17 Aviemore Gardens Northampton NN4 9XJ Data via plota.co.uk

2025/5327/FULL - Full Planning Permission Approved

Proposal

Ground floor rear extension and front porch (part retrospective) Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
16 Dec 2025
✓
Approved
27 Feb 2026

Approved on 27 Feb 2026 · Delegated · Last checked 19 Oct 2026

Site constraints 4

Radon affected area, class 6
An estimated 30% or more of homes reach the radon action level. Indicative for the 1 km square, which takes the highest class found in it; a radon test gives the answer for a building.
From the British Geological Survey and UK Health Security Agency indicative atlas. Under building regulations, as the BRE guide BR 211 (2023) sets out, new buildings and extensions need basic radon protection from class 3 in England and Wales and from class 2 in Scotland, and full protection from class 5. The class at the site itself, from the detailed BGS map, decides which.
UKHSA radon ↗
Also on the record
Nature improvement area: Nene Valley; Inside the Northampton built-up area; Natural England's Provisional ALC map (1:250,000, 1970s) had this area as grade 3, but it predates the buildings here and the current map does not class it as farmland.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 14 October 2026. 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 2

Last sold for £300,000 in May 2015. Detached house, freehold.

20 May 2015£300,000
26 May 2000£142,500

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area116 m² (1,249 sq ft)
Energy ratingC (69 out of 100), could reach B
PropertyDetached house, 7 habitable rooms
Built1983 to 1990
HeatingBoiler and radiators, mains gas
WallsCavity wall, filled cavity

From the energy performance certificate lodged in January 2015, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Important details

Application type
Full Planning Permission
Postcode
NN4 9XJ
Received
16 Dec 2025
Validated
16 Dec 2025
Ward
Hunsbury Ward
Parish
West Hunsbury Parish Council
Target decision
27 Feb 2026
Decision
Approval
Decision date
27 Feb 2026
Decision level
Delegated
Applicant
Show
Agent
Steph Small Design

How this decision compares

Decided in 73 days from validation, 26 days faster than West Northamptonshire's median of 99 for full applications. Approved, as 90% of full applications here are.

11%decided within 8 weeks
90%approved
6%go to committee

Plota live figures for full applications decided by West Northamptonshire in the last twelve months, from validation. West Northamptonshire decision record →

Consultation & key dates

Comments by
27 Jan 2026
West Northamptonshire
Planning Authority Score
1.7/10
Poor
#280 of 296 councils
Relevant to this application:
Householder decisions

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%).

Among the slowest councils in England
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
West Northamptonshire decision statistics
Based on MHCLG data, the year to March 2026
90%
Overall approval rate
Above avg (87%) #123 of 296
93%
Householder approved
Above avg (90%) #144 of 296
18%
Decided in 8 weeks
Below avg (63%) #295 of 296
79%
Extended time limit
Above avg (41%) #295 of 296
81%
Minor dwellings approved
170 decided (1-9 homes)
83%
Major dwellings approved
24 decided (10+ homes)
86%
Change of use approved
207 decided
1,832
Total decisions
179 refused in the year to March 2026

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.