Model valuation£417,0008 Busby Close
Local market context
99 Heol Isaf, Radyr, Cardiff, CF15 8DW
Estimated value
£488,000
- Since the 2020 sale (£240,000)+103%
- Against CF15 8DW's recent median (£551,000)-11%
Newest record on this page: October 2025. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.
Property type
Mid terrace
Bedrooms
5
Bathrooms
2
Floor area
136 m²
1464 sq ft
Energy rating
C
Score 70
Council tax
Band F
Tenure
Owner Occupied
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
£488,000
- Against its 2020 sale (£240,000)+103%
- Against CF15 8DW's recent median (£551,000)-11%
Your note and figure are shown publicly on this page.
How the estimate is made
The estimate for 99 Heol Isaf is modelled from its 136 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in CF15 8DW. 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
136 m² from the EPC lodged in October 2025
Sales of this home
1 sale recorded, the latest in 2020
Recent sales in CF15 8DW
5 sales, median £551,000 (2024–2020)
This page or the full report?
| Data | This page | Full report |
|---|---|---|
| Sales | Latest sale shown: October 2024 | Latest available records, read when you order |
| Valuation | Estimate from the last refresh | Analysed against comparable sales |
| Planning | None on this home | Full history, plus nearby schemes |
| Flood risk | Not shown | Included |
Sales history & valuation
Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
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
What this page doesn't show
1 potential issue has already been flagged for 99 Heol Isaf, Radyr, Cardiff, CF15 8DW. 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
One time fee only - money back guarantee
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 £488,000 sits 103.3% 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.
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
Pick your report · from £14.99
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The data behind every report
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
A
B
C
C70
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Poor
CO2 Emissions
4.2 t/year
Occupancy
Owner Occupied
Certificate validity
Valid until 7 October 2035
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
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.
1
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
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
Floor Area
136 m²
Street avg 159 m²
Habitable Rooms
8 rooms
Street avg 7 rooms
CO₂ Emissions
4.2 t/year
Street avg 7.4 t/year
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.
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
Christ Church — bus stop.
Nearest stops
- Christ ChurchBus stop91m
- Woodfield AvenueBus stop176m
- Kings RdBus stop177m
- Radyr Comprehensive SchoolBus stop211m
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.
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 £1,020 · Includes VAT
Similar properties nearby
A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£497k
1 Ael Y Bryn, Radyr
CF15 8AZ
5 bed1 bath
£498k
1 Bryn Calch, Morganstown
CF15 8FD
5 bed2 bath
£456k
1 Bryn Castell, Radyr
CF15 8RA
5 bed
£601k
1 Bates Court, Radyr
CF15 8EJ
5 bed3 bath
£512k
1 Clos Y Gwyddfid, Morganstown
CF15 8EX
4 bed2 bath
£421k
1 Blaen Y Coed, Radyr
CF15 8RL
4 bed2 bath
£583k
1 Clos Y Mynydd, Morganstown
CF15 8FH
4 bed2 bath
£630k
1 Clos Tylaway, Radyr
CF15 8DU
4 bed3 bath
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Start your researchHow to read this page
Where every figure above comes from, how current it is and what it can't tell you.
- How the estimate is made
- The estimate for 99 Heol Isaf is modelled from its 136 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in CF15 8DW. 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 99 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 99 Heol Isaf was lodged in October 2025 at band C and is valid until October 2035. 2 certificates are on record, which shows how the home has changed.
- Planning records
- Planning applications are collected from local authority registers through PlanIt. None is matched to 99 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 8DW.
- Council tax band
- 99 Heol Isaf is in council tax band F. 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.
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.
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Keep exploring
- Every home in CF15 8DWSold prices, values and energy ratings for the postcode
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- 99 Heol Isaf, Radyr, Cardiff valuationHow the estimate is built and what moves it
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