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Get startedFlat D is a one-bedroom semi-detached house in Seaford (BN25 1DG). It has a recorded floor area of 43 m² (around 463 sq ft), construction records dating it to 1983-1990 and council tax band A. The latest certificate (March 2020) shows an E (score 53), well below the UK norm with real room to improve. Earlier certificates rated it D (February 2009); the latest reading is one band lower. Between certificates, window efficiency went from Poor to Good and lighting went from Good to Very Good; while hot-water efficiency dropped from Average to Very Poor and main heating dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 77), a 2-band jump. Main heating runs on electricity.
Sale prices here have outpaced England HPI: 3.1% per year against 0% for the wider region. On a £-per-square-foot basis, the last sale (£378/sq ft) was about 94.7% above the typical sold price in the postcode. At 43 m² it sits well below the postcode median (62 m² across 32 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Most recent transfer: October 2023 at £175,000.
Flat D sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
Flat D valuation sits well clear of the typical sold price in this postcode.
£177,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.1% per year over 14 years.
£175,000
Growth on file: 3.1% per year over 14 years.
On epc rating, Flat D runs well behind the street norm.
Price per m²
£4,070
Street avg £2,664
Floor Area
43 m²
Street avg 55 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
Rail-style transport is unusually close for this postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Martello Museum — bus stop.

Daytime· 07:00 – 23:00
49.0dB

Changes detected from historical EPC data
Heating system changed
Hot water efficiency decreased
Windows upgraded, improving insulation
Heating system upgraded to a more efficient system
Heating controls changed
Wall insulation upgraded
Roof insulation improved
Heating system changed
Heating controls upgraded for better temperature management
Hot water system changed
Roof insulation improved
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
20 October 2023Most recent
£175,000
+45.9%over 12 years12 August 2011
£119,950
+6.6%over 2 years5 May 2009
£112,500
Median price across the last 5 sales in BN25 1DG: £200,000 (2025–2022).
CO₂ Emissions
2.5 t/year
Street avg 3.1 t/year
BN25 1JL
Closest school
0.8 km
Annecy Catholic Primary School. 5 schools nearby.
Flood risk
Low
From the Environment Agency.
Night-time· 23:00 – 07:00
38.2dB
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