18 Llys Dewi, Creigiau, Cardiff, CF15 9JY
About 18 Llys Dewi
18 Llys Dewi is a two-bedroom end-of-terrace house in Creigiau, Cardiff, Cardiff (CF15 9JY). It has a recorded floor area of 56 m² (around 603 sq ft), construction records dating it to 1983-1990 and council tax band C. The latest certificate (July 2024) shows a C (score 73). When first surveyed in May 2010 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Poor to Good, hot-water efficiency went from Average to Good and lighting went from Average to Very Good. The recommended improvements would push it to B (score 89). The home occupies a cul-de-sac position.
A recent sale: £215,000 in May 2025. Across the public record there are 4 sales, relatively high churn for a single property. Across 2006–2025, sale prices on this property compounded at 2.2% per year. On a £-per-square-foot basis, the last sale (£357/sq ft) was about 63.7% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms2
- Bathrooms1
Outside
- ParkingAllocated
- Cul-de-sacYes
Building
- RefurbishedYes
Energy performance
EPC Rating
Certificate validity
Valid until 16 July 2034
Property Improvements
Changes detected from historical EPC data
Roof insulation improved
Heating controls upgraded for better temperature management
Hot water efficiency improved
Window efficiency improved
More low energy lighting installed
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Planning history
18 Llys Dewi has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
18 Llys Dewi valuation sits well clear of the typical sold price in this postcode.
£231,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.2% per year over 19 years.
£215,000
Growth on file: 2.2% per year over 19 years.
Sales timeline
15 May 2025Most recent
£215,000
+16.2%over 2 years16 December 2022
£185,000
+34.1%over 10 years30 August 2012
£138,000
-2.8%over 6 years17 August 2006
£142,000
Median price across the last 5 sales in CF15 9JY: £195,000 (2025–2022).
Nearby sales in CF15 9JY
16 Llys Dewi, Creigiau, Cardiff, CF15 9JY
Sold Jan 2025
£235,00017 Llys Dewi, Creigiau, Cardiff, CF15 9JY
Sold Dec 2024
£187,50029 Llys Dewi, Creigiau, Cardiff, CF15 9JY
Sold May 2024
£258,00022 Llys Dewi, Creigiau, Cardiff, CF15 9JY
Sold Sept 2022
£195,00026 Llys Dewi, Creigiau, Cardiff, CF15 9JY
Sold Aug 2022
£184,000
Versus other Llys Dewi homes
On years held, 18 Llys Dewi runs well behind the street norm.
Price per m²
£3,839
Street avg £2,914
Floor Area
56 m²
Street avg 59 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
1.9 t/year
Street avg 2.7 t/year
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The neighbourhood at a glance
Crime
85/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Llys Gwynno — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







