421a, Flat 4, Millbrook Road West, Southampton, SO15 0HX
About 421a
421a is a detached house in Southampton (SO15 0HX). It has a recorded floor area of 99 m² (around 1066 sq ft) and construction records dating it to 1967-1975. At 99 m² this is the largest unit on EPC record across 421a (52–99 m²). The latest certificate (July 2022) shows a C (score 75), near the top of the C band.
At 99 m² the property is well over the postcode median (53 m² across 26 EPCs), placing it in the larger end of the local stock.
Energy performance
EPC Rating
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Planning history
421a has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
421a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£262,000
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 SO15 0HX: £125,000 (2025–2021).
Nearby sales in SO15 0HX
Flat, 451 Millbrook Road West, Southampton, SO15 0HX
Sold May 2025
£290,000447 Millbrook Road West, Southampton, SO15 0HX
Sold Oct 2024
£125,000439 Millbrook Road West, Southampton, SO15 0HX
Sold Apr 2024
£100,000439a, Millbrook Road West, Southampton, SO15 0HX
Sold Jun 2022
£124,950449a, Millbrook Road West, Southampton, SO15 0HX
Sold Apr 2018
£102,500
Versus other Millbrook Road West homes
Floor Area for 421a runs comfortably ahead of the street norm.
EPC Rating
75 (C)
Street avg 61 (D)
Floor Area
99 m²
Street avg 60 m²
CO₂ Emissions
2.5 t/year
Street avg 2.9 t/year
Habitable Rooms
5 rooms
Street avg 3 rooms
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
12/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
King Georges Avenue — bus stop.
Closest school
0.5 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
51.9dB

Night-time· 23:00 – 07:00
44.6dB







