Model valuation£417,0008 Busby Close
Local market context
9 Clos Derwen, Cardiff, CF23 5HJ
4 sales on record2 planning records
Estimated value
£609,000
- Since the 2014 sale (£370,000)+65%
- Against CF23 5HJ's recent median (£425,000)+43%
Newest record on this page: February 2026. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.
Property type
Detached
Bedrooms
3
Bathrooms
2
Floor area
160 m²
1722 sq ft
Energy rating
C
Score 76
Council tax
Band G
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
£609,000
- Against its 2014 sale (£370,000)+65%
- Against CF23 5HJ's recent median (£425,000)+43%
Your note and figure are shown publicly on this page.
How the estimate is made
The estimate for 9 Clos Derwen is modelled from its 160 m² EPC floor area, its 4 recorded sales and recent sales of comparable homes in CF23 5HJ. 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
160 m² from the EPC lodged in February 2026
Sales of this home
4 sales recorded, the latest in 2014
Recent sales in CF23 5HJ
5 sales, median £425,000 (2025–2021)
This page or the full report?
| Data | This page | Full report |
|---|---|---|
| Sales | Latest sale shown: May 2025 | Latest available records, read when you order |
| Valuation | Estimate from the last refresh | Analysed against comparable sales |
| Planning | 1 of 2 applications | 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.
9 Clos Derwen has more than doubled in price since the earliest registered sale in 1999.
Sales timeline
18 August 2014Most recent
£370,000
+34.1%over 4 years30 November 2009
£276,000
+10.4%24 August 2009
£250,000
+73.7%over 9 years19 November 1999
£143,950
Median price across the last 5 sales in CF23 5HJ: £425,000 (2025–2021).
What this page doesn't show
Nothing is flagged from the data on this page, but these checks are only run in the report. The detail, evidence and what to ask about it are in the Risks 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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About 9 Clos Derwen
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
9 Clos Derwen is a three-bedroom detached house in Cardiff (CF23 5HJ). It has a recorded floor area of 160 m² (around 1722 sq ft), construction records dating it to 1996-2002 and council tax band G. The property has underfloor heating on record, all of which lower running costs and tend to lift resale appeal. Other recorded features include a conservatory. The latest certificate (February 2026) shows a C (score 76), near the top of the C band. The rating has held steady at C across 2 certificates since September 2009. Between certificates, roof efficiency went from Good to Very Good and lighting went from Average to Good; while window efficiency dropped from Good to Average. This certificate was lodged in the last six months, so the rating reflects current condition.
At 160 m² the property is well over the postcode median (114 m² across 23 EPCs), placing it in the larger end of the local stock. Across 1999–2014, sale prices on this property compounded at 6.6% per year. Today's modelled estimate of £609,000 sits 64.6% above the 2014 sale of £370,000. On the market in August 2014 and unlisted since — roughly 12 years. Across the public record there are 4 sales, relatively high churn for a single property. 2 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension, meaningful when judging how the property has evolved.
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
- Bathrooms2
- Utility roomYes
- EnsuiteYes
- ConservatoryYes
Outside
- Private gardenRear
- GarageIntegral
Building
- Underfloor heatingYes
Before you decide
Everything you need to know about 9 Clos Derwen
The true value, the hidden risks and the full sale history, in one report.
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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.
The EPC has just been inspected, so the rating reflects current condition.
Current Certificate(1 of 2)
Feb 2026
EPC Rating
A
B
C
C76
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
3.5 t/year
Occupancy
Owner Occupied
Certificate validity
Valid until 26 February 2036
Property Improvements
Changes detected from historical EPC data
Feb 2026from Sept 2009
Roof
GoodVery Good
Roof insulation improved
Low Energy Lighting
31%100%
More low energy lighting installed
Planning history
Applications and permits filed against 9 Clos Derwen, Cardiff, CF23 5HJ, sourced from the PlanIt planning register.
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
2 applications on record at 9 Clos Derwen, Cardiff, CF23 5HJ
2decisions2extensions15documents1nearby
Flagged:Demolition
- Jul 2020DemolitionFullOutcome in report
DEMOLITION OF EXISTING CONSERVATORY, SINGLE STOREY REAR EXTENSION, TWO STOREY FRONT AND SIDE EXTENSION AND RAISING OF THE ROOF WITH REAR DORMER EXTENSIONS
Extension- Documents
- 8 docs on file
- Reference
- 20/00790/DCH
- More recent applications — locked
- ExtensionOct 2020Decision
Unlock 9 Clos Derwen, Cardiff, CF23 5HJ's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (2 on record)
- All 2 applications on this property in full, plus 1 notable nearby
- The 15 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Versus other Clos Derwen homes
Four headline reads against 23 similar houses on this street, drawn from the latest EPC and Land Registry data.
9 Clos Derwen outperforms the street on epc rating by a wide margin.
Price per m²
£2,313
Street avg £3,142
Floor Area
160 m²
Street avg 115 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
3.5 t/year
Street avg 3.6 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.
Crime
169/mo
Falling year-on-year across the wider district.
Nearest stop
0.2 km
Brandreth Rd — bus stop.
Nearest stops
- Brandreth RdBus stop153m
- Wasdale CloseBus stop200m
- Dorchester CourtBus stop255m
- Alder RoadBus stop261m
Most reported crime locally
- Violence & Sexual Offences995 reports33%
- Anti-social Behaviour345 reports11%
- Public Order344 reports11%
- Shoplifting340 reports11%
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
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Late 20th centuryDetached HouseEPC C
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Similar properties nearby
A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
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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 9 Clos Derwen is modelled from its 160 m² EPC floor area, its 4 recorded sales and recent sales of comparable homes in CF23 5HJ. 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. 4 sales are recorded for 9 Clos Derwen. 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 9 Clos Derwen was lodged in February 2026 at band C and is valid until February 2036. 2 certificates are on record, which shows how the home has changed.
- Planning records
- Planning applications are collected from local authority registers through PlanIt. 2 applications are matched to 9 Clos Derwen. 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 18 months, which places each incident at an approximate point. Schools and stops are measured in a straight line from CF23 5HJ.
- Council tax band
- 9 Clos Derwen 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.
Common questions
The questions buyers, sellers and homeowners most often ask about 9 Clos Derwen, Cardiff, CF23 5HJ. Each answer is also embedded as structured data for search engines.
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- Every home in CF23 5HJSold prices, values and energy ratings for the postcode
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