HM Land Registry records the plot of land for 39, Allen Street, Mountain Ash as measuring 310 m².

That makes it the 4th largest plot in the postcode, where 25 of the 31 other houses have recorded plot data.

39, Allen Street, Mountain Ash has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 25 Mar 2013.

The property is not connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

The most recent sale of 39, Allen Street, Mountain Ash completed on 23rd April 2021 at £160,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold 3 times.

Values of comparable properties have risen by 29.8% over the period since April 2021.

• Sold Apr 2021£160,000
• Sold Jun 2016£118,000
• Sold Feb 1999£63,000

Since 2018 54 properties similar to 39, Allen Street, Mountain Ash have sold within a radius of 680 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 9th March 2026, was 59, Allen Street, Mountain Ash, CF45 4BB, a freehold house which sold for £189,998.

Read more about house prices in CF45.

• Sold Mar 2026£189,998 | 3 Bed House59, Allen Street, Mountain Ash, CF45 4BB59, Allen Street, Mountain Ash, CF45 4BB
• Sold Feb 2026£158,000 | 3 Bed House24, Richmond Road, Mountain Ash, CF45 4AN24, Richmond Road, Mountain Ash, CF45 4AN
• Sold Jul 2025£210,000 | 4 Bed House18, Richmond Road, Mountain Ash, CF45 4AN18, Richmond Road, Mountain Ash, CF45 4AN
• Sold Sep 2024£180,000 | 3 Bed House7, Campbell Terrace, Mountain Ash, CF45 4AE7, Campbell Terrace, Mountain Ash, CF45 4AE
• Sold Aug 2024£200,000 | 4 Bed House9, Harcourt Road, Mountain Ash, CF45 3PY9, Harcourt Road, Mountain Ash, CF45 3PY
• Sold Mar 2024£215,000 | 3 Bed House17, Aberffrwd Road, Mountain Ash, CF45 4AR17, Aberffrwd Road, Mountain Ash, CF45 4AR
• Sold Oct 2023£210,000 | 3 Bed House11, Fox Street, Mountain Ash, CF45 4AG11, Fox Street, Mountain Ash, CF45 4AG
• Sold Feb 2023£150,000 | 3 Bed House12, Richmond Road, Mountain Ash, CF45 4AN12, Richmond Road, Mountain Ash, CF45 4AN
• Sold Dec 2022£180,000 | 3 Bed House23, Campbell Terrace, Mountain Ash, CF45 4AE23, Campbell Terrace, Mountain Ash, CF45 4AE
• Sold Aug 2022£185,000 | 3 Bed House19, Campbell Terrace, Mountain Ash, CF45 4AE19, Campbell Terrace, Mountain Ash, CF45 4AE
• Sold Jul 2022£164,000 | 4 Bed House30, Richmond Road, Mountain Ash, CF45 4AN30, Richmond Road, Mountain Ash, CF45 4AN
• Sold Jan 2022£167,500 | 3 Bed House20, Campbell Terrace, Mountain Ash, CF45 4AE20, Campbell Terrace, Mountain Ash, CF45 4AE
• Sold Apr 2021£146,000 | 3 Bed House8, Campbell Terrace, Mountain Ash, CF45 4AE8, Campbell Terrace, Mountain Ash, CF45 4AE
• Sold Mar 2021£155,000 | 4 Bed House20, Beckett Street, Mountain Ash, CF45 4AW20, Beckett Street, Mountain Ash, CF45 4AW
• Sold Jan 2021£152,000 | 3 Bed House13, Campbell Terrace, Mountain Ash, CF45 4AE13, Campbell Terrace, Mountain Ash, CF45 4AE
• Sold Jan 2021£139,000 | 4 Bed House12, Austin Street, Mountain Ash, CF45 4AF12, Austin Street, Mountain Ash, CF45 4AF
• Sold Dec 2019£169,950 | 4 Bed House22, Campbell Terrace, Mountain Ash, CF45 4AE22, Campbell Terrace, Mountain Ash, CF45 4AE
• Sold Aug 2019£71,500 | 4 Bed House13, The Triangle, Mountain Ash, CF45 4BA13, The Triangle, Mountain Ash, CF45 4BA
• Sold Feb 2019£98,800 | 3 Bed House56, Allen Street, Mountain Ash, CF45 4BB56, Allen Street, Mountain Ash, CF45 4BB
• Sold Oct 2018£135,000 | 4 Bed House8, Austin Street, Mountain Ash, CF45 4AF8, Austin Street, Mountain Ash, CF45 4AF

Of the 63 addresses on Allen Street, Mountain Ash, CF45, 39, Allen Street, Mountain Ash comes out as the 12th largest and the 10th most expensive in our analysis of the public data.

It is also £38k more expensive than the average property across the CF45 district.

• Mountain Ash

  |

  500 m away
• Fernhill

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  1.3 km away
• Penrhiwceiber

  |

  2.1 km away

The flood risk here is rated Very Low, based on Environment Agency data.