42 Treen Avenue Barnes London SW13 0JT

1. 10 Apr 2026

   Received by Richmond upon Thames

2. 15 May 2026

   Decision issued: GPD Extension Approved

3. 13 Aug 2026

   Added to PlanIndex

Richmond upon Thames granted permission on 15 May 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

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.

• 11 Treen Avenue Barnes London SW13 0JR

  23/0438/HOT Submitted 20 Feb 2023 50 yards away

  Erection of single storey rear extension.

  Granted Householder Extension 18 docs
  Small domestic

• 32, Treen Avenue, London, SW13 0JT

  PA26/0313 Submitted 29 Jan 2026 50 yards away

  Single-storey rear extension.

  Granted Prior approval Extension 19 docs
  Small domestic

• 9 Tudor Gardens Barnes London SW13 0JS

  23/0646/HOT Submitted 13 Mar 2023 50 yards away

  Loft conversion with rear box dormer and 3 front facing roof windows to roof slope

  Granted Householder Loft or dormer Windows or glazing 12 docs
  Domestic

• 27 Treen Avenue Barnes Richmond Upon Thames SW13 0JR

  04/4115/HOT Submitted 30 Dec 2004 50 yards away

  Loft extension with rear dormer

  Granted Householder Extension Loft or dormer 5 docs
  Domestic

• 34 Westwood Road Barnes Richmond Upon Thames SW13 0LA

  05/2187/PS192 Submitted 21 Jul 2005 50 yards away

  Ground floor rear extension, loft extension with side and rear dormers.

  Granted Prior approval Extension Loft or dormer 9 docs

• 5 Westwood Gardens Barnes Richmond Upon Thames SW13 0LB

  05/1833/HOT Submitted 9 Jun 2005 50 yards away

  Roof extension with rear dormer.

  Refused Householder Extension Loft or dormer 4 docs
  Domestic

• PA26/2683 Granted

  3, Pauline Crescent, Twickenham, TW2 6JD

  Single storey rear extension

  Received 31 Jul, published by the council 13 Aug 2026 Prior approval
• PA26/3420 Awaiting decision

  129 Lower Mortlake Road Richmond TW9 2LP

  Conversion of existing loftspace into habitable rooms with dormers to rear over main house and offshot

  Received 8 Oct, published by the council 12 Oct 2026 Prior approval
• PA26/3160 Granted

  2A Station Road Hampton Wick Middlesex KT1 4HG

  Repair of the front dormer cheeks, involving the replacement of the existing hanging slates with traditional lead.

  Received 11 Sep, published by the council 24 Sep 2026 Prior approval
• PA26/3423 Awaiting decision

  95 Selkirk Road Twickenham TW2 6PT

  Construction of single storey rear extension, 4.3m in depth, 3m in height and 3m in height to eaves.

  Received 6 Oct, published by the council 12 Oct 2026 Prior approval
• PA26/3389 Awaiting decision

  39, Shacklegate Lane, Teddington, TW11 8SF

  The existing 4.55 m deep ground-floor rear extension is to be extended by 1.45 m. The existing pitched roof will also be extended, with the overall height remaining unchanged (6m overall depth, 2.41m eaves height, 3.78m overall height).

  Received 5 Oct, published by the council 6 Oct 2026 Prior approval