18 Ocean Buildings, Bute Crescent, Cardiff, CF10 5AY
About 18 Ocean Buildings
18 Ocean Buildings is a mid-terrace house in Cardiff (CF10 5AY). It has a recorded floor area of 108 m² (around 1163 sq ft), construction records dating it to 2007-2011 and council tax band G. At 108 m² this is the largest unit on EPC record across the building (54–108 m²). The building's EPC ratings span D to B, with this unit at the top. The latest certificate (October 2025) returns a B (score 81), comfortably above the UK average. When first surveyed in July 2009 the rating was D, the property has climbed 2 bands since. Between certificates, wall efficiency went from Poor to Good, hot-water efficiency went from Poor to Average and lighting went from Very Poor to Poor. Main heating runs on electricity.
At 108 m² the property is well over the postcode median (78 m² across 27 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 70% of similar EPCs).
Everything you need to know about 18 Ocean Buildings
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
18 Ocean Buildings's carbon output is low for the local stock.
EPC Rating
Certificate validity
Valid until 14 October 2035
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
Glazing upgraded to newer, more efficient type
Wall insulation improved
More low energy lighting installed
Windows upgraded, improving insulation
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
18 Ocean Buildings has no planning applications on record.
But the area is active
5 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
18 Ocean Buildings has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£300,000
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 CF10 5AY: £195,000 (2026–2023).
Nearby sales in CF10 5AY
29 Ocean Buildings, Bute Crescent, Cardiff, CF10 5AY
Sold May 2026
£193,00017 Ocean Buildings, Bute Crescent, Cardiff, CF10 5AY
Sold May 2026
£195,0008 Ocean Buildings, Bute Crescent, Cardiff, CF10 5AY
Sold Jul 2023
£210,00014 Ocean Buildings, Bute Crescent, Cardiff, CF10 5AY
Sold May 2023
£218,00013 Ocean Buildings, Bute Crescent, Cardiff, CF10 5AY
Sold Apr 2023
£133,600
Versus other Bute Crescent homes
18 Ocean Buildings outperforms the street on floor area by a wide margin.
EPC Rating
81 (B)
Street avg 76 (C)
Floor Area
108 m²
Street avg 76 m²
CO₂ Emissions
0.7 t/year
Street avg 2.5 t/year
Habitable Rooms
4 rooms
Street avg 3 rooms
Everything you need to know about 18 Ocean Buildings
The true value, the hidden risks and the full sale history, in one report.
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
485/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Mermaid Quay — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.