1 Clees Lane, Ystalyfera, Swansea, SA9 2BX
About 1 Clees Lane
1 Clees Lane is a semi-detached house in Ystalyfera, Swansea, Swansea (SA9 2BX). It has a recorded floor area of 68 m² (around 732 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (January 2025) shows a C (score 69), just inside the C band. When first surveyed in February 2017 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Good, roof efficiency went from Very Poor to Average and window efficiency went from Average to Good; while main heating dropped from Good to Average. The recommended improvements would push it to B (score 87). Main heating runs on electricity.
Across 2000–2017, sale prices on this property compounded at 8.4% per year. Today's modelled estimate of £127,000 sits 209.8% above the 2017 sale of £41,000. On a £-per-square-foot basis, the last sale (£56/sq ft) was about 29.7% below the postcode norm. Its energy rating outperforms most of the postcode (better than 83% of similar EPCs). Last sold in March 2017, so it's been off the market for around 9 years. 2 planning records sit against the property, 0 approved, 2 refused.
Know exactly what you're buying at 1 Clees Lane
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
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Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating system changed
Changed to a more efficient fuel source
Heating controls upgraded for better temperature management
Window efficiency improved
Wall insulation improved
Loft insulation installed or upgraded to 250mm+
More low energy lighting installed
Planning history
- May 2020ConversionFullIn report
Retention and completion of conversion of pitched roof to flat roof deck with balustrading and screening with access via French doors
- Agent
- Stephen Waldron Architects Ltd
Retrospective- Documents
- 6 docs on file
- Reference
- P2019/5619
- May 2020RenovationFullIn report
Retention of changes of level of parking area, raised decking, French doors & Juliet balcony to south east 1st floor elevation
- Agent
- Stephen Waldron Architects Ltd
- Documents
- 8 docs on file
- Reference
- P2019/5618
What's in 1 Clees Lane, Ystalyfera, Swansea, SA9 2BX's planning history?
Refusals, disputes and full decisions on this property and nearby, in the report.
Sales history & valuation
1 Clees Lane has more than tripled in price since its earliest registered sale in 2000.
£127,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.4% per year over 17 years.
£41,000
Growth on file: 8.4% per year over 17 years.
Sales timeline
22 March 2017Most recent
£41,000
+82.2%over 14 years20 August 2002
£22,500
+114.3%over 2 years1 June 2000
£10,500
Median price across the last 5 sales in SA9 2BX: £52,500 (2024–2020).
Nearby sales in SA9 2BX
29 Clees Lane, Ystalyfera, Swansea, SA9 2BX
Sold Sept 2024
£51,5002 Clees Lane, Ystalyfera, Swansea, SA9 2BX
Sold Jun 2023
£60,00028 Clees Lane, Ystalyfera, Swansea, SA9 2BX
Sold Mar 2022
£73,50019 Clees Lane, Ystalyfera, Swansea, SA9 2BX
Sold Aug 2020
£43,00020 Clees Lane, Ystalyfera, Swansea, SA9 2BX
Sold Oct 2016
£262,500
Everything we know about 1 Clees Lane, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus other Clees Lane homes
1 Clees Lane outperforms the street on epc rating by a wide margin.
Price per m²
£603
Street avg £1,122
Floor Area
68 m²
Street avg 89 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
4.9 t/year
Street avg 5.3 t/year
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The neighbourhood at a glance
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Clees Lane — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.