How much is 21 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX worth?
Estimated value — November 2026
£389,000
Likely range £311,000 – £442,000Four in five similar homes sold within their range when we tested it.
Latest recorded sale November 1997
64%
confidence
Medium
Typically within 9% of the sale price
Property details
Detached house
Swn Yr Afon · Treorchy · CF42 6NX
Energy performance
Mains Gas (Not Community) · EPC 0790-2280-0222-1609-3063 · inspected October 2026
Address
- District
- Rhondda Cynon Taff
- County
- Rhondda Cynon Taff
Value over time
- Modelled value
- Projected
- Likely range (80%)
- Today's estimate
Drawn through each of this property's recorded sales and ending at today's estimate, with the UK House Price Index for its area and property type filling in the months between. The shaded band is where four in five prices fell when we tested this line against real sales of similar homes; it widens the further a month is from a recorded sale, and today it matches the likely range above.
View as a table
| Year | Modelled value | Likely range |
|---|---|---|
| 2000 | £93,882 | £80,595 – £107,944 |
| 2001 | £108,645 | £92,361 – £124,874 |
| 2002 | £124,062 | £104,512 – £143,333 |
| 2003 | £154,284 | £128,862 – £178,673 |
| 2004 | £201,523 | £167,322 – £232,718 |
| 2005 | £211,637 | £174,769 – £244,098 |
| 2006 | £236,313 | £193,748 – £272,695 |
| 2007 | £253,188 | £205,833 – £293,097 |
| 2008 | £218,385 | £176,398 – £252,966 |
| 2009 | £213,225 | £171,269 – £248,015 |
| 2010 | £211,124 | £169,750 – £245,859 |
| 2011 | £210,091 | £168,623 – £245,614 |
| 2012 | £205,075 | £164,591 – £240,710 |
| 2013 | £206,995 | £183,776 – £222,772 |
| 2014 | £223,499 | £196,870 – £241,593 |
| 2015 | £233,009 | £203,622 – £252,977 |
| 2016 | £242,371 | £210,113 – £264,290 |
| 2017 | £259,189 | £222,885 – £283,857 |
| 2018 | £266,063 | £226,940 – £292,647 |
| 2019 | £281,672 | £238,289 – £311,150 |
| 2020 | £304,214 | £255,238 – £337,493 |
| 2021 | £338,748 | £281,850 – £377,410 |
| 2022 | £381,085 | £314,417 – £426,385 |
| 2023 | £353,752 | £289,399 – £397,479 |
| 2024 | £376,738 | £305,576 – £425,092 |
| 2025 | £387,112 | £311,290 – £438,632 |
| 2026 | £389,000 | £311,000 – £442,000 |
Sale history
Mortgage calculator
£2,088
Estimated monthly repayment
£350,100
Loan amount
£401,503
Total interest
£751,603
Total repayable
A guide only, based on a capital repayment mortgage held at a constant interest rate for the full term. Not a mortgage offer or financial advice.
Related properties
- 9 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX£268,000 · 2020£385,000
- 32 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX£235,000 · 2018£404,000
- 12 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX£235,000 · 2016£378,000
- 13 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX£220,000 · 2016£405,000
- 31 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX£210,000 · 2011£406,000
- 37 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX£210,000 · 2005£374,000
- 10 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX£137,000 · 2003£366,000
- 4 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX£145,000 · 2003£382,000
- 22 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX£96,500 · 1999£413,000
- 20 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX£83,500 · 1998£368,000
About this property
21 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX is a detached house on Swn Yr Afon in Treorchy, Rhondda Cynon Taff. Stede's estimated value for November 2026 is £389,000. Four in five similar homes sold within their likely range when tested; for this property that range is £311,000 to £442,000. It combines their price per m² applied to its floor area (50%), its own last sale brought up to date with the House Price Index (25%) and recent sales of 14 similar homes in the same postcode sector (25%). The confidence score is 64 out of 100 (medium): estimates like this one are typically within 9% of the eventual sale price.
It last sold in November 1997 for £89,500. The current estimate is 335% higher than that price. The current owner has held it for about 29 years.
Its EPC energy-efficiency rating is band D (62 out of 100). The certificate records a total floor area of 133 m² (1,432 sq ft). It was lodged in October 2026.
The modelled value is up 1% over the past year and up 18% over the past five years.
Among 10 nearby properties Stede tracks in the CF42 area, estimated values run from £366,000 to £413,000. This detached house's £389,000 sits around the middle of that range.
Common questions
How much is 21 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX worth?
Stede estimates 21 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX is worth £389,000 as of November 2026, within a likely range of £311,000 to £442,000. The estimate is generated automatically from recorded sale prices of this and similar nearby homes and the UK House Price Index, and is not a formal valuation.
When did 21 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX last sell?
It last sold in November 1997 for £89,500.
What type of property is 21 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX?
It is recorded as a Detached house on Swn Yr Afon in the CF42 postcode area.
What is the EPC rating of 21 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX?
21 Swn Yr Afon, Treorchy, Rhondda Cynon Taff, CF42 6NX has an EPC energy-efficiency rating of band D (62 out of 100). The certificate records a floor area of 133 m² (1,432 sq ft). EPC data is published by the Ministry of Housing, Communities & Local Government and reflects the most recent certificate on record.
How reliable is this estimate?
The confidence score is 64 out of 100 (medium). Tested against real sales of similar homes, estimates like this one are typically within 9% of the sale price, and four in five sold within their likely range. The figure is a data model, not a RICS valuation or Home Report, and should not be used for mortgage or legal decisions.
How does Stede calculate this estimate?
It combines their price per m² applied to its floor area (50%), its own last sale brought up to date with the House Price Index (25%) and recent sales of 14 similar homes in the same postcode sector (25%). Each piece of evidence gets the share that proved most accurate when tested against real sales of similar homes, and the same testing sets the likely range and confidence. Full detail is on the methodology page.
How we got this figure
We weighed the evidence below, giving each piece the share that proved most accurate when we tested it against real sales of similar homes. The likely range and confidence come from testing the same method against 16,524 real sales of similar homes.
- Recent price per m² in the same postcode sector, for its 133 m²£408,71950%
- Its sale in November 1997, brought up to today with the House Price Index£381,22025%
- 14 similar homes sold recently in the same postcode sector£357,47125%
Estimate £389,000, likely £311,000 – £442,000
Read the full methodology and data sources →