According to data from HM Land Registry, 20, Llanwonno Road, Mountain Ash sits on a plot of 234 m².

We have plot size data on 49 out of 58 other houses in the postcode and 20, Llanwonno Road, Mountain Ash sits on the 20th largest plot.

20, Llanwonno Road, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 26 Jun 2015.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

According to HM Land Registry, 20, Llanwonno Road, Mountain Ash was last sold on 18th September 2015 for £130,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since September 2015, the market for similar properties has risen by 163.6%.

• Sold Sep 2015£130,000
• Sold Apr 2005£70,000

According to the Land Registry and our network of Estate Agents, there have been 90 sales of properties similar to 20, Llanwonno Road, Mountain Ash within a radius of 600 metres since 2021.

The most recent example is 9, Clarence Street, Mountain Ash, CF45 3BB, a freehold house which sold for £130,000 on the 17th April 2026.

Read more about house prices in CF45.

• Sold Apr 2026£130,000 | 4 Bed House9, Clarence Street, Mountain Ash, CF45 3BB9, Clarence Street, Mountain Ash, CF45 3BB
• Sold Nov 2025£157,000 | 4 Bed House38, Aberpennar Street, Mountain Ash, CF45 3LS38, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Oct 2025£180,000 | 4 Bed House44, Ceridwen Street, Mountain Ash, CF45 3LU44, Ceridwen Street, Mountain Ash, CF45 3LU
• Sold Sep 2025£142,000 | 4 Bed House33, Kingcraft Street, Mountain Ash, CF45 3LT33, Kingcraft Street, Mountain Ash, CF45 3LT
• Sold Jul 2025£145,000 | 3 Bed House42, Coplestone Street, Mountain Ash, CF45 3LY42, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Mar 2025£86,000 | 3 Bed House23, Gwernifor Street, Mountain Ash, CF45 3NA23, Gwernifor Street, Mountain Ash, CF45 3NA
• Sold Feb 2025£100,000 | 3 Bed House10, Coplestone Street, Mountain Ash, CF45 3LY10, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Feb 2025£73,000 | 3 Bed House4, Coplestone Street, Mountain Ash, CF45 3LY4, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Nov 2024£120,000 | 3 Bed House3, Aberpennar Street, Mountain Ash, CF45 3LS3, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Nov 2024£165,000 | 3 Bed House16, Gwernifor Street, Mountain Ash, CF45 3NA16, Gwernifor Street, Mountain Ash, CF45 3NA
• Sold Oct 2024£130,000 | 4 Bed House23, Coplestone Street, Mountain Ash, CF45 3LY23, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Feb 2024£112,500 | 3 Bed House12, Coplestone Street, Mountain Ash, CF45 3LY12, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Apr 2023£140,000 | 4 Bed House1, Aberpennar Street, Mountain Ash, CF45 3LS1, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Jul 2022£124,000 | 4 Bed House16, Coplestone Street, Mountain Ash, CF45 3LY16, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Jul 2022£133,500 | 3 Bed House17, Ceridwen Street, Mountain Ash, CF45 3LU17, Ceridwen Street, Mountain Ash, CF45 3LU
• Sold Apr 2022£93,000 | 4 Bed House10, Darran Road, Mountain Ash, CF45 3HT10, Darran Road, Mountain Ash, CF45 3HT
• Sold Apr 2022£145,000 | 4 Bed House19, Aberpennar Street, Mountain Ash, CF45 3LS19, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Feb 2022£138,000 | 4 Bed House36, Coplestone Street, Mountain Ash, CF45 3LY36, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Sep 2021£145,000 | 3 Bed House28, Ceridwen Street, Mountain Ash, CF45 3LU28, Ceridwen Street, Mountain Ash, CF45 3LU
• Sold Sep 2021£129,950 | 4 Bed House17, Aberpennar Street, Mountain Ash, CF45 3LS17, Aberpennar Street, Mountain Ash, CF45 3LS

Llanwonno Road, Mountain Ash, CF45 has a total of 78 addresses. According to our analysis of all the public data, 20, Llanwonno Road, Mountain Ash is the 22nd largest and the 31st most expensive property on the street.

When compared to the postcode district it is £5k less expensive than the average property in CF45.

• Mountain Ash

  |

  500 m away
• Fernhill

  |

  1.5 km away
• Penrhiwceiber

  |

  1.6 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.