20 St Nicholas Square, Maritime Quarter, Swansea, SA1 1UG
About 20 St Nicholas Square
20 St Nicholas Square is a one-bedroom detached house in Maritime Quarter, Swansea, Swansea (SA1 1UG). It has a recorded floor area of 42 m² (around 452 sq ft), construction records dating it to 1983-1990 and council tax band C. At 42 m² this is the 8th smallest of 23 units on EPC record in the building, where floor areas span 39–53 m². The building's EPC ratings span D to C, with this unit at the top. The latest certificate (April 2021) shows a C (score 72). When first surveyed in May 2011 the rating was D, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Poor to Average and lighting went from Good to Very Good.
It hasn't traded since September 2003, a hold of 23 years that's notably long for the area. Today's modelled estimate of £110,000 is 29.4% above the 2003 sale price.
What this property has
Inside
- Bedrooms1
- Bathrooms1
Building
- RefurbishedYes
Everything you need to know about 20 St Nicholas Square
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Energy performance
20 St Nicholas Square's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Hot water efficiency improved
More low energy lighting installed
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Level 2 HomeBuyer Report
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Planning history
20 St Nicholas Square has no planning applications on record.
But the area is active
7 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
20 St Nicholas Square valuation sits well clear of the typical sold price in this postcode.
£110,000
Modelled from EPC, postcode comparables.
£85,000
Recorded with HM Land Registry.
Sales timeline
18 September 2003Most recent
£85,000
Median price across the last 5 sales in SA1 1UG: £90,000 (2024–2018).
Nearby sales in SA1 1UG
1 St Nicholas Square, Maritime Quarter, Swansea, SA1 1UG
Sold Dec 2024
£90,00014 St Nicholas Square, Maritime Quarter, Swansea, SA1 1UG
Sold Oct 2021
£85,0002 St Nicholas Square, Maritime Quarter, Swansea, SA1 1UG
Sold Dec 2018
£98,00025 St Nicholas Square, Maritime Quarter, Swansea, SA1 1UG
Sold Nov 2018
£120,00016 St Nicholas Square, Maritime Quarter, Swansea, SA1 1UG
Sold Apr 2017
£90,000
Versus other St Nicholas Square homes
20 St Nicholas Square outperforms the street on years held by a wide margin.
Price per m²
£2,024
Street avg £1,943
Floor Area
42 m²
Street avg 43 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
1.5 t/year
Street avg 1.4 t/year
Everything you need to know about 20 St Nicholas Square
The true value, the hidden risks and the full sale history, in one report.
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The neighbourhood at a glance
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Ferrara Square — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.






