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3 William Street, Ystradgynlais, Swansea, SA9 1AT

Property type
End terrace
Habitable rooms
5
From EPC
Floor area
87 m²
936 sq ft
Energy rating
E
Score 45
Council tax
Band B
Tenure
Owner Occupied
Overview

About 3 William Street

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

3 William Street is an end-of-terrace house in Ystradgynlais, Swansea, Swansea (SA9 1AT). It has a recorded floor area of 87 m² (around 936 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (November 2018) shows an E (score 45), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 85), a 3-band jump.

Across 1997–2019, sale prices on this property compounded at 3.8% per year. Today's modelled estimate of £155,000 sits 82.4% above the 2019 sale of £85,000. It lags the bulk of the postcode on energy efficiency (less efficient than 77% of similar EPCs). Last sale on file: £85,000 in April 2019.

Before you offer

Know exactly what you're buying at 3 William Street

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.

3 William Street's carbon output runs well above what efficient homes in the postcode produce.

EPC Rating

A
B
C
D
E
E45
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
6.6 t/year
Occupancy
Owner Occupied
Planning

Planning history

Applications and permits filed against 3 William Street, Ystradgynlais, Swansea, SA9 1AT, sourced from the PlanIt planning register.

3 William Street 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 3 William Street

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.

3 William Street has more than doubled in price since the earliest registered sale in 1997.

Current estimate

£155,000

Modelled from EPC, postcode comparables and a sale-price growth of 3.8% per year over 22 years.

See how we calculated this
Last sold (2019)

£85,000

Growth on file: 3.8% per year over 22 years.

Sales timeline

  1. 2 April 2019Most recent

    £85,000

    +123.7%over 21 years
  2. 1 September 1997

    £38,000

Median price across the last 5 sales in SA9 1AT: £127,000 (2025–2019).

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Everything we know about 3 William Street, 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 William Street homes

Four headline reads against 13 similar houses on this street, drawn from the latest EPC and Land Registry data.

On epc rating, 3 William Street runs well behind the street norm.

Price per m²

£977

Street avg £1,109

On par

Floor Area

87 m²

Street avg 87 m²

On par

Habitable Rooms

5 rooms

Street avg 4 rooms

Above

CO₂ Emissions

6.6 t/year

Street avg 4.8 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.

Crime

6/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

Glanrhyd Hospital — 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 3 William Street, Ystradgynlais, Swansea, SA9 1AT. Each answer is also embedded as structured data for search engines.