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21 Cwm Gwynlais, Tongwynlais, Cardiff, CF15 7HU

3 sales on record
Property type
Detached
Bedrooms
3
Bathroom
1
Floor area
88 m²
947 sq ft
Energy rating
C
Score 72
Council tax
Band F
Tenure
Owner Occupied
Overview

About 21 Cwm Gwynlais

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

21 Cwm Gwynlais is a three-bedroom detached house in Tongwynlais, Cardiff, Cardiff (CF15 7HU). It has a recorded floor area of 88 m² (around 947 sq ft), construction records dating it to 1976-1982 and council tax band F. The latest certificate (March 2024) shows a C (score 72). The recommended improvements would push it to B (score 86).

It hasn't traded since May 2000, a hold of 26 years that's notably long for the area. Across 1999–2000, sale prices on this property compounded at 14.9% per year. Today's modelled estimate of £361,000 sits 253.9% above the 2000 sale of £102,000. On a £-per-square-foot basis, the last sale (£108/sq ft) was about 48.7% below the postcode norm. At 88 m² it's 18.5% smaller than the typical home in the postcode (108 m² median across 12 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

  • Bedrooms3
  • Bathrooms1
Before you decide

Everything you need to know about 21 Cwm Gwynlais

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

Pick your report · every report is £14.99

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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.

EPC Rating

A
B
C
C72
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
2.8 t/year
Occupancy
Owner Occupied
SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Late 20th centuryDetached 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 £595 · Includes VAT

Planning

Planning history

Applications and permits filed against 21 Cwm Gwynlais, Tongwynlais, Cardiff, CF15 7HU, sourced from the PlanIt planning register.

21 Cwm Gwynlais 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.

21 Cwm Gwynlais's modelled value sits at over four times its earliest registered sale price (1999).

Current estimate

£361,000

Modelled from EPC, postcode comparables and a sale-price growth of 14.9% per year over 1 year.

See how we calculated this
Last sold (2000)

£102,000

Growth on file: 14.9% per year over 1 year.

Sales timeline

  1. 22 May 2000Most recent

    £102,000

    +15.9%over 1 year

  2. 30 March 1999

    £88,000

    +3.5%

  3. 29 January 1999

    £85,000

Median price across the last 5 sales in CF15 7HU: £300,000 (2022–2017).

On the street

Versus other Cwm Gwynlais homes

Four headline reads against 12 similar houses on this street, drawn from the latest EPC and Land Registry data.

21 Cwm Gwynlais outperforms the street on co₂ emissions by a wide margin.

Price per m²

£1,159

Street avg £2,176

Below

Floor Area

88 m²

Street avg 105 m²

Strongly below

Habitable Rooms

6 rooms

Street avg 6 rooms

Below

CO₂ Emissions

2.8 t/year

Street avg 4.4 t/year

Strongly above
Before you decide

Everything you need to know about 21 Cwm Gwynlais

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.
£379k

1 Forest Cottage, Castle Road, Tongwynlais

CF15 7JR

3 bed1 bath
£309k

1 Bute Street, Tongwynlais

CF15 7LJ

3 bed1 bath
£291k

1 Church Lane, Nantgarw

CF15 7TQ

3 bed1 bath
£220k

1 Church Street, Taffs Well

CF15 7PG

3 bed
£316k

1 Bute Villa, Taffs Well

CF15 7QP

4 bed1 bath
£420k

1 Clos Llewellyn, Taffs Well

CF15 7AT

4 bed2 bath
£305k

1 Cwm Gwynlais, Tongwynlais

CF15 7HU

4 bed
£282k

1 Castle Road, Tongwynlais

CF15 7JQ

2 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

Pantgwynlais — 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 21 Cwm Gwynlais, Tongwynlais, Cardiff, CF15 7HU. Each answer is also embedded as structured data for search engines.