Planning application
Flat 4 91 Colwyn Road Northampton NN1 3PU
Works: Extension 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
Construction of a single storey rear extension to the existing ground floor flat
As published by the council, reference 2026/3859/FULL
Application record
- Reference
- 2026/3859/FULL
- Type
- Full Planning Permission
- Status
- 4 - Consultations Despatched (1-10)
- Received
- 27 Aug 2026
- Validated
- 25 Sep 2026
- Ward
- Castle Ward
- Parish
- Northampton Town Council
- Decision by
- Delegated
- Postcode
- NN1 3PU
Comment by 30 October 2026
The council is taking comments on this application until then. Comments go to West Northamptonshire through their own planning portal.
Site history
Applications at this address on the West Northamptonshire register
This site has had 3 applications since 2024: 1 approved, 1 refused.
-
2026/2717/LDE Granted
Flat 4 91 Colwyn Road Northampton NN1 3PU
Seeks a Certificate of Lawfulness to regularise existing use of Flat 4, 91 Colwyn Road, Northampton, as a self-contained residential flat (Use Class C3).
-
2024/5585/PNHPD Refused
Flat 4 91 Colwyn Road Northampton NN1 3PU
Ground floor single storey rear extension to flat 4. measured 4.3m deep x 3.3m wide x 3.0 max height
Timeline
Dates from the published record
-
27 Aug 2026
Received by West Northamptonshire
-
25 Sep 2026
Validated
Checked as complete and ready for consideration.
-
8 Oct 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 20 November 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
West Northamptonshire took a median of 69 days over the applications it decided in the last year.
Documents
Plans, drawings, consultee responses and the officer's report
10 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Watch members (£5 a month) open the document list from here.
Open the documentsWhat happens while it is decided
This application is with West Northamptonshire for determination, against a statutory target of eight weeks. Over the last year West Northamptonshire decided full applications in a median of 109 days. More in our guide to how long planning decisions take.
About full applications
A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
89 Colwyn Road Northampton NN1 3PU
Lawful development certificate (existing) for use of property as a HMO
Granted Lawful development 9 docs -
Merton Guest House 109 Colwyn Road Northampton NN1 3PU
Variation of condition 2 (number of occupiers) of 2024/3569/FULL (Change of use from a 6 person HMO (Use Class C4) to an 8 person HMO (Use Class SG)) to increase the number of occupiers by 2
Withdrawn Amendments 13 docs -
Merton Guest House 109 Colwyn Road Northampton NN1 3PU
House of multiple occupation - Increase in the number of occupants from 8 to 10
Granted Full applications 11 docs -
107 Colwyn Road Northampton NN1 3PU
Erection of two storey rear extension
Granted Full applications Extension 21 docs -
Warkworth House 105 Colwyn Road Northampton NN1 3PU
Lawful Development Certificate (Existing) Continued use as 5 self-contained units
Granted Lawful development 9 docs -
115 Colwyn Road Northampton NN1 3PU
Part retrospective application for two additional basement flats, extra windows to one basement flat and alterations to building lightwell. New external glazed access door to one new basement flat. Alterations to highway cross over. Bin and Bike store to the rear.
Granted Full applications New dwelling Windows or glazing 23 docs
Other full applications
In West Northamptonshire
-
2025/1917/FULL Granted
Edgcote Drive Cottages, 2 Wardington Road, Edgcote, OX17 1AG
Retrospective and proposed alterations to dwelling and associated outbuilding, including removal of unauthorised works and restoration works.
-
2026/1210/FULL Granted
23 West Cotton Close Northampton NN4 8BX
Conversion of garage into habitable room (retrospective)
-
2026/2998/FULL Granted
Jones Wholesale Cash And Carry Heathfield Way Northampton NN5 7QY
Change of use from Use Class B8 [Storage and Distribution] to Use Class B2 [General Industrial] for the production of stainless steel metal hoses and bellows assemblies.
-
2026/1074/FULL Granted
Home Farm Cottage Crick Road Watford NN6 7UE
Change of use of agricultural land to a commercial dog walking field (private hire), including erection of secure boundary fencing and creation of a new vehicular access, together with formation of gravel car parking area to serve the existing livery and associated works- retrospective
-
2026/3377/FULL Granted
The Greyhound Towcester Road Milton Malsor NN7 3AP
External alterations including new paving, a new flue, revised car parking layout, new timber posts with lanterns, and associated landscaping works.