1a, Castleshaw Close, Southampton, SO16 4QP
About 1a
1a is an end-of-terrace house in Southampton (SO16 4QP). It has a recorded floor area of 42 m² (around 452 sq ft), construction records dating it to 1950-1966 and council tax band A. At 42 m² this is the 2nd smallest of 7 units on EPC record in the building, where floor areas span 36–127 m². The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (64 versus a best of 76). The latest certificate (June 2026) shows a D (score 64), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since March 2011. Between certificates, roof efficiency went from Good to Very Good, hot-water efficiency went from Poor to Good and main heating went from Poor to Average; while window efficiency dropped from Average to Poor and lighting dropped from Good to Very Poor. The recommended improvements would push it to C (score 69). Main heating runs on electricity. This certificate was lodged in the last six months, so the rating reflects current condition.
At 42 m² it sits well below the postcode median (66 m² across 6 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 83% of similar EPCs).
Everything you need to know about 1a
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
1a's carbon output is low for the local stock.
EPC Rating
Certificate validity
Valid until 15 June 2036
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
Loft insulation upgraded to recommended levels
Low energy lighting percentage decreased
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
1a has no planning applications on record.
But the area is active
8 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
1a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£110,000
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 4QP: £228,000 (2025–2000).
Nearby sales in SO16 4QP
6 Castleshaw Close, Southampton, SO16 4QP
Sold Jul 2025
£259,0002 Castleshaw Close, Southampton, SO16 4QP
Sold Dec 2024
£283,0005 Castleshaw Close, Southampton, SO16 4QP
Sold Oct 2018
£228,0008a, Castleshaw Close, Southampton, SO16 4QP
Sold Jun 2012
£80,7503 Castleshaw Close, Southampton, SO16 4QP
Sold Oct 1997
£55,000
Versus other Castleshaw Close homes
1a is notably below the street on epc rating.
EPC Rating
64 (D)
Street avg 73 (C)
Floor Area
42 m²
Street avg 41 m²
CO₂ Emissions
0.9 t/year
Street avg 1.3 t/year
Habitable Rooms
2 rooms
Street avg 2 rooms
Everything you need to know about 1a
The true value, the hidden risks and the full sale history, in one report.
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Similar properties nearby
The neighbourhood at a glance
Crime
536/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Cotswold Road — bus stop.
Closest school
0.2 km
Tanners Brook 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
55.5dB
Night-time· 23:00 – 07:00
46.9dB