What kind of home is 20 Duncan Close, CF3 1NP?

20 Duncan Close, CF3 1NP is a 2-bedroom semi-detached house.

What did 20 Duncan Close, CF3 1NP sell for?

20 Duncan Close, CF3 1NP last sold for £112,000 in April 2005, around 21 years ago. Before that, it sold for £45,000 in April 2000, so prices have been rising over 5 years on record. Source: HM Land Registry.

How has the value of 20 Duncan Close, CF3 1NP changed over time?

Across 2 sales between April 2000 and April 2005, 20 Duncan Close, CF3 1NP rose from £45,000 to £112,000, a change of £67,000. That works out to roughly +19.9% per year compounded over 5 years. Source: HM Land Registry.

What energy rating does 20 Duncan Close, CF3 1NP have?

The current EPC rating for 20 Duncan Close, CF3 1NP is C with a score of 74 out of 100, lodged in January 2024. It has improved from a D recorded in March 2013. The assessor estimates the property could reach a B. Source: EPC Register.

How big is 20 Duncan Close, CF3 1NP?

20 Duncan Close, CF3 1NP has a recorded floor area of 56 m² (603 sq ft), around 28 m² per bedroom. That makes it about 18% smaller than the median EPC-recorded property in CF3 1NP. Source: EPC Register.

What heating system does 20 Duncan Close, CF3 1NP use?

The latest EPC at 20 Duncan Close, CF3 1NP records mains gas as the main heating fuel. Source: EPC Register.

What is the council tax band for 20 Duncan Close, CF3 1NP?

20 Duncan Close, CF3 1NP is in council tax band C.

Which area is 20 Duncan Close, CF3 1NP in?

20 Duncan Close, CF3 1NP sits in St. Mellons, Cardiff, Cardiff. It falls within the CF3 postcode district.

Is 20 Duncan Close, CF3 1NP in a safe area?

Police records around 20 Duncan Close, CF3 1NP show an average of 242 reported crimes per month over the last 18 months. Violent crime makes up roughly 36% of reports, the most common category. The overall trend is falling (22% versus the prior period). Source: Police UK.

What transport links are near 20 Duncan Close, CF3 1NP?

The closest bus stop to 20 Duncan Close, CF3 1NP is Ty Coch Court, 88m away. In total there are 30 bus stops within the surrounding area.

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20 Duncan Close, St Mellons, Cardiff, CF3 1NP

Estimated value

£192,000

Since the 2005 sale (£112,000)+71%
Against CF3 1NP's recent median (£245,000)-22%

Newest record on this page: October 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

Bedrooms

Floor area

56 m²

603 sq ft

Energy rating

Score 74

Council tax

Band C

Tenure

Private Rental

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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

£192,000

Against its 2005 sale (£112,000)+71%
Against CF3 1NP's recent median (£245,000)-22%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 20 Duncan Close is modelled from its 56 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in CF3 1NP. 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
56 m² from the EPC lodged in January 2024
Sales of this home
2 sales recorded, the latest in 2005
Recent sales in CF3 1NP
5 sales, median £245,000 (2025–2024)

This page or the full report?

Data	This page	Full report
Sales	Latest sale shown: October 2025	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

Price

Sales history & valuation

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

Sale price has at least doubled since 2000.

Sales timeline

19 April 2005Most recent
£112,000
+148.9%over 5 years
13 April 2000
£45,000

Median price across the last 5 sales in CF3 1NP: £245,000 (2025–2024).

Nearby sales in CF3 1NP

Risks

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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Overview

About 20 Duncan Close

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

20 Duncan Close is a two-bedroom semi-detached house in St. Mellons, Cardiff, Cardiff (CF3 1NP). It has a recorded floor area of 56 m² (around 603 sq ft), construction records dating it to 1996-2002 and council tax band C. The latest certificate (January 2024) shows a C (score 74). When first surveyed in March 2013 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Good, hot-water efficiency went from Average to Good and lighting went from Poor to Very Good. The recommended improvements would push it to B (score 89).

Untraded for 21 years, with the last transfer in April 2005. Across 2000–2005, sale prices on this property compounded at 19.9% per year. Today's modelled estimate of £192,000 sits 71.4% above the 2005 sale of £112,000. At 56 m² it's 17.6% smaller than the typical home in the postcode (68 m² median across 17 EPCs).

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

Bedrooms2

Outside

Private gardenRear
ParkingAllocated

Building

RefurbishedYes

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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.

Current Certificate(1 of 2)

Jan 2024

EPC Rating

C74

Main Heating

Gas

Main Fuel

Gas

Hot Water

Good

Windows

Good

CO2 Emissions

1.7 t/year

Occupancy

Rented

Certificate validity

Valid until 11 January 2034

7 years remaining

Property Improvements

Changes detected from historical EPC data

Jan 2024from Mar 2013

EPC improved fromD59toC74

Heating Controls

Prog + StatThermostat

Heating controls changed

Hot Water

AverageGood

Hot water efficiency improved

Roof Insulation

PartialWell Insulated

Loft insulation upgraded to recommended levels

Floor Insulation

UninsulatedPartial

Floor insulation added or improved

Low Energy Lighting

12%100%

More low energy lighting installed

Planning

Planning history

Applications and permits filed against 20 Duncan Close, St Mellons, Cardiff, CF3 1NP, sourced from the PlanIt planning register.

20 Duncan Close has no planning applications on record.

A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.

On the street

Versus other Duncan Close homes

Four headline reads against 17 similar houses on this street, drawn from the latest EPC and Land Registry data.

On price per m², 20 Duncan Close runs well behind the street norm.

Price per m²

£2,000

Street avg £2,876

Strongly below

Floor Area

56 m²

Street avg 66 m²

Strongly below

Habitable Rooms

4 rooms

Street avg 4 rooms

On par

CO₂ Emissions

1.7 t/year

Street avg 2.2 t/year

Strongly above

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

Crime

242/mo

Falling year-on-year across the wider district.

Nearest stop

0.1 km

Ty Coch Court — bus stop.

Nearest stops

Ty Coch CourtBus stop88m
The MountBus stop101m
Hendre RoadBus stop117m
Menai WayBus stop184m

Most reported crime locally

Violence & Sexual Offences1,550 reports36%
Anti-social Behaviour627 reports14%
Public Order468 reports11%
Criminal Damage & Arson424 reports10%

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 centurySemi-Detached HouseEPC C

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Comparables

Similar properties nearby

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

£205k

1 Canopus Close, St Mellons

CF3 1NR

2 bed1 bath

£203k

1 Dovey Close, Rumney

CF3 1RJ

3 bed

£213k

1 Abergele Road, Rumney

CF3 1RR

3 bed1 bath

£246k

1 Meadvale Court, Meadvale Road

CF3 1UG

3 bed2 bath

£256k

1 Duncan Close, St Mellons

CF3 1NP

3 bed1 bath

£215k

1 Llanina Grove, Rumney

CF3 1SW

4 bed

£190k

1 Gwbert Close, Rumney

CF3 1QY

£195k

1 Brynbala Way, Rumney

CF3 1SX

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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 20 Duncan Close is modelled from its 56 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in CF3 1NP. 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. 2 sales are recorded for 20 Duncan Close. 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 20 Duncan Close was lodged in January 2024 at band C and is valid until January 2034. 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 20 Duncan Close. 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 CF3 1NP.
Council tax band: 20 Duncan Close is in council tax band C. 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 20 Duncan Close, St Mellons, Cardiff, CF3 1NP. Each answer is also embedded as structured data for search engines.

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