12, Strathearn Avenue, Twickenham, TW2 6JU

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

• 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
• PA25/3519 Refused

  12, Strathearn Avenue, Twickenham, TW2 6JU

  First Floor Side Extension, Conversion of Garage to Habitable Accommodation, Alterations to Roof including Increase in Ridge Height and Rear Dormer, Alterations to Elevations, And All Associated Works

  Decided 1 Dec 2025 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. 5 May 2026

   Received by Richmond upon Thames

2. 26 Jul 2026

   Added to PlanIndex

3. 20 Aug 2026

   Decision issued: Granted Permission

• 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

Richmond upon Thames granted permission on 20 August 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.

This application deals with conditions on an existing permission, supplying the details a condition requires or asking to vary or remove one, without reopening the permission itself. More in our guide to planning application types.

• 12, Strathearn Avenue, Twickenham, TW2 6JU

  PA25/3519 Submitted 7 Oct 2025 50 yards away

  First Floor Side Extension, Conversion of Garage to Habitable Accommodation, Alterations to Roof including Increase in Ridge Height and Rear Dormer, Alterations to Elevations, And All Associated Works

  Refused Householder Extension Loft or dormer +1 24 docs
  Domestic

• 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

• 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

• PA26/3417 Awaiting decision

  The Manor House, Ham Street, Ham, Richmond Upon Thames, TW10 7HA

  Details pursuant to Condition 4 Part 2 and Part 3 (External Details) of planning reference PA25/4108

  Received 8 Oct, published by the council 12 Oct 2026 Conditions
• PA26/3447 Awaiting decision

  KNELLER HALL ROYAL MILITARY SCHOOL OF MUSIC KNELLER ROAD TWICKENHAM TW2 7DU

  Details pursuant to condition 5 - Sample panels of brickwork (heritage assets) of listed building consent 22/3005/LBC.

  Received 8 Oct, published by the council 12 Oct 2026 Conditions
• PA26/2656 Granted

  19, Ellerker Gardens, Richmond, TW10 6AA

  Details pursuant to conditions C6. Submitted Arboricultural details, C8. Door, C9. Stained glass window and stained glass panel of planning reference PA26/0116

  Received 30 Jul, published by the council 6 Aug 2026 Conditions
• PA26/3415 Awaiting decision

  Parkway House, Sheen Lane, London

  Details pursuant to Condition C12. Cycle Parking and Condition C15. Hard Landscaping of planning reference PA25/2106

  Received 7 Oct, published by the council 12 Oct 2026 Conditions
• PA26/3177 Granted

  2, Everdon Road, London, SW13 9AH

  Details pursuant to condition BD13A - materials of planning reference 23/0145/FUL

  Received 11 Sep, published by the council 17 Sep 2026 Conditions