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12 Clos Thomas, Old St Mellons, Cardiff, CF3 6YR

EPC B
Property type
Semi-detached
Floor area
94 m²
1012 sq ft
Energy rating
B
Score 84
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Overview

About 12 Clos Thomas

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

12 Clos Thomas is a semi-detached house in Old St. Mellons, Cardiff, Cardiff (CF3 6YR). It has a recorded floor area of 94 m² (around 1012 sq ft). The latest certificate (November 2020) returns a B (score 84), comfortably above the UK average. The recommended improvements would push it to A (score 94).

At 94 m² it's 20.5% larger than the typical home in the postcode (78 m² median across 44 EPCs). Today's modelled estimate of £301,000 is 33.8% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£222/sq ft) was about 25.7% below the postcode norm. Most recent transfer: November 2020 at £224,995.

Before you decide

Everything you need to know about 12 Clos Thomas

The true value, the hidden risks and the full sale history, in one report.

Larger development activity nearby

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Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

12 Clos Thomas's carbon output is low for the local stock.

Current Certificate
Nov 2020

EPC Rating

A
B
B84
C
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Very Good
CO2 Emissions
1.4 t/year
Occupancy
—

Certificate validity

Valid until 5 November 2030

4 years remaining
SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Semi-Detached HouseEPC B

We've checked 10 risk factors against the available data for this property and believe a Level 2 HomeBuyer Report could be a suitable option for you.

From £595 · Includes VAT

Planning

Planning history

Applications and permits filed against 12 Clos Thomas, Old St Mellons, Cardiff, CF3 6YR, sourced from the PlanIt planning register.

12 Clos Thomas has no planning applications on record.

1

But the area is active

1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

The latest sale landed in the post-pandemic price surge — useful context when reading the figure.

Current estimate

£301,000

Modelled from EPC, postcode comparables.

See how we calculated this
Last sold (2020)

£224,995

Recorded with HM Land Registry.

Sales timeline

  1. 30 November 2020Most recent

    £224,995

Median price across the last 5 sales in CF3 6YR: £330,000 (2026–2025).

On the street

Versus other Clos Thomas homes

Four headline reads against 44 similar houses on this street, drawn from the latest EPC and Land Registry data.

On price per m², 12 Clos Thomas runs well behind the street norm.

Price per m²

£2,394

Street avg £3,319

Strongly below

Floor Area

94 m²

Street avg 87 m²

Above

CO₂ Emissions

1.4 t/year

Street avg 1.4 t/year

On par

Years Held

6 years

Street avg 5 years

Strongly above
Before you decide

Everything you need to know about 12 Clos Thomas

The true value, the hidden risks and the full sale history, in one report.

Larger development activity nearby

Pick your report · from £14.99

One time fee only - money back guarantee

Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£302k

1 Potter Street, Old St Mellons

CF3 6AR

3 bed2 bath
£296k

1 Bridge Terrace, Michaelston Y Fedw

CF3 6YZ

3 bed
£294k

1 Druidstone House, Druidstone Road, Old St Mellons

CF3 6XF

2 bed1 bath
£311k

1 Heol Swatridge, Old St Mellons

CF3 6AP

3 bed2 bath
£280k

1 Lewis Crescent, Old St Mellons

CF3 6YQ

£278k

1 Ffordd Crabtree, Old St Mellons

CF3 6AN

£327k

1 Heol Booths, Old St Mellons

CF3 6WA

£273k

1 Rhodfa Price, Old St Mellons

CF3 6BD

Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Cardiff district page.
Full Cardiff report

Crime

242/mo

Falling year-on-year across the wider district.

Nearest stop

0.2 km

Rogers Avenue — bus stop.

Go deeper on the local area

A Local Area report breaks down crime, transport links, schools and air quality in depth.

FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 12 Clos Thomas, Old St Mellons, Cardiff, CF3 6YR. Each answer is also embedded as structured data for search engines.