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12 Allt Y Wennol, Pontprennau, Cardiff, CF23 8AS

3 sales on record2 planning records

Estimated value

£467,000

  • Since the 2017 sale (£298,000)+57%
  • Against CF23 8AS's recent median (£275,000)+70%

Newest record on this page: March 2026. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Detached
Habitable rooms
6
From EPC
Floor area
120 m²
1292 sq ft
Energy rating
C
Score 70
Council tax
Band F
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

£467,000

  • Against its 2017 sale (£298,000)+57%
  • Against CF23 8AS's recent median (£275,000)+70%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 12 Allt Y Wennol is modelled from its 120 m² EPC floor area, its 3 recorded sales and recent sales of comparable homes in CF23 8AS. 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

    120 m² from the EPC lodged in February 2020

  • Sales of this home

    3 sales recorded, the latest in 2017

  • Recent sales in CF23 8AS

    5 sales, median £275,000 (2026–2014)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: March 2026Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
Planning1 of 2 applicationsFull 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.

12 Allt Y Wennol valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 26 April 2017Most recent

    £298,000

    +41.9%over 12 years

  2. 26 August 2004

    £209,950

    +29.6%over 1 year

  3. 17 January 2003

    £161,995

Median price across the last 5 sales in CF23 8AS: £275,000 (2026–2014).

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 12 Allt Y Wennol

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

12 Allt Y Wennol is a detached house in Pontprennau, Cardiff, Cardiff (CF23 8AS). It has a recorded floor area of 120 m² (around 1292 sq ft), construction records dating it to 1996-2002 and council tax band F. The latest certificate (February 2020) shows a C (score 70). The rating has held steady at C across 2 certificates since September 2016. Between certificates, window efficiency dropped from Good to Average and lighting dropped from Very Good to Good. The recommended improvements would push it to B (score 82).

Across 2003–2017, sale prices on this property compounded at 4.4% per year. Today's modelled estimate of £467,000 sits 56.7% above the 2017 sale of £298,000. On a £-per-square-foot basis, the last sale (£231/sq ft) was about 20.6% above the typical sold price in the postcode. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. On the market in April 2017 and unlisted since — roughly 9 years.

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

  • Open-plan layoutYes
  • Dining roomYes
  • StudyYes

Outside

  • Private gardenRear
  • ParkingOff road

Building

  • RefurbishedYes
Before you decide

Everything you need to know about 12 Allt Y Wennol

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.
Current Certificate(1 of 2)
Feb 2020

EPC Rating

A
B
C
C70
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
3.9 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 4 February 2030

3 years remaining

Property Improvements

Changes detected from historical EPC data

Feb 2020from Sept 2016
Roof Insulation
InsulatedWell Insulated

Loft insulation upgraded to recommended levels

Planning

Planning history

Applications and permits filed against 12 Allt Y Wennol, Pontprennau, Cardiff, CF23 8AS, sourced from the PlanIt planning register.

12 Allt Y Wennol has 2 separate extension applications on the council record.

2 applications on record at 12 Allt Y Wennol, Pontprennau, Cardiff, CF23 8AS

2decisions2extensions12documents1nearby
  1. Oct 2017
    ExtensionOutline
    Outcome in report

    Extension: Single storey · Rear of property

    REAR GROUND FLOOR EXTENSIONS 4000MM OR LESS DEPTH FROM ORIGINAL MAIN HOUSE AND ANNEX WALLS(THE PROPOSED NEW FOOT PRINT WILL OCCUPY LESS THAN 50%OF THE GARDEN AREA)

    Documents
    7 docs on file
    Reference
    17/02026/DCH
    Full record in report
  2. More recent applications — locked
  3. ExtensionDecision

Unlock 12 Allt Y Wennol, Pontprennau, Cardiff, CF23 8AS'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 12 documents, officer reports & conditions
  • What the pattern means for extending or converting here
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On the street

Versus other Allt Y Wennol homes

Four headline reads against 6 similar houses on this street, drawn from the latest EPC and Land Registry data.

EPC Rating for 12 Allt Y Wennol lags the street by a wide margin.

Price per m²

£2,483

Street avg £2,641

Above

Floor Area

120 m²

Street avg 114 m²

On par

Habitable Rooms

6 rooms

Street avg 6 rooms

On par

CO₂ Emissions

3.9 t/year

Street avg 3.2 t/year

Below
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

169/mo

Falling year-on-year across the wider district.

Nearest stop

0.2 km

Clos Cwm Du — bus stop.

Nearest stops

  • Clos Cwm DuBus stop242m
  • Sindercombe ClBus stop279m
  • Pentwyn DriveBus stop305m
  • The FarthingsBus stop332m

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.

SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Late 20th centuryDetached 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 £695 · 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.
£488k

1 Allt Y Wennol, Pontprennau

CF23 8AS

4 bed2 bath
£503k

1 Acorn Grove, Pontprennau

CF23 8NG

4 bed2 bath
£430k

1 Capel Edeyrn, Pontprennau

CF23 8XJ

£417k

1 Clos Nant Y Cwm, Pontprennau

CF23 8LG

4 bed2 bath
£401k

1 Chamomile Close, Pontprennau

CF23 8RE

£401k

1 Clos Nant Mwlan, Pontprennau

CF23 8NA

4 bed2 bath
£386k

1 Ambergate Drive, Pontprennau

CF23 8AX

£381k

1 Blackberry Way, Pontprennau

CF23 8FE

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 Allt Y Wennol is modelled from its 120 m² EPC floor area, its 3 recorded sales and recent sales of comparable homes in CF23 8AS. 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. 3 sales are recorded for 12 Allt Y Wennol. 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 Allt Y Wennol was lodged in February 2020 at band C and is valid until February 2030. 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 12 Allt Y Wennol. 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 8AS.
Council tax band
12 Allt Y Wennol is in council tax band F. 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 Allt Y Wennol, Pontprennau, Cardiff, CF23 8AS. Each answer is also embedded as structured data for search engines.

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