12, Strathearn Avenue, Twickenham, TW2 6JU

This site has had 4 applications since 2025: 2 approved, 2 refused.

• PA26/1523 Granted

  12, Strathearn Avenue, Twickenham, TW2 6JU

  Details pursuant to Condition C4 - Construction Management Plan, of planning permission PA26/0760.

  Decided 20 Aug 2026 Conditions
• PA26/0760 Granted

  12, Strathearn Avenue, Twickenham, TW2 6JU

  Proposed garage conversion to habitable room with new flat roof over and front elevation set back.

  Decided 28 Apr 2026 Householder
• PA25/3488 Refused

  12, Strathearn Avenue, Twickenham, TW2 6JU

  First Floor Side Extension, Conversion of Garage to Habitable Accommodation, Alterations to Elevations, And All Associated Works

  Decided 1 Dec 2025 Householder

1. 7 Oct 2025

   Received by Richmond upon Thames

2. 1 Dec 2025

   Decision issued: Refused Permission

3. 13 Aug 2026

   Added to PlanIndex

Richmond upon Thames refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 12, Strathearn Avenue, Twickenham, TW2 6JU

  PA25/3488 Submitted 3 Oct 2025 50 yards away

  First Floor Side Extension, Conversion of Garage to Habitable Accommodation, Alterations to Elevations, And All Associated Works

  Refused Householder Extension 25 docs
  Domestic

• 12, Strathearn Avenue, Twickenham, TW2 6JU

  PA26/0760 Submitted 4 Mar 2026 50 yards away

  Proposed garage conversion to habitable room with new flat roof over and front elevation set back.

  Granted Householder 9 docs
  Small domestic

• 12, Strathearn Avenue, Twickenham, TW2 6JU

  PA26/1523 Submitted 5 May 2026 50 yards away

  Details pursuant to Condition C4 - Construction Management Plan, of planning permission PA26/0760.

  Granted Conditions 6 docs

• 14, Strathearn Avenue, Twickenham, TW2 6JU

  PA26/3379 Submitted 1 Oct 2026 50 yards away

  84% historically approved · decision due ~26 Nov

  The application is for an L shaped ground floor extension with a side facing first floor extension and a front facing porch extension to a semi detached Edwardian property to create additional space for a family home.

  Awaiting decision Householder Extension 16 docs
  Small domestic

• 14, Strathearn Avenue, Twickenham, TW2 6JU

  PA26/3378 Submitted 1 Oct 2026 50 yards away

  86% historically approved · decision due ~26 Nov

  A hip to gable dormer loft conversion with associated internal remodelling and renovations

  Awaiting decision Prior approval Loft or dormer 16 docs

• 16 Strathearn Avenue Twickenham TW2 6JU

  19/3235/PDE Submitted 22 Oct 2019 50 yards away

  Single-storey rear extension (4m depth, 3.2m eaves height, 3.2m maximum height).

  Withdrawn Prior approval Extension 5 docs
  Small domestic

• PA26/2361 Refused

  11, Waterloo Place, Richmond, TW9 1EB

  Single storey rear extension to replace existing rear extension.

  Received 6 Jul, published by the council 26 Jul 2026 Householder
• PA26/2869 Refused

  60, Castelnau, London, SW13 9EX

  Improvements to the front elevation, replacement of the coach house, replacement of the rear extensions, first and second floor rear extension and new basement excavation.

  Received 18 Aug, published by the council 23 Aug 2026 Householder
• PA26/2821 Granted

  192A, Sheen Lane, London, SW14 8LF

  Alterations to the existing dwelling, including enlarging existing window and door openings, replacement windows and doors, new rooflight openings, replacement rooflights in existing openings, rendering the external brickwork, installation of an air source heat pump, air conditioning unit and photovoltaic panels, installation of woodburner flue, removal of the brick chimney stack at roof level and replacement of a brick garden wall with a timber screen.

  Received 13 Aug, published by the council 23 Aug 2026 Householder
• PA26/2256 Refused

  36A Cambridge Park Twickenham TW1 2JU

  Erection of a detached domestic garage to serve the existing dwelling, positioned toward the front/side of the plot and associated frontage boundary alterations including replacement wall/fence/hedging treatment.

  Received 29 Jun, published by the council 23 Aug 2026 Householder
• PA26/2671 Granted

  30, The Avenue, Twickenham, TW1 1RY

  Demolition of garage, ground floor rear extension, ground floor side extension, new conservation rooflights to main roof and removal of one window.

  Received 31 Jul, published by the council 6 Aug 2026 Householder