What type of property is 15 Allen Close, CF3 5DH?

15 Allen Close, CF3 5DH is a detached house.

When did 15 Allen Close, CF3 5DH last change hands?

15 Allen Close, CF3 5DH last sold for £199,995 in September 2003, around 23 years ago. Before that, it sold for £124,000 in September 1997, so prices have been rising over 6 years on record. Source: HM Land Registry.

What is the price history for 15 Allen Close, CF3 5DH?

Across 2 sales between September 1997 and September 2003, 15 Allen Close, CF3 5DH rose from £124,000 to £199,995, a change of £75,995. That works out to roughly +8.3% per year compounded over 6 years. Source: HM Land Registry.

What energy rating does 15 Allen Close, CF3 5DH have?

The current EPC rating for 15 Allen Close, CF3 5DH is E with a score of 52 out of 100, lodged in July 2015. The assessor estimates the property could reach a B. Source: EPC Register.

What is the floor area of 15 Allen Close, CF3 5DH?

15 Allen Close, CF3 5DH has a recorded floor area of 117 m² (1,259 sq ft). That makes it about 36% larger than the median EPC-recorded property in CF3 5DH. Source: EPC Register.

How is 15 Allen Close, CF3 5DH heated?

The latest EPC at 15 Allen Close, CF3 5DH records mains gas as the main heating fuel. Source: EPC Register.

What council tax band is 15 Allen Close, CF3 5DH?

15 Allen Close, CF3 5DH is in council tax band F. That sits towards the upper end of the band ladder, typically reflecting larger or higher-value homes.

Where is 15 Allen Close, CF3 5DH located?

15 Allen Close, CF3 5DH sits in Old St. Mellons, Cardiff, Cardiff. It falls within the CF3 postcode district.

How safe is the area around 15 Allen Close, CF3 5DH?

Police records around 15 Allen Close, CF3 5DH show an average of 3 reported crimes per month over the last 13 months. Violent crime makes up roughly 48% of reports, the most common category. The overall trend is rising (210% versus the prior period). Source: Police UK.

What transport links are near 15 Allen Close, CF3 5DH?

The closest bus stop to 15 Allen Close, CF3 5DH is Llaneirwg Way, 176m away. In total there are 30 bus stops within the surrounding area.

Calculators

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15 Allen Close, Old St Mellons, Cardiff, CF3 5DH

Property type

Detached

Habitable rooms

From EPC

Floor area

117 m²

1259 sq ft

Energy rating

Score 52

Council tax

Band F

Tenure

Owner Occupied

Overview

About 15 Allen Close

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

15 Allen Close is a detached house in Old St. Mellons, Cardiff, Cardiff (CF3 5DH). It has a recorded floor area of 117 m² (around 1259 sq ft), construction records dating it to 2003-2006 and council tax band F. The latest certificate (July 2015) shows an E (score 52), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 85), a 3-band jump. The latest certificate is from July 2015, so improvements made since then won't be reflected.

It hasn't traded since September 2003, a hold of 23 years that's notably long for the area. At 117 m² the property is well over the postcode median (90 m² across 24 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 1997–2003, sale prices on this property compounded at 8.3% per year. Today's modelled estimate of £424,000 sits 112% above the 2003 sale of £199,995.

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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.

15 Allen Close sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.

EPC Expired

This certificate is over 10 years old and is no longer valid.Expired 28 Jul 2025

EPC Rating

E52

Main Heating

Gas

Main Fuel

Gas

Hot Water

Average

Windows

Average

CO2 Emissions

6.5 t/year

Occupancy

Owner Occupied

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21st centuryDetached HouseEPC E

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Planning

Planning history

Applications and permits filed against 15 Allen Close, Old St Mellons, Cardiff, CF3 5DH, sourced from the PlanIt planning register.

15 Allen 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.

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

15 Allen Close's estimated value is more than triple its earliest registered sale price (1997).

Current estimate

£424,000

Modelled from EPC, postcode comparables and a sale-price growth of 8.3% per year over 6 years.

See how we calculated this

Last sold (2003)

£199,995

Growth on file: 8.3% per year over 6 years.

Sales timeline

24 September 2003Most recent
£199,995
+61.3%over 5 years
25 September 1997
£124,000

Median price across the last 5 sales in CF3 5DH: £258,000 (2025–2020).

Nearby sales in CF3 5DH

On the street

Versus other Allen Close homes

Four headline reads against 24 similar houses on this street, drawn from the latest EPC and Land Registry data.

On co₂ emissions, 15 Allen Close runs well behind the street norm.

Price per m²

£1,709

Street avg £2,345

Below

Floor Area

117 m²

Street avg 99 m²

Above

Habitable Rooms

7 rooms

Street avg 6 rooms

Above

CO₂ Emissions

6.5 t/year

Street avg 3.5 t/year

Strongly below

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Everything you need to know about 15 Allen Close

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

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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.

£426k

1 Chapel Row Lane, Old St Mellons

CF3 5ST

3 bed

£444k

1 Clos Hendre Gadno, Old St Mellons

CF3 5UJ

5 bed3 bath

£596k

1 Courtenay Close, Old St Mellons

CF3 5UL

4 bed2 bath

£289k

1 Chapel Row, Old St Mellons

CF3 5UB

£274k

1 Brendon Close, Llanrumney

CF3 5RJ

3 bed1 bath

£265k

1 Axbridge Crescent, Llanrumney

CF3 5TJ

3 bed

£251k

1 Captain S View, Braunton Crescent, Llanrumney

CF3 5AD

2 bed1 bath

£219k

1 Blackbirds Way, St Mellons

CF3 5RE

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

Reported crime in the wider district is trending notably upward year-on-year.

Crime

3/mo

Rising year-on-year across the wider district.

Nearest stop

0.2 km

Llaneirwg Way — 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 15 Allen Close, Old St Mellons, Cardiff, CF3 5DH. Each answer is also embedded as structured data for search engines.