What type of property is 20 Alder Avenue, SA9 1AQ?

20 Alder Avenue, SA9 1AQ is a semi-detached house.

What did 20 Alder Avenue, SA9 1AQ sell for?

20 Alder Avenue, SA9 1AQ last sold for £230,000 in January 2024, around 2 years ago. Source: HM Land Registry.

How energy efficient is 20 Alder Avenue, SA9 1AQ?

The current EPC rating for 20 Alder Avenue, SA9 1AQ is E with a score of 49 out of 100, lodged in October 2023. The assessor estimates the property could reach a B. Source: EPC Register.

What is the floor area of 20 Alder Avenue, SA9 1AQ?

20 Alder Avenue, SA9 1AQ has a recorded floor area of 90 m² (969 sq ft). That makes it about 10% smaller than the median EPC-recorded property in SA9 1AQ. Source: EPC Register.

How is 20 Alder Avenue, SA9 1AQ heated?

The latest EPC at 20 Alder Avenue, SA9 1AQ records mains gas as the main heating fuel. Source: EPC Register.

What council tax band is 20 Alder Avenue, SA9 1AQ?

20 Alder Avenue, SA9 1AQ is in council tax band D.

Where is 20 Alder Avenue, SA9 1AQ located?

20 Alder Avenue, SA9 1AQ sits in Ystradgynlais, Swansea, Swansea. It falls within the SA9 postcode district.

Is 20 Alder Avenue, SA9 1AQ in a safe area?

Police records around 20 Alder Avenue, SA9 1AQ show an average of 6 reported crimes per month over the last 9 months. Violent crime makes up roughly 72% of reports, the most common category. The overall trend is broadly stable. Source: Police UK.

What is the nearest station to 20 Alder Avenue, SA9 1AQ?

The closest bus stop to 20 Alder Avenue, SA9 1AQ is Post Office, 205m away. In total there are 30 bus stops within the surrounding area.

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20 Alder Avenue, Ystradgynlais, Swansea, SA9 1AQ

Property type

Semi-detached

Habitable rooms

From EPC

Floor area

90 m²

969 sq ft

Energy rating

Score 49

Council tax

Band D

Tenure

Owner Occupied

Overview

About 20 Alder Avenue

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

20 Alder Avenue is a semi-detached house in Ystradgynlais, Swansea, Swansea (SA9 1AQ). It has a recorded floor area of 90 m² (around 969 sq ft), construction records dating it to 1950-1966 and council tax band D. The latest certificate (October 2023) shows an E (score 49), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 82), a 3-band jump.

It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs). Today's modelled estimate of £266,000 is 15.7% above the 2024 sale price. On a £-per-square-foot basis, the last sale (£237/sq ft) was about 58.2% above the typical sold price in the postcode. Sold January 2024 for £230,000.

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Know exactly what you're buying at 20 Alder Avenue

Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.

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Valuation

against the asking price

Risks

planning & flood

Sold prices

similar homes nearby

Trends

the local market

Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

20 Alder Avenue's carbon output runs well above what efficient homes in the postcode produce.

EPC Rating

E49

Main Heating

Gas

Main Fuel

Gas

Hot Water

Average

Windows

Average

CO2 Emissions

6.7 t/year

Occupancy

Owner Occupied

Planning

Planning history

Applications and permits filed against 20 Alder Avenue, Ystradgynlais, Swansea, SA9 1AQ, sourced from the PlanIt planning register.

20 Alder Avenue has no planning applications on record.

Notable planning nearby

2applications of note in the surrounding area

Before you offer

We flagged 1 thing worth checking at 20 Alder Avenue

Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.

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Price

Sales history & valuation

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

20 Alder Avenue valuation sits well clear of the typical sold price in this postcode.

Current estimate

£266,000

Modelled from EPC, postcode comparables.

See how we calculated this

Last sold (2024)

£230,000

Recorded with HM Land Registry.

Sales timeline

10 January 2024Most recent
£230,000

Median price across the last 5 sales in SA9 1AQ: £248,000 (2025–2021).

Nearby sales in SA9 1AQ

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Everything we know about 20 Alder Avenue, in one report

What it's really worth, what could be wrong, and the planning, sales and area data in full.

What we flagged

Larger development activity nearby

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On the street

Versus other Alder Avenue homes

Four headline reads against 14 similar houses on this street, drawn from the latest EPC and Land Registry data.

On price per m², 20 Alder Avenue stands well clear of the street.

Price per m²

£2,556

Street avg £1,873

Strongly above

Floor Area

90 m²

Street avg 102 m²

Below

Habitable Rooms

5 rooms

Street avg 5 rooms

Below

CO₂ Emissions

6.7 t/year

Street avg 5.2 t/year

Strongly below

Comparables

Similar properties nearby

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

£266k

1 Caedegar Road, Ystradgynlais

SA9 1LW

£272k

1 Brynawel Villas, Brecon Road, Ystradgynlais

SA9 1HQ

3 bed

£256k

1 Brynygroes Cottages, Ystradgynlais

SA9 1LE

3 bed

£248k

1 Abercrave Villas, Heol Tawe, Abercrave

SA9 1TN

3 bed

£240k

1 2 Metz Cottages, Ystradgynlais

SA9 1SB

3 bed1 bath

£228k

1 Astoria Place, Ystradgynlais

SA9 1HW

£221k

1 Caerbont Cottages, Abercrave

SA9 1SP

£201k

1 Caemaen, Brecon Road, Penycae

SA9 1YN

2 bed

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

6/mo

Steady year-on-year across the wider district.

Nearest stop

0.2 km

Post Office — bus stop.

Go deeper on the local area

The full report breaks down crime, transport links, schools and air quality in depth.

Map

Everything within walking distance

Schools, transport stops and scenic spots near this property — 30 points of interest in total.

FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 20 Alder Avenue, Ystradgynlais, Swansea, SA9 1AQ. Each answer is also embedded as structured data for search engines.