15a, Millbrook Street, Plasmarl, Swansea, SA6 8JY
About 15a
15a is an end-of-terrace house in Plasmarl, Swansea, Swansea (SA6 8JY). It has a recorded floor area of 43 m² (around 463 sq ft), construction records dating it to 1900-1929 and council tax band A. At 43 m² this is the smallest unit on EPC record across the building (43–116 m²). The building's EPC ratings span F to C, with this unit at the top. The latest certificate (July 2024) shows a C (score 69), just inside the C band. When first surveyed in September 2009 the rating was D, the property has climbed 1 band since. Between certificates, lighting went from Good to Very Good; while window efficiency dropped from Good to Average and main heating dropped from Very Good to Good.
At 43 m² it sits well below the postcode median (75 m² across 23 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 87% of similar EPCs).
Energy performance
EPC Rating
Certificate validity
Valid until 24 July 2034
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has been extended more than once, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
15a has no planning applications on record.
But the area is active
5 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
15a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£135,000
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 SA6 8JY: £106,500 (2025–2022).
Nearby sales in SA6 8JY
17 Millbrook Street, Plasmarl, Swansea, SA6 8JY
Sold Jun 2025
£100,00027 Millbrook Street, Plasmarl, Swansea, SA6 8JY
Sold Sept 2023
£97,5009 Millbrook Street, Plasmarl, Swansea, SA6 8JY
Sold Jan 2023
£106,50019 Millbrook Street, Plasmarl, Swansea, SA6 8JY
Sold Nov 2022
£125,00013 Millbrook Street, Plasmarl, Swansea, SA6 8JY
Sold Jan 2022
£112,000
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The neighbourhood at a glance
Crime
210/mo
Falling year-on-year across the wider district.
Nearest stop
0.2 km
Castle Stores — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







