11 Custom House Street, Aberystwyth, SY23 1JR
About 11 Custom House Street
11 Custom House Street is a four-bedroom mid-terrace house in Aberystwyth (SY23 1JR). It has a recorded floor area of 130 m² (around 1399 sq ft), construction records dating it to 1900-1929 and council tax band E. The latest certificate (July 2018) shows an E (score 44), well below the UK norm with real room to improve. Earlier certificates rated it D (June 2013); the latest reading is one band lower. Between certificates, roof efficiency went from Very Poor to Good, window efficiency went from Poor to Average and lighting went from Good to Very Good; while hot-water efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 83), a 3-band jump. Other recorded features include outbuildings and a basement.
At 130 m² it's 17.1% larger than the typical home in the postcode (111 m² median across 19 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 84% of similar EPCs). Across 1999–2018, sale prices on this property compounded at 5.1% per year. Today's modelled estimate of £248,000 is 31.9% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£134/sq ft) was about 39.6% above the typical sold price in the postcode. Last sale on file: £188,000 in November 2018.
Know exactly what you're buying at 11 Custom House 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
What this property has
Inside
- Bedrooms4
- Bathrooms2
- Dining roomYes
- BasementYes
Outside
- Private gardenYes
- OutbuildingsYes
Energy performance
11 Custom House Street's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Hot water system changed
Window efficiency improved
Roof insulation improved
Planning history
11 Custom House Street has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
Sales history & valuation
11 Custom House Street has more than doubled in price since the earliest registered sale in 1999.
£248,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.1% per year over 19 years.
£188,000
Growth on file: 5.1% per year over 19 years.
Sales timeline
13 November 2018Most recent
£188,000
-3.1%over 13 years14 July 2005
£194,000
+171.3%over 6 years6 June 1999
£71,500
Median price across the last 5 sales in SY23 1JR: £236,000 (2025–2022).
Nearby sales in SY23 1JR
10 Custom House Street, Aberystwyth, SY23 1JR
Sold Aug 2025
£195,00012 Custom House Street, Aberystwyth, SY23 1JR
Sold May 2024
£225,00019 Custom House Street, Aberystwyth, SY23 1JR
Sold Mar 2024
£380,0002 Custom House Street, Aberystwyth, SY23 1JR
Sold Jun 2022
£250,00014 Custom House Street, Aberystwyth, SY23 1JR
Sold Feb 2022
£236,000
Everything we know about 11 Custom House 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?

Versus other Custom House Street homes
11 Custom House Street is notably below the street on epc rating.
Price per m²
£1,446
Street avg £1,422
Floor Area
130 m²
Street avg 150 m²
Habitable Rooms
6 rooms
Street avg 7 rooms
CO₂ Emissions
9.3 t/year
Street avg 7.0 t/year
Similar properties nearby
1 Coed Y Buarth
SY23 1NE
1 Edgehill Road
SY23 1LZ
1 Broadway, Llangawsai
SY23 1HF
1 Cysgod Y Llan, Southgate
SY23 1RY
1 Custom House Street
SY23 1JR
1 Clos Y Drindod, Buarth Road
SY23 1LR
1 Bridgend Cottages, Trefechan
SY23 1BA
1 Clos Padarn, Llangawsai
SY23 1HN
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
0.2 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.