21 Heol Y Dderwen, Llandysul, SA44 4RW
About 21 Heol Y Dderwen
21 Heol Y Dderwen is a semi-detached house in Llandysul (SA44 4RW). It has a recorded floor area of 79 m² (around 850 sq ft), construction records dating it to 1950-1966 and council tax band C. The latest certificate (April 2015) shows an E (score 47), well below the UK norm with real room to improve. The recommended improvements would lift it to A (score 98), a 4-band jump. Main heating runs on oil. The latest certificate is from April 2015, so improvements made since then won't be reflected.
Today's modelled estimate of £181,000 is 39.2% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£153/sq ft) was about 19.8% above the typical sold price in the postcode. Last sold in October 2015, so it's been off the market for around 11 years.
Know exactly what you're buying at 21 Heol Y Dderwen
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
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 16 Apr 2025
EPC Rating
Planning history
21 Heol Y Dderwen has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
21 Heol Y Dderwen valuation sits well clear of the typical sold price in this postcode.
£181,000
Modelled from EPC, postcode comparables.
£130,000
Recorded with HM Land Registry.
Sales timeline
14 October 2015Most recent
£130,000
Median price across the last 5 sales in SA44 4RW: £187,000 (2025–2022).
Nearby sales in SA44 4RW
7 Heol Y Dderwen, Llandysul, SA44 4RW
Sold Apr 2025
£180,00019 Heol Y Dderwen, Llandysul, SA44 4RW
Sold Sept 2024
£187,00017 Heol Y Dderwen, Llandysul, SA44 4RW
Sold Dec 2023
£205,00016 Heol Y Dderwen, Llandysul, SA44 4RW
Sold Nov 2023
£174,000Brynawel, Heol Y Dderwen, Llandysul, SA44 4RW
Sold Nov 2022
£270,000
Everything we know about 21 Heol Y Dderwen, 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 Heol Y Dderwen homes
21 Heol Y Dderwen outperforms the street on years held by a wide margin.
Price per m²
£1,646
Street avg £1,943
Floor Area
79 m²
Street avg 82 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
5.5 t/year
Street avg 5.5 t/year
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The neighbourhood at a glance
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Tan y Bryn — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.