12 Colwell Close, Southampton, SO16 9GW
About 12 Colwell Close
12 Colwell Close is a mid-terrace house in Southampton (SO16 9GW). It has a recorded floor area of 64 m² (around 689 sq ft), construction records dating it to 1950-1966 and council tax band A. At 64 m² this is the 11th smallest of 30 units on EPC record in the building, where floor areas span 54–198 m². The building's EPC ratings span D to C, with this unit at the top. The latest certificate (July 2026) shows a C (score 75), near the top of the C band. The rating has held steady at C across 3 certificates since April 2009. Between certificates, roof efficiency went from Average to Good and window efficiency went from Very Poor to Poor; while hot-water efficiency dropped from Very Good to Good and lighting dropped from Very Good to Good. This certificate was lodged in the last six months, so the rating reflects current condition.
Everything you need to know about 12 Colwell Close
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Energy performance
The EPC has just been inspected, so the rating reflects current condition.
EPC Rating
Certificate validity
Valid until 3 July 2036
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Single glazing replaced with double or better glazing
Heating controls changed
Roof insulation improved
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Planning history
12 Colwell Close has no planning applications on record.
But the area is active
3 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
12 Colwell Close has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£133,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in SO16 9GW: £160,000 (2026–2021).
Nearby sales in SO16 9GW
Versus other Colwell Close homes
12 Colwell Close outperforms the street on co₂ emissions by a wide margin.
EPC Rating
75 (C)
Street avg 69 (C)
Floor Area
64 m²
Street avg 68 m²
CO₂ Emissions
1.6 t/year
Street avg 2.3 t/year
Habitable Rooms
3 rooms
Street avg 3 rooms
Everything you need to know about 12 Colwell Close
The true value, the hidden risks and the full sale history, in one report.
Pick your report · from £14.99
One time fee only - money back guarantee
The data behind every report
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
536/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Kendal Avenue Shops — bus stop.
Closest school
0.4 km
Redbridge Primary School. 28 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
55.0dB
Night-time· 23:00 – 07:00
47.6dB