1 Pen Pych Close, Blaenrhondda, Treorchy, CF42 5SN
About 1 Pen Pych Close
1 Pen Pych Close is a semi-detached house in Blaenrhondda, Treorchy, Treorchy (CF42 5SN). It has a recorded floor area of 82 m² (around 883 sq ft), construction records dating it to 1967-1975 and council tax band A. The latest certificate (September 2025) shows a D (score 65), on the cusp of jumping into the C band. When first surveyed in May 2009 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Good, hot-water efficiency went from Poor to Good and lighting went from Good to Very Good; while roof efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 69).
Untraded for 17 years, with the last transfer in July 2009. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Today's modelled estimate of £124,000 sits 175.6% above the 2009 sale of £45,000. It lags the bulk of the postcode on energy efficiency (less efficient than 86% of similar EPCs).
Know exactly what you're buying at 1 Pen Pych Close
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
Cavity wall insulation installed
Heating controls upgraded for better temperature management
More low energy lighting installed
Windows upgraded, improving insulation
Wall insulation improved
Solar PV panels (35 kWp) installed
Planning history
1 Pen Pych Close has no planning applications on record.
Notable planning nearby
6applications of note in the surrounding area
We flagged 1 thing worth checking at 1 Pen Pych Close
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Signs of HMO activity in the area
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Sales history & valuation
The latest sale fell during the post-2008 dip, often a low-water mark in price comparisons.
£124,000
Modelled from EPC, postcode comparables.
£45,000
Recorded with HM Land Registry.
Sales timeline
15 July 2009Most recent
£45,000
Median price across the last 1 sales in CF42 5SN: £50,000 (2014–2014).
Nearby sales in CF42 5SN
Everything we know about 1 Pen Pych Close, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
Versus other Pen Pych Close homes
1 Pen Pych Close is notably below the street on habitable rooms.
EPC Rating
65 (D)
Street avg 82 (B)
Floor Area
82 m²
Street avg 79 m²
CO₂ Emissions
3.3 t/year
Street avg 2.7 t/year
Habitable Rooms
4 rooms
Street avg 5 rooms
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The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Bryn Henllan — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.