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27 Heol Isaf, Radyr, Cardiff, CF15 8AG

1 planning record

Estimated value

£859,000

  • Since the 2000 sale (£223,000)+285%
  • Against CF15 8AG's recent median (£249,950)+244%

Newest record on this page: December 2025. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Semi-detached
Habitable rooms
9
From EPC
Floor area
233 m²
2508 sq ft
Energy rating
C
Score 70
Council tax
Band G
Tenure
Owner Occupied
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Valuation

About this valuation

How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.

Our estimate

£859,000

  • Against its 2000 sale (£223,000)+285%
  • Against CF15 8AG's recent median (£249,950)+244%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 27 Heol Isaf is modelled from its 233 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in CF15 8AG. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.

What it's based on

  • Floor area

    233 m² from the EPC lodged in December 2025

  • Sales of this home

    1 sale recorded, the latest in 2000

  • Recent sales in CF15 8AG

    5 sales, median £249,950 (2025–2007)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: March 2025Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
Planning1 applicationFull history, plus nearby schemes
Flood riskNot shownIncluded
Price

Sales history & valuation

Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.

27 Heol Isaf's estimated value is more than triple its earliest registered sale price (2000).

Sales timeline

  1. 13 July 2000Most recent

    £223,000

Median price across the last 5 sales in CF15 8AG: £249,950 (2025–2007).

Risks

What this page doesn't show

1 potential issue has already been flagged for 27 Heol Isaf, Radyr, Cardiff, CF15 8AG. The detail, evidence and what to ask about it are in the Risks Report.
  • Larger development activity nearbyIn report
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

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Overview

About 27 Heol Isaf

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

27 Heol Isaf is a semi-detached house in Radyr, Cardiff, Cardiff (CF15 8AG). It has a recorded floor area of 233 m² (around 2508 sq ft), construction records dating it to before 1900 and council tax band G. The latest certificate (December 2025) shows a C (score 70). The recommended improvements would push it to B (score 81).

It hasn't traded since July 2000, a hold of 26 years that's notably long for the area. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. At 233 m² the property is well over the postcode median (168 m² across 4 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the top 10% of properties in this postcode. Today's modelled estimate of £859,000 sits 285.2% above the 2000 sale of £223,000. One historical planning record sits against the property in 2010.

Before you decide

Everything you need to know about 27 Heol Isaf

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

Larger development activity nearby

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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.

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

Current Certificate
Dec 2025

EPC Rating

A
B
C
C70
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Very Poor
CO2 Emissions
7.0 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 15 December 2035

9 years remaining
Planning

Planning history

Applications and permits filed against 27 Heol Isaf, Radyr, Cardiff, CF15 8AG, sourced from the PlanIt planning register.

1 application on record at 27 Heol Isaf, Radyr, Cardiff, CF15 8AG

1decisions2documents1nearby
  1. Sept 2010
    OutbuildingFull
    Outcome in report

    ERECTION OF A SINGLE STOREY GARAGE TO SIDE OF DWELLING

    Documents
    2 docs on file
    Reference
    10/01371/DCH
    Full record in report

Unlock 27 Heol Isaf, Radyr, Cardiff, CF15 8AG'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 2 documents, officer reports & conditions
  • What the pattern means for extending or converting here
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One time fee only - money back guarantee

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.

Nearest stops

  • DanybrynBus stop114m
  • Station RoadBus stop114m
  • DanybrynBus stop158m
  • Radur Rail StationRailway station246m

Most reported crime locally

  • Violence & Sexual Offences366 reports33%
  • Anti-social Behaviour150 reports14%
  • Public Order141 reports13%
  • Shoplifting104 reports9%

Go deeper on the local area

A Local Area report breaks down crime, transport links, schools and air quality in depth.

SDL Surveying

Get a survey for this property

Level 3 Building Survey

Victorian-eraSemi-Detached HouseEPC CPre-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 £1,360 · Includes VAT

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

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Method

How to read this page

Where every figure above comes from, how current it is and what it can't tell you.
Valuation method in detail
How the estimate is made
The estimate for 27 Heol Isaf is modelled from its 233 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in CF15 8AG. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
Where sold prices come from
Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 1 sale is recorded for 27 Heol Isaf. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
Reading the EPC
Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 27 Heol Isaf was lodged in December 2025 at band C and is valid until December 2035. Floor area, heating and insulation details on this page come from it.
Planning records
Planning applications are collected from local authority registers through PlanIt. 1 application is matched to 27 Heol Isaf. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
Area figures
Crime is police-recorded street-level data over the last 13 months, which places each incident at an approximate point. Schools and stops are measured in a straight line from CF15 8AG.
Council tax band
27 Heol Isaf is in council tax band G. Bands are set by the Valuation Office Agency from historic values (1 April 1991 in England, 1 April 2003 in Wales), not today's price; the amount you pay depends on the council's rate for the band.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 27 Heol Isaf, Radyr, Cardiff, CF15 8AG. Each answer is also embedded as structured data for search engines.

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