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Planning application

DC/26/0256/CLP

20 Adastral Close Newmarket Suffolk CB8 0PX

Granted West Suffolk Certificate of Lawful Proposed Use/Dev

Proposal

Application for lawful development certificate for proposed use or development - single storey rear extension

As published by the council, reference DC/26/0256/CLP

Timeline

Dates from the published record

  1. 16 Feb 2026

    Received by West Suffolk

  2. 10 Apr 2026

    Decision issued: Approve application

  3. 24 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

About lawful development applications

How this application type works

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

Nearby applications

Within 500 metres

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  • DC/26/0242/HH Granted

    57 Edinburgh Road Newmarket Suffolk CB8 0QD

    Householder planning application - a. single storey front extension b. render to front elevation and c. first floor extension above existing garage

    13 Feb 2026 341m away Householder
  • DCON(A)/24/0485 Granted

    61 Edinburgh Road Newmarket Suffolk CB8 0QD

    Application to discharge condition 3 (flood resistance) of DC/24/0485/HH

    12 Jan 2026 345m away Conditions
  • DC/26/0898/HH Awaiting decision

    64 Edinburgh Road Newmarket Suffolk CB8 0QD

    Householder planning application - single storey rear extension (following demolition or existing conservatory)

    12 Jun 2026 346m away Householder
  • DC/26/0400/VAR Granted

    121 Freshfields Newmarket Suffolk CB8 0EH

    Planning application - Variation of condition 1 (opening hours) of DC/19/1512/P3CPA to extend the opening hours to Monday to Saturday 7am to 10pm Sunday and Bank Holidays 7am to 8pm

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  • DC/26/0173/HH Granted

    22 Edinburgh Road Newmarket Suffolk CB8 0QF

    Householder planning application - a. raise roof to provide additional habitable accommodation b. changes to fenestration on front elevation including timber cladding c. one dormer and one rooflight on front elevation d. single storey rear extension including air source heat pump and e. rooflights on rear elevation f. render all elevations

    4 Feb 2026 368m away Householder

In West Suffolk

  • DC/26/0810/CLP Granted

    16 Linton Close Newmarket Suffolk CB8 0AE

    Application for lawful development certificate for proposed use or development - convert existing integral garage into a habitable dining room including infill garage doors and insert window

    26 May 2026 Lawful development
  • DC/26/0794/CLP Granted

    9 High Street Newmarket Suffolk CB8 8LX

    Application for lawful development certificate for proposed use or development - change of use within class E (ground floor) to cafe/restaurant

    21 May 2026 Lawful development
  • DC/26/1030/CLP Withdrawn

    Larchfield Mere Farm Lane Great Barton Suffolk IP31 2PH

    Application for lawful development certificate for proposed use or development - single storey side extension set back from the wall forming the existing principal elevation

    8 Jul 2026 Lawful development
  • DC/26/0427/CLE Granted

    The Old Forge, Annexe The Street Bradfield Combust Suffolk IP30 0LP

    Application for lawful development certificate - Use of the detached building within the site as a self-contained single dwellinghouse

    17 Mar 2026 Lawful development
  • DC/26/1102/CLE Awaiting decision

    Mulberry House 20 Greys Close Cavendish Suffolk CO10 8BT

    Application for lawful development certificate for existing use or development - seeking confirmation of commencement of approved development DC/23/0965/HH through installation of front elevation roof light

    22 Jul 2026 Lawful development