What kind of home is 21 Colwyn Avenue, SA1 7EE?

21 Colwyn Avenue, SA1 7EE is a semi-detached house.

What did 21 Colwyn Avenue, SA1 7EE sell for?

21 Colwyn Avenue, SA1 7EE last sold for £130,000 in April 2026. Source: HM Land Registry.

What energy rating does 21 Colwyn Avenue, SA1 7EE have?

The current EPC rating for 21 Colwyn Avenue, SA1 7EE is D with a score of 66 out of 100, lodged in October 2025. It has improved from a E recorded in May 2013. The assessor estimates the property could reach a C. Source: EPC Register.

How big is 21 Colwyn Avenue, SA1 7EE?

21 Colwyn Avenue, SA1 7EE has a recorded floor area of 80 m² (861 sq ft). That makes it about 10% larger than the median EPC-recorded property in SA1 7EE. Source: EPC Register.

What heating system does 21 Colwyn Avenue, SA1 7EE use?

The latest EPC at 21 Colwyn Avenue, SA1 7EE records mains gas as the main heating fuel. Source: EPC Register.

What is the council tax band for 21 Colwyn Avenue, SA1 7EE?

21 Colwyn Avenue, SA1 7EE is in council tax band A. That sits at the lower end of the A-H ladder, typically reflecting smaller floor areas or lower 1991 valuations.

Which area is 21 Colwyn Avenue, SA1 7EE in?

21 Colwyn Avenue, SA1 7EE sits in Winch Wen, Swansea, Swansea. It falls within the SA1 postcode district.

What is crime like near 21 Colwyn Avenue, SA1 7EE?

Police records around 21 Colwyn Avenue, SA1 7EE show an average of 580 reported crimes per month over the last 16 months. Violent crime makes up roughly 35% of reports, the most common category. The overall trend is broadly stable. Source: Police UK.

How well connected is 21 Colwyn Avenue, SA1 7EE?

The closest bus stop to 21 Colwyn Avenue, SA1 7EE is Carmel Road, 308m away. In total there are 30 bus stops within the surrounding area.

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

Property type

Semi-detached

Habitable rooms

From EPC

Floor area

80 m²

861 sq ft

Energy rating

Score 66

Council tax

Band A

Tenure

Owner Occupied

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Overview

About 21 Colwyn Avenue

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

21 Colwyn Avenue is a semi-detached house in Winch Wen, Swansea, Swansea (SA1 7EE). It has a recorded floor area of 80 m² (around 861 sq ft), construction records dating it to 1950-1966 and council tax band A. The latest certificate (October 2025) shows a D (score 66), on the cusp of jumping into the C band. When first surveyed in May 2013 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Average, hot-water efficiency went from Poor to Good and lighting went from Average to Good; while wall efficiency dropped from Good to Poor and window efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 78).

A recent sale: £130,000 in April 2026. Today's modelled estimate of £164,000 is 26.2% above the 2026 sale price. On a £-per-square-foot basis, the last sale (£151/sq ft) was about 50.4% above the typical sold price in the postcode.

Before you decide

Everything you need to know about 21 Colwyn Avenue

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

Larger development activity nearby

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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)

Oct 2025

EPC Rating

D66

Main Heating

Gas

Main Fuel

Gas

Hot Water

Good

Windows

Poor

CO2 Emissions

2.9 t/year

Occupancy

Owner Occupied

Certificate validity

Valid until 22 October 2035

9 years remaining

Property Improvements

Changes detected from historical EPC data

Oct 2025from May 2013

EPC improved fromE47toD66

Heating Controls

Prog + StatFull

Heating controls upgraded for better temperature management

Hot Water

Main (No Stat)Main System

Hot water system upgraded

Roof Insulation

UninsulatedInsulated

Roof insulation improved

Low Energy Lighting

36%100%

More low energy lighting installed

Get a survey for this property

Level 2 HomeBuyer Report

Mid 20th centurySemi-Detached HouseEPC D

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 21 Colwyn Avenue, Winch Wen, Swansea, SA1 7EE, sourced from the PlanIt planning register.

21 Colwyn Avenue has no planning applications on record.

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.

21 Colwyn Avenue valuation sits well clear of the typical sold price in this postcode.

Current estimate

£164,000

Modelled from EPC, postcode comparables.

See how we calculated this

Last sold (2026)

£130,000

Recorded with HM Land Registry.

Sales timeline

1 April 2026Most recent
£130,000

Median price across the last 5 sales in SA1 7EE: £120,000 (2025–2021).

Nearby sales in SA1 7EE

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.

Years Held for 21 Colwyn Avenue lags the street by a wide margin.

Price per m²

£1,625

Street avg £1,559

On par

Floor Area

80 m²

Street avg 75 m²

Strongly above

Habitable Rooms

3 rooms

Street avg 4 rooms

Below

CO₂ Emissions

2.9 t/year

Street avg 2.6 t/year

Below

Before you decide

Everything you need to know about 21 Colwyn Avenue

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

Larger development activity nearby

Pick your report · from £14.99

One time fee only - money back guarantee

The data behind every report

Comparables

Similar properties nearby

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

£167k

1 Blaencefn, Winch Wen

SA1 7LF

£170k

1 Bryn Helyg, Winch Wen

SA1 7LP

£152k

1 Bronllan, Winch Wen

SA1 7EQ

2 bed1 bath

£190k

1 Cwm Chapel Road, Bonymaen

SA1 7DH

£194k

1 Bellerphon Court, Copper Quarter, Pentrechwyth

SA1 7FS

2 bed1 bath

£196k

1 Brynymor Cottages, Tydraw Road, Bonymaen

SA1 7BH

£137k

1 Bryn Morfa, Winch Wen

SA1 7LH

2 bed1 bath

£197k

1 Crymlyn Terrace, Bonymaen

SA1 7BQ

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.

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 21 Colwyn Avenue, Winch Wen, Swansea, SA1 7EE. Each answer is also embedded as structured data for search engines.