Planning application
26/02340/CL2PD
9 Stretten Avenue Cambridge Cambridgeshire CB4 3ES
Proposal
Certificate of lawfulness under S192 for a proposed two storey rear extension to existing detached dwelling.
As published by the council, reference 26/02340/CL2PD
Timeline
Dates from the published record
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19 Jun 2026
Received by Cambridge
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23 Jul 2026
Added to PlanIndex
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Decision
Awaiting decision
The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.
What happens while it is decided
The process from here
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.
About lawful development applications
How this application type works
A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.
Nearby applications
Within 500 metres
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22/04846/HFUL Granted
16 Harvey Goodwin Avenue Cambridge Cambridgeshire CB4 3EU
External insulation to south, east, and west walls of house.
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24/03398/S73 Granted
12 Stretten Avenue Cambridge Cambridgeshire CB4 3EP
S73 to vary conditions 2 (Approved plans) and 3 (Materials) of planning permission 17/0224/FUL (New rear/side extension, new windows & doors, new natural timber external cladding and alterations to the existing garage roof including a new green roof & rooflights) as amended by application 17/0224/NMA1 for a change of wood cladding to a grey zinc cladding and change of brickwork to Wienerberger chancery yellow multi-faced brick.
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26/0668/TTPO Awaiting decision
St Lukes House 2 Stretten Avenue Cambridge Cambridgeshire CB4 3EP
T3 - Ash - Fell Reason - Growing close to low front boundary wall Not protected by Tree Preservation Order (TPO) or Conservation Area. T1 - Plum (Overhanging car park at rear) - Remove Ivy, remove lowlimb over fence and prune back to boundary from car park. T2 - Ash (Front right hand side) - 400mm from sub station boundary - Fell and grind stump T4 - Birch - Touching wires and Low crown over path and drive - Crown lift to 3m. Prune to clear phone lines by 2m. Crown lift to 3m over footpath.
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24/02610/NMA1 Granted
37 Garden Walk Cambridge Cambridgeshire CB4 3EW
Non material amendment on application 24/02610/HFUL for changes to rear fenestration including new 'Juliet' balcony
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26/0699/TTCA Awaiting decision
23 St Lukes Street Cambridge Cambridgeshire CB4 3DA
Unknow (Shrub) - Fell one self-set tree/shrub which is located adjacent to the boundary with 139B Victoria Road Cambridge CB4 3BS and causing damage.
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26/0572/TTCA Granted
63 Garden Walk Cambridge Cambridgeshire CB4 3EW
T1- Pear- reduce in height by 0.5m to maintain in its current location. T2- Mulberry- reduce and shape by 1m to maintain in its current location.
Other lawful development applications
In Cambridge
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26/02872/CL2PD Awaiting decision
3 Montreal Road Cambridge Cambridgeshire CB1 3NP
Certificate of lawfulness under S192 for a rear roof extension with box dormer.
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26/02824/CL2PD Awaiting decision
Bailey House Block 66-89 Rustat Avenue Cambridge Cambridgeshire CB1 3PG
Certificate of lawfulness under S192 for the retention of the existing masonry outer leaf, with localised removal and reinstatement of brickwork where required to facilitate the installation of new cavity barriers and fire-stopping measures, removal of the existing weatherboard cladding system and replacement with a new non-combustible cladding build-up, including calcium silicate sheathing board, Tyvek breather membrane, non-combustible support framework, cavity barriers, fire-stopping measures, EPDM membranes and associated trims, removal of existing timber balcony decking and privacy screen boards and replacement with non-combustible composite decking and aluminium privacy screen systems. removal of existing timber screen boards to bin and cycle stores and removal of timber soffit boards to entrance canopies, with replacement non-combustible aluminium screen profiles and composite soffit boards installed and associated installation of cavity barriers and fire-stopping measures where required within the external wall construction.
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26/02825/CL2PD Awaiting decision
Bailey House Block 26-65 Rustat Avenue Cambridge Cambridgeshire CB1 3PG
Certificate of lawfulness under S192 for the retention of the existing masonry outer leaf, with localised removal and reinstatement of brickwork where required to facilitate the installation of new cavity barriers and fire-stopping measures, removal of the existing weatherboard cladding system and replacement with a new non-combustible cladding build-up, including calcium silicate sheathing board, Tyvek breather membrane, non-combustible support framework, cavity barriers, fire-stopping measures, EPDM membranes and associated trims, removal of existing timber balcony decking and privacy screen boards and replacement with non-combustible composite decking and aluminium privacy screen systems, removal of existing timber screen boards to bin and cycle stores and removal of timber soffit boards to entrance canopies, with replacement non-combustible aluminium screen profiles and composite soffit boards installed and associated installation of cavity barriers and fire-stopping measures where required within the external wall construction.
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26/02835/CL2PD Awaiting decision
Brandt House Rustat Avenue Cambridge Cambridgeshire CB1 3RQ
Certificate of lawfulness under S192 for the removal of the existing insulated render system and replacement with a new A1-rated Wetherby insulated render system.
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26/02834/CL2PD Awaiting decision
Sherman House Rustat Avenue Cambridge Cambridgeshire CB1 3RF
Certificate of lawfulness under S192 for the removal of the existing insulated render system and replacement with a new A1-rated Wetherby insulated render system.