13 Gelli Street, Port Tennant, Swansea, SA1 8NJ
About 13 Gelli Street
13 Gelli Street is a three-bedroom mid-terrace house in Port Tennant, Swansea, Swansea (SA1 8NJ). It has a recorded floor area of 92 m² (around 990 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (March 2026) shows a D (score 68), on the cusp of jumping into the C band. Earlier certificates rated it C (April 2024); the latest reading is one band lower. Between certificates, window efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 79). This certificate was lodged in the last six months, so the rating reflects current condition. Our model identifies extension potential, subject to local planning policy.
Across 2008–2026, sale prices on this property compounded at 1.8% per year. Today's modelled estimate of £139,000 sits 50.3% above the 2026 sale of £92,500. A recent sale: £92,500 in May 2026.
What this property has
Inside
- Bedrooms3
- Bathrooms1
Building
- Extension potentialPossible
Everything you need to know about 13 Gelli Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
The EPC has just been inspected, so the rating reflects current condition.
EPC Rating
Certificate validity
Valid until 12 March 2036
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
13 Gelli Street has no planning applications on record.
But the area is active
47 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
13 Gelli Street valuation sits well clear of the typical sold price in this postcode.
£139,000
Modelled from EPC, postcode comparables and a sale-price growth of 1.8% per year over 18 years.
£92,500
Growth on file: 1.8% per year over 18 years.
Sales timeline
21 May 2026Most recent
£92,500
-19.6%over 17 years26 November 2008
£115,000
+70.4%25 September 2008
£67,500
Median price across the last 5 sales in SA1 8NJ: £127,000 (2026–2024).
Nearby sales in SA1 8NJ
7 Gelli Street, Port Tennant, Swansea, SA1 8NJ
Sold Mar 2026
£129,50035 Gelli Street, Port Tennant, Swansea, SA1 8NJ
Sold Jan 2025
£127,0003 Gelli Street, Port Tennant, Swansea, SA1 8NJ
Sold Sept 2024
£137,95040 Gelli Street, Port Tennant, Swansea, SA1 8NJ
Sold Aug 2024
£104,9509 Gelli Street, Port Tennant, Swansea, SA1 8NJ
Sold Jan 2024
£87,000
Versus other Gelli Street homes
13 Gelli Street is notably below the street on years held.
Price per m²
£1,005
Street avg £1,209
Floor Area
92 m²
Street avg 86 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
3.0 t/year
Street avg 3.4 t/year
Everything you need to know about 13 Gelli Street
The true value, the hidden risks and the full sale history, in one report.
Pick your report · from £14.99
One time fee only - money back guarantee

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The neighbourhood at a glance
Crime
580/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
St Stephens Church — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.






