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23 Heol Y Twyn, Pontlliw, Swansea, SA4 9EU

Estimated value

£197,000

  • Since the 2020 sale (£150,000)+31%
  • Against SA4 9EU's recent median (£164,000)+20%

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
Semi-detached
Habitable rooms
5
From EPC
Floor area
69 m²
743 sq ft
Energy rating
E
Score 49
Council tax
Band C
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

£197,000

  • Against its 2020 sale (£150,000)+31%
  • Against SA4 9EU's recent median (£164,000)+20%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 23 Heol Y Twyn is modelled from its 69 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SA4 9EU. 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

    69 m² from the EPC lodged in October 2018

  • Sales of this home

    2 sales recorded, the latest in 2020

  • Recent sales in SA4 9EU

    5 sales, median £164,000 (2026–2024)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: January 2026Latest 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.

The latest sale landed in the post-pandemic price surge — useful context when reading the figure.

Sales timeline

  1. 2 November 2020Most recent

    £150,000

    +74.4%over 1 year

  2. 22 February 2019

    £86,000

Median price across the last 5 sales in SA4 9EU: £164,000 (2026–2024).

Risks

What this page doesn't show

1 potential issue has already been flagged for 23 Heol Y Twyn, Pontlliw, Swansea, SA4 9EU. The detail, evidence and what to ask about it are in the Risks Report.
  • Larger development activity nearbyIn 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 Heol Y Twyn

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

23 Heol Y Twyn is a semi-detached house in Pontlliw, Swansea, Swansea (SA4 9EU). It has a recorded floor area of 69 m² (around 743 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (October 2018) shows an E (score 49), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 85), a 3-band jump.

It lags the bulk of the postcode on energy efficiency (less efficient than 86% of similar EPCs). Across 2019–2020, sale prices on this property compounded at 38.9% per year. Today's modelled estimate of £197,000 is 31.3% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£202/sq ft) was about 55.9% above the typical sold price in the postcode. Most recent transfer: November 2020 at £150,000.

Before you decide

Everything you need to know about 23 Heol Y Twyn

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

Larger development activity nearby

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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.

Recommended upgrades on file would lift this property by multiple EPC bands.

Current Certificate
Oct 2018

EPC Rating

A
B
C
D
E
E49
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
4.7 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 29 October 2028

1 year remaining
Planning

Planning history

Applications and permits filed against 23 Heol Y Twyn, Pontlliw, Swansea, SA4 9EU, sourced from the PlanIt planning register.

23 Heol Y Twyn has no planning applications on record.

1

But the area is active

1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.

On the street

Versus other Heol Y Twyn homes

Four headline reads against 28 similar houses on this street, drawn from the latest EPC and Land Registry data.

23 Heol Y Twyn is notably below the street on co₂ emissions.

Price per m²

£2,174

Street avg £1,738

Above

Floor Area

69 m²

Street avg 71 m²

Above

Habitable Rooms

5 rooms

Street avg 5 rooms

Above

CO₂ Emissions

4.7 t/year

Street avg 3.2 t/year

Strongly below
Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Swansea district page.
Full Swansea report

Crime

160/mo

Falling year-on-year across the wider district.

Nearest stop

0.1 km

Post Office — bus stop.

Nearest stops

  • Post OfficeBus stop95m
  • Y LlanerchBus stop312m
  • Oaklands RoadBus stop672m
  • Glamorgan ArmsBus stop984m

Most reported crime locally

  • Violence & Sexual Offences974 reports44%
  • Anti-social Behaviour318 reports14%
  • Public Order242 reports11%
  • Criminal Damage & Arson201 reports9%

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 E

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 £495 · 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.
£199k

1 Clos Glanlliw, Pontlliw

SA4 9DW

£193k

1 Clordir Road, Pontlliw

SA4 9EY

£209k

1 Clos Llarwydden, Penllergaer

SA4 9ZP

3 bed
£210k

1 Dryslwyn Close, Penllergaer

SA4 9AW

£211k

1 Cherry Crescent, Penllergaer

SA4 9FF

£174k

1 Bron Afon, Tircoed Forest Village, Penllergaer

SA4 9QY

£173k

1 Bryn Bach, Tircoed Forest Village, Penllergaer

SA4 9RX

2 bed
£168k

1 Dillwyn Road, Penllergaer

SA4 9BT

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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 Heol Y Twyn is modelled from its 69 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SA4 9EU. 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. 2 sales are recorded for 23 Heol Y Twyn. 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 Heol Y Twyn was lodged in October 2018 at band E and is valid until October 2028. 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 23 Heol Y Twyn. 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 14 months, which places each incident at an approximate point. Schools and stops are measured in a straight line from SA4 9EU.
Council tax band
23 Heol Y Twyn is in council tax band C. 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 23 Heol Y Twyn, Pontlliw, Swansea, SA4 9EU. Each answer is also embedded as structured data for search engines.

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