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Get started12 Byron Avenue is a four-bedroom detached house in Winchester (SO22 5AT). It has a recorded floor area of 126 m² (around 1356 sq ft), construction records dating it to 1967-1975 and council tax band E. The latest certificate (December 2014) shows a D (score 63), on the cusp of jumping into the C band. When first surveyed in July 2009 the rating was E, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Average to Good and main heating went from Average to Good; while roof efficiency dropped from Very Good to Good and lighting dropped from Very Good to Average. The recommended improvements would lift it to B (score 85), a 2-band jump. The latest certificate is from December 2014, so improvements made since then won't be reflected. Records show the property has been extended at some point in its history.
2 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension, meaningful when judging how the property has evolved. Today's modelled estimate of £682,000 is 48.3% above the 2013 sale price. On a £-per-square-foot basis, the last sale (£339/sq ft) was about 17.2% above the typical sold price in the postcode. Last sold in May 2013, so it's been off the market for around 13 years.
Recommended upgrades on file would lift this property by multiple EPC bands.
This certificate is over 10 years old and is no longer valid.Expired 19 Dec 2024
Extension: Single storey · Side of property
(HOUSEHOLDER) Demolish existing garage and replace with single storey side extension.
12 Byron Avenue valuation sits well clear of the typical sold price in this postcode.
£682,000
Modelled from EPC, postcode comparables.
£460,000
Recorded with HM Land Registry.
12 Byron Avenue is notably below the street on epc rating.
Price per m²
£3,651
Street avg £4,831
Floor Area
126 m²
Street avg 114 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km

Daytime· 07:00 – 23:00
48.5dB

Changes detected from historical EPC data
Hot water efficiency improved
Windows upgraded, improving insulation
Low energy lighting percentage decreased
Are we missing something? Tell us about home improvements to help adjust your valuation.
Extension: Single storey · Side of property
Demolish existing attached garage and build a single storey extension to the side. All external finishes to match that of the main building.(CERTIFICATE OF LAWFUL DEVELOPMENT)
31 May 2013Most recent
£460,000
Median price across the last 5 sales in SO22 5AT: £740,000 (2025–2021).
CO₂ Emissions
5.2 t/year
Street avg 3.8 t/year
SO22 5NQ
Greenhill Road — bus stop.
Closest school
0.2 km
Western Church of England Primary School. 16 schools nearby.
Night-time· 23:00 – 07:00
39.8dB
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