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Get started9 Marine Crescent is a four-bedroom detached house in Seaford (BN25 1DA). It has a recorded floor area of 114 m² (around 1227 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (June 2025) shows a D (score 64), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 81), a 2-band jump. Other recorded features include a conservatory. Our model identifies extension potential, subject to local planning policy.
Held since June 2001 — that's 25 years off the open market, well above the local norm. Today's modelled estimate of £512,000 sits 170.9% above the 2001 sale of £189,000. On a £-per-square-foot basis, the last sale (£154/sq ft) was about 35.6% below the postcode norm. One planning record on file: an extension approved in 2007. Past consents include an extension and a conservatory, meaningful when judging how the property has evolved.
Recommended upgrades on file would lift this property by multiple EPC bands.
9 Marine Crescent has an approved rear extension on the planning record.
9 Marine Crescent valuation sits well clear of the typical sold price in this postcode.
£512,000
Modelled from EPC, postcode comparables.
£189,000
Recorded with HM Land Registry.
Price per m² for 9 Marine Crescent lags the street by a wide margin.
Price per m²
£1,658
Street avg £3,397
Floor Area
114 m²
Street avg 134 m²
Habitable Rooms
6 rooms
Rail-style transport is unusually close for this postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
The Steyne — bus stop.

Daytime· 07:00 – 23:00
49.8dB

Extension: Rear of property
Erection of a rear conservatory
27 June 2001Most recent
£189,000
Median price across the last 5 sales in BN25 1DA: £450,000 (2021–2016).
Street avg 6 rooms
CO₂ Emissions
4.6 t/year
Street avg 3.3 t/year
BN25 1BH
Closest school
0.6 km
Annecy Catholic Primary School. 5 schools nearby.
Flood risk
Medium
From the Environment Agency.
Night-time· 23:00 – 07:00
39.3dB
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