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

4 sales on record

Estimated value

£261,000

  • Since the 2014 sale (£178,000)+47%
  • Against CF3 5DH's recent median (£258,000)+1%

Newest record on this page: June 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
3
Bathroom
1
Floor area
70 m²
753 sq ft
Energy rating
C
Score 71
Council tax
Band E
Tenure
Owner Occupied
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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

£261,000

  • Against its 2014 sale (£178,000)+47%
  • Against CF3 5DH's recent median (£258,000)+1%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 12 Allen Close is modelled from its 70 m² EPC floor area, its 4 recorded sales and recent sales of comparable homes in CF3 5DH. 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

    70 m² from the EPC lodged in January 2014

  • Sales of this home

    4 sales recorded, the latest in 2014

  • Recent sales in CF3 5DH

    5 sales, median £258,000 (2025–2020)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: June 2025Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
PlanningNone on this homeFull history, plus nearby schemes
Flood riskNot shownIncluded
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 1997.

Sales timeline

  1. 21 March 2014Most recent

    £178,000

    -1.1%over 6 years

  2. 12 April 2007

    £180,000

    +100.1%over 5 years

  3. 15 August 2001

    £89,950

    +29.6%over 3 years

  4. 18 December 1997

    £69,400

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

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

One time fee only - money back guarantee

Overview

About 12 Allen Close

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

12 Allen Close is a three-bedroom semi-detached house in Old St. Mellons, Cardiff, Cardiff (CF3 5DH). It has a recorded floor area of 70 m² (around 753 sq ft), construction records dating it to 1996-2002 and council tax band E. The latest certificate (January 2014) shows a C (score 71). The recommended improvements would push it to B (score 89). The latest certificate is from January 2014, so improvements made since then won't be reflected.

12 years since the last transfer (March 2014). Across the public record there are 4 sales, relatively high churn for a single property. Across 1997–2014, sale prices on this property compounded at 6% per year. Today's modelled estimate of £261,000 is 46.6% above the 2014 sale price. On a £-per-square-foot basis, the last sale (£236/sq ft) was about 68.5% above the typical sold price in the postcode. At 70 m² it's 28.9% smaller than the typical home in the postcode (99 m² median across 24 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

  • Bedrooms3
  • Bathrooms1
  • Dining roomYes
  • CloakroomYes
  • EnsuiteYes

Outside

  • Private gardenYes
Before you decide

Everything you need to know about 12 Allen Close

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.

12 Allen Close'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 08 Jan 2024

Current Certificate
Jan 2014

EPC Rating

A
B
C
C71
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
2.3 t/year
Occupancy
Owner Occupied

Certificate validity

Expired on 8 January 2024

New assessment needed to sell or let
Planning

Planning history

Applications and permits filed against 12 Allen Close, Old St Mellons, Cardiff, CF3 5DH, sourced from the PlanIt planning register.

12 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.

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.

12 Allen Close is notably below the street on floor area.

Price per m²

£2,543

Street avg £2,310

Above

Floor Area

70 m²

Street avg 100 m²

Strongly below

Habitable Rooms

5 rooms

Street avg 6 rooms

Below

CO₂ Emissions

2.3 t/year

Street avg 3.7 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

0.2 km

Llaneirwg Way — bus stop.

Nearest stops

  • Llaneirwg WayBus stop176m
  • Vaindre LaneBus stop360m
  • Wern Fawr LaneBus stop377m
  • Tyrwinch RoadBus stop407m

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.

SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Late 20th centurySemi-Detached HouseEPC C

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 £545 · Includes VAT

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£264k

1 Brendon Close, Llanrumney

CF3 5RJ

3 bed1 bath
£269k

1 Axbridge Crescent, Llanrumney

CF3 5TJ

3 bed
£200k

1 Bronte Close, Llanrumney

CF3 5PN

3 bed
£197k

1 Banwell Place, Llanrumney

CF3 5SH

3 bed
£263k

1 Captain S View, Braunton Crescent, Llanrumney

CF3 5AD

2 bed1 bath
£443k

1 Chapel Row Lane, Old St Mellons

CF3 5ST

3 bed
£150k

1 Bluebell Drive

CF3 5RA

3 bed
£538k

1 Courtenay Close, Old St Mellons

CF3 5UL

4 bed2 bath

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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 12 Allen Close is modelled from its 70 m² EPC floor area, its 4 recorded sales and recent sales of comparable homes in CF3 5DH. 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 12 Allen 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 12 Allen Close was lodged in January 2014 at band C and expired in January 2024, so a new one is needed to sell or let. Floor area, heating and insulation details on this page come from it.
Planning records
Planning applications are collected from local authority registers through PlanIt. None is matched to 12 Allen 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 5DH.
Council tax band
12 Allen Close is in council tax band E. 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 12 Allen Close, Old St Mellons, Cardiff, CF3 5DH. Each answer is also embedded as structured data for search engines.

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