42 Westbury Road New Malden KT3 5BA

1. 16 Mar 2026

   Received by Kingston upon Thames

2. 20 Apr 2026

   Validated

   Checked as complete and ready for consideration.

3. 1 Jun 2026

   Decision issued: Application Granted

4. 22 Aug 2026

   Added to PlanIndex

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.

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

• 25 Westbury Road New Malden KT3 5BA

  23/01655/FUL Submitted 20 Jun 2023 42m away

  Erection of single storey rear extension and changes to side fenestration.

  Refused Full applications Extension Windows or glazing 13 docs
  Small domestic

• 50 Westbury Road New Malden KT3 5AX

  21/02092/CPU Submitted 29 Jun 2021 49m away

  Erection of single storey rear extension

  Refused Lawful development Extension 8 docs
  Small domestic

• 50 Westbury Road New Malden KT3 5AX

  21/03330/CPU Submitted 18 Oct 2021 49m away

  Erection of single-storey rear extension

  Granted Lawful development Extension 3 docs
  Small domestic

• 26 Westbury Road New Malden KT3 5BE

  25/03198/FUL Submitted 12 Dec 2025 73m away

  72% historically approved · decision due ~13 Mar

  Erection of a single storey rear extension

  Awaiting decision Full applications Extension 23 docs
  Small domestic

• 17 Albemarle Gardens New Malden KT3 5BB

  21/03069/HOU Submitted 23 Sep 2021 74m away

  Demolition of rear conservatory and erection of a single storey rear extension.

  Granted Householder Extension Demolition 7 docs
  Small domestic

• 37 Westbury Road New Malden KT3 5AX

  26/00841/TPO Submitted 20 Apr 2026 81m away

  T1: Lime - 3 metre Crown reduction, remove major dead wood. T2: Lime - 2 metre Crown reduction, remove basal growth. T3: Ash - Remove dead wood only (exempt works).

  Decided Trees 3 docs

• 26/01028/CPU Granted

  7 Lynton Close Chessington KT9 1HB

  Conversion of existing attached garage to utility room and WC ancillary to the main dwelling.

  13 May 2026 Lawful development
• 26/01012/CPU Granted

  40 Staunton Road Kingston Upon Thames KT2 5TJ

  Erection of hip to gable roof extension with rear dormer and installation of 2nos front roof lights

  12 May 2026 Lawful development
• 26/01468/CPU Granted

  112 Durlston Road Kingston Upon Thames KT2 5RU

  Erection of rear dormer roof extension and installation of 2nos front rooflights.

  3 Jul 2026 Lawful development
• 26/00870/CPU Refused

  14 Regent Road Surbiton KT5 8NL

  Erection of hip-to-gable and rear dormer roof extension with Juliet balcony and 1no. front rooflight to facilitate loft conversion.

  23 Apr 2026 Lawful development
• 26/01068/CPU Granted

  27 Dawson Road Kingston Upon Thames KT1 3AU

  Erection of single storey rear extension with alteration to side fenestration.

  20 May 2026 Lawful development