ST CATHERINES SCHOOL, St Catherines School, Cross Deep, Twickenham, TW1 4QJ

1. 19 Dec 2025

   Received by Richmond upon Thames

2. 7 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 26 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 4 April 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Richmond upon Thames took a median of 46 days over the applications it decided in the last year.

This application is with Richmond upon Thames for determination, against a statutory target of eight weeks. Over the last year Richmond upon Thames decided full applications in a median of 74 days. More in our guide to how long planning decisions take.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• St Catherines School Cross Deep Twickenham TW1 4QJ

  22/T1064/TCA Submitted 23 Dec 2022 50 yards away

  Grounds of St. Catherine's School Front of School (front boundary) T1: Pear tree (front of school) - Fell to ground level, grind out stump Reason Dead tree height 4m & spread 4m. Reduce height to 0m & spread to 0m T5: London plane tree - Lift canopy to 6m above ground level, clear from streetlight by 3m, clear from building by 2.5m, remove major deadwood Reason Clear from building height 14m & spread 10m. Reduce height to 14m & spread to 7.5m T6: Robinia tree - Re-pollard back to old points by 2.5 to 3m Reason There is a weak union present around 3m and decay at its base height 11m & spread 6m. Reduce height to 9m & spread to 4m Playing field (Left hand Boundary) T2: Apple tree (playing field) - Fell to ground level, grind out stump Reason Dead tree height 6m & spread 4m. Reduce height to 0m & spread to 0m T10: Yew tree (overhanging car park) - Lift canopy to 2m above wall Reason Rubbing on wall height 7m & spread 5m. Reduce height to 7m & spread to 5m T3: Lilac tree (tennis court) - Fell to ground level, stump to remain Reason Dead tree height 3m & spread 2m. Reduce height to 0m & spread to 0m T4: Walnut tree (next to tennis court) - Reduce height by 1.5m height 6m & spread 5m. Reduce height to 4.5m & spread to 4.0m Reason overhanging Tennis court Playing filed (Right hand Boundary) T8: Sycamore tree - Reduce height by 4m, reduce sides by 2m to shape, remove major dead wood Reason: one sided canopy overhanging tennis courts height 10m & spread 6m. Reduce height to 7m & spread to 4m T9A,B,C: Sycamore tree x3 - Lift canopy to 6m above ground level, remove major deadwood Reason overhanging road height 10m & spread 7m. Reduce height to 10m & spread to 7m Reason for work General tree maintenance More light maintaining this tree in its current setting Clearing from building

  Granted Trees 2 docs

• 91 Popes Grove Twickenham TW1 4JT

  PA25/3224 Submitted 17 Sep 2025 50 yards away

  The removal of existing conservatory and the erection of a 4m rear extension, total height 3247mm and eaves height 2600mm, including one new set of patio doors. Substitute 1x side door for 1x window. Change to 1x side window and insertion of 1x new side window on extension.

  Granted Prior approval Extension Windows or glazing 16 docs

• The Music Building And The Lodge St Catherines School Cross Deep Twickenham

  22/3662/FUL Submitted 9 Dec 2022 50 yards away

  Demolition of existing single storey music building and extension to The Lodge. Creaton of a 2 storey/3 storey infill extension, cycle storage, air source heat pump and landscaping.

  Refused Full applications Extension Demolition 31 docs
  Small domestic

• 19 Cross Deep Gardens Twickenham Richmond Upon Thames TW1 4QZ

  05/3535/HOT Submitted 28 Nov 2005 100 yards away

  Proposed ground and first floor rear extension.

  Granted Householder Extension 15 docs
  Domestic

• 73, Popes Grove, Twickenham, TW1 4JT

  PA26/2883 Submitted 19 Aug 2026 100 yards away

  81% historically approved · decision due ~14 Oct

  Variation of condition C5 (Approved drawings) of planning reference PA25/1955; To provide further detail to the rainwater discharge strategy within the Flood Risk Assessment & SuDs Strategy and to illustrate that the associated tests have passed for infiltration into the ground

  Awaiting decision Amendments 13 docs

• 3 Cross Deep Gardens Twickenham TW1 4QZ

  PA25/4446 Submitted 15 Dec 2025 100 yards away

  Single storey rear extension

  Granted Householder Extension 13 docs
  Small domestic

• PA26/2446 Granted

  59A KEW ROAD RICHMOND TW9 2NQ

  Retrospective change of use of the ground-floor commercial unit from Sui Generis hot food takeaway use to Class E hairdressing/salon use, with no external alterations proposed.

  Received 13 Jul, published by the council 3 Aug 2026 Full applications
• PA26/2109 Granted

  Superstore (former Homebase Store), Twickenham Road, Hanworth

  Application for alterations to parking layout, installation of electric vehicle charging points, erection of new fences, minor alterations to the servicing area, landscaping, lighting, reverse vending machine and associated works

  Received 15 Jun, published by the council 13 Aug 2026 Full applications
• PA26/0428 Granted

  41 Castelnau Barnes London SW13 9RS

  Replacement of conservatory to create an extension at ground level and basement extension.

  Received 9 Feb, published by the council 13 Aug 2026 Full applications
• PA26/3395 Awaiting decision

  289, 2, Kings Ride House, Sheen Road, Richmond, TW10 5AW

  Erection of a single-storey ground-floor extension with corner glazing and rooflight, together with internal remodelling.

  Received 5 Oct, published by the council 12 Oct 2026 Full applications
• PA26/2520 Granted

  Boatrace Court 69 Mortlake High Street Mortlake London SW14 8HL

  Replace 32 roof windows in flats 8-11 at Boatrace Court.

  Received 20 Jul, published by the council 26 Jul 2026 Full applications