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

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
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 £154,000 is 32.1% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£153/sq ft) was about 52% 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

Pick your report · every report is £14.99

One time fee only - money back guarantee

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

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

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

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.

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

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

Current estimate

£154,000

Modelled from EPC, postcode comparables and a sale-price growth of 13.9% per year over 4 years.

See how we calculated this
Last sold (2021)

£116,550

Growth on file: 13.9% per year over 4 years.

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: £120,000 (2025–2017).

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 £1,545

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
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

Pick your report · every report is £14.99

One time fee only - money back guarantee

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
Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£148k

1 Bryn Morfa, Winch Wen

SA1 7LH

2 bed1 bath
£144k

1 Aeron Place, Bonymaen

SA1 7BY

£165k

1 Bronllan, Winch Wen

SA1 7EQ

2 bed1 bath
£141k

1 Buckingham Road, Bonymaen

SA1 7AL

£170k

1 Bryn Helyg, Winch Wen

SA1 7LP

£138k

1 Carreg Cennen Gardens, Bonymaen

SA1 7DJ

£138k

1 Dartford Drive, Bonymaen

SA1 7DU

£136k

1 Carew Place, Winch Wen

SA1 7DX

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

3/mo

Steady year-on-year across the wider district.

Nearest stop

0.3 km

Carmel Road — bus stop.

Go deeper on the local area

A Local Area report breaks down crime, transport links, schools and air quality in depth.

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.