55, MARKSBURY AVENUE, LONDON, UNITED KINGDOM, TW9 4JF

1. 7 Apr 2026

   Received by Richmond upon Thames

2. 9 Apr 2026

   Validated

   Checked as complete and ready for consideration.

3. 26 May 2026

   Decision issued: Granted Permission

4. 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

• 55, MARKSBURY AVENUE, RICHMOND, RICHMOND UPON THAMES, TW9 4JE

  PA26/2440 Submitted 11 Jul 2026 0m away

  Erection of a single storey rear extension extending 5.0 metres beyond the original rear wall of the dwellinghouse, 2.7m in height, and 2.5m in height to eaves.

  Granted Prior approval Extension 7 docs
  Small domestic

• 57, Marksbury Avenue, Richmond, TW9 4JE

  PA25/3200 Submitted 16 Sep 2025 7m away

  Single-storey rear extension (6m depth, 4m height and 2.88m in height to eaves).

  Refused Prior approval Extension 12 docs
  Small domestic

• 49 Marksbury Avenue Richmond Richmond Upon Thames TW9 4JE

  05/1609/HOT Submitted 31 May 2005 29m away

  Demolition of existing extension and garage. Erection of single storey side and rear extension.

  Granted Householder Extension Demolition 25 docs
  Small domestic

• 54 Marksbury Avenue Richmond TW9 4JF

  23/1039/ES191 Submitted 19 Apr 2023 49m away

  CONVERT ROOF FROM HIP TO GABLE AND NEW REAR DORMER. ROOFLIGHTS TO FRONT ELEVATION

  Granted Lawful development Loft or dormer 12 docs

• 46 Marksbury Avenue Richmond Richmond Upon Thames TW9 4JF

  05/3416/HOT Submitted 16 Nov 2005 51m away

  First floor rear extension.

  Granted Householder Extension 6 docs
  Domestic

• 69 Marksbury Avenue Richmond Richmond Upon Thames TW9 4JE

  05/1470/PS192 Submitted 16 May 2005 53m away

  Proposed roof extension with rear dormer.

  Granted Prior approval Extension Loft or dormer 6 docs

• 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