4 Brook Street, Blaenrhondda, Treorchy, CF42 5SG
About 4 Brook Street
4 Brook Street is a semi-detached house in Blaenrhondda, Treorchy, Treorchy (CF42 5SG). It has a recorded floor area of 109 m² (around 1173 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (June 2019) shows a D (score 62), on the cusp of jumping into the C band. When first surveyed in July 2014 the rating was E, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Average; while lighting dropped from Very Good to Good. The recommended improvements would lift it to B (score 82), a 2-band jump.
At 109 m² the property is well over the postcode median (80 m² across 20 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £142,000 sits 190.3% above the 2023 sale of £48,914. On a £-per-square-foot basis, the last sale (£42/sq ft) was about 24.6% below the postcode norm. Last sale on file: £48,914 in April 2023.
Know exactly what you're buying at 4 Brook Street
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
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Single glazing replaced with double or better glazing
Loft insulation upgraded to recommended levels
Low energy lighting percentage decreased
Heating controls upgraded for better temperature management
Planning history
4 Brook Street has no planning applications on record.
Notable planning nearby
6applications of note in the surrounding area
We flagged 1 thing worth checking at 4 Brook Street
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
30-day money-back guarantee
Sales history & valuation
4 Brook Street valuation sits well clear of the typical sold price in this postcode.
£142,000
Modelled from EPC, postcode comparables.
£48,914
Recorded with HM Land Registry.
Sales timeline
18 April 2023Most recent
£48,914
Median price across the last 5 sales in CF42 5SG: £75,000 (2024–2023).
Nearby sales in CF42 5SG
3 Brook Street, Blaenrhondda, Treorchy, CF42 5SG
Sold Oct 2024
£114,0001 Brook Street, Blaenrhondda, Treorchy, CF42 5SG
Sold Sept 2024
£98,00016 Brook Street, Blaenrhondda, Treorchy, CF42 5SG
Sold Nov 2022
£103,0007 Brook Street, Blaenrhondda, Treorchy, CF42 5SG
Sold Sept 2020
£115,00010 Brook Street, Blaenrhondda, Treorchy, CF42 5SG
Sold May 2017
£47,000
Everything we know about 4 Brook Street, 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 Brook Street homes
Habitable Rooms for 4 Brook Street runs comfortably ahead of the street norm.
Price per m²
£449
Street avg £823
Floor Area
109 m²
Street avg 86 m²
Habitable Rooms
7 rooms
Street avg 5 rooms
CO₂ Emissions
5.9 t/year
Street avg 4.6 t/year
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The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Blaenrhondda Post Office — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.