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Wentloog House, Mill Lane, Castleton, Cardiff, CF3 2UT

1 planning record

Estimated value

£742,000

  • Since the 2021 sale (£650,000)+14%
  • Against CF3 2UT's recent median (£775,000)-4%

Newest record on this page: December 2025. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Detached
Habitable rooms
6
From EPC
Floor area
202 m²
2174 sq ft
Energy rating
D
Score 57
Tenure
Owner Occupied
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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

£742,000

  • Against its 2021 sale (£650,000)+14%
  • Against CF3 2UT's recent median (£775,000)-4%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for Wentloog House is modelled from its 202 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in CF3 2UT. 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

    202 m² from the EPC lodged in August 2020

  • Sales of this home

    2 sales recorded, the latest in 2021

  • Recent sales in CF3 2UT

    5 sales, median £775,000 (2025–2016)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: December 2025Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
Planning1 applicationFull 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.

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

Sales timeline

  1. 5 February 2021Most recent

    £650,000

    +75.7%over 6 years

  2. 10 April 2014

    £370,000

Median price across the last 5 sales in CF3 2UT: £775,000 (2025–2016).

Risks

What this page doesn't show

1 potential issue has already been flagged for Wentloog House, Mill Lane, Castleton, Cardiff, CF3 2UT. 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 Wentloog House

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

Wentloog House is a detached house in Castleton, Cardiff, Cardiff (CF3 2UT). It has a recorded floor area of 202 m² (around 2174 sq ft) and construction records dating it to 1950-1966. The latest certificate (August 2020) shows a D (score 57), a step below the typical UK home. When first surveyed in June 2009 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Good, window efficiency went from Very Poor to Good and lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Poor. The recommended improvements would push it to C (score 78).

At 202 m² it sits well below the postcode median (323 m² across 10 EPCs), making it one of the more compact homes locally. One planning record on file: an extension approved in 2021. Past consents include an extension and an annexe, meaningful when judging how the property has evolved. Across 2014–2021, sale prices on this property compounded at 8.6% per year. Today's modelled estimate of £742,000 is 14.2% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£299/sq ft) was about 69.9% above the typical sold price in the postcode. Most recent transfer: February 2021 at £650,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.

Before you decide

Everything you need to know about Wentloog House

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.

Wentloog House's carbon output runs well above what efficient homes in the postcode produce.

Current Certificate(1 of 2)
Aug 2020

EPC Rating

A
B
C
D
D57
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Average
Windows
Good
CO2 Emissions
8.3 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 19 August 2030

3 years remaining

Property Improvements

Changes detected from historical EPC data

Aug 2020from Jun 2009
EPC improved fromE40toD57
Main Fuel
OilGas

Switched from oil to mains gas, reducing emissions and costs

Heating Controls
ThermostatFull

Heating controls upgraded for better temperature management

Windows
SingleFull Double

Single glazing replaced with double or better glazing

Roof Insulation
UninsulatedInsulated

Roof insulation improved

Low Energy Lighting
0%88%

More low energy lighting installed

Planning

Planning history

Applications and permits filed against Wentloog House, Mill Lane, Castleton, Cardiff, CF3 2UT, sourced from the PlanIt planning register.

1 application on record at Wentloog House, Mill Lane, Castleton, Cardiff, CF3 2UT

1decisions1extensions16documents1nearby
  1. Apr 2021
    AnnexFull
    Outcome in report

    EXTENSION OF EXISTING GARAGE AND CONVERSION TO PROVIDE ANNEX WITH DISABLED FACILITIES AND LIVE IN CARER

    Extension
    Documents
    16 docs on file
    Reference
    21/0072
    Full record in report

Unlock Wentloog House, Mill Lane, Castleton, Cardiff, CF3 2UT's full planning history

You're seeing the shape of it. The report has the substance.

  • Every decision — granted, refused or withdrawn (1 on record)
  • All 1 application on this property in full, plus 1 notable nearby
  • The 16 documents, officer reports & conditions
  • What the pattern means for extending or converting here
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On the street

Versus other Mill Lane homes

Four headline reads against 10 similar houses on this street, drawn from the latest EPC and Land Registry data.

Price per m² for Wentloog House runs comfortably ahead of the street norm.

Price per m²

£3,218

Street avg £2,289

Strongly above

Floor Area

202 m²

Street avg 288 m²

Below

Habitable Rooms

6 rooms

Street avg 8 rooms

Strongly below

CO₂ Emissions

8.3 t/year

Street avg 9.0 t/year

On par
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

0.1 km

Coach & Horses — bus stop.

Nearest stops

  • Coach & HorsesBus stop117m
  • Castleton Old Post OfficeBus stop157m
  • Castleton RiseBus stop178m
  • Marshfield Primary SchoolBus stop548m

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

Mid 20th centuryDetached HouseEPC D

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 £995 · 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.
£793k

1 Catherine Drive, Marshfield

CF3 2XB

4 bed2 bath
£658k

1 Clos Padrig, St Mellons

CF3 2AF

5 bed3 bath
£650k

1 Church Close, Peterstone Wentlooge

CF3 2TP

£649k

1 Clos Medwy, St Mellons

CF3 2AD

4 bed3 bath
£645k

1 Marshfield Road, Castleton

CF3 2UU

£640k

1 Clos Elphan, St Mellons

CF3 2AE

4 bed
£610k

1 Cambrian Crescent, Marshfield

CF3 2TD

5 bed4 bath
£933k

1 Castleton Gardens, Castleton

CF3 2WD

4 bed2 bath

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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 Wentloog House is modelled from its 202 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in CF3 2UT. 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 Wentloog House. 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 Wentloog House was lodged in August 2020 at band D and is valid until August 2030. 2 certificates are on record, which shows how the home has changed.
Planning records
Planning applications are collected from local authority registers through PlanIt. 1 application is matched to Wentloog House. 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 2UT.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about Wentloog House, Mill Lane, Castleton, Cardiff, CF3 2UT. Each answer is also embedded as structured data for search engines.

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