448 Chertsey Road Twickenham

1. 13 Oct 2025

   Received by Richmond upon Thames

2. 11 Nov 2025

   Decision issued: Granted Permission

3. 13 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.

Prior approval applications arise where permitted development rights already grant the principle of the work, such as larger home extensions, changes of use to housing or agricultural buildings. The council may only consider the specific matters set out in the rules, for example transport, flooding or appearance, and in many classes the work may proceed if the council does not respond within the deadline, commonly 56 days.

More on prior approval applications in our guide

• 448 Chertsey Road Twickenham

  PA25/2946 Submitted 26 Aug 2025 0m away

  Hip to gable and rear dormer roof extensions and a single storey rear extension

  Refused Prior approval Extension Loft or dormer 12 docs
  Small domestic

• 446, Chertsey Road, Twickenham, TW2 6LP

  PA25/3526 Submitted 7 Oct 2025 12m away

  Single storey rear extension following demolition of existing rear extension (6m depth, 2.82m eaves height, 3.95m overall height)

  Granted Prior approval Extension Demolition 14 docs
  Small domestic

• 446, Chertsey Road, Twickenham, TW2 6LP

  PA25/4247 Submitted 27 Nov 2025 12m away

  Single storey rear extension

  Granted Householder Extension 14 docs
  Small domestic

• 74, Devon Avenue, Twickenham, TW2 6PW

  PA25/4201 Submitted 24 Nov 2025 42m away

  Rear dormer roof extension to form a loft conversion with two rooflights in the front

  Granted Prior approval Extension Loft or dormer 7 docs

• 456 Chertsey Road Twickenham TW2 6LR

  PA26/1580 Submitted 7 May 2026 57m away

  Proposed extension to existing side/rear dormer and a front porch extension.

  Refused Householder Extension Loft or dormer 9 docs
  Small domestic

• 456 Chertsey Road Twickenham TW2 6LR

  PA26/2550 Submitted 22 Jul 2026 57m away

  Proposed front porch extension.

  Granted Householder Extension 7 docs
  Small domestic

• PA26/2877 Granted

  36 Pensford Avenue Kew

  Erection of side dormer.

  19 Aug 2026 Prior approval
• PA26/2978 Awaiting decision

  144 Broad Lane Hampton Richmond Upon Thames TW12 3BW

  PROPOSED SINGLE STOREY SIDE EXTENSION. PROPOSED LOFT ADDITION

  27 Aug 2026 Prior approval
• PA26/2981 Awaiting decision

  18 Lyndhurst Avenue Twickenham TW2 6BY

  single-storey rear extensions 6m depth, 3m eaves height, 3m overall height

  27 Aug 2026 Prior approval
• PA26/2975 Awaiting decision

  2 Twickenham Road Teddington TW11 8AG

  Loft Conversion involving hip to gable conversion and installation of 5 x roof lights

  27 Aug 2026 Prior approval
• PA26/2974 Awaiting decision

  12 Selkirk Road Twickenham TW2 6PX

  Demolition of existing conservatory and garage. Single storey rear extension, to be 3m deep, aligned with existing side elevation with flat roof and rooflights. Single storey side extension with rear wall aligned to existing main rear elevation with flat roof and rooflight. Front door relocated to the front elevation and front window relocated to side extension. First Floor flat roof dormers, with rooflights to flat and pitched roofs. All materials to match existing.

  27 Aug 2026 Prior approval