21 Highfield Avenue Cambridge Cambridgeshire CB4 2AJ

1. 20 Sep 2024

   Received by Cambridge

2. 24 Sep 2024

   Validated

   Checked as complete and ready for consideration.

3. 21 Nov 2024

   Decision issued: Granted Permission

4. 14 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

• 13 Highfield Avenue Cambridge Cambridgeshire CB4 2AJ

  26/03274/HFUL Submitted 27 Aug 2026 18m away

  93% historically approved · decision due ~22 Oct

  Single and two-storey rear extension, a two-storey side extension with associated loft conversion, and a new porch

  Awaiting decision Householder Extension Loft or dormer 11 docs
  Small domestic

• 13 Highfield Avenue Cambridge Cambridgeshire CB4 2AJ

  24/03498/HFUL Submitted 18 Sep 2024 37m away

  Part two storey, part single storey side and rear extension including parapet wall. Hip to gable roof extension with rear dormer over proposed first floor. Erection of detached garden room to rear.

  Refused Householder Extension Loft or dormer 31 docs
  Small domestic

• 3 Highfield Avenue Cambridge CB4 2AJ

  21/00075/HFUL Submitted 11 Jan 2021 81m away

  Ground floor side extension with rooflight and various alterations to rear elevation.

  Granted Householder Extension Loft or dormer 15 docs
  Domestic

• 21 Leys Avenue Cambridge Cambridgeshire CB4 2AN

  22/05618/PRIOR Submitted 30 Dec 2022 154m away

  Single storey rear extension

  Granted Prior approval Extension 11 docs
  Small domestic

• 32 Leys Avenue Cambridge Cambridgeshire CB4 2AW

  26/0937/TTPO Submitted 28 Aug 2026 176m away

  96% historically approved · decision due ~23 Oct

  Birch - reduce height by 2 - 2.5m down to denser growth at centre of crown, reduce spread by 1.5 - 2m to shape round, remove deadwood throughout crown (extensive dieback and deadwood in upper crown)

  Awaiting decision Trees 4 docs

• 17 Durnford Way Cambridge Cambridgeshire CB4 2DP

  26/02711/HFUL Submitted 17 Jul 2026 194m away

  93% historically approved · decision due ~29 Sep

  Erection of single storey front and rear extensions, installation of solar photovoltaic (PV) panels to the flat roof, provision of a front garden cycle store, changes to fenestration, and alterations to external materials and finishes.

  Awaiting decision Householder Extension Windows or glazing 17 docs
  Small domestic

• 26/03284/HFUL Awaiting decision

  61 Garden Walk Cambridge Cambridgeshire CB4 3EW

  Ground floor rear/side extension and first floor side extension

  28 Aug 2026 Householder
• 26/02552/HFUL Refused

  550 Coldhams Lane Cambridge Cambridgeshire CB1 3JL

  Demolition of garage, single storey rear and side extensions and two storey side extension

  6 Jul 2026 Householder
• 26/02550/HFUL Refused

  4 Highworth Avenue Cambridge Cambridgeshire CB4 2BG

  Two storey side and front extension with associated fenestration, single storey rear extension, and roof extension including hip to gable, raising of ridge and rooflights.

  6 Jul 2026 Householder
• 26/03274/HFUL Awaiting decision

  13 Highfield Avenue Cambridge Cambridgeshire CB4 2AJ

  Single and two-storey rear extension, a two-storey side extension with associated loft conversion, and a new porch

  27 Aug 2026 Householder
• 26/02553/HFUL Granted

  7 Cranleigh Close Cambridge Cambridgeshire CB2 9NP

  Single storey rear extension, following demolition of existing conservatory. Replacement side door and sun pipe to roof.

  6 Jul 2026 Householder