15 Middleton Street, St Thomas, Swansea, SA1 8HH
About 15 Middleton Street
15 Middleton Street is a three-bedroom mid-terrace house in St. Thomas, Swansea, Swansea (SA1 8HH). It has a recorded floor area of 85 m² (around 915 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (June 2026) shows a C (score 69), just inside the C band. When first surveyed in March 2015 the rating was E, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Good; while window efficiency dropped from Average to Poor. This certificate was lodged in the last six months, so the rating reflects current condition.
On energy efficiency it sits in the top 10% of properties in this postcode. Today's modelled estimate of £139,000 sits 54.4% above the 2018 sale of £90,000. One planning record on file: HMO conversion approved in 2019. Past consents include HMO conversion, meaningful when judging how the property has evolved. Most recent transfer: December 2018 at £90,000.
What this property has
Inside
- Bedrooms3
- EnsuiteYes
- FireplaceYes
Outside
- Private gardenYes
- ParkingYes
Everything you need to know about 15 Middleton Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
15 Middleton Street ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Certificate validity
Valid until 8 June 2036
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Roof insulation improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
1 application on record at 15 Middleton Street, St Thomas, Swansea, SA1 8HH
- Aug 2019HMOFullOutcome in report
Change of use from residential (Class C3) to 3 bed HMO for 3 people (Class C4)
- Documents
- 21 docs on file
- Reference
- 2019/0500/FUL
Unlock 15 Middleton Street, St Thomas, Swansea, SA1 8HH's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 47 notable nearby
- The 21 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
15 Middleton Street valuation sits well clear of the typical sold price in this postcode.
£139,000
Modelled from EPC, postcode comparables.
£90,000
Recorded with HM Land Registry.
Sales timeline
11 December 2018Most recent
£90,000
Median price across the last 5 sales in SA1 8HH: £130,000 (2025–2023).
Nearby sales in SA1 8HH
4 Middleton Street, St Thomas, Swansea, SA1 8HH
Sold Feb 2025
£135,0006 Middleton Street, St Thomas, Swansea, SA1 8HH
Sold Dec 2024
£130,0008 Middleton Street, St Thomas, Swansea, SA1 8HH
Sold Oct 2024
£130,00023 Middleton Street, St Thomas, Swansea, SA1 8HH
Sold Aug 2023
£128,00027 Middleton Street, St Thomas, Swansea, SA1 8HH
Sold Aug 2023
£130,000
Versus other Middleton Street homes
EPC Rating for 15 Middleton Street runs comfortably ahead of the street norm.
Price per m²
£1,059
Street avg £1,065
Floor Area
85 m²
Street avg 83 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
2.7 t/year
Street avg 4.3 t/year
Everything you need to know about 15 Middleton Street
The true value, the hidden risks and the full sale history, in one report.
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The neighbourhood at a glance
Crime
580/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Wallace Road — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.






