99 Brook Street, Blaenrhondda, Treorchy, CF42 5SF
About 99 Brook Street
99 Brook Street is a mid-terrace house in Blaenrhondda, Treorchy, Treorchy (CF42 5SF). It has a recorded floor area of 100 m² (around 1076 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (February 2024) shows a C (score 77), near the top of the C band. When first surveyed in February 2023 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Good. The recommended improvements would push it to B (score 89).
Across 1999–2023, sale prices on this property compounded at 3.1% per year. Today's modelled estimate of £134,000 sits 106.2% above the 2023 sale of £65,000. At 100 m² it's 23.5% larger than the typical home in the postcode (81 m² median across 45 EPCs). Its energy rating outperforms most of the postcode (better than 73% of similar EPCs). Sold June 2023 for £65,000.
Know exactly what you're buying at 99 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
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Wall insulation improved
Planning history
99 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 99 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
Sale price has at least doubled since 1999.
£134,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.1% per year over 24 years.
£65,000
Growth on file: 3.1% per year over 24 years.
Sales timeline
14 June 2023Most recent
£65,000
+106.3%over 24 years10 May 1999
£31,500
Median price across the last 5 sales in CF42 5SF: £100,000 (2025–2022).
Nearby sales in CF42 5SF
95 Brook Street, Blaenrhondda, Treorchy, CF42 5SF
Sold Mar 2025
£130,00090 Brook Street, Blaenrhondda, Treorchy, CF42 5SF
Sold Nov 2024
£55,000141 Brook Street, Blaenrhondda, Treorchy, CF42 5SF
Sold Oct 2024
£127,000131 Brook Street, Blaenrhondda, Treorchy, CF42 5SF
Sold Oct 2024
£100,000114 Brook Street, Blaenrhondda, Treorchy, CF42 5SF
Sold Sept 2022
£67,000
Everything we know about 99 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 99 Brook Street runs comfortably ahead of the street norm.
Price per m²
£650
Street avg £754
Floor Area
100 m²
Street avg 86 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
3.3 t/year
Street avg 4.9 t/year
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The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Steps — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.