21 Crymlyn Street, Port Tennant, Swansea, SA1 8NX
About 21 Crymlyn Street
21 Crymlyn Street is a two-bedroom mid-terrace house in Port Tennant, Swansea, Swansea (SA1 8NX). It has a recorded floor area of 82 m² (around 883 sq ft), construction records dating it to before 1900 and council tax band B. The latest certificate (July 2014) shows a D (score 58), a step below the typical UK home. The rating has held steady at D across 2 certificates since January 2014. Between certificates, roof efficiency went from Very Poor to Good and window efficiency went from Average to Good; while lighting dropped from Good to Average. The recommended improvements would lift it to B (score 81), a 2-band jump. The latest certificate is from July 2014, so improvements made since then won't be reflected.
Across 2006–2014, sale prices on this property compounded at 0.8% per year. Today's modelled estimate of £129,000 is 38% above the 2014 sale price. On a £-per-square-foot basis, the last sale (£106/sq ft) was about 31.3% above the typical sold price in the postcode. Last changed hands 12 years ago, in May 2014.
What this property has
Inside
- Bedrooms2
Everything you need to know about 21 Crymlyn Street
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee

Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 02 Jul 2024
EPC Rating
Property Improvements
Changes detected from historical EPC data
Window efficiency improved
Loft insulation installed or upgraded to 250mm+
Low energy lighting percentage decreased
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
21 Crymlyn Street has no planning applications on record.
But the area is active
53 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
21 Crymlyn Street valuation sits well clear of the typical sold price in this postcode.
£129,000
Modelled from EPC, postcode comparables and a sale-price growth of 0.8% per year over 7 years.
£93,500
Growth on file: 0.8% per year over 7 years.
Sales timeline
15 May 2014Most recent
£93,500
+6.3%over 7 years21 November 2006
£88,000
Median price across the last 5 sales in SA1 8NX: £110,000 (2025–2021).
Nearby sales in SA1 8NX
23 Crymlyn Street, Port Tennant, Swansea, SA1 8NX
Sold Apr 2025
£118,00020 Crymlyn Street, Port Tennant, Swansea, SA1 8NX
Sold Nov 2023
£118,00025 Crymlyn Street, Port Tennant, Swansea, SA1 8NX
Sold Apr 2022
£100,00032 Crymlyn Street, Port Tennant, Swansea, SA1 8NX
Sold Nov 2021
£110,00036 Crymlyn Street, Port Tennant, Swansea, SA1 8NX
Sold Sept 2021
£110,000
Versus other Crymlyn Street homes
Price per m²
£1,140
Street avg £899
Floor Area
82 m²
Street avg 82 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
3.9 t/year
Street avg 3.9 t/year
Everything you need to know about 21 Crymlyn Street
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee

Similar properties nearby
1 Kilvey Terrace, St Thomas
SA1 8BA
1 Danygraig Road, Port Tennant
SA1 8LY
1 Kinley Street, St Thomas
SA1 8HE
1 Elmhurst Crescent, St Thomas
SA1 8EA
1 Balaclava Street, St Thomas
SA1 8BS
1 Grenfell Park Road, St Thomas
SA1 8EY
1 Ivy Bush Court, St Thomas
SA1 8DQ
1 Canaan Row, St Thomas
SA1 8EQ
The neighbourhood at a glance
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Hoo Street — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.






