421a, Flat 7, Millbrook Road West, Southampton, SO15 0HX
About 421a
421a is a semi-detached house in Southampton (SO15 0HX). It has a recorded floor area of 55 m² (around 592 sq ft) and construction records dating it to 2003-2006. At 55 m² this is the 5th smallest of 8 units on EPC record in 421a, where floor areas span 52–99 m². The latest certificate (July 2022) shows a C (score 78), near the top of the C band.
Energy performance
421a's carbon output is low for the local stock.
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.
£164,000
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
On co₂ emissions, 421a stands well clear of the street.
EPC Rating
78 (C)
Street avg 61 (D)
Floor Area
55 m²
Street avg 62 m²
CO₂ Emissions
1.2 t/year
Street avg 3.0 t/year
Habitable Rooms
3 rooms
Street avg 3 rooms
Similar properties nearby
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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







