12 St Leonards Road Northampton NN4 8DP Data via plota.co.uk
Proposal
Proposed single-storey rear extension and associated internal alterations. Data via plota.co.uk
Application progress
Under consideration
No decision has been issued yet. Plota predicts a decision by 9 Nov 2026, from West Northamptonshire's recent extensions.
Documents 30
Statements & assessments 2
Plans & drawings 10
Application forms 2
Consultation & comments 10
Other documents 6
Site constraints 5
Checked on 6 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
Sales history 1
Last sold for £200,000 in January 2025. Other property, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Building
From the energy performance certificate lodged in July 2023, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate
Every application in West Northamptonshire - and every UK council - as a live feed, an API, or a bulk CSV export.
Other new applications on this street
Nearby new applications
120 London Road Northampton NN4 8AR
Installation of a dropped kerb.
University Of Northampton Waterside Campus University Drive Northampton NN1 5PH
Erection of an ancillary storage unit to the rear of the Engine Shed
University Of Northampton Waterside Campus University Drive Northampton NN1 5PH
Erection of an ancillary storage unit to the rear of the Engine Shed
80 St Leonards Road Northampton NN4 8DW
Conversion of dwellinghouse to 2 no. 1 bedroom flats.
Delapre Learning Centre Alton Street Northampton NN4 8EN
Erection of 3m High fence around the schools Multi Use Games Area and the instal...
Nbc Public Conveniences Cattle Market Road Northampton
Discharge of Conditions 3 (Metal Railing Details), 4 (Landscaping Scheme) and 7 ...
Important details
- Council
- West Northamptonshire
- Application type
- Full Planning Permission
- Postcode
- NN4 8DP
- Received
- 30 Jun 2026
- Validated
- 18 Aug 2026
- Ward
- Far Cotton, Delapre and Briar Hill Ward
- Parish
- Far Cotton and Delapre Community Council
- Target decision
- 30 Oct 2026
- Decision level
- Delegated
- Applicant
- Show
- Agent
- HDI Architecture
- Freehold owner
- Show
Decision outlook
Day 71 of the 56-day target. West Northamptonshire usually decides extensions by day 74.
Plota live figures for extensions decided by West Northamptonshire in the last twelve months, from validation. West Northamptonshire decision record →
Consultation & key dates
- Comments by
- 16 Oct 2026
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
West Northamptonshire is one of the slowest councils in England for householder decisions, ranking #295 out of 296. The council extends the time limit on 79% of applications - one of the highest rates in England. Expect your application to take longer than the standard deadline. Householder applications are slightly more likely to be approved here (93%) than the national average (90%).
Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.
Freehold owner: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.
Track this application
12 St Leonards Road Northampton NN4 8DP
Tracking this application
Not there in a minute? Check junk - especially Hotmail and Outlook.
Go to your dashboard →Sign in to view contact details
Applicant and case-officer names are hidden from public view for privacy. Create a free Plota account - or sign back in - and we'll show them, plus you get a dashboard for alerts and tracked applications.
Check your email
Freehold owner, on paid plans
The company that owns the freehold, from HM Land Registry's register of company-owned property, with its status, business and the companies that control it from Companies House, is shown to Plota subscribers. Plans start at £49 a month.
See paid plansAlready subscribed? Sign in with the email on your plan and this page will show it.
That's today's owners
Your plan shows up to 100 freehold owners a day on the site, and more from tomorrow. For owners in bulk, the API gives them on every record on the Pro plan and above.
See API plans
The consultation period closed on 16 Oct 2026.