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Get started12 Gainsborough Avenue is a three-bedroom semi-detached house in Worthing (BN14 8QR). It has a recorded floor area of 80 m² (around 861 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (March 2020) shows a D (score 60), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since February 2010. Between certificates, roof efficiency went from Poor to Average and lighting went from Average to Very Good; while wall efficiency dropped from Good to Average and hot-water efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 85), a 2-band jump.
Sale prices here have outpaced Worthing HPI: 13% per year against 0% for the wider region. Today's modelled estimate of £387,000 sits 66.1% above the 2013 sale of £233,000. Last sold in March 2013, so it's been off the market for around 13 years.
Recommended upgrades on file would lift this property by multiple EPC bands.
12 Gainsborough Avenue valuation sits well clear of the typical sold price in this postcode.
£387,000
Modelled from EPC, postcode comparables and a sale-price growth of 13.0% per year over 2 years.
£233,000
Growth on file: 13.0% per year over 2 years.
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Detailed AI analysis
On habitable rooms, 12 Gainsborough Avenue runs well behind the street norm.
Price per m²
£2,913
Street avg £3,643
Floor Area
80 m²
Street avg 96 m²
Habitable Rooms
4 rooms
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Leighton Avenue — bus stop.

Daytime· 07:00 – 23:00
50.6dB

Changes detected from historical EPC data
Hot water efficiency decreased
Windows upgraded, improving insulation
Roof insulation improved
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
22 March 2013Most recent
£233,000
+22.6%over 1 year20 July 2011
£190,000
Median price across the last 5 sales in BN14 8QR: £274,998 (2025–2021).
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Street avg 5 rooms
CO₂ Emissions
4.0 t/year
Street avg 4.1 t/year
BN14 8LJ
Closest school
0.3 km
Bramber Primary School. 20 schools nearby.
Night-time· 23:00 – 07:00
41.0dB