31 Crymlyn Street, Port Tennant, Swansea, SA1 8NX
About 31 Crymlyn Street
31 Crymlyn Street is a three-bedroom mid-terrace house in Port Tennant, Swansea, Swansea (SA1 8NX). It has a recorded floor area of 74 m² (around 797 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (August 2023) shows a C (score 71). When first surveyed in December 2012 the rating was D, the property has climbed 1 band since. The recommended improvements would push it to B (score 88).
Untraded for 21 years, with the last transfer in February 2005. Today's modelled estimate of £134,000 sits 67.5% above the 2005 sale of £80,000. On a £-per-square-foot basis, the last sale (£100/sq ft) was about 20.5% above the typical sold price in the postcode. One planning record on file: HMO conversion approved in 2017. Past consents include HMO conversion, meaningful when judging how the property has evolved. Its energy rating outperforms most of the postcode (better than 71% of similar EPCs).
What this property has
Inside
- Bedrooms3
- Bathrooms1
Everything you need to know about 31 Crymlyn Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
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
1 application on record at 31 Crymlyn Street, Port Tennant, Swansea, SA1 8NX
- Jun 2017HMOFullOutcome in report
Change of use from 3 bedroom residential dwelling (Class C3) to 3 bedroom HMO (Class C4)
- Documents
- 10 docs on file
- Reference
- 2017/0841/FUL
Unlock 31 Crymlyn Street, Port Tennant, Swansea, SA1 8NX's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 53 notable nearby
- The 10 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
31 Crymlyn Street valuation sits well clear of the typical sold price in this postcode.
£134,000
Modelled from EPC, postcode comparables.
£80,000
Recorded with HM Land Registry.
Sales timeline
25 February 2005Most recent
£80,000
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
CO₂ Emissions for 31 Crymlyn Street runs comfortably ahead of the street norm.
Price per m²
£1,081
Street avg £902
Floor Area
74 m²
Street avg 82 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
2.4 t/year
Street avg 4.0 t/year
Everything you need to know about 31 Crymlyn Street
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
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.






