Tan Y Castell, Flat 4, 50 Great Darkgate Street, Aberystwyth, SY23 1DW
About Tan Y Castell
Tan Y Castell is an end-of-terrace house in Aberystwyth (SY23 1DW). It has a recorded floor area of 36 m² (around 388 sq ft), construction records dating it to before 1900 and council tax band B. The latest certificate (November 2025) shows a C (score 69), just inside the C band. When first surveyed in April 2009 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Poor; while hot-water efficiency dropped from Average to Very Poor. The recommended improvements would push it to B (score 81). Main heating runs on electricity. At 36 m² this is the 3rd smallest of 10 units on EPC record in Tan Y Castell, where floor areas span 33–45 m². The building's EPC ratings span C to B, with this unit at the bottom. On EPC score it ranks last in the building (69 versus a best of 82).
Know exactly what you're buying at Tan Y Castell
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
Tan Y Castell's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Mechanical ventilation installed
Heating system changed
Heating controls upgraded for better temperature management
Hot water system changed
High performance glazing installed
Wall insulation improved
Planning history
Tan Y Castell has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
Sales history & valuation
Tan Y Castell has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£124,000
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 1DW: £238,000 (2024–2011).
Nearby sales in SY23 1DW
62 Great Darkgate Street, Aberystwyth, SY23 1DW
Sold Dec 2024
£310,00054 Great Darkgate Street, Aberystwyth, SY23 1DW
Sold May 2024
£150,00011 St James Mews, Great Darkgate Street, Aberystwyth, SY23 1DW
Sold Sept 2011
£137,50010 St James Mews, Great Darkgate Street, Aberystwyth, SY23 1DW
Sold Sept 2003
£69,99566 Great Darkgate Street, Aberystwyth, SY23 1DW
Sold Apr 2001
£100,000
Everything we know about Tan Y Castell, 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?
Versus other Great Darkgate Street homes
CO₂ Emissions for Tan Y Castell runs comfortably ahead of the street norm.
EPC Rating
69 (C)
Street avg 68 (D)
Floor Area
36 m²
Street avg 44 m²
CO₂ Emissions
0.5 t/year
Street avg 2.6 t/year
Habitable Rooms
2 rooms
Street avg 2 rooms
Similar properties nearby
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4a, Flat 1, Chalybeate Street
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4a, Flat 3, Chalybeate Street
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14 Tabernacle Flats, Powell Street
SY23 1RQ
6a, Flat 3, Chalybeate Street
SY23 1HS
6a, Flat 2, Bridge Street
SY23 1PY
6a, Flat 4, Bridge Street
SY23 1PY
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
Great Darkgate Street Top — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.