15, Colly Row, Treharris has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 10 Dec 2025.

The property is connected to mains gas and has high performance glazing. It is heated using a boiler and radiators (mains gas).

The most recent sale of 15, Colly Row, Treharris completed on 1st April 2026 at £127,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 this is the property's only sale.

Values of comparable properties have risen by 12.8% over the period since April 2026.

• Sold Apr 2026£127,000

Since 2011 63 properties similar to 15, Colly Row, Treharris have sold within a radius of 2.1 kilometres, per the Land Registry and our network of Estate Agents.

The latest, on the 7th January 2026, was 2, George Street, Treharris, CF46 6RT, a freehold house which sold for £105,000.

Read more about house prices in CF46.

• Sold Jan 2026£105,000 | 3 Bed House2, George Street, Treharris, CF46 6RT2, George Street, Treharris, CF46 6RT
• Sold Dec 2025£122,500 | 2 Bed House24, Glantaff Road, Merthyr Tydfil, CF48 4EH24, Glantaff Road, Merthyr Tydfil, CF48 4EH
• Sold Nov 2025£125,000 | 3 Bed House57, Wyndham Street, Merthyr Tydfil, CF48 4JY57, Wyndham Street, Merthyr Tydfil, CF48 4JY
• Sold Jul 2025£92,500 | 3 Bed House20, Lower Mount Pleasant, Merthyr Tydfil, CF48 4LT20, Lower Mount Pleasant, Merthyr Tydfil, CF48 4LT
• Sold Dec 2024£7,500 | 3 Bed House13A, High Street, Treharris, CF46 6TG13A, High Street, Treharris, CF46 6TG
• Sold Nov 2024£80,000 | 3 Bed House46, Hylton Terrace, Treharris, CF46 6RG46, Hylton Terrace, Treharris, CF46 6RG
• Sold Nov 2024£72,500 | 3 Bed House24, High Street, Treharris, CF46 6RP24, High Street, Treharris, CF46 6RP
• Sold Jan 2024£83,000 | 3 Bed House33, High Street, Treharris, CF46 6RP33, High Street, Treharris, CF46 6RP
• Sold Nov 2023£88,000 | 3 Bed House25, Powell Street, Treharris, CF46 6RL25, Powell Street, Treharris, CF46 6RL
• Sold Jun 2023£80,000 | 3 Bed House10, Lower Mount Pleasant, Merthyr Tydfil, CF48 4LT10, Lower Mount Pleasant, Merthyr Tydfil, CF48 4LT
• Sold Apr 2023£79,000 | 3 Bed House21, Colly Row, Treharris, CF46 6UD21, Colly Row, Treharris, CF46 6UD
• Sold Dec 2022£105,000 | 3 Bed House4, Chapel Street, Treharris, CF46 6TS4, Chapel Street, Treharris, CF46 6TS
• Sold Apr 2022£85,000 | 3 Bed House22, Colly Row, Treharris, CF46 6UD22, Colly Row, Treharris, CF46 6UD
• Sold Apr 2021£48,500 | 3 Bed House30, High Street, Treharris, CF46 6RP30, High Street, Treharris, CF46 6RP
• Sold Nov 2020£60,000 | 3 Bed House10, George Street, Treharris, CF46 6RT10, George Street, Treharris, CF46 6RT
• Sold Feb 2019£63,000 | 3 Bed House39, Hylton Terrace, Treharris, CF46 6RG39, Hylton Terrace, Treharris, CF46 6RG
• Sold Jul 2018£74,000 | 3 Bed House24, Colly Row, Treharris, CF46 6UD24, Colly Row, Treharris, CF46 6UD
• Sold Jan 2018£33,000 | 3 Bed House9, Moriah Street, Treharris, CF46 6RH9, Moriah Street, Treharris, CF46 6RH
• Sold Nov 2015£42,000 | 3 Bed House45, Hylton Terrace, Treharris, CF46 6RG45, Hylton Terrace, Treharris, CF46 6RG
• Sold Dec 2011£38,000 | 3 Bed House4, Colly Row, Treharris, CF46 6UD4, Colly Row, Treharris, CF46 6UD

Of the 25 addresses on Colly Row, Bedlinog, Treharris, CF46, 15, Colly Row, Treharris comes out as the 23rd largest and the 23rd most expensive in our analysis of the public data.

It is also £42k less expensive than the average property across the CF46 district.

• Troed-y-rhiw

  |

  2.0 km away
• Merthyr Vale

  |

  2.5 km away
• Pentre-Bach

  |

  3.6 km away

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