12 Mountain Road, Craig Cefn Parc, Swansea, SA6 5RH
About 12 Mountain Road
12 Mountain Road is a detached house in Craig-Cefn-Parc, Swansea, Swansea (SA6 5RH). It has a recorded floor area of 86 m² (around 926 sq ft), construction records dating it to 2003-2006 and council tax band D. The latest certificate (June 2017) shows a C (score 71). When first surveyed in April 2013 the rating was G, the property has climbed 4 bands since. Between certificates, wall efficiency went from Very Poor to Very Good, roof efficiency went from Poor to Good and window efficiency went from Very Poor to Good. The recommended improvements would push it to B (score 84). Main heating runs on oil.
Today's modelled estimate of £230,000 sits 150% above the 2013 sale of £92,000. On a £-per-square-foot basis, the last sale (£99/sq ft) was about 33.4% below the postcode norm. One planning record on file: an extension approved in 2016. Past consents include an extension and a porch, meaningful when judging how the property has evolved. At 86 m² it's 17.4% smaller than the typical home in the postcode (104 m² median across 13 EPCs). Its energy rating outperforms most of the postcode (better than 85% of similar EPCs). 13 years since the last transfer (May 2013).
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Upgraded to gas central heating
Fuel source changed
Heating controls upgraded for better temperature management
Hot water system upgraded
Single glazing replaced with double or better glazing
Wall insulation improved
Loft insulation upgraded to recommended levels
Floor insulation added or improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
Council records include a two-storey extension at 12 Mountain Road.
1 application on record at 12 Mountain Road, Craig Cefn Parc, Swansea, SA6 5RH
- Aug 2016PorchFullOutcome in report
Extension: Two storey
Two storey side extension with a front porch and addition of ground and first floor Juliette balconies to existing rear elevation
Extension- Documents
- 16 docs on file
- Reference
- 2016/1308
Unlock 12 Mountain Road, Craig Cefn Parc, Swansea, SA6 5RH'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- Every decision — granted, refused or withdrawn (1 on record)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
- The 16 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
12 Mountain Road valuation sits well clear of the typical sold price in this postcode.
£230,000
Modelled from EPC, postcode comparables.
£92,000
Recorded with HM Land Registry.
Sales timeline
29 May 2013Most recent
£92,000
Median price across the last 5 sales in SA6 5RH: £240,000 (2025–2021).
Nearby sales in SA6 5RH
23 Mountain Road, Craig Cefn Parc, Swansea, SA6 5RH
Sold Mar 2025
£187,00030 Mountain Road, Craig Cefn Parc, Swansea, SA6 5RH
Sold Feb 2025
£320,0005 Mountain Road, Craig Cefn Parc, Swansea, SA6 5RH
Sold Sept 2022
£240,00015 Mountain Road, Craig Cefn Parc, Swansea, SA6 5RH
Sold Nov 2021
£280,00033 Mountain Road, Craig Cefn Parc, Swansea, SA6 5RH
Sold Oct 2020
£340,000
Versus other Mountain Road homes
EPC Rating for 12 Mountain Road runs comfortably ahead of the street norm.
Price per m²
£1,070
Street avg £1,828
Floor Area
86 m²
Street avg 122 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
3.0 t/year
Street avg 7.0 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
Rhyddwen Road Terminus — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







