11 Carmarthen Street, Cardiff, CF5 1QG
About 11 Carmarthen Street
11 Carmarthen Street is a mid-terrace house in Cardiff (CF5 1QG). It has a recorded floor area of 75 m² (around 807 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (September 2025) shows a D (score 56), a step below the typical UK home. The recommended improvements would push it to C (score 80). Main heating runs on electricity.
Most recent transfer was December 2025 at £265,000 — fresh data. Today's modelled estimate of £307,000 is 15.8% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£328/sq ft) was about 54.9% above the typical sold price in the postcode.
Everything you need to know about 11 Carmarthen Street
The true value, the hidden risks and the full sale history, in one report.
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The data behind every report
Energy performance
11 Carmarthen Street's carbon output is low for the local stock.
EPC Rating
Certificate validity
Valid until 24 September 2035
Get a survey for this property
Level 3 Building Survey
Because the property has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Planning history
11 Carmarthen Street 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
11 Carmarthen Street valuation sits well clear of the typical sold price in this postcode.
£307,000
Modelled from EPC, postcode comparables.
£265,000
Recorded with HM Land Registry.
Sales timeline
15 December 2025Most recent
£265,000
Median price across the last 5 sales in CF5 1QG: £255,000 (2022–2019).
Nearby sales in CF5 1QG
Versus other Carmarthen Street homes
11 Carmarthen Street is notably below the street on years held.
Price per m²
£3,533
Street avg £2,690
Floor Area
75 m²
Street avg 83 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
1.4 t/year
Street avg 3.9 t/year
Everything you need to know about 11 Carmarthen Street
The true value, the hidden risks and the full sale history, in one report.
Pick your report · from £14.99
One time fee only - money back guarantee
The data behind every report
Similar properties nearby
The neighbourhood at a glance
Crime
426/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.