20b, Derby Road, Southampton, SO14 0DF
About 20b
20b is a mid-terrace house in Southampton (SO14 0DF). It has a recorded floor area of 50 m² (around 538 sq ft) and construction records dating it to 1930-1949. At 50 m² this is the 2nd smallest of 10 units on EPC record in the building, where floor areas span 48–153 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (October 2019) shows a C (score 74). The rating has held steady at C across 2 certificates since September 2009. Between certificates, lighting went from Good to Very Good; while wall efficiency dropped from Good to Poor and hot-water efficiency dropped from Very Good to Good.
Held since May 2003 — that's 23 years off the open market, well above the local norm. At 50 m² it sits well below the postcode median (84 m² across 9 EPCs), making it one of the more compact homes locally. Today's modelled estimate of £216,000 is 29% above the 2003 sale price.
Energy performance
20b's carbon output is low for the local stock.
EPC Rating
Certificate validity
Valid until 28 October 2029
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Hot water efficiency decreased
More low energy lighting installed
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Planning history
20b has no planning applications on record.
But the area is active
26 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
£216,000
Modelled from EPC, postcode comparables.
£167,500
Recorded with HM Land Registry.
Sales timeline
22 May 2003Most recent
£167,500
Median price across the last 1 sales in SO14 0DF: £280,000 (2024–2024).
Nearby sales in SO14 0DF
Versus other Derby Road homes
Habitable Rooms for 20b lags the street by a wide margin.
EPC Rating
74 (C)
Street avg 72 (C)
Floor Area
50 m²
Street avg 62 m²
CO₂ Emissions
1.5 t/year
Street avg 1.9 t/year
Habitable Rooms
2 rooms
Street avg 3 rooms
Similar properties nearby
The neighbourhood at a glance
Crime
413/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Brintons Road — bus stop.
Closest school
0.3 km
St Mary's Church of England Primary School & Nursery. 31 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
56.0dB

Night-time· 23:00 – 07:00
46.5dB







