Blaen Y Ddol, Corwen, LL21 0EN
About Blaen Y Ddol
Blaen Y Ddol is a detached house in Corwen (LL21 0EN). It has a recorded floor area of 166 m² (around 1787 sq ft) and construction records dating it to before 1900. The latest certificate (April 2015) shows an F (score 30), near the bottom of the EPC scale. The recommended improvements would lift it to C (score 80), a 3-band jump. Main heating runs on lpg. The latest certificate is from April 2015, so improvements made since then won't be reflected.
At 166 m² the property is well over the postcode median (101 m² across 9 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 78% of similar EPCs). 4 planning records sit against the property, 4 approved, 0 refused. Past consents include an annexe, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations. Across 2018–2020, sale prices on this property compounded at 20.7% per year. Today's modelled estimate of £655,000 is 13.9% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£322/sq ft) was about 160.8% above the typical sold price in the postcode. Sold February 2020 for £575,000.
Know exactly what you're buying at Blaen Y Ddol
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
Blaen Y Ddol's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 15 Apr 2025
EPC Rating
Planning history
Blaen Y Ddol has multiple listed-building consents on file — alterations need formal heritage approval.
- Sept 2021ConditionsIn report
Manylion yr arolwg ffotograffig a gyflwynwyd mewn perthynas ag amod rhif 3 o gais cynllunio 05/2021/0111 / Details of photographic survey submitted in relation with condition number 3 of planning application 05/2021/0111
- Documents
- 6 docs on file
- Reference
- 05/2021/0857
- Jul 2021RenovationHeritageIn report
Newidiadau mewnol ac allanol i annedd gan gynnwys adfer agoriadau ffenestri a drysau, cadw ffenestri a gwaith cysylltiedig (Cais Adeilad Rhestredig) / Internal and external alterations to dwelling including the reinstatement of window and door openings, retention of window and associated works (Listed Building application)
ListedRetrospective- Documents
- 11 docs on file
- Reference
- 05/2021/0111
What's in Blaen Y Ddol, Corwen, LL21 0EN's planning history?
2 more on this property, plus refusals, disputes and full decisions nearby, in the report.
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£655,000
Modelled from EPC, postcode comparables and a sale-price growth of 20.7% per year over 2 years.
£575,000
Growth on file: 20.7% per year over 2 years.
Sales timeline
5 February 2020Most recent
£575,000
+42.0%over 1 year28 March 2018
£405,000
Median price across the last 5 sales in LL21 0EN: £170,000 (2019–2000).
Everything we know about Blaen Y Ddol, 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 the street
Blaen Y Ddol outperforms the street on floor area by a wide margin.
EPC Rating
30 (F)
Street avg 50 (E)
Floor Area
166 m²
Street avg 104 m²
CO₂ Emissions
10.0 t/year
Street avg 7.4 t/year
Habitable Rooms
9 rooms
Street avg 5 rooms
Similar properties nearby
1 Erw Wern, Berwyn Street, Llandrillo
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1 Bryn Hyfryd, Llandrillo
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1 Fron Llan, Llandrillo
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1 Cae Coed
LL21 0DA
1 Crogen Cottage, Llandrillo
LL21 0SY
1 Gwern Gwalia, Glanrafon
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1 Cefn Rhug
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1 Green Lane Flats, Green Lane
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The neighbourhood at a glance
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
1.4 km
The Druids — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.