According to data from HM Land Registry, 18, St. Mellons Road, Cardiff sits on a plot of 405 m².

We have plot size data on 28 out of 42 other houses in the postcode and 18, St. Mellons Road, Cardiff sits on the 18th largest plot.

18, St. Mellons Road, Cardiff has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 05 May 2025.

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, 18, St. Mellons Road, Cardiff was last sold on 1st August 2025 for £295,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since August 2025, the market for similar properties has dropped by 1.2%.

• Sold Aug 2025£295,000

According to the Land Registry and our network of Estate Agents, there have been 117 sales of properties similar to 18, St. Mellons Road, Cardiff within a radius of 1.8 kilometres since 2007.

The most recent example is 3, Marysfield Close, Cardiff, CF3 2TY, a freehold house which sold for £250,000 on the 2nd April 2026.

Read more about house prices in CF3.

• Sold Apr 2026£250,000 | 3 Bed House3, Marysfield Close, Cardiff, CF3 2TY3, Marysfield Close, Cardiff, CF3 2TY
• Sold Mar 2025£315,000 | 3 Bed House51, Mallards Reach, Cardiff, CF3 2NN51, Mallards Reach, Cardiff, CF3 2NN
• Sold Aug 2024£350,000 | 3 Bed House52, Mallards Reach, Cardiff, CF3 2PR52, Mallards Reach, Cardiff, CF3 2PR
• Sold Sep 2023£312,500 | 3 Bed House82, Mallards Reach, Cardiff, CF3 2PR82, Mallards Reach, Cardiff, CF3 2PR
• Sold Jun 2023£300,000 | 3 Bed House3, Blacktown Gardens, Cardiff, CF3 2SF3, Blacktown Gardens, Cardiff, CF3 2SF
• Sold Jan 2023£330,000 | 3 Bed House14, St. Mellons Road, Cardiff, CF3 2TX14, St. Mellons Road, Cardiff, CF3 2TX
• Sold May 2022£292,000 | 3 Bed House78, Mallards Reach, Cardiff, CF3 2PR78, Mallards Reach, Cardiff, CF3 2PR
• Sold Dec 2021£295,000 | 3 Bed House80, Mallards Reach, Cardiff, CF3 2PR80, Mallards Reach, Cardiff, CF3 2PR
• Sold Jul 2021£320,000 | 3 Bed House20, The Meadows, Cardiff, CF3 2AY20, The Meadows, Cardiff, CF3 2AY
• Sold Apr 2021£275,000 | 3 Bed House27, Cambrian Drive, Cardiff, CF3 2TE27, Cambrian Drive, Cardiff, CF3 2TE
• Sold Dec 2020£237,500 | 3 Bed House12, Marysfield Close, Cardiff, CF3 2TY12, Marysfield Close, Cardiff, CF3 2TY
• Sold Jul 2020£200,000 | 3 Bed House17, Marysfield Close, Cardiff, CF3 2TY17, Marysfield Close, Cardiff, CF3 2TY
• Sold Nov 2019£260,000 | 3 Bed House14, Blacktown Gardens, Cardiff, CF3 2SF14, Blacktown Gardens, Cardiff, CF3 2SF
• Sold Oct 2019£250,000 | 3 Bed House37, Mallards Reach, Cardiff, CF3 2NN37, Mallards Reach, Cardiff, CF3 2NN
• Sold Jun 2018£238,500 | 3 Bed House28, St. Mellons Road, Cardiff, CF3 2TX28, St. Mellons Road, Cardiff, CF3 2TX
• Sold Feb 2018£234,500 | 3 Bed House8, Blacktown Gardens, Cardiff, CF3 2SF8, Blacktown Gardens, Cardiff, CF3 2SF
• Sold Sep 2017£240,000 | 3 Bed House16, St. Mellons Road, Cardiff, CF3 2TX16, St. Mellons Road, Cardiff, CF3 2TX
• Sold May 2017£197,500 | 3 Bed House180, Marshfield Road, Cardiff, CF3 2UH180, Marshfield Road, Cardiff, CF3 2UH
• Sold Dec 2016£247,000 | 3 Bed House124, Marshfield Road, Cardiff, CF3 2TU124, Marshfield Road, Cardiff, CF3 2TU
• Sold Jul 2007£150,000 | 3 Bed House24, Marysfield Close, Cardiff, CF3 2TY24, Marysfield Close, Cardiff, CF3 2TY

St. Mellons Road, Marshfield, Cardiff, CF3 has a total of 42 addresses. According to our analysis of all the public data, 18, St. Mellons Road, Cardiff is the 41st largest and the 35th most expensive property on the street.

When compared to the postcode district it is £44k more expensive than the average property in CF3.

• Pye Corner

  |

  5.8 km away
• Rogerstone

  |

  7.1 km away
• Llanishen

  |

  7.8 km away

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