23 Mayfair Avenue Twickenham TW2 7JG

1. 26 Sep 2024

   Received by Richmond upon Thames

2. 3 Oct 2024

   Validated

   Checked as complete and ready for consideration.

3. 27 Nov 2024

   Decision issued: Granted Permission

4. 23 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.

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

• 21 Mayfair Avenue Twickenham TW2 7JG

  PA26/1943 Submitted 3 Jun 2026 7m away

  HIP TO GABLE LOFT CONVERSION, ERECTION OF A REAR ROOF DORMER, PARTIAL REMOVAL OF CHIMNEY STACK, INSERTION OF TWO VELUX ROOFLIGHTS TO FRONT ROOFLSOPE AND ALTERATIONS TO FENESTRATION ON FLANK ELEVATION

  Granted Prior approval Loft or dormer Windows or glazing 16 docs

• 21 Mayfair Avenue Twickenham Richmond Upon Thames TW2 7JG

  05/2576/PS192 Submitted 23 Aug 2005 13m away

  Proposed Single Storey Rear Extension And Erection Of Garage To Rear Of Property.

  Granted Prior approval Extension 8 docs
  Small domestic

• 13 Mayfair Avenue Twickenham TW2 7JG

  19/3431/PS192 Submitted 11 Nov 2019 35m away

  Hip-to-gable loft conversion with rooflights to the front roof.

  Granted Prior approval Loft or dormer 17 docs

• 24 Mayfair Avenue Twickenham TW2 7JG

  PA26/0041 Submitted 6 Jan 2026 37m away

  Construction of a hip-to-gable loft conversion and rear dormer. Installation of rooflights. Installation of solar panels. Construction of a front porch.

  Granted Prior approval Extension Loft or dormer 12 docs
  Small domestic

• 26, Mayfair Avenue, Twickenham, TW2 7JG

  PA26/2924 Submitted 24 Aug 2026 38m away

  87% historically approved · decision due ~19 Oct

  Hip to gable loft conversion, construction of a new rear roof dormer, new rooflights to the loft and front of the property, obscure glazed window to the side elevation, new front porch.

  Awaiting decision Prior approval Extension Loft or dormer +1 7 docs
  Small domestic

• 8 Oaklands Constance Road Twickenham Richmond Upon Thames TW2 7JQ

  05/T0358/TPO Submitted 27 May 2005 40m away

  T1 - (T2) - Oak (Quercus spp.) - Cut back from property; reduce main limb back to north growing branch approximately 5'' diametre.

  Granted Trees

• PA26/2480 Granted

  14 Second Avenue Mortlake London SW14 8QE

  Single-storey rear and side infill ground floor extension, rear dormer roof extension and front rooflights

  15 Jul 2026 Householder
• PA26/2700 Granted

  4, School Road, Hampton Hill, Hampton, TW12 1QL

  Single storey rear extension and conversion of garage to habitable room.

  3 Aug 2026 Householder
• PA26/2388 Granted

  Leyborne Lodge, Leyborne Park, Kew, Richmond, TW9 3HA

  Construction of a garage, driveway extension and new pedestrian gate.

  7 Jul 2026 Householder
• PA26/2354 Granted

  48 South Worple Way East Sheen London SW14 8PB

  Erection of single storey rear infill extension & first floor rear window to be replaced.

  6 Jul 2026 Householder
• PA26/1903 Granted

  2 Lime Grove Twickenham TW1 1EL

  Demolition of existing garage and rear extension. Proposed new single storey side and rear extension to an existing single storey house, proposed new staircase and loft conversion, and insertion of rooflights into existing roof.

  2 Jun 2026 Householder