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23 Ty Gwyn Gardens, Penylan, Cardiff, CF23 5BF

EPC B1 planning record

Estimated value

£1,127,000

  • Since the 2014 sale (£720,000)+57%
  • Against CF23 5BF's recent median (£840,000)+34%

Newest record on this page: January 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
Bedrooms
6
Bathrooms
4
Floor area
318 m²
3423 sq ft
Energy rating
B
Score 81
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

£1,127,000

  • Against its 2014 sale (£720,000)+57%
  • Against CF23 5BF's recent median (£840,000)+34%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 23 Ty Gwyn Gardens is modelled from its 318 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in CF23 5BF. 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

    318 m² from the EPC lodged in January 2026

  • Sales of this home

    1 sale recorded, the latest in 2014

  • Recent sales in CF23 5BF

    5 sales, median £840,000 (2024–2016)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: September 2024Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
Planning1 applicationFull 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.

23 Ty Gwyn Gardens valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 28 March 2014Most recent

    £720,000

Median price across the last 5 sales in CF23 5BF: £840,000 (2024–2016).

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 23 Ty Gwyn Gardens

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

23 Ty Gwyn Gardens is a six-bedroom detached house in Penylan, Cardiff, Cardiff (CF23 5BF). It has a recorded floor area of 318 m² (around 3423 sq ft) and construction records dating it to 2012-2021. The latest certificate (January 2026) returns a B (score 81), comfortably above the UK average. The rating has held steady at B across 3 certificates since June 2013. Between certificates, wall efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Average. This certificate was lodged in the last six months, so the rating reflects current condition. Other recorded features include a conservatory and outbuildings.

At 318 m² the property is well over the postcode median (234 m² across 22 EPCs), placing it in the larger end of the local stock. 6 bedrooms is on the larger side for this postcode, where 4 is the typical count. Today's modelled estimate of £1,127,000 sits 56.5% above the 2014 sale of £720,000. On a £-per-square-foot basis, the last sale (£210/sq ft) was about 21.5% below the postcode norm. One planning record on file: an extension approved in 2016. Past consents include an extension, meaningful when judging how the property has evolved. Last changed hands 12 years ago, in March 2014.

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

  • Bedrooms6
  • Bathrooms4
  • Dining roomYes
  • EnsuiteYes
  • StudyYes
  • ConservatoryYes

Outside

  • Private gardenYes
  • OutbuildingsYes

Building

  • RefurbishedYes
Before you decide

Everything you need to know about 23 Ty Gwyn Gardens

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.

The EPC has just been inspected, so the rating reflects current condition.

Current Certificate(1 of 3)
Jan 2026

EPC Rating

A
B
B81
C
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
5.2 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 29 January 2036

9 years remaining
Planning

Planning history

Applications and permits filed against 23 Ty Gwyn Gardens, Penylan, Cardiff, CF23 5BF, sourced from the PlanIt planning register.

1 application on record at 23 Ty Gwyn Gardens, Penylan, Cardiff, CF23 5BF

1decisions1extensions11documents1nearby
  1. Sept 2016
    ExtensionFull
    Outcome in report

    RAISE RIDGE. REAR DORMER. TWO FRONT APEX DORMERS

    Documents
    11 docs on file
    Reference
    16/01882/DCH
    Full record in report

Unlock 23 Ty Gwyn Gardens, Penylan, Cardiff, CF23 5BF's full planning history

You're seeing the shape of it. The report has the substance.

  • Every decision — granted, refused or withdrawn (1 on record)
  • All 1 application on this property in full, plus 1 notable nearby
  • The 11 documents, officer reports & conditions
  • What the pattern means for extending or converting here
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On the street

Versus other Ty Gwyn Gardens homes

Four headline reads against 22 similar houses on this street, drawn from the latest EPC and Land Registry data.

23 Ty Gwyn Gardens is notably below the street on price per m².

Price per m²

£2,264

Street avg £2,986

Strongly below

Floor Area

318 m²

Street avg 217 m²

Strongly above

CO₂ Emissions

5.2 t/year

Street avg 2.8 t/year

Strongly below

Years Held

12 years

Street avg 11 years

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

169/mo

Falling year-on-year across the wider district.

Nearest stop

0.1 km

Ty Gwyn School — bus stop.

Nearest stops

  • Ty Gwyn SchoolBus stop112m
  • Ty Gwyn SchBus stop124m
  • Ty Gwyn RoadBus stop136m
  • Cefn Coed CrescentBus stop203m

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 3 Building Survey

21st centuryDetached HouseEPC BDetached over 300m²Extended multiple times (2+ extensions)Permanent outbuildings

Because the property is a large detached home over 300m², has been extended more than once, and has permanent outbuildings, we believe a Level 3 building survey should be considered.

From £1,645 · 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.
£567k

1 Boverton Street

CF23 5ES

5 bed
£770k

1 Balaclava Road

CF23 5BB

4 bed3 bath
£669k

1 Bronwydd Close

CF23 5RA

4 bed2 bath
£666k

1 Beatty Avenue

CF23 5QR

4 bed1 bath
£620k

1 Clos Edno

CF23 5NF

4 bed2 bath
£619k

1 Clos Derwen

CF23 5HJ

4 bed2 bath
£550k

1 Crystal Avenue

CF23 5QJ

4 bed1 bath
£470k

1 Clos Tecwyn

CF23 5ND

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 23 Ty Gwyn Gardens is modelled from its 318 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in CF23 5BF. 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. 1 sale is recorded for 23 Ty Gwyn Gardens. 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 23 Ty Gwyn Gardens was lodged in January 2026 at band B and is valid until January 2036. 3 certificates are on record, which shows how the home has changed.
Planning records
Planning applications are collected from local authority registers through PlanIt. 1 application is matched to 23 Ty Gwyn Gardens. 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 5BF.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 23 Ty Gwyn Gardens, Penylan, Cardiff, CF23 5BF. Each answer is also embedded as structured data for search engines.

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