40 Balaclava Street, St Thomas, Swansea, SA1 8BR
About 40 Balaclava Street
40 Balaclava Street is a four-bedroom end-of-terrace house in St. Thomas, Swansea, Swansea (SA1 8BR). It has a recorded floor area of 140 m² (around 1507 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (October 2013) shows an E (score 46), well below the UK norm with real room to improve. When first surveyed in January 2009 the rating was F, the property has climbed 1 band since. Between certificates, lighting went from Very Poor to Poor. The recommended improvements would lift it to C (score 72), a 2-band jump. The latest certificate is from October 2013, so improvements made since then won't be reflected.
At 140 m² the property is well over the postcode median (81 m² across 22 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 82% of similar EPCs). 4 bedrooms is on the larger side for this postcode, where 3 is the typical count. Sold March 2021 for £140,000. Across the public record there are 5 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. Across 2002–2021, sale prices on this property compounded at 5.7% per year. Today's modelled estimate of £189,000 is 35% above the 2021 sale price. One planning record on file: an extension refused in 2006.
What this property has
Inside
- Bedrooms4
- Bathrooms3
Building
- RefurbishedYes
Everything you need to know about 40 Balaclava Street
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Energy performance
40 Balaclava Street's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 24 Oct 2023
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
More low energy lighting installed
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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 40 Balaclava Street, St Thomas, Swansea, SA1 8BR
- Nov 2006ExtensionFullOutcome in report
Extension: Single storey · Rear of property
Change of use from residential (Class C3) to restaurant (Class A3) on ground floor and single storey rear extension
- Reference
- 2006/1920
Unlock 40 Balaclava Street, St Thomas, Swansea, SA1 8BR's full planning history
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- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 53 notable nearby
- What the pattern means for extending or converting here
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Sales history & valuation
Sale price has at least doubled since 2002.
£189,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.7% per year over 19 years.
£140,000
Growth on file: 5.7% per year over 19 years.
Sales timeline
12 March 2021Most recent
£140,000
+33.3%over 7 years4 December 2013
£104,995
+25.7%over 4 years2 July 2009
£83,500
-32.7%over 3 years21 December 2005
£123,995
+148.0%over 3 years8 July 2002
£50,000
Median price across the last 5 sales in SA1 8BR: £155,000 (2025–2021).
Nearby sales in SA1 8BR
36 Balaclava Street, St Thomas, Swansea, SA1 8BR
Sold Aug 2025
£165,00039a, Balaclava Street, St Thomas, Swansea, SA1 8BR
Sold Feb 2025
£155,00048 Balaclava Street, St Thomas, Swansea, SA1 8BR
Sold Jun 2021
£127,00041 Balaclava Street, St Thomas, Swansea, SA1 8BR
Sold Dec 2020
£125,00042 Balaclava Street, St Thomas, Swansea, SA1 8BR
Sold May 2019
£120,000
Versus other Balaclava Street homes
EPC Rating for 40 Balaclava Street lags the street by a wide margin.
Price per m²
£1,000
Street avg £1,088
Floor Area
140 m²
Street avg 85 m²
Habitable Rooms
8 rooms
Street avg 4 rooms
CO₂ Emissions
8.3 t/year
Street avg 3.8 t/year
Everything you need to know about 40 Balaclava 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
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
St Thomas Church — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.






