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20 Merthyr Road, Tongwynlais, Cardiff, CF15 7LH

Listed building
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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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
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

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.

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

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

Current estimate

£220,000

Modelled from EPC, postcode comparables.

See how we calculated this
Last sold (2025)

£159,000

Recorded with HM Land Registry.

Sales timeline

  1. 23 June 2025Most recent

    £159,000

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

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
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
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
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.

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 20 Merthyr Road, Tongwynlais, Cardiff, CF15 7LH. Each answer is also embedded as structured data for search engines.