Skip to content
UK Property Looker

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

EPC B

Estimated value

£363,000

  • Since the 2025 sale (£348,000)+4%
  • Against CF3 6YR's recent median (£285,000)+27%

Newest record on this page: February 2026. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Detached
Bedrooms
3
Bathrooms
2
Floor area
90 m²
969 sq ft
Energy rating
B
Score 82
Get directions (opens in a new tab)
Valuation

About this valuation

How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.

Our estimate

£363,000

  • Against its 2025 sale (£348,000)+4%
  • Against CF3 6YR's recent median (£285,000)+27%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 31 Clos Thomas is modelled from its 90 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in CF3 6YR. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.

What it's based on

  • Floor area

    90 m² from the EPC lodged in November 2020

  • Sales of this home

    2 sales recorded, the latest in 2025

  • Recent sales in CF3 6YR

    5 sales, median £285,000 (2026–2025)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: February 2026Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
PlanningNone on this homeFull history, plus nearby schemes
Flood riskNot shownIncluded
Price

Sales history & valuation

Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.

31 Clos Thomas valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 28 February 2025Most recent

    £348,000

    +21.3%over 4 years

  2. 17 December 2020

    £286,995

Median price across the last 5 sales in CF3 6YR: £285,000 (2026–2025).

Risks

What this page doesn't show

1 potential issue has already been flagged for 31 Clos Thomas, Old St Mellons, Cardiff, CF3 6YR. The detail, evidence and what to ask about it are in the Risks Report.
  • Larger development activity nearbyIn report
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

One time fee only - money back guarantee

Overview

About 31 Clos Thomas

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

31 Clos Thomas is a three-bedroom detached house in Old St. Mellons, Cardiff, Cardiff (CF3 6YR). It has a recorded floor area of 90 m² (around 969 sq ft). The latest certificate (November 2020) returns a B (score 82), comfortably above the UK average. The recommended improvements would push it to A (score 93). The home occupies a corner plot and a cul-de-sac position.

Most recent transfer was February 2025 at £348,000 — fresh data. At 90 m² it's 15.4% larger than the typical home in the postcode (78 m² median across 44 EPCs). Across 2020–2025, sale prices on this property compounded at 4.7% per year. On a £-per-square-foot basis, the last sale (£359/sq ft) was about 20.1% above the typical sold price in the postcode.

Specifications

What this property has

Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.

Inside

  • Bedrooms3
  • Bathrooms2
  • Open-plan layoutYes
  • Dining roomYes
  • CloakroomYes
  • EnsuiteYes
  • FireplaceYes

Outside

  • Private gardenRear
  • DrivewayYes
  • Corner plotYes
  • Cul-de-sacYes
Before you decide

Everything you need to know about 31 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
Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
Current Certificate
Nov 2020

EPC Rating

A
B
B82
C
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Very Good
CO2 Emissions
1.6 t/year
Occupancy
—

Certificate validity

Valid until 5 November 2030

3 years remaining
Planning

Planning history

Applications and permits filed against 31 Clos Thomas, Old St Mellons, Cardiff, CF3 6YR, sourced from the PlanIt planning register.

31 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.

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.

Years Held for 31 Clos Thomas lags the street by a wide margin.

Price per m²

£3,867

Street avg £3,285

Above

Floor Area

90 m²

Street avg 87 m²

On par

CO₂ Emissions

1.6 t/year

Street avg 1.4 t/year

Below

Years Held

1 years

Street avg 5 years

Strongly below
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.

Nearest stops

  • Rogers AvenueBus stop192m
  • Mortimer AvenueBus stop250m
  • Heol Booths 3Bus stop363m
  • Heol Booths 2Bus stop395m

Most reported crime locally

  • Violence & Sexual Offences1,550 reports36%
  • Anti-social Behaviour627 reports14%
  • Public Order468 reports11%
  • Criminal Damage & Arson424 reports10%

Go deeper on the local area

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

SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

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

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£368k

1 Rees Drive, Old St Mellons

CF3 6AS

3 bed2 bath
£352k

1 Began Road, Old St Mellons

CF3 6XJ

3 bed1 bath
£352k

1 Rhodfa Hughes, Old St Mellons

CF3 6YY

3 bed2 bath
£352k

1 Stryd Boyd, Old St Mellons

CF3 6YS

3 bed3 bath
£348k

1 Clos Thomas, Old St Mellons

CF3 6YR

3 bed2 bath
£341k

1 Church Road, Old St Mellons

CF3 6YA

3 bed2 bath
£340k

1 Rogers Avenue, Old St Mellons

CF3 6AL

3 bed2 bath
£311k

1 Heol Swatridge, Old St Mellons

CF3 6AP

3 bed2 bath

Property research, connected

Get up to date data on unlimited properties per month

Explore sale histories, valuations, energy ratings and local areas. Ask the assistant to connect the details and take your research further.

Start your research
Method

How to read this page

Where every figure above comes from, how current it is and what it can't tell you.
Valuation method in detail
How the estimate is made
The estimate for 31 Clos Thomas is modelled from its 90 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in CF3 6YR. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
Where sold prices come from
Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 2 sales are recorded for 31 Clos Thomas. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
Reading the EPC
Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 31 Clos Thomas was lodged in November 2020 at band B and is valid until November 2030. Floor area, heating and insulation details on this page come from it.
Planning records
Planning applications are collected from local authority registers through PlanIt. None is matched to 31 Clos Thomas. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
Area figures
Crime is police-recorded street-level data over the last 18 months, which places each incident at an approximate point. Schools and stops are measured in a straight line from CF3 6YR.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 31 Clos Thomas, Old St Mellons, Cardiff, CF3 6YR. Each answer is also embedded as structured data for search engines.

Know this home? Think our valuation is wrong?

Leave a note for other visitors about work done or anything the records miss, and say what you think it's worth. It takes about two minutes.

Keep exploring