1a, Brook Street, Treorchy, CF42 6PS
About 1a
1a is a two-bedroom detached house in Treorchy (CF42 6PS). It has a recorded floor area of 51 m² (around 549 sq ft), construction records dating it to 1950-1966 and council tax band A. The latest certificate (April 2025) shows a C (score 72). When first surveyed in July 2010 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Poor to Good; while window efficiency dropped from Good to Average. The recommended improvements would push it to B (score 90).
Across 2008–2025, sale prices on this property compounded at -3.7% per year. Today's modelled estimate of £120,000 sits 220% above the 2025 sale of £37,500. Most recent transfer was April 2025 at £37,500 — fresh data. Across the public record there are 4 sales, relatively high churn for a single property. At 51 m² it's 22.7% smaller than the typical home in the postcode (66 m² median across 9 EPCs). Its energy rating outperforms most of the postcode (better than 78% of similar EPCs). One historical planning record sits against the property in 2001.
Know exactly what you're buying at 1a
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
- Bedrooms2
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
Heating controls upgraded for better temperature management
Window efficiency improved
Wall insulation improved
Roof insulation improved
Low energy lighting percentage decreased
Wall insulation improved
Loft insulation upgraded to recommended levels
Planning history
- Mar 2001Change Of UseFullIn report
CHANGE OF USE FROM BUILDERS WORKSHOP TO A CHAPEL OF REST.
- Reference
- 00/6464/10
What's in 1a, Brook Street, Treorchy, CF42 6PS's planning history?
Refusals, disputes and full decisions on this property and nearby, in the report.
Sales history & valuation
1a's sale-price growth has lagged the wider UK trajectory across its history on file.
£120,000
Modelled from EPC, postcode comparables and a sale-price growth of -3.7% per year over 17 years.
£37,500
Growth on file: -3.7% per year over 17 years.
Sales timeline
15 April 2025Most recent
£37,500
-10.7%over 6 years22 April 2018
£42,000
-23.6%over 1 year28 September 2016
£55,000
-21.4%over 8 years7 August 2008
£70,000
Median price across the last 5 sales in CF42 6PS: £64,750 (2025–2014).
Everything we know about 1a, 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 Brook Street homes
On floor area, 1a runs well behind the street norm.
Price per m²
£735
Street avg £814
Floor Area
51 m²
Street avg 70 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
2.4 t/year
Street avg 4.5 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Troerchy Post Office — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.