15 Hortons Lane Thrapston NN14 4LD Data via plota.co.uk

26/02863/LDP - Lawful Development - Proposed In progress

Proposal

Brick infill to existing porch, single storey brick extensions to the side and rear and pitched roof over existing garage Data via plota.co.uk

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View original council record ↗Last checked 18 Oct 2026, 05:27

Street View

Application progress

✓

Received

7 Oct 2026

✓

Validated

8 Oct 2026

Decision

Expected by 3 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision between 3 Dec 2026 and 24 Dec 2026, from North Northamptonshire's recent extensions.

Documents 1

Application forms 1

PDF Applicationformredacted Application Form · 7 Oct 2026 View ↗

All documents on the council site ↗

Site constraints 5

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 ↗

Conservation area 11 m away: Thrapston

The edge of the area; work outside it can still affect its setting.

The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.

Also on the record

9 listed buildings within 150 m; Inside the Thrapston 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 9 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 £260,000 in March 2018. Detached house, freehold.

21 March 2018£260,000

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

Building

Floor area89 m² (958 sq ft)

Energy ratingC (69 out of 100), could reach B

PropertyDetached house, 5 habitable rooms

Built1976 to 1982

HeatingBoiler and radiators, mains gas

WallsCavity wall, filled cavity

From the energy performance certificate lodged in September 2017, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council: North Northamptonshire
Application type: Lawful Development - Proposed
Postcode: NN14 4LD
Received: 7 Oct 2026
Validated: 8 Oct 2026
Ward: Thrapston
Parish: Thrapston CP
Target decision: 3 Dec 2026
Applicant: Show
Agent: sr3 design

Decision outlook

Day 11 of the 56-day target. North Northamptonshire usually decides extensions by day 63.

prediction

Day 1152 days to the predicted decision (day 63)

45%decided within 8 weeks

87%approved

561decided 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.

Last counted 16 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference: PP-15271755
Planning Portal ref: PP-15271755
Statutory expiry: 3 Dec 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

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.