11 Heol Y Graig, Clydach, Swansea, SA6 5BZ
About 11 Heol Y Graig
11 Heol Y Graig is a detached house in Clydach, Swansea, Swansea (SA6 5BZ). It has a recorded floor area of 109 m² (around 1173 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (October 2017) shows a D (score 67), on the cusp of jumping into the C band. When first surveyed in July 2015 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Good to Very Good, hot-water efficiency went from Average to Good and lighting went from Good to Very Good; while window efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 91), a 2-band jump.
Held since September 1996 — that's 30 years off the open market, well above the local norm. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £210,000 sits 588.5% above the 1996 sale of £30,500. On a £-per-square-foot basis, the last sale (£26/sq ft) was about 76.3% below the postcode norm. One planning record on file: an extension approved in 2005. Past consents include an extension, meaningful when judging how the property has evolved.
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Hot water efficiency improved
Loft insulation upgraded to recommended levels
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has been extended more than once, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
Council records include a two-storey rear extension at 11 Heol Y Graig.
1 application on record at 11 Heol Y Graig, Clydach, Swansea, SA6 5BZ
- May 2005ExtensionFullOutcome in report
Extension: Two storey · Rear of property
Two storey rear extension (Elevation fronting Lower Clydach River)
- Reference
- 2004/2580
Unlock 11 Heol Y Graig, Clydach, Swansea, SA6 5BZ'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- Every decision — granted, refused or withdrawn (1 on record)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 2 notable nearby
- What the pattern means for extending or converting here
One time fee only - money back guarantee
Sales history & valuation
11 Heol Y Graig's modelled value sits at over four times its earliest registered sale price (1996).
£210,000
Modelled from EPC, postcode comparables.
£30,500
Recorded with HM Land Registry.
Sales timeline
5 September 1996Most recent
£30,500
Median price across the last 5 sales in SA6 5BZ: £177,500 (2025–2021).
Nearby sales in SA6 5BZ
10 Heol Y Graig, Clydach, Swansea, SA6 5BZ
Sold Jul 2025
£225,00016 Heol Y Graig, Clydach, Swansea, SA6 5BZ
Sold Aug 2024
£210,00014a, Heol Y Graig, Clydach, Swansea, SA6 5BZ
Sold Sept 2023
£135,00012 Heol Y Graig, Clydach, Swansea, SA6 5BZ
Sold Dec 2022
£177,50013 Heol Y Graig, Clydach, Swansea, SA6 5BZ
Sold May 2021
£148,500
Versus other Heol Y Graig homes
On price per m², 11 Heol Y Graig runs well behind the street norm.
Price per m²
£280
Street avg £1,559
Floor Area
109 m²
Street avg 100 m²
Habitable Rooms
7 rooms
Street avg 6 rooms
CO₂ Emissions
4.5 t/year
Street avg 4.4 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Three Compasses — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







