23, Copthall Gardens, Twickenham, TW1 4HH

1. 23 Jul 2026

   Received by Richmond upon Thames

2. 28 Jul 2026

   Validated

   Checked as complete and ready for consideration.

3. 30 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 22 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Richmond upon Thames took a median of 46 days over the applications it decided in the last year.

This application is with Richmond upon Thames for determination, against a statutory target of eight weeks. Over the last year Richmond upon Thames decided prior approval applications in a median of 39 days. More in our guide to how long planning decisions take.

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

• 19 Copthall Gardens Twickenham TW1 4HH

  PA26/0509 Submitted 16 Feb 2026 13m away

  L-Shaped Dormer Loft conversion and installation of three roof lights on the front roof slope

  Granted Prior approval Loft or dormer 14 docs

• 19, Copthall Gardens, Twickenham, TW1 4HH

  PA26/1624 Submitted 11 May 2026 13m away

  Removal of existing extension and construction of a new single storey rear extension.

  Granted Householder Extension 10 docs
  Small domestic

• 17 Copthall Gardens Twickenham Richmond Upon Thames TW1 4HH

  04/4044/PS192 Submitted 23 Dec 2004 23m away

  Loft extension.

  Granted Prior approval Extension Loft or dormer 7 docs

• 32 Copthall Gardens Twickenham Richmond Upon Thames TW1 4HJ

  05/2912/HOT Submitted 3 Oct 2005 40m away

  Erection of single storey rear extension.

  Granted Householder Extension 6 docs
  Small domestic

• 24 Copthall Gardens Twickenham TW1 4HJ

  24/1951/VRC Submitted 1 Aug 2024 42m away

  Variation of condition U0180923 Approved Drawings of planning permission 24/0480/HOT to allow for increase in height and reduced width of proposed extension.

  Granted Amendments Extension 7 docs

• 38 Copthall Gardens Twickenham Richmond Upon Thames TW1 4HJ

  05/3120/HOT Submitted 24 Oct 2005 44m away

  Single storey side extension.

  Granted Householder Extension 10 docs
  Small domestic

• PA26/2560 Granted

  32 Fortescue Avenue Twickenham TW2 5LS

  Construction of a hip to gable and rear dormer roof extension, rooflights to front elevation and single storey rear extension

  23 Jul 2026 Prior approval
• PA26/3175 Awaiting decision

  146, Waldegrave Road, Teddington, TW11 8NA

  CONSTRUCTION OF HIP TO GABLE AND REAR DORMER EXTENSIONS,INSERTION OF ROOFLIGHTS,ONE OBSCURE GLAZED SIDE WINDOW AND ALTERATIONS TO THE SOIL VENT PIPE. RESUBMISSION OF PREVIOUS REFUSED APPLICATION REF. PA26/2122.

  14 Sep 2026 Prior approval
• PA26/2193 Refused

  5, The Hermitage, Richmond, TW10 6SH

  ASHP unit to rear flat roof, AOV (automatic opening vent) - flue to rear flat roof

  23 Jun 2026 Prior approval
• PA26/2454 Granted

  11 Collingwood Close Twickenham TW2 7AE

  Hip to gable and rear dormer roof extensions and insertion of 2x rooflights to the front roof slope.

  13 Jul 2026 Prior approval
• PA26/0893 Granted

  21, Gloucester Road, Twickenham, TW2 6NF

  PROPOSED OUT BUILDING TO BE USED FOR STORAGE, SUMMER HOUSE AND GYMNASIUM

  13 Mar 2026 Prior approval