Efyrnwy, High Street, Caerwys, Mold, CH7 5BB
About Efyrnwy
Efyrnwy is a four-bedroom detached house in Caerwys, Mold, Mold (CH7 5BB). It has a recorded floor area of 126 m² (around 1356 sq ft) and construction records dating it to 1983-1990. The latest certificate (December 2018) shows an F (score 31), near the bottom of the EPC scale. When first surveyed in April 2011 the rating was G, the property has climbed 1 band since. Between certificates, wall efficiency went from Average to Good, window efficiency went from Average to Good and lighting went from Very Poor to Poor. The recommended improvements would push it to E (score 49). Main heating runs on bottled lpg.
At 126 m² the property is well over the postcode median (87 m² across 14 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 79% of similar EPCs). Across 1995–2021, sale prices on this property compounded at 5% per year. Today's modelled estimate of £332,000 is 27.7% above the 2021 sale price. Most recent transfer: June 2021 at £260,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at Efyrnwy
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms4
- Bathrooms3
- EnsuiteYes
Outside
- GarageYes
Building
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Window efficiency improved
Wall insulation upgraded
Loft insulation upgraded to recommended levels
More low energy lighting installed
Planning history
Efyrnwy has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
Efyrnwy has more than tripled in price since its earliest registered sale in 1995.
£332,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.0% per year over 26 years.
£260,000
Growth on file: 5.0% per year over 26 years.
Sales timeline
28 June 2021Most recent
£260,000
+19.3%over 4 years6 October 2016
£218,000
+6.3%over 5 years15 September 2011
£205,000
-4.0%over 5 years21 December 2005
£213,500
+198.0%over 10 years20 April 1995
£71,650
Median price across the last 5 sales in CH7 5BB: £160,000 (2025–2020).
Nearby sales in CH7 5BB
3 High Street, Caerwys, Mold, CH7 5BB
Sold Apr 2025
£150,0002 High Street, Caerwys, Mold, CH7 5BB
Sold Jan 2025
£160,000Myrtle House, High Street, Caerwys, Mold, CH7 5BB
Sold May 2023
£237,500Old School House, High Street, Caerwys, Mold, CH7 5BB
Sold Dec 2020
£600,000Stoneridge, High Street, Caerwys, Mold, CH7 5BB
Sold Oct 2020
£250,000
Everything we know about Efyrnwy, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus other High Street homes
EPC Rating for Efyrnwy lags the street by a wide margin.
Price per m²
£2,063
Street avg £2,264
Floor Area
126 m²
Street avg 116 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
5.1 t/year
Street avg 6.1 t/year
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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
Caerwys Square — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.