Thornton Farm Thornton Road Tilmanstone Deal CT14 0JN Data via plota.co.uk

Awaiting decision 26/00991

Extensions & alterations

Council

Dover 7.4/10

Date received

23 Oct 2026

Date validated

24 Oct 2026

Postcode

CT14 0JN

Description

Erection of an outbuilding for use as a home office Data via plota.co.uk

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Last checked 27 Oct 2026, 06:31

Decision outlook

Plota predicts a decision around 18 Dec 2026, from Dover's recent extensions.

Day 4 of the 56-day target. Dover usually decides extensions by day 55.

prediction

Day 452 days to the 56-day target

84%decided within 8 weeks

93%approved

314decided in the last year

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

Site constraints 4

Agricultural land, grade 3a

Best and most versatile land (grades 1, 2 and 3a). Source: the Predictive Agricultural Land Classification Map (Defra and Natural England, 2025; the Welsh Government's Predictive ALC Map 2 in Wales), a model rather than a site survey. Natural England's Provisional ALC map (1:250,000, 1970s), which most planning maps still show, had this area as grade 2. The predicted grade is Defra's current estimate; only a site survey settles it.

Where development of farmland is needed, policy prefers poorer land over the best and most versatile (grades 1, 2 and 3a). Three sources: Natural England's post-1988 field surveys, which are definitive where they exist; the Defra predictive map for England (2025) and the Welsh Government predictive map, modelled from the soil map with 3a and 3b split; and the 1970s provisional map, which planners and other services still show, coarser and with grade 3 undivided. Where the provisional and predicted grades disagree, treat the predicted grade as the current estimate and expect an application to carry its own survey.

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

1 listed building within 150 m of the postcode pin; Coalfield, development low risk area.

Not affected

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

Checked on 27 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England, the Mining Remediation Authority, 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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Dover

Planning Authority Score

7.4/10

Good

#46 of 296 councils

Relevant to this application:

Householder decisions

Dover is one of the fastest councils in England for householder decisions, ranking #28 out of 296. Householder applications are slightly more likely to be approved here (92%) than the national average (90%).

Among the fastest councils in England

for householder decisions

These figures are council-wide context, not a prediction for this application. View full council performance

Dover decision statistics

Based on MHCLG data, the year to March 2026

88%

Overall approval rate

Above avg (87%) #151 of 296

92%

Householder approved

Above avg (90%) #151 of 296

83%

Decided in 8 weeks

Above avg (63%) #28 of 296

31%

Extended time limit

Below avg (41%) #57 of 296

72%

Minor dwellings approved

105 decided (1-9 homes)

83%

Major dwellings approved

18 decided (10+ homes)

82%

Change of use approved

56 decided

772

Total decisions

89 refused in the year to March 2026