9 East Dean Rise Seaford East Sussex BN25 3HL Data via plota.co.uk

Decided LW/25/0480
Appeal
Dismissed · 14 Jul 2026 · Written Representations · Inspectorate case 6006847 ↗
Council
Date received
7 Aug 2025
Date validated
7 Aug 2025
Postcode
BN25 3HL

Description

Detached residential annexe Data via plota.co.uk

Last checked

Site constraints 4

Public footpath about 23 m away
Matters where it crosses or adjoins the site: obstructing a path without a diversion order is an offence, and work cannot start until the order is confirmed.
Compiled from highway authority data, not the legal definitive map. A few authorities have not published, so no path shown is not proof there is none.
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
Nature recovery project: Seaford to Eastbourne: Drink-in the Downs; Inside the Seaford built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 13 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 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.

Building

Floor area77 m² (829 sq ft)
Energy ratingC (70 out of 100), could reach B
PropertySemi-detached house, 4 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsCavity wall, filled cavity

From the energy performance certificate lodged in April 2012, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Lewes
Planning Authority Score
7/10
Good
#62 of 296 councils
Relevant to this application:
Householder decisions

Lewes ranks #126 out of 296 councils for householder decision speed. Only 25% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Householder applications are slightly more likely to be approved here (94%) than the national average (90%).

Rarely extends deadlines
decisions usually arrive on time
These figures are council-wide context, not a prediction for this application. View full council performance
Lewes decision statistics
Based on MHCLG data, the year to March 2026
89%
Overall approval rate
Above avg (87%) #134 of 296
94%
Householder approved
Above avg (90%) #111 of 296
69%
Decided in 8 weeks
Above avg (63%) #126 of 296
25%
Extended time limit
Below avg (41%) #30 of 296
76%
Minor dwellings approved
63 decided (1-9 homes)
100%
Major dwellings approved
5 decided (10+ homes)
88%
Change of use approved
16 decided
394
Total decisions
42 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.