26a, Carmarthen Street, Cardiff, CF5 1QG
About 26a
26a is an end-of-terrace house in Cardiff (CF5 1QG). It has a recorded floor area of 38 m² (around 409 sq ft) and construction records dating it to 1900-1929. At 38 m² this is the smallest unit on EPC record across the building (38–132 m²). The building's EPC ratings span E to C across 16 units on file. The latest certificate (July 2023) shows a D (score 63), on the cusp of jumping into the C band. When first surveyed in July 2013 the rating was F, the property has climbed 2 bands since. Between certificates, window efficiency went from Very Poor to Good, hot-water efficiency went from Very Poor to Average and lighting went from Very Poor to Very Good. The recommended improvements would push it to C (score 80). Main heating runs on electricity.
At 38 m² it sits well below the postcode median (75 m² across 15 EPCs), making it one of the more compact homes locally.
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating system changed
Changed to a more efficient fuel source
Heating controls changed
Hot water system upgraded
Single glazing replaced with double or better glazing
More low energy lighting installed
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has no mains gas supply, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
26a has no planning applications on record.
But the area is active
2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
26a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£157,000
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 CF5 1QG: £255,000 (2022–2019).
Nearby sales in CF5 1QG
Versus other Carmarthen Street homes
Floor Area for 26a lags the street by a wide margin.
EPC Rating
63 (D)
Street avg 61 (D)
Floor Area
38 m²
Street avg 49 m²
CO₂ Emissions
3.5 t/year
Street avg 3.2 t/year
Habitable Rooms
2 rooms
Street avg 3 rooms
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The neighbourhood at a glance
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Carmarthen Street — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







