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23 Colwyn Avenue, Winch Wen, Swansea, SA1 7EE

Estimated value

£148,000

  • Since the 2021 sale (£116,550)+27%
  • Against SA1 7EE's recent median (£129,000)+15%

Newest record on this page: April 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
4
From EPC
Floor area
71 m²
764 sq ft
Energy rating
C
Score 69
Council tax
Band A
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

£148,000

  • Against its 2021 sale (£116,550)+27%
  • Against SA1 7EE's recent median (£129,000)+15%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 23 Colwyn Avenue is modelled from its 71 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SA1 7EE. 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

    71 m² from the EPC lodged in March 2021

  • Sales of this home

    2 sales recorded, the latest in 2021

  • Recent sales in SA1 7EE

    5 sales, median £129,000 (2026–2021)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: April 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. 18 May 2021Most recent

    £116,550

    +58.6%over 3 years

  2. 1 November 2017

    £73,500

Median price across the last 5 sales in SA1 7EE: £129,000 (2026–2021).

Risks

What this page doesn't show

1 potential issue has already been flagged for 23 Colwyn Avenue, Winch Wen, Swansea, SA1 7EE. 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

One time fee only - money back guarantee

Overview

About 23 Colwyn Avenue

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

23 Colwyn Avenue is a semi-detached house in Winch Wen, Swansea, Swansea (SA1 7EE). It has a recorded floor area of 71 m² (around 764 sq ft), construction records dating it to 1930-1949 and council tax band A. The latest certificate (March 2021) shows a C (score 69), just inside the C band. When first surveyed in July 2017 the rating was F, the property has climbed 3 bands since. Between certificates, roof efficiency went from Very Poor to Good, hot-water efficiency went from Very Poor to Good and lighting went from Average to Very Good. The recommended improvements would push it to B (score 86).

Its energy rating outperforms most of the postcode (better than 70% of similar EPCs). Across 2017–2021, sale prices on this property compounded at 13.9% per year. Today's modelled estimate of £148,000 is 27% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£153/sq ft) was about 45.8% above the typical sold price in the postcode. Sold May 2021 for £116,550. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.

Before you decide

Everything you need to know about 23 Colwyn Avenue

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.
Current Certificate(1 of 2)
Mar 2021

EPC Rating

A
B
C
C69
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
2.5 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 17 March 2031

4 years remaining

Property Improvements

Changes detected from historical EPC data

Mar 2021from Jul 2017
EPC improved fromF21toC69
Heating Controls
ThermostatFull

Heating controls upgraded for better temperature management

Hot Water
ImmersionMain System

Hot water system upgraded

Roof Insulation
UninsulatedWell Insulated

Loft insulation installed or upgraded to 250mm+

Low Energy Lighting
25%100%

More low energy lighting installed

Planning

Planning history

Applications and permits filed against 23 Colwyn Avenue, Winch Wen, Swansea, SA1 7EE, sourced from the PlanIt planning register.

23 Colwyn Avenue has no planning applications on record.

3

But the area is active

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

On the street

Versus other Colwyn Avenue homes

Four headline reads against 10 similar houses on this street, drawn from the latest EPC and Land Registry data.

23 Colwyn Avenue is notably below the street on floor area.

Price per m²

£1,642

Street avg £1,557

Above

Floor Area

71 m²

Street avg 76 m²

Strongly below

Habitable Rooms

4 rooms

Street avg 4 rooms

Above

CO₂ Emissions

2.5 t/year

Street avg 2.7 t/year

Above
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

580/mo

Steady year-on-year across the wider district.

Nearest stop

0.3 km

Carmel Road — bus stop.

Nearest stops

  • Carmel RoadBus stop308m
  • WyngarthBus stop317m
  • Princess of Wales CourtBus stop324m
  • Lan CoedBus stop339m

Most reported crime locally

  • Violence & Sexual Offences3,276 reports35%
  • Anti-social Behaviour1,210 reports13%
  • Shoplifting1,135 reports12%
  • Public Order981 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

Early 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 £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.
£152k

1 Bronllan, Winch Wen

SA1 7EQ

2 bed1 bath
£137k

1 Bryn Morfa, Winch Wen

SA1 7LH

2 bed1 bath
£136k

1 Buckingham Road, Bonymaen

SA1 7AL

£134k

1 Aeron Place, Bonymaen

SA1 7BY

£134k

1 Caerphilly Avenue, Bonymaen

SA1 7HY

£167k

1 Blaencefn, Winch Wen

SA1 7LF

£130k

1 Carew Place, Winch Wen

SA1 7DX

£129k

1 Carreg Cennen Gardens, Bonymaen

SA1 7DJ

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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 Colwyn Avenue is modelled from its 71 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SA1 7EE. 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 Colwyn Avenue. 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 Colwyn Avenue was lodged in March 2021 at band C and is valid until March 2031. 2 certificates are on record, which shows how the home has changed.
Planning records
Planning applications are collected from local authority registers through PlanIt. None is matched to 23 Colwyn Avenue. 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 16 months, which places each incident at an approximate point. Schools and stops are measured in a straight line from SA1 7EE.
Council tax band
23 Colwyn Avenue is in council tax band A. 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 Colwyn Avenue, Winch Wen, Swansea, SA1 7EE. Each answer is also embedded as structured data for search engines.

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