2 Blackberry Close Kettering NN16 9JQ Data via plota.co.uk

26/00148/NMA - Non-Material Amendment Refused

Proposal

(Single storey side extensions): Alteration of gable-end roof, re-size of single storey side extension and rebuild boundary Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
20 Jan 2026
✗
Refused
19 May 2026
Appeal
Not lodged

Refused on 19 May 2026 · Officer Delegated Decision · Last checked 25 Jul 2026

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
Inside the Kettering 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 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 5

Last sold for £310,000 in February 2016. Detached house, freehold.

4 February 2016£310,000
24 August 2004£247,500
6 July 2001£155,000
1 October 1999£130,000
8 December 1995£95,000

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

Building

Floor area128 m² (1,378 sq ft)
Energy ratingD (65 out of 100), could reach C
PropertyDetached house, 8 habitable rooms
Built1983 to 1990
HeatingBoiler and radiators, mains gas
WallsCavity wall, as built, insulated (assumed)

From the energy performance certificate lodged in March 2015, the latest held for this property. The building may have changed since. View the certificate

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Important details

Application type
Non-Material Amendment
Postcode
NN16 9JQ
Received
20 Jan 2026
Validated
20 Jan 2026
Ward
Kettering North
Case officer
Show
Target decision
17 Feb 2026
Decision
Refused
Decision date
19 May 2026
Decision level
Officer Delegated Decision
Applicant
Show
Agent
BRETWAY Designs

How this decision compares

Decided in 119 days from validation, 56 days slower than North Northamptonshire's median of 63 for extensions. Refused, as 13% of extensions here are.

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 →

Consultation & key dates

Alt. reference
PP-14633989
Planning Portal ref
PP-14633989
Statutory expiry
17 Feb 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

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

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.