Skip to content
UK Property Looker

42 Mill Road, Tongwynlais, Cardiff, CF15 7JP

Property type
Semi-detached
Bedrooms
4
Bathrooms
2
Floor area
128 m²
1378 sq ft
Energy rating
C
Score 73
Council tax
Band D
Tenure
Owner Occupied
Overview

About 42 Mill Road

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

42 Mill Road is a four-bedroom semi-detached house in Tongwynlais, Cardiff, Cardiff (CF15 7JP). It has a recorded floor area of 128 m² (around 1378 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (July 2025) shows a C (score 73). When first surveyed in November 2010 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Good and lighting went from Good to Very Good; while roof efficiency dropped from Very Good to Average and window efficiency dropped from Average to Poor.

At 128 m² the property is well over the postcode median (76 m² across 17 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 71% of similar EPCs). Across 2015–2018, sale prices on this property compounded at 10% per year. Today's modelled estimate of £417,000 sits 60.4% above the 2018 sale of £260,000. On a £-per-square-foot basis, the last sale (£189/sq ft) was about 18.7% above the typical sold price in the postcode. On the market in March 2018 and unlisted since — roughly 8 years.

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

  • Bedrooms4
  • Bathrooms2
  • Open-plan layoutYes
  • Dining roomYes

Outside

  • Private gardenSouth-facing

Building

  • Central heatingYes
Before you decide

Everything you need to know about 42 Mill Road

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

Pick your report · every report is £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(1 of 3)
Jul 2025

EPC Rating

A
B
C
C73
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Poor
CO2 Emissions
3.6 t/year
Occupancy
Owner Occupied

Property Improvements

Changes detected from historical EPC data

Dec 2013from Nov 2010
Heating Controls
ThermostatProg + Stat

Heating controls upgraded for better temperature management

Hot Water
Main SystemMain (No Stat)

Hot water system changed

Wall Insulation
UninsulatedInsulated Cavity

Cavity wall insulation installed

Low Energy Lighting
50%100%

More low energy lighting installed

Jul 2025from Dec 2013
EPC improved fromD64toC73
Heating Controls
Prog + StatFull

Heating controls upgraded for better temperature management

Hot Water
Main (No Stat)Main System

Hot water system upgraded

Roof Insulation
InsulatedWell Insulated

Loft insulation upgraded to recommended levels

SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Early 20th centurySemi-Detached HouseEPC C

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 £695 · Includes VAT

Planning

Planning history

Applications and permits filed against 42 Mill Road, Tongwynlais, Cardiff, CF15 7JP, sourced from the PlanIt planning register.

42 Mill Road 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.

42 Mill Road valuation sits well clear of the typical sold price in this postcode.

Current estimate

£417,000

Modelled from EPC, postcode comparables and a sale-price growth of 10.0% per year over 2 years.

See how we calculated this
Last sold (2018)

£260,000

Growth on file: 10.0% per year over 2 years.

Sales timeline

  1. 21 March 2018Most recent

    £260,000

    +26.8%over 2 years

  2. 20 September 2015

    £205,000

Median price across the last 5 sales in CF15 7JP: £271,000 (2024–2021).

On the street

Versus other Mill Road homes

Four headline reads against 15 similar houses on this street, drawn from the latest EPC and Land Registry data.

EPC Rating for 42 Mill Road runs comfortably ahead of the street norm.

Price per m²

£2,031

Street avg £2,688

Below

Floor Area

128 m²

Street avg 86 m²

Strongly above

Habitable Rooms

6 rooms

Street avg 4 rooms

Strongly above

CO₂ Emissions

3.6 t/year

Street avg 4.5 t/year

On par
Before you decide

Everything you need to know about 42 Mill Road

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

Pick your report · every report is £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.
£420k

1 Clos Llewellyn, Taffs Well

CF15 7AT

4 bed2 bath
£316k

1 Bute Villa, Taffs Well

CF15 7QP

4 bed1 bath
£305k

1 Cwm Gwynlais, Tongwynlais

CF15 7HU

4 bed
£275k

1 Beechwood Road, Taffs Well

CF15 7RZ

4 bed
£432k

1 Birch Hill, Tongwynlais

CF15 7LL

5 bed3 bath
£379k

1 Forest Cottage, Castle Road, Tongwynlais

CF15 7JR

3 bed1 bath
£473k

1 Cules Terrace, Taffs Well

CF15 7QJ

5 bed
£309k

1 Bute Street, Tongwynlais

CF15 7LJ

3 bed1 bath
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

2/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

Lewis Arms — 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 42 Mill Road, Tongwynlais, Cardiff, CF15 7JP. Each answer is also embedded as structured data for search engines.