18 Dumfries Street, Treherbert, Treorchy, CF42 5PL
About 18 Dumfries Street
18 Dumfries Street is a mid-terrace house in Treherbert, Treorchy, Treorchy (CF42 5PL). It has a recorded floor area of 85 m² (around 915 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (December 2008) shows an E (score 52), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 56). The latest certificate is from December 2008, so improvements made since then won't be reflected.
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Across 2009–2013, sale prices on this property compounded at 20.3% per year. Today's modelled estimate of £119,000 is 26.6% above the 2013 sale price. On a £-per-square-foot basis, the last sale (£103/sq ft) was about 28.4% above the typical sold price in the postcode. On the market in November 2013 and unlisted since — roughly 13 years.
Know exactly what you're buying at 18 Dumfries 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
18 Dumfries Street sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 03 Dec 2018
EPC Rating
Planning history
18 Dumfries Street has 2 separate extension applications on the council record.
- May 2012ExtensionFullIn report
Extension: Rear of property
Rear kitchen and bathroom double extension
- Documents
- 4 docs on file
- Reference
- 12/0310/10
- May 2012ExtensionFullIn report
Extension: Rear of property
Rear kitchen and bathroom double extension
- Documents
- 5 docs on file
- Reference
- 12/0310/FUL
We flagged 1 thing worth checking at 18 Dumfries 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
18 Dumfries Street has more than doubled in price since the earliest registered sale in 2009.
£119,000
Modelled from EPC, postcode comparables and a sale-price growth of 20.3% per year over 5 years.
£94,000
Growth on file: 20.3% per year over 5 years.
Sales timeline
8 November 2013Most recent
£94,000
+141.0%over 4 years5 February 2009
£39,000
Median price across the last 5 sales in CF42 5PL: £95,000 (2023–2021).
Nearby sales in CF42 5PL
4 Dumfries Street, Treherbert, Treorchy, CF42 5PL
Sold Aug 2023
£130,00012 Dumfries Street, Treherbert, Treorchy, CF42 5PL
Sold Oct 2022
£76,0007 Dumfries Street, Treherbert, Treorchy, CF42 5PL
Sold May 2022
£123,00025 Dumfries Street, Treherbert, Treorchy, CF42 5PL
Sold Sept 2021
£95,00017 Dumfries Street, Treherbert, Treorchy, CF42 5PL
Sold Apr 2021
£45,000
Everything we know about 18 Dumfries 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 Dumfries Street homes
18 Dumfries Street is notably below the street on epc rating.
Price per m²
£1,105
Street avg £901
Floor Area
85 m²
Street avg 97 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
5.6 t/year
Street avg 4.6 t/year
Similar properties nearby
1 Bryn Henllan, Blaenrhondda
CF42 5SY
1 Bryn Wyndham Terrace, Treherbert
CF42 5NG
1 Church Street, Treherbert
CF42 5PU
1 Corbett Street, Treherbert
CF42 5EL
1 Cwmsaerbren Flats, Treherbert
CF42 5LA
1 Chapel Street, Blaenrhondda
CF42 5SE
1 Abertonllwyd Street, Treherbert
CF42 5PF
1 Blaen Y Cwm Road, Blaencwm
CF42 5DG
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
0.1 km
Dunraven Hotel — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.