338 Windmill Avenue Kettering NN15 6PG Data via plota.co.uk

26/02164/HFUL - Householder Planning Permission Refused

Proposal

Extension of first floor over existing ground floor Data via plota.co.uk

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View original council record ↗Last checked 8 Oct 2026, 02:26

Street View

Application progress

✓

Received

3 Aug 2026

✓

Consultation

10 Aug 2026

✗

Refused

23 Sept 2026

Appeal

Not lodged

Refused on 23 Sept 2026 · Officer Delegated Decision · Last checked 24 Sept 2026

Documents 4

Site constraints 3

Radon affected area, class 5

An estimated 10 to 30% 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 Kettering built-up area.

Not affected

Outside flood zones 2 and 3 · Not green belt · No listed building at the site

Checked on 6 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 1

Last sold for £200,000 in April 2014. Detached house, freehold.

11 April 2014£200,000

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

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Important details

Council: North Northamptonshire
Application type: Householder Planning Permission
Postcode: NN15 6PG
Received: 3 Aug 2026
Validated: 3 Aug 2026
Ward: Pipers Hill
Case officer: Show
Target decision: 28 Sept 2026
Decision: Refused
Decision date: 23 Sept 2026
Decision level: Officer Delegated Decision
Applicant: Show
Agent: KR.eativ: Architects Ltd

How this decision compares

Decided in 51 days from validation, 12 days faster than North Northamptonshire's median of 63 for extensions. Refused, as 13% of extensions here are.

This one51d

Council63d

UK55d

45%decided within 8 weeks

87%approved

544decided in the last year

Plota live figures for extensions decided by North Northamptonshire in the last twelve months, from validation. North Northamptonshire decision record →

Public comments

No public comments yet.

8 neighbours consulted · Last counted 24 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference: PP-15126706
Planning Portal ref: PP-15126706
Neighbours: 10 Aug 2026
Consultation: 10 Aug 2026
Comments by: 1 Sept 2026
Statutory expiry: 28 Sept 2026
Env. assessment: No

North Northamptonshire

Planning Authority Score

1.3/10

Poor

#285 of 296 councils

Relevant to this application:

Householder decisions

North Northamptonshire is one of the slowest councils in England for householder decisions, ranking #279 out of 296. The council extends the time limit on 64% of applications - one of the highest rates in England. Expect your application to take longer than the standard deadline. Householder applications are slightly less likely to be approved here (88%) 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

North Northamptonshire decision statistics

Based on MHCLG data, the year to March 2026

88%

Overall approval rate

Above avg (87%) #157 of 296

88%

Householder approved

Below avg (90%) #220 of 296

35%

Decided in 8 weeks

Below avg (63%) #279 of 296

64%

Extended time limit

Above avg (41%) #277 of 296

74%

Minor dwellings approved

100 decided (1-9 homes)

81%

Major dwellings approved

21 decided (10+ homes)

91%

Change of use approved

75 decided

1,096

Total decisions

132 refused in the year to March 2026