What kind of home is 17 Heol Isaf, CF15 8AG?

17 Heol Isaf, CF15 8AG is a detached house.

What was the last sold price for 17 Heol Isaf, CF15 8AG?

17 Heol Isaf, CF15 8AG last sold for £6,000 in March 2025, around 1 years ago. Land Registry has 4 sales on record going back to £264,000 in August 1996. Source: HM Land Registry.

How has the value of 17 Heol Isaf, CF15 8AG changed over time?

Across 4 sales between August 1996 and March 2025, 17 Heol Isaf, CF15 8AG fell from £264,000 to £6,000, a change of £258,000. That works out to roughly -12.4% per year compounded over 29 years. Source: HM Land Registry.

How energy efficient is 17 Heol Isaf, CF15 8AG?

The current EPC rating for 17 Heol Isaf, CF15 8AG is E with a score of 49 out of 100, lodged in June 2022. It has improved from a F recorded in August 2012. The assessor estimates the property could reach a C. Source: EPC Register.

How big is 17 Heol Isaf, CF15 8AG?

17 Heol Isaf, CF15 8AG has a recorded floor area of 251 m² (2,702 sq ft). That makes it about 8% larger than the median EPC-recorded property in CF15 8AG. Source: EPC Register.

What heating system does 17 Heol Isaf, CF15 8AG use?

The latest EPC at 17 Heol Isaf, CF15 8AG records mains gas as the main heating fuel. Source: EPC Register.

What is the council tax band for 17 Heol Isaf, CF15 8AG?

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

Which area is 17 Heol Isaf, CF15 8AG in?

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

What is crime like near 17 Heol Isaf, CF15 8AG?

Police records around 17 Heol Isaf, CF15 8AG show an average of 85 reported crimes per month over the last 13 months. Violent crime makes up roughly 33% of reports, the most common category. The overall trend is broadly stable. Source: Police UK.

What transport links are near 17 Heol Isaf, CF15 8AG?

The closest bus stop to 17 Heol Isaf, CF15 8AG is Danybryn, 114m away. The nearest rail option is Radur Rail Station, 246m away.

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17 Heol Isaf, Radyr, Cardiff, CF15 8AG

4 sales on record

Property type

Detached

Habitable rooms

From EPC

Floor area

251 m²

2702 sq ft

Energy rating

Score 49

Council tax

Band H

Tenure

Owner Occupied

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Overview

About 17 Heol Isaf

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

17 Heol Isaf is a detached house in Radyr, Cardiff, Cardiff (CF15 8AG). It has a recorded floor area of 251 m² (around 2702 sq ft), construction records dating it to 1900-1929 and council tax band H. The latest certificate (June 2022) shows an E (score 49), well below the UK norm with real room to improve. When first surveyed in August 2012 the rating was F, the property has climbed 1 band since. Between certificates, lighting went from Very Poor to Poor. The recommended improvements would lift it to C (score 76), a 2-band jump.

At 251 m² the property is well over the postcode median (159 m² across 4 EPCs), placing it in the larger end of the local stock. Across 1996–2025, sale prices on this property compounded at -12.4% per year. Today's modelled estimate of £1,163,000 sits 19283.3% above the 2025 sale of £6,000. On a £-per-square-foot basis, the last sale (£2/sq ft) was about 98.3% below the postcode norm. Most recent transfer was March 2025 at £6,000 — fresh data.

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Everything you need to know about 17 Heol Isaf

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

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Energy

Energy performance

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

17 Heol Isaf's carbon output runs well above what efficient homes in the postcode produce.

Current Certificate(1 of 2)

Jun 2022

EPC Rating

E49

Main Heating

Gas

Main Fuel

Gas

Hot Water

Good

Windows

Average

CO2 Emissions

12.0 t/year

Occupancy

Owner Occupied

Certificate validity

Valid until 5 June 2032

5 years remaining

Property Improvements

Changes detected from historical EPC data

Jun 2022from Aug 2012

EPC improved fromF31toE49

Windows

Mostly DoubleFull Double

Windows upgraded, improving insulation

Get a survey for this property

Level 3 Building Survey

Victorian-eraDetached HouseEPC EPre-1919 buildExtended multiple times (2+ extensions)Solid (non-cavity) walls

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 £1,645 · Includes VAT

Planning

Planning history

Applications and permits filed against 17 Heol Isaf, Radyr, Cardiff, CF15 8AG, sourced from the PlanIt planning register.

17 Heol Isaf has no planning applications on record.

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.

Latest sale on 17 Heol Isaf was the lowest on Land Registry record across the postcode.

Current estimate

£1,163,000

Modelled from EPC, postcode comparables and a sale-price growth of -12.4% per year over 29 years.

See how we calculated this

Last sold (2025)

£6,000

Growth on file: -12.4% per year over 29 years.

Sales timeline

24 March 2025Most recent
£6,000
-99.5%over 2 years
13 January 2023
£1,125,000
+382.8%over 23 years
24 May 1999
£233,000
-11.7%over 2 years
26 August 1996
£264,000

Median price across the last 5 sales in CF15 8AG: £249,950 (2023–2002).

Nearby sales in CF15 8AG

Before you decide

Everything you need to know about 17 Heol Isaf

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

Larger development activity nearby

Pick your report · from £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.

£743k

1 Caer Idwen, Morganstown

CF15 8FZ

4 bed3 bath

£661k

1 Clos Harry Corner, Radyr

CF15 8GR

£630k

1 Clos Tylaway, Radyr

CF15 8DU

4 bed3 bath

£601k

1 Bates Court, Radyr

CF15 8EJ

5 bed3 bath

£583k

1 Clos Y Mynydd, Morganstown

CF15 8FH

4 bed2 bath

£553k

1 Cilfedw, Radyr

CF15 8AR

£544k

1 Caer Graig, Radyr

CF15 8RD

2 bed

£513k

1 Bryncoed, Radyr

CF15 8RH

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

85/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

Danybryn — 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 17 Heol Isaf, Radyr, Cardiff, CF15 8AG. Each answer is also embedded as structured data for search engines.