15 Cilonnen Road, Three Crosses, Swansea, SA4 3PH
About 15 Cilonnen Road
15 Cilonnen Road is a semi-detached house in Three Crosses, Swansea, Swansea (SA4 3PH). It has a recorded floor area of 141 m² (around 1518 sq ft), construction records dating it to 1950-1966 and council tax band E. The latest certificate (September 2021) shows a D (score 68), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since July 2013. Between certificates, roof efficiency went from Very Poor to Good. The recommended improvements would push it to C (score 80).
One planning record on file: an extension approved in 2002. Past consents include an extension and a conservatory, meaningful when judging how the property has evolved. Across 1996–2021, sale prices on this property compounded at 7.6% per year. On a £-per-square-foot basis, the last sale (£264/sq ft) was about 39.4% above the typical sold price in the postcode. Last sale on file: £400,000 in October 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Everything you need to know about 15 Cilonnen Road
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
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Roof insulation improved
Get a survey for this property
Level 3 Building Survey
Because the property has been extended more than once, we believe a Level 3 building survey should be considered.
From £1,020 · Includes VAT
Planning history
1 application on record at 15 Cilonnen Road, Three Crosses, Swansea, SA4 3PH
- Jul 2002ConservatoryFullOutcome in report
Extension: Single storey
Single storey side extension incorporating garage, first floor rear extension and rear conservatory extension
Extension- Reference
- 2002/0760
Unlock 15 Cilonnen Road, Three Crosses, Swansea, SA4 3PH'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- Every decision — granted, refused or withdrawn (1 on record)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 5 notable nearby
- What the pattern means for extending or converting here
One time fee only - money back guarantee
Sales history & valuation
15 Cilonnen Road has more than quadrupled in price since its earliest registered sale in 1996.
£434,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.6% per year over 25 years.
£400,000
Growth on file: 7.6% per year over 25 years.
Sales timeline
14 October 2021Most recent
£400,000
+344.7%over 20 years7 June 2001
£89,950
+42.8%over 5 years4 June 1996
£63,000
Median price across the last 5 sales in SA4 3PH: £375,000 (2025–2024).
Nearby sales in SA4 3PH
1 Cilonnen Road, Three Crosses, Swansea, SA4 3PH
Sold Jun 2025
£375,00021 Cilonnen Road, Three Crosses, Swansea, SA4 3PH
Sold May 2025
£350,00019 Cilonnen Road, Three Crosses, Swansea, SA4 3PH
Sold Sept 2024
£395,0006 Cilonnen Road, Three Crosses, Swansea, SA4 3PH
Sold Jul 2024
£430,00011 Cilonnen Road, Three Crosses, Swansea, SA4 3PH
Sold Jun 2024
£355,000
Versus other Cilonnen Road homes
Price per m²
£2,837
Street avg £2,711
Floor Area
141 m²
Street avg 147 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
4.7 t/year
Street avg 6.0 t/year
Everything you need to know about 15 Cilonnen Road
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
The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Pant Y Dwr — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.






