1 Castle Street, Aberystwyth, SY23 1DT
About 1 Castle Street
1 Castle Street is a mid-terrace house in Aberystwyth (SY23 1DT). It has a recorded floor area of 52 m² (around 560 sq ft), construction records dating it to before 1900 and council tax band A. At 52 m² this is the smallest unit on EPC record across the building (52–120 m²). The building's EPC ratings span E to C, with this unit at the top. The latest certificate (June 2016) shows a C (score 73). The rating has held steady at C across 2 certificates since June 2016. Between certificates, window efficiency went from Poor to Good; while lighting dropped from Very Good to Very Poor. The latest certificate is from June 2016, so improvements made since then won't be reflected.
At 52 m² it sits well below the postcode median (92 m² across 6 EPCs), making it one of the more compact homes locally.
Know exactly what you're buying at 1 Castle Street
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 03 Jun 2026
EPC Rating
Property Improvements
Changes detected from historical EPC data
Windows upgraded, improving insulation
Low energy lighting percentage decreased
Planning history
1 Castle Street has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
Sales history & valuation
1 Castle Street has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£123,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in SY23 1DT: £189,950 (2024–2004).
Nearby sales in SY23 1DT
Everything we know about 1 Castle Street, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Pier Street — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.