17 Compton Street, Cardiff, CF11 6TJ
About 17 Compton Street
17 Compton Street is a mid-terrace house in Cardiff (CF11 6TJ). It has a recorded floor area of 40 m² (around 431 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (December 2024) shows an E (score 44), well below the UK norm with real room to improve. When first surveyed in January 2012 the rating was G, the property has climbed 2 bands since. Between certificates, window efficiency went from Poor to Average and lighting went from Poor to Very Good. The recommended improvements would lift it to C (score 80), a 2-band jump. Main heating runs on electricity. At 40 m² this is the 3rd smallest of 24 units on EPC record in the building, where floor areas span 32–100 m². The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (44 versus a best of 73).
At 40 m² it sits well below the postcode median (76 m² across 23 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement.
Everything you need to know about 17 Compton Street
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Energy performance
17 Compton Street sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Certificate validity
Valid until 28 December 2034
Property Improvements
Changes detected from historical EPC data
Low energy lighting percentage decreased
More low energy lighting installed
Heating controls upgraded for better temperature management
Windows upgraded, improving insulation
More low energy lighting installed
Wall insulation improved
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, has no mains gas supply, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
17 Compton Street has no planning applications on record.
But the area is active
10 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
17 Compton Street has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£122,000
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 CF11 6TJ: £225,000 (2026–2023).
Nearby sales in CF11 6TJ
Versus other Compton Street homes
17 Compton Street is notably below the street on epc rating.
EPC Rating
44 (E)
Street avg 63 (D)
Floor Area
40 m²
Street avg 37 m²
CO₂ Emissions
2.9 t/year
Street avg 2.2 t/year
Habitable Rooms
2 rooms
Street avg 2 rooms
Everything you need to know about 17 Compton Street
The true value, the hidden risks and the full sale history, in one report.
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Similar properties nearby
The neighbourhood at a glance
Crime
362/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Hereford Street — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.