15 Derby Street Cambridge Cambridgeshire CB3 9JE

1. 11 Nov 2024

   Received by Cambridge

2. 12 Dec 2024

   Decision issued: Certificate Granted

3. 27 Aug 2026

   Added to PlanIndex

Cambridge granted permission on 12 December 2024, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 31 Grantchester Street Cambridge Cambridgeshire CB3 9HY

  24/0947/TTCA Submitted 2 Sep 2024 50 yards away

  T1 - Norway Maple - Reduce height by approximately 3m down to previous reduction points. Reduce spread on all sides by approximately 2m T2 - Fig - Remove two low limbs growing out towards lawn. Reduce height of remaining canopy by 1 - 1.5m and shape round T3 - Holly - Fell to as close to ground level as possible

  Granted Trees 8 docs

• 29 Grantchester Street Cambridge CB3 9HY

  20/04086/NMA1 Submitted 24 May 2021 50 yards away

  Non material amendment of planning permission 20/04086/HFUL (Single storey rear and side infill extension to replace existing rear lean-to extension and existing side infill extension) Reduction in size of the proposed rear extension, omit one rooflight to the rear extension, omit one window to rear elevation and increase width of sliding patio doors to rear elevation, rooflights to side infill re-sized so both rooflights are the same length.

  Granted Amendments Extension Loft or dormer +1 9 docs
  Small domestic

• 29 Grantchester Street Cambridge CB3 9HY

  20/04086/HFUL Submitted 2 Oct 2020 50 yards away

  Single storey rear and side infill extension to replace existing rear lean-to extension and existing side infill extension.

  Granted Householder Extension
  Small domestic

• 20 Grantchester Street Cambridge Cambridgeshire CB3 9HY

  22/1327/TTPO Submitted 9 Nov 2022 50 yards away

  T1 Robinia - ongoing maintenance, the neighbour at No. 22 is continuously worried about this tree, particularly in high winds, when the branches brush upon her tiles. Re-reduce the tree to the previous points/1.5m.

  Granted Trees 7 docs

• 17 Merton Street Cambridge CB3 9JD

  20/03748/HFUL Submitted 8 Sep 2020 100 yards away

  Loft conversion

  Granted Householder Loft or dormer 16 docs
  Domestic

• 17 Merton Street Cambridge Cambridgeshire CB3 9JD

  26/03015/HFUL Submitted 10 Aug 2026 100 yards away

  Demolition of existing conservatory and replacement single storey rear/side extension.

  Granted Householder Extension Demolition 18 docs
  Small domestic

• 26/03041/CL2PD Granted

  109 St Matthews Gardens Cambridge Cambridgeshire CB1 2PH

  Certificate of lawfulness under S192 for roof extension with rear dormer and addition of 1no. rooflight to rear roof.

  Received 11 Aug, published by the council 27 Aug 2026 Lawful development
• 26/02935/CL2PD Granted

  Flats 72-109 Warren Close Cambridge Cambridgeshire CB2 1LE

  Certificate of lawfulness under S192 for replacement subframe system and cladding boards to external facades and replacement of existing timber decking.

  Received 4 Aug, published by the council 14 Aug 2026 Lawful development
• 26/02990/CL2PD Granted

  Cambridge Retail Park, Unit 11 Coldhams Lane Cambridge Cambridgeshire CB1 3HB

  Certificate of lawfulness under S192 that the proposed use of the premises for ancillary pet treatment falling within Class E(e) is lawful.

  Received 7 Aug, published by the council 14 Aug 2026 Lawful development
• 26/03721/CL2PD Awaiting decision

  23 Wulfstan Way Cambridge Cambridgeshire CB1 8QL

  Certificate of lawfulness under S192 for erection of outbuilding to rear.

  Received 1 Oct, published by the council 9 Oct 2026 Lawful development
• 26/03638/CL2PD Awaiting decision

  13 Stanesfield Road Cambridge Cambridgeshire CB5 8NH

  Certificate of lawfulness under S192 for erection of detached single storey outbuilding to rear garden.

  Received 23 Sep, published by the council 1 Oct 2026 Lawful development