Planning application
17 Merton Street Cambridge Cambridgeshire CB3 9JD
Works: Extension Demolition Small domestic
Read from the description, not a valuation. How we read the register
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Demolition of existing conservatory and replacement single storey rear/side extension.
As published by the council, reference 26/03015/HFUL
Application record
- Reference
- 26/03015/HFUL
- Type
- Householder Works/Extension
- Status
- Awaiting decision
- Received
- 10 Aug 2026
- Validated
- 12 Aug 2026
- Ward
- Newnham
- Postcode
- CB3 9JD
Comment by 17 September 2026
The council is taking comments on this application until then. Have your say on Cambridge's portal.
Site history
Applications at this address on the Cambridge register
This site has had 2 applications since 2026.
-
26/02437/HFUL Withdrawn
17 Merton Street Cambridge Cambridgeshire CB3 9JD
Demolition of existing conservatory and replacement single storey rear/side extension.
Timeline
Dates from the published record
-
10 Aug 2026
Received by Cambridge
-
12 Aug 2026
Validated
Checked as complete and ready for consideration.
-
14 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 7 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.
Who's behind it
Company information only, from the register and Companies House
Agent on file, a design practice registered in Babraham
14 applications on PlanIndex · across 5 councils
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
17 documents on file for this application
- ACKNOWLEDGEMENT LETTER
- MAP OF NOTIFIED NEIGHBOURS
- SITE NOTICE
- RECEIPT
- APPLICATION VALID
- INVALID LETTER
- FEE CALCULATION
- APPLICATION FORM - NO PERSONAL INFO
- ATTACHMENT SUMMARY FROM PORTAL
- PROPOSED SECTION AND REAR ELEVATION
- BLOCK PLAN
- EXISTING ELEVATIONS
- PROPOSED GROUND AND FIRST FLOOR PLAN
- PROPOSED ELEVATIONS
- EXISTING PLANS
- DESIGN AND ACCESS STATEMENT
- LOCATION PLAN
Trade members open them from here.
Open the documentsWhat happens while it is decided
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.
About householder applications
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.
Nearby applications
Within 500 metres
-
17 Merton Street Cambridge Cambridgeshire CB3 9JD
Demolition of existing conservatory and replacement single storey rear/side extension.
Withdrawn Householder Extension Demolition 15 docsSmall domestic -
1 The Cenacle Cambridge CB3 9JS
(G1) Yew and Laurel Shrubs (on the boundary, belonging to 1 The Cenacle) - reduce in height by 1m to improve form and maintain in their current location.
Granted Trees 7 docs -
1 The Cenacle Cambridge CB3 9JS
(T1) Eucalyptus - remove to ground level. (T2) Cotoneaster - remove to ground level. The above work is due to disturbance to the patio and boundary wall as a result of these tree's roots.
Granted Trees 7 docsSmall domestic -
31 Grantchester Street Cambridge Cambridgeshire CB3 9HY
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 -
15 Derby Street Cambridge Cambridgeshire CB3 9JE
Certificate of lawfulness under S192 for the replacement of existing garden room glass roof with new tiled roof with 3 No rooflights and replacement of rear glazing and patio doors to rear elevation.
Granted Lawful development Loft or dormer Windows or glazing 10 docs -
30 Eltisley Avenue Cambridge CB3 9JG
Replacement outhouse (following demolition of existing shed)
Granted Householder Demolition 17 docsSmall domestic
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26/02431/HFUL Granted
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Attic conversion into a habitable loft space with erection of dormer and internal alterations at first floor
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26/02673/HFUL Granted
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26/02478/HFUL Granted
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Replacement roof to outbuilding in rear garden.
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26/02583/HFUL Granted
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Minor repositioning and re-orientation of the pre-existing tennis court