12 Perowne Street Cambridge Cambridgeshire CB1 2AY

1. 1 Sep 2026

   Received by Cambridge

2. 7 Sep 2026

   Validated

   Checked as complete and ready for consideration.

3. 11 Sep 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 2 November 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, against a statutory target of eight weeks. Over the last year Cambridge decided householder applications in a median of 56 days. More in our guide to how long planning decisions take.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 35 Perowne Street Cambridge CB1 2AY

  20/05217/HFUL Submitted 17 Dec 2020 29m away

  Single storey side and rear extension, rear roof extension including two dormer windows and two rooflights to the front elevation.

  Withdrawn Householder Extension Loft or dormer +1 19 docs
  Small domestic

• 19 Emery Street Cambridge Cambridgeshire CB1 2AX

  24/03025/HFUL Submitted 12 Aug 2024 59m away

  Demolition of existing rear extension and erection of a part two storey, part single storey rear extension, and associated works

  Granted Householder Extension Demolition 18 docs
  Small domestic

• 79 Mill Road Cambridge Cambridgeshire CB1 2AW

  26/0883/TTCA Submitted 17 Aug 2026 76m away

  95% historically approved · decision due ~12 Oct

  Tree A - Holly - remove the tree to ground level Tree B - Pear - remove the tree to ground level Tree C - Sycamore - remove the tree to ground level

  Awaiting decision Trees 5 docs

• 21A Emery Street Cambridge Cambridgeshire CB1 2AX

  22/04080/HFUL Submitted 14 Sep 2022 77m away

  Replacement 2-storey rear extension, ground floor extension and loft conversion.

  Granted Householder Extension Loft or dormer 25 docs
  Domestic

• 77 Mill Road Cambridge Cambridgeshire CB1 2AW

  22/04772/HFUL Submitted 31 Oct 2022 83m away

  Roof extension consisting of 2 x rear dormers.

  Granted Householder Extension Loft or dormer 18 docs
  Domestic

• 77 Mill Road Cambridge Cambridgeshire CB1 2AW

  22/04661/FUL Submitted 21 Oct 2022 83m away

  Conversion of existing single dwelling into 3no. flats

  Granted Full applications New dwelling 28 docs
  Several homes

• 26/02245/HFUL Granted

  27 Nightingale Avenue Cambridge Cambridgeshire CB1 8SG

  Removal of chimney. Refurbishment of single storey front bay window with new linked porch. Refurbishment of single storey garage including raising of roof height and installation of roof lights, with addition of lean-to fenced enclosure with glass roof for bin/bike storage and air-source heat pump to front elevation. First floor side extensions and single storey side/rear extensions. Extension of dropped kerb and move street light. Raising of ridge height and installation of solar panels and roof lights to rear and side facing roof slopes. Application of external insulated render and timber cladding, alterations to fenestration and installation of windows to ground floor side.

  15 Jun 2026 Householder
• 26/02645/HFUL Granted

  12 Guest Road Cambridge Cambridgeshire CB1 2AL

  Single storey side/rear extension. Roof extension incorporating front and rear dormers and front roof light.

  13 Jul 2026 Householder
• 26/02642/HFUL Granted

  2 Gough Way Cambridge Cambridgeshire CB3 9LN

  Proposed replacement cycle store / shed

  13 Jul 2026 Householder
• 26/02612/HFUL Granted

  40 Victoria Park Cambridge Cambridgeshire CB4 3EL

  Roof extension including rear dormer and 2no. rooflights to front.

  9 Jul 2026 Householder
• 26/02731/HFUL Granted

  44 Harding Way Cambridge Cambridgeshire CB4 3RR

  Single storey rear extension.

  17 Jul 2026 Householder