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20 Merthyr Road, Tongwynlais, Cardiff, CF15 7LH

Listed building

Estimated value

£220,000

  • Since the 2025 sale (£159,000)+38%
  • Against CF15 7LH's recent median (£202,000)+9%

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

Learn about this valuation
Property type
Mid terrace
Bedrooms
2
Bathroom
1
Floor area
54 m²
581 sq ft
Energy rating
D
Score 62
Council tax
Band D
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

£220,000

  • Against its 2025 sale (£159,000)+38%
  • Against CF15 7LH's recent median (£202,000)+9%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 20 Merthyr Road is modelled from its 54 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in CF15 7LH. 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

    54 m² from the EPC lodged in September 2024

  • Sales of this home

    1 sale recorded, the latest in 2025

  • Recent sales in CF15 7LH

    5 sales, median £202,000 (2025–2018)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: September 2025Latest 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.

20 Merthyr Road valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 23 June 2025Most recent

    £159,000

Median price across the last 5 sales in CF15 7LH: £202,000 (2025–2018).

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 Merthyr Road

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

20 Merthyr Road is a two-bedroom mid-terrace house in Tongwynlais, Cardiff, Cardiff (CF15 7LH). It has a recorded floor area of 54 m² (around 581 sq ft), construction records dating it to 1900-1929 and council tax band D. It is a listed building, which means external alterations are tightly controlled but it may qualify for heritage tax reliefs. The latest certificate (September 2024) shows a D (score 62), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 84), a 2-band jump.

It changed hands recently, sold June 2025 for £159,000. Today's modelled estimate of £220,000 is 38.4% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£274/sq ft) was about 41.2% above the typical sold price in the postcode. At 54 m² it's 16.9% smaller than the typical home in the postcode (65 m² median across 11 EPCs).

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

  • Bedrooms2
  • Bathrooms1

Building

  • Listed buildingYes
Before you decide

Everything you need to know about 20 Merthyr Road

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

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.

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

Current Certificate
Sept 2024

EPC Rating

A
B
C
D
D62
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
2.6 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 16 September 2034

7 years remaining
Planning

Planning history

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

20 Merthyr 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.

On the street

Versus other Merthyr Road homes

Four headline reads against 11 similar houses on this street, drawn from the latest EPC and Land Registry data.

Floor Area for 20 Merthyr Road lags the street by a wide margin.

Price per m²

£2,944

Street avg £2,722

On par

Floor Area

54 m²

Street avg 85 m²

Strongly below

Habitable Rooms

4 rooms

Street avg 4 rooms

On par

CO₂ Emissions

2.6 t/year

Street avg 2.8 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

85/mo

Steady year-on-year across the wider district.

Nearest stop

0.0 km

Bute Street — bus stop.

Nearest stops

  • Bute StreetBus stop18m
  • Wyndham StreetBus stop48m
  • Lewis ArmsBus stop74m
  • St Michael`s CloseBus stop183m

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-eraMid-Terrace HouseEPC DPre-1919 buildListed building

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

From £885 · 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.
£223k

1 Castle Street, Taffs Well

CF15 7RL

2 bed1 bath
£227k

1 Anchor Street, Taffs Well

CF15 7RH

2 bed1 bath
£262k

1 Castell Coch View, Tongwynlais

CF15 7LA

2 bed1 bath
£279k

1 Castle Road, Tongwynlais

CF15 7JQ

2 bed1 bath
£220k

1 Church Street, Taffs Well

CF15 7PG

3 bed
£289k

1 Church Lane, Nantgarw

CF15 7TQ

3 bed1 bath
£299k

1 Bute Street, Tongwynlais

CF15 7LJ

3 bed1 bath
£364k

1 Forest Cottage, Castle Road, Tongwynlais

CF15 7JR

3 bed1 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 20 Merthyr Road is modelled from its 54 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in CF15 7LH. 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 Merthyr 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 Merthyr Road was lodged in September 2024 at band D and is valid until September 2034. 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 20 Merthyr 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 7LH.
Council tax band
20 Merthyr Road is in council tax band D. 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 Merthyr Road, Tongwynlais, Cardiff, CF15 7LH. Each answer is also embedded as structured data for search engines.

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