuch
Decision by
Delegated Decision
Postcode
KT17 2RR

Timeline

Dates from the published record

  1. 12 Nov 2025

    Received by Epsom and Ewell

  2. 7 Jan 2026

    Decision issued: Application Permitted

  3. 11 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Archcore Architects Agent, an architecture practice registered in Cardiff

Active · incorporated 2018 · Cardiff

17 applications on PlanIndex · across 4 councils · 65% granted

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Documents

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

10 documents on file for this application

  • PECLPZ Decision · 07 Jan 2026
  • PECLPZ Decision · 07 Jan 2026
  • Officer Report Decision · 05 Jan 2026
  • ACKN Correspondence · 13 Nov 2025
  • Location and Proposed Block Plan Plans · 12 Nov 2025
  • Application Form - without Personal data Application Form · 29 Sep 2025
  • Existing and Proposed Plans and Elevations Plans · 29 Sep 2025
  • CIL Additional Information Form Supporting Information · 29 Sep 2025
  • Location Plan Plans · 29 Sep 2025
  • INVAL Correspondence · 29 Sep 2025

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What this grant of permission means

Epsom and Ewell granted permission on 7 January 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

About lawful development applications

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • Telecommunications Mast - CTIL Greenfield At Warren Farm Seymour Avenue Surrey Epsom KT17 2RS

    24/01050/T56 Submitted 9 Aug 2024 100 yards away

    Notification Application in terms of Part 16 of Schedule 2 to the Town and Country Planning (General Permitted Development) Order 2015: The installation of a 20m Apollo monopole supporting 6no. antennas, 1no. 300mm transmission dish and ancillary development thereto.

    Refused Telecoms 26 docs

  • 88 Arundel Avenue Ewell Surrey KT17 2RL

    21/01216/FLH Submitted 20 Jul 2021 150 yards away

    Erection of single storey rear extension.

    Granted Householder Extension 14 docs
    Small domestic

  • 88 Arundel Avenue Ewell Surrey KT17 2RL

    21/00583/CLP Submitted 7 Apr 2021 150 yards away

    Proposed single storey rear extension.

    Withdrawn Lawful development Extension
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  • 1 Castlemaine Avenue Ewell Surrey KT17 2RD

    25/01460/FLH Submitted 10 Dec 2025 150 yards away

    New double garage and conversion of existing garage to accommodate a habitable space. Single storey rear extension, first floor side extension and roof extension incorporating a rear dormer and roof lights. Alterations to fenestration.

    Granted Householder Extension Loft or dormer +1 12 docs
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  • 50 Fairfax Avenue Ewell Surrey KT17 2QP

    24/01146/FLH Submitted 18 Nov 2024 250 yards away

    Single storey front extension incorporating a wooden open porch and a two storey side extension following demolition of existing garage, Single storey rear extension and alterations to fenestration.

    Refused Householder Extension Demolition +1 17 docs
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  • 10 Castlemaine Avenue Ewell Surrey KT17 2RA

    24/00981/FLH Submitted 19 Sep 2024 250 yards away

    Garage conversion to accommodate a habitable space, first floor flank extension and alterations to fenestration.

    Granted Householder Extension Windows or glazing 15 docs
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In Epsom and Ewell

  • 26/01230/CLP Awaiting decision

    Flat 26 Teddington Close Epsom Surrey KT19 9DW

    Lawful Development Certificate - Proposed Use: Formation of a vehicular crossover including dropped kerb to access a new permeable surface driveway

    Lawful development
  • 26/01212/CLP Awaiting decision

    62 Parkview Way Epsom Surrey KT19 8FF

    Lawful Development Certificate - Proposed Use: Conversion of garage to accommodate a habitable space and store area incorporating internal reconfiguration, alterations to fenestration and associated works.

    Lawful development
  • 26/01221/CLE Awaiting decision

    3 Hillcrest Close Epsom Surrey KT18 5JY

    Lawful Development Certificate - Existing Use:- Single storey rear garden outbuilding

    Lawful development
  • 26/01198/CLP Awaiting decision

    63 Nonsuch Walk Cheam Surrey SM2 7LF

    Lawful Development Certificate - Proposed Use: Single storey side extension following demolition of existing garage and outbuildings

    Lawful development
  • 26/00983/CLP Awaiting decision

    71 Nonsuch Walk Cheam Surrey SM2 7LF

    Lawful Development Certificate - Proposed Use: Single storey rear extension

    Lawful development