15 Chipsey Avenue Northampton NN1 5SE Data via plota.co.uk

Pending 2026/3404/HH

Council

West Northamptonshire 1.7/10

Date received

21 Sept 2026

Date validated

21 Sept 2026

Postcode

NN1 5SE

Description

Demolish single storey rear extension, proposed 4m single storey rear extension Data via plota.co.uk

Get alerts nearby Council site ↗

Last checked 27 Oct 2026, 11:48

Decision outlook

Plota predicts a decision between 29 Nov 2026 and 21 Dec 2026, from West Northamptonshire's recent demolitions.

Day 37 of the 56-day target. West Northamptonshire usually decides demolitions by day 78.

target

prediction

Day 3741 days to the predicted decision (day 78)

28%decided within 8 weeks

90%approved

115decided in the last year

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

Site constraints 2

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 Northampton built-up area.

Not affected

Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 27 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.

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Nearby new applications

9 Oct 2026Pending

202 Billing Road Northampton NN1 5RX

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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