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20 Mill Road, Tongwynlais, Cardiff, CF15 7JP

3 planning records

Estimated value

£427,000

  • Since the 2022 sale (£271,000)+58%
  • Against CF15 7JP's recent median (£344,000)+24%

Newest record on this page: November 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
7
From EPC
Floor area
125 m²
1345 sq ft
Energy rating
D
Score 60
Council tax
Band F
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

£427,000

  • Against its 2022 sale (£271,000)+58%
  • Against CF15 7JP's recent median (£344,000)+24%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 20 Mill Road is modelled from its 125 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in CF15 7JP. 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

    125 m² from the EPC lodged in June 2022

  • Sales of this home

    1 sale recorded, the latest in 2022

  • Recent sales in CF15 7JP

    5 sales, median £344,000 (2025–2021)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: November 2025Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
Planning1 of 3 applicationsFull 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. 19 December 2022Most recent

    £271,000

Median price across the last 5 sales in CF15 7JP: £344,000 (2025–2021).

Risks

What this page doesn't show

Nothing is flagged from the data on this page, but these checks are only run in the report. The detail, evidence and what to ask about it are in the Risks 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 20 Mill Road

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

20 Mill Road is a detached house in Tongwynlais, Cardiff, Cardiff (CF15 7JP). It has a recorded floor area of 125 m² (around 1345 sq ft), construction records dating it to before 1900 and council tax band F. The latest certificate (June 2022) shows a D (score 60), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 86), a 2-band jump.

At 125 m² the property is well over the postcode median (75 m² across 18 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £427,000 sits 57.6% above the 2022 sale of £271,000. On a £-per-square-foot basis, the last sale (£201/sq ft) was about 26.7% above the typical sold price in the postcode. 3 planning records sit against the property, 1 approved, 0 refused, 1 pending. Past consents include an extension, meaningful when judging how the property has evolved. An application is currently awaiting a decision. Sold December 2022 for £271,000. 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 20 Mill Road

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

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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.

Recommended upgrades on file would lift this property by multiple EPC bands.

Current Certificate
Jun 2022

EPC Rating

A
B
C
D
D60
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
5.9 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 18 June 2032

5 years remaining
Planning

Planning history

Applications and permits filed against 20 Mill Road, Tongwynlais, Cardiff, CF15 7JP, sourced from the PlanIt planning register.

There is a planning application currently awaiting a decision.

3 applications on record at 20 Mill Road, Tongwynlais, Cardiff, CF15 7JP

1 live now
2decisions1extensions65documents1nearby
  1. Dec 2024
    ExtensionFull
    Outcome in report

    Refurbishment, alteration and extension.

    Documents
    49 docs on file
    Reference
    23/02511/HSE
    Full record in report
  2. More recent applications — locked
  3. ConditionsDecision
  4. ConditionsDecision

Unlock 20 Mill Road, Tongwynlais, Cardiff, CF15 7JP's full planning history

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

  • Every decision — granted, refused or withdrawn (2 on record)
  • All 3 applications on this property in full, plus 1 notable nearby
  • The 65 documents, officer reports & conditions
  • What the pattern means for extending or converting here
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On the street

Versus other Mill Road homes

Four headline reads against 16 similar houses on this street, drawn from the latest EPC and Land Registry data.

Habitable Rooms for 20 Mill Road runs comfortably ahead of the street norm.

Price per m²

£2,168

Street avg £2,809

Below

Floor Area

125 m²

Street avg 85 m²

Strongly above

Habitable Rooms

7 rooms

Street avg 4 rooms

Strongly above

CO₂ Emissions

5.9 t/year

Street avg 4.3 t/year

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

85/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

Lewis Arms — bus stop.

Nearest stops

  • Lewis ArmsBus stop65m
  • Castell Coch ViewBus stop73m
  • Bute StreetBus stop148m
  • St Michael`s CloseBus stop161m

Most reported crime locally

  • Violence & Sexual Offences366 reports33%
  • Anti-social Behaviour150 reports14%
  • Public Order141 reports13%
  • Shoplifting104 reports9%

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 3 Building Survey

Victorian-eraDetached HouseEPC DPre-1919 build

Because the property was built before 1919, we believe a Level 3 building survey should be considered.

From £1,020 · 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.
£398k

1 Clos Llewellyn, Taffs Well

CF15 7AT

4 bed2 bath
£469k

1 Birch Hill, Tongwynlais

CF15 7LL

5 bed3 bath
£376k

1 Brynau Road, Taffs Well

CF15 7SA

£493k

1 Cules Terrace, Taffs Well

CF15 7QJ

5 bed
£364k

1 Forest Cottage, Castle Road, Tongwynlais

CF15 7JR

3 bed1 bath
£330k

1 Bute Villa, Taffs Well

CF15 7QP

4 bed1 bath
£323k

1 Cross Street, Tongwynlais

CF15 7NQ

£305k

1 Cwm Gwynlais, Tongwynlais

CF15 7HU

4 bed

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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 20 Mill Road is modelled from its 125 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in CF15 7JP. 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. 1 sale is recorded for 20 Mill Road. 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 20 Mill Road was lodged in June 2022 at band D and is valid until June 2032. Floor area, heating and insulation details on this page come from it.
Planning records
Planning applications are collected from local authority registers through PlanIt. 3 applications are matched to 20 Mill Road. 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 13 months, which places each incident at an approximate point. Schools and stops are measured in a straight line from CF15 7JP.
Council tax band
20 Mill Road is in council tax band F. Bands are set by the Valuation Office Agency from historic values (1 April 1991 in England, 1 April 2003 in Wales), not today's price; the amount you pay depends on the council's rate for the band.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 20 Mill Road, Tongwynlais, Cardiff, CF15 7JP. Each answer is also embedded as structured data for search engines.

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