20 Alderney Close, Southampton, SO16 9QA
About 20 Alderney Close
20 Alderney Close is a two-bedroom end-of-terrace house in Southampton (SO16 9QA). It has a recorded floor area of 71 m² (around 764 sq ft), construction records dating it to 1967-1975 and council tax band B. The latest certificate (December 2024) shows a D (score 63), on the cusp of jumping into the C band. Earlier certificates rated it C (October 2009); the latest reading is one band lower. Between certificates, roof efficiency went from Poor to Average and lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Average. The recommended improvements would push it to C (score 80).
Untraded for 16 years, with the last transfer in June 2010. Across 1997–2010, sale prices on this property compounded at 9.5% per year. Today's modelled estimate of £213,000 sits 59% above the 2010 sale of £134,000. On a £-per-square-foot basis, the last sale (£175/sq ft) was about 25.3% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms2
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Roof insulation improved
More low energy lighting installed
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Level 2 HomeBuyer Report
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Planning history
20 Alderney 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
Sale price has grown by over 3x since 1997.
£213,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.5% per year over 13 years.
£134,000
Growth on file: 9.5% per year over 13 years.
Sales timeline
22 June 2010Most recent
£134,000
+22.4%over 6 years31 October 2003
£109,500
+177.2%over 6 years6 January 1997
£39,500
Median price across the last 5 sales in SO16 9QA: £195,000 (2025–2015).
Nearby sales in SO16 9QA
11 Alderney Close, Southampton, SO16 9QA
Sold Oct 2025
£245,00026 Alderney Close, Southampton, SO16 9QA
Sold Jan 2022
£195,00015 Alderney Close, Southampton, SO16 9QA
Sold Dec 2020
£195,0008 Alderney Close, Southampton, SO16 9QA
Sold Nov 2015
£155,00016 Alderney Close, Southampton, SO16 9QA
Sold May 2015
£165,000
Versus other Alderney Close homes
Habitable Rooms for 20 Alderney Close lags the street by a wide margin.
Price per m²
£1,887
Street avg £1,837
Floor Area
71 m²
Street avg 77 m²
Habitable Rooms
2 rooms
Street avg 4 rooms
CO₂ Emissions
2.9 t/year
Street avg 3.5 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
9/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Guernsey Close — bus stop.
Closest school
0.3 km
Fairisle Infant and Nursery School. 24 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
53.2dB

Night-time· 23:00 – 07:00
44.0dB







