17 Marksbury Avenue Richmond TW9 4JA

1. 13 Feb 2023

   Received by Richmond upon Thames

2. 23 Mar 2023

   Decision issued: GPD Extension Conditional

3. 16 Aug 2026

   Added to PlanIndex

The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.

If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.

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

• 15 Marksbury Avenue Richmond Richmond Upon Thames TW9 4JA

  05/3891/HOT Submitted 15 Dec 2005 6m away

  Single Storey extension to rear of a semi detached property.

  Granted Householder Extension 8 docs
  Small domestic

• 9 Marksbury Avenue Richmond Richmond Upon Thames TW9 4JA

  05/2834/HOT Submitted 20 Sep 2005 28m away

  Roof extension to side with rear dormer.

  Granted Householder Extension Loft or dormer 5 docs
  Domestic

• 45 Chilton Road Richmond TW9 4JB

  19/3374/HOT Submitted 6 Nov 2019 31m away

  Replacement single storey side/rear extension. Replacement front door and addition of window at the side of the door. The existing polycarbonate veranda will be changed to one with a glazed roof and a white structure matching existing.

  Granted Householder Extension Windows or glazing 17 docs
  Small domestic

• 20, Niton Road, Richmond, TW9 4LH

  PA26/2123 Submitted 16 Jun 2026 36m away

  Single storey rear extension

  Granted Householder Extension 13 docs
  Small domestic

• 20 Niton Road Richmond TW9 4LH

  24/2502/PS192 Submitted 7 Oct 2024 36m away

  Hip to gable , rear dormer roof extensions and roof lights . Single storey rear extension

  Granted Prior approval Extension Loft or dormer 16 docs
  Small domestic

• 18 Niton Road Richmond TW9 4LH

  24/2650/FUL Submitted 22 Oct 2024 43m away

  Single storey side and rear extensions

  Granted Full applications Extension 28 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