13 Highfield Avenue Cambridge Cambridgeshire CB4 2AJ

1. 27 Aug 2026

   Received by Cambridge

2. 6 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 22 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Cambridge took a median of 52 days over the applications it decided in the last year.

This application is with Cambridge for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

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 Highfield Avenue Cambridge Cambridgeshire CB4 2AJ

  24/03551/HFUL Submitted 20 Sep 2024 18m away

  Single storey rear and single storey side extensions following demolition of existing conservatories, hip to gable and dormer loft extension, and installation of external wall insulation.

  Granted Householder Extension Loft or dormer +1 36 docs
  Small domestic

• 13 Highfield Avenue Cambridge Cambridgeshire CB4 2AJ

  24/03498/HFUL Submitted 18 Sep 2024 50m 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 95m 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 156m away

  Single storey rear extension

  Granted Prior approval Extension 11 docs
  Small domestic

• 4 Orchard Avenue Cambridge Cambridgeshire CB4 2AH

  22/02558/NMA1 Submitted 19 Dec 2022 181m away

  Non material amendment on application 22/02558/HFUL for 1 - change of position of the front brick pillar, 2- change of roof height rear extension and 3 - change of position of rear door /window

  Withdrawn Amendments Extension Windows or glazing 10 docs

• 32 Leys Avenue Cambridge Cambridgeshire CB4 2AW

  26/0937/TTPO Submitted 28 Aug 2026 182m 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

• 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
• 26/02553/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
• 26/02414/HFUL Granted

  45 Humberstone Road Cambridge Cambridgeshire CB4 1JD

  Replacement of existing rear extension with a single-storey rear/side extension, construction of rear roof dormer extension, installation of front rooflight, installation of air source heat pump and associated works.

  25 Jun 2026 Householder