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11a, Allen Close, Old St Mellons, Cardiff, CF3 5DH

Property type
Detached
Habitable rooms
8
From EPC
Floor area
151 m²
1622 sq ft
Energy rating
D
Score 67
Council tax
Band G
Tenure
Owner Occupied
Overview

About 11a

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

11a is a detached house in Old St. Mellons, Cardiff, Cardiff (CF3 5DH). It has a recorded floor area of 151 m² (around 1622 sq ft), construction records dating it to 1996-2002 and council tax band G. The latest certificate (July 2010) shows a D (score 67), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 75). The latest certificate is from July 2010, so improvements made since then won't be reflected.

Untraded for 29 years, with the last transfer in August 1997. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. At 151 m² the property is well over the postcode median (90 m² across 24 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £489,000 sits 215.9% above the 1997 sale of £154,800. On a £-per-square-foot basis, the last sale (£95/sq ft) was about 32.7% below the postcode norm.

Before you decide

Everything you need to know about 11a

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

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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.

11a's EPC is over a decade old — improvements since won't be reflected.

EPC Expired

This certificate is over 10 years old and is no longer valid.Expired 05 Jul 2020

EPC Rating

A
B
C
D
D67
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
5.5 t/year
Occupancy
Owner Occupied
SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Late 20th centuryDetached HouseEPC D

We've checked 10 risk factors against the available data for this property and believe a Level 2 HomeBuyer Report could be a suitable option for you.

From £695 · Includes VAT

Planning

Planning history

Applications and permits filed against 11a, Allen Close, Old St Mellons, Cardiff, CF3 5DH, sourced from the PlanIt planning register.

11a 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.

11a's estimated value is more than triple its earliest registered sale price (1997).

Current estimate

£489,000

Modelled from EPC, postcode comparables.

See how we calculated this
Last sold (1997)

£154,800

Recorded with HM Land Registry.

Sales timeline

  1. 21 August 1997Most recent

    £154,800

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

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 years held, 11a stands well clear of the street.

Price per m²

£1,027

Street avg £2,374

Strongly below

Floor Area

151 m²

Street avg 97 m²

Strongly above

Habitable Rooms

8 rooms

Street avg 6 rooms

Strongly above

CO₂ Emissions

5.5 t/year

Street avg 3.6 t/year

Strongly below
Before you decide

Everything you need to know about 11a

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

Pick your report · every report is £14.99

One time fee only - money back guarantee

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
Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£444k

1 Clos Hendre Gadno, Old St Mellons

CF3 5UJ

5 bed3 bath
£426k

1 Chapel Row Lane, Old St Mellons

CF3 5ST

3 bed
£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 11a, Allen Close, Old St Mellons, Cardiff, CF3 5DH. Each answer is also embedded as structured data for search engines.