3 Merthyr Road, Tongwynlais, Cardiff, CF15 7LF
About 3 Merthyr Road
3 Merthyr Road is a two-bedroom semi-detached house in Tongwynlais, Cardiff, Cardiff (CF15 7LF). It has a recorded floor area of 134 m² (around 1442 sq ft), construction records dating it to 1900-1929 and council tax band F. The latest certificate (December 2015) shows a D (score 55), a step below the typical UK home. Earlier certificates rated it C (November 2013); the latest reading is one band lower. Between certificates, lighting went from Poor to Average; while wall efficiency dropped from Good to Very Poor and window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 78). The latest certificate is from December 2015, so improvements made since then won't be reflected.
At 134 m² the property is well over the postcode median (92 m² across 13 EPCs), placing it in the larger end of the local stock. One planning record on file: an extension approved in 2024. Past consents include an extension, meaningful when judging how the property has evolved. Last sold in May 2016, so it's been off the market for around 10 years. Today's modelled estimate of £408,000 is 38.3% above the 2016 sale price.
What this property has
Inside
- Bedrooms2
- Bathrooms2
- Dining roomYes
- CloakroomYes
- EnsuiteYes
Outside
- Private gardenSouth-facing
- ParkingAllocated
Building
- Heating systemGas
Energy performance
3 Merthyr Road's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 12 Dec 2025
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, has been extended more than once, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £1,020 · Includes VAT
Planning history
1 application on record at 3 Merthyr Road, Tongwynlais, Cardiff, CF15 7LF
- Mar 2024ExtensionFullOutcome in report
Extension: Single storey
New single storey extension and associated external works and new cross over to create parking space.
- Documents
- 15 docs on file
- Reference
- 23/02707/HSE
Unlock 3 Merthyr Road, Tongwynlais, Cardiff, CF15 7LF'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- Every decision — granted, refused or withdrawn (1 on record)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 15 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
3 Merthyr Road valuation sits well clear of the typical sold price in this postcode.
£408,000
Modelled from EPC, postcode comparables.
£295,000
Recorded with HM Land Registry.
Sales timeline
26 May 2016Most recent
£295,000
Median price across the last 5 sales in CF15 7LF: £220,000 (2024–2012).
Nearby sales in CF15 7LF
45 Merthyr Road, Tongwynlais, Cardiff, CF15 7LF
Sold Apr 2024
£220,00039 Merthyr Road, Tongwynlais, Cardiff, CF15 7LF
Sold May 2023
£237,50043 Merthyr Road, Tongwynlais, Cardiff, CF15 7LF
Sold Nov 2022
£310,00023 Merthyr Road, Tongwynlais, Cardiff, CF15 7LF
Sold Dec 2017
£180,00019 Merthyr Road, Tongwynlais, Cardiff, CF15 7LF
Sold Nov 2012
£83,000
Versus other Merthyr Road homes
CO₂ Emissions for 3 Merthyr Road lags the street by a wide margin.
Price per m²
£2,201
Street avg £1,900
Floor Area
134 m²
Street avg 105 m²
Habitable Rooms
7 rooms
Street avg 5 rooms
CO₂ Emissions
7.1 t/year
Street avg 4.6 t/year
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
St Michael`s Close — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







