What type of property is 99 Heol Isaf, CF15 8DW?

99 Heol Isaf, CF15 8DW is a 5-bedroom mid-terrace house.

What was the last sold price for 99 Heol Isaf, CF15 8DW?

99 Heol Isaf, CF15 8DW last sold for £240,000 in June 2020, around 6 years ago. Source: HM Land Registry.

What is the EPC rating for 99 Heol Isaf, CF15 8DW?

The current EPC rating for 99 Heol Isaf, CF15 8DW is C with a score of 70 out of 100, lodged in October 2025. It has improved from a D recorded in June 2019. Source: EPC Register.

What is the floor area of 99 Heol Isaf, CF15 8DW?

99 Heol Isaf, CF15 8DW has a recorded floor area of 136 m² (1,464 sq ft), around 27 m² per bedroom. That makes it about 8% smaller than the median EPC-recorded property in CF15 8DW. Source: EPC Register.

How is 99 Heol Isaf, CF15 8DW heated?

The latest EPC at 99 Heol Isaf, CF15 8DW records mains gas as the main heating fuel. Source: EPC Register.

What council tax band is 99 Heol Isaf, CF15 8DW?

99 Heol Isaf, CF15 8DW is in council tax band F. That sits towards the upper end of the band ladder, typically reflecting larger or higher-value homes.

Where is 99 Heol Isaf, CF15 8DW located?

99 Heol Isaf, CF15 8DW sits in Radyr, Cardiff, Cardiff. It falls within the CF15 postcode district.

Is 99 Heol Isaf, CF15 8DW in a safe area?

Police records around 99 Heol Isaf, CF15 8DW show an average of 2 reported crimes per month over the last 5 months. Criminal damage arson makes up roughly 40% of reports, the most common category. The overall trend is broadly stable. Source: Police UK.

What transport links are near 99 Heol Isaf, CF15 8DW?

The closest bus stop to 99 Heol Isaf, CF15 8DW is Christ Church, 91m away. The nearest rail option is Radur Rail Station, 374m away.

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99 Heol Isaf, Radyr, Cardiff, CF15 8DW

Property type

Mid terrace

Bedrooms

Bathrooms

Floor area

136 m²

1464 sq ft

Energy rating

Score 70

Council tax

Band F

Tenure

Owner Occupied

Overview

About 99 Heol Isaf

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

99 Heol Isaf is a five-bedroom mid-terrace house in Radyr, Cardiff, Cardiff (CF15 8DW). It has a recorded floor area of 136 m² (around 1464 sq ft), construction records dating it to before 1900 and council tax band F. The latest certificate (October 2025) shows a C (score 70). When first surveyed in June 2019 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Average and lighting went from Very Poor to Very Good; while window efficiency dropped from Average to Poor.

On energy efficiency it sits in the top 10% of properties in this postcode. Today's modelled estimate of £509,000 sits 112.1% above the 2020 sale of £240,000. On a £-per-square-foot basis, the last sale (£164/sq ft) was about 24.3% below the postcode norm. Most recent transfer: June 2020 at £240,000.

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

Bedrooms5
Bathrooms2
Utility roomYes
EnsuiteYes
StudyYes
FireplaceYes

Outside

Private gardenRear
GarageYes

Building

Heating systemGas
RefurbishedYes

Before you decide

Everything you need to know about 99 Heol Isaf

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

Larger development activity nearby

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The data behind every report

Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

99 Heol Isaf ranks among the most efficient homes in the postcode for energy use.

Current Certificate(1 of 2)

Oct 2025

EPC Rating

C70

Main Heating

Gas

Main Fuel

Gas

Hot Water

Good

Windows

Poor

CO2 Emissions

4.2 t/year

Occupancy

Owner Occupied

Property Improvements

Changes detected from historical EPC data

Oct 2025from Jun 2019

EPC improved fromD57toC70

Heating Controls

Prog + TRVsFull

Heating controls upgraded for better temperature management

Windows

Mostly DoubleFull Double

Windows upgraded, improving insulation

Roof Insulation

UninsulatedWell Insulated

Loft insulation installed or upgraded to 250mm+

Low Energy Lighting

8%100%

More low energy lighting installed

Get a survey for this property

Level 3 Building Survey

Victorian-eraMid-Terrace HouseEPC CPre-1919 buildExtended multiple times (2+ extensions)

Because the property was built before 1919 and has been extended more than once, we believe a Level 3 building survey should be considered.

From £1,085 · Includes VAT

Planning

Planning history

Applications and permits filed against 99 Heol Isaf, Radyr, Cardiff, CF15 8DW, sourced from the PlanIt planning register.

99 Heol Isaf has no planning applications on record.

But the area is active

3 notable applications 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.

The latest sale landed in the post-pandemic price surge — useful context when reading the figure.

Current estimate

£509,000

Modelled from EPC, postcode comparables.

See how we calculated this

Last sold (2020)

£240,000

Recorded with HM Land Registry.

Sales timeline

23 June 2020Most recent
£240,000

Median price across the last 5 sales in CF15 8DW: £551,000 (2024–2020).

Nearby sales in CF15 8DW

On the street

Versus other Heol Isaf homes

Four headline reads against 15 similar houses on this street, drawn from the latest EPC and Land Registry data.

On price per m², 99 Heol Isaf runs well behind the street norm.

Price per m²

£1,765

Street avg £2,838

Strongly below

Floor Area

136 m²

Street avg 159 m²

Below

Habitable Rooms

8 rooms

Street avg 7 rooms

Strongly above

CO₂ Emissions

4.2 t/year

Street avg 7.4 t/year

Strongly above

Before you decide

Everything you need to know about 99 Heol Isaf

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

Larger development activity nearby

Pick your report · every report is £14.99

One time fee only - money back guarantee

The data behind every report

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.

£520k

1 Bryn Calch, Morganstown

CF15 8FD

5 bed2 bath

£498k

1 Ael Y Bryn, Radyr

CF15 8AZ

5 bed1 bath

£451k

1 Bryn Castell, Radyr

CF15 8RA

5 bed

£579k

1 Bates Court, Radyr

CF15 8EJ

5 bed3 bath

£514k

1 Clos Y Gwyddfid, Morganstown

CF15 8EX

4 bed2 bath

£555k

1 Clos Y Mynydd, Morganstown

CF15 8FH

4 bed2 bath

£584k

1 Clos Tylaway, Radyr

CF15 8DU

4 bed3 bath

£410k

1 Blaen Y Coed, Radyr

CF15 8RL

4 bed2 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

Rail-style transport is unusually close for this postcode.

Crime

2/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

Christ Church — 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 99 Heol Isaf, Radyr, Cardiff, CF15 8DW. Each answer is also embedded as structured data for search engines.