11 Berthwin Street, Cardiff, CF11 9JH
About 11 Berthwin Street
11 Berthwin Street is a five-bedroom mid-terrace house in Cardiff (CF11 9JH). It has a recorded floor area of 118 m² (around 1270 sq ft), construction records dating it to 1900-1929 and council tax band D. The latest certificate (December 2016) shows a D (score 66), on the cusp of jumping into the C band. When first surveyed in June 2011 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Good, window efficiency went from Very Poor to Good and lighting went from Very Poor to Very Good. The recommended improvements would lift it to B (score 83), a 2-band jump.
Across 2011–2017, sale prices on this property compounded at 6% per year. Today's modelled estimate of £650,000 is 18.2% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£433/sq ft) was about 101% above the typical sold price in the postcode. On the market in May 2017 and unlisted since — roughly 9 years. At 118 m² it's 19.7% smaller than the typical home in the postcode (147 m² median across 11 EPCs). One historical planning record sits against the property in 2009.
What this property has
Inside
- Bedrooms5
- Dining roomYes
- EnsuiteYes
Outside
- Private gardenRear
- GarageYes
Building
- Central heatingYes
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
Single glazing replaced with double or better glazing
Roof insulation improved
More low energy lighting installed
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 £1,155 · Includes VAT
Planning history
1 application on record at 11 Berthwin Street, Cardiff, CF11 9JH
- Nov 2009RenovationFullOutcome in report
INSTALLATION OF TWO VELUX ROOFLIGHTS TO THE REAR ELEVATIONS
- Documents
- 1 doc on file
- Reference
- 09/01651/W
Unlock 11 Berthwin Street, Cardiff, CF11 9JH'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- Every decision — granted, refused or withdrawn (1 on record)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 4 notable nearby
- The 1 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
11 Berthwin Street valuation sits well clear of the typical sold price in this postcode.
£650,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.0% per year over 5 years.
£550,000
Growth on file: 6.0% per year over 5 years.
Sales timeline
4 May 2017Most recent
£550,000
+37.5%over 5 years11 November 2011
£400,000
Median price across the last 5 sales in CF11 9JH: £540,000 (2024–2018).
Nearby sales in CF11 9JH
Versus other Berthwin Street homes
Price per m² for 11 Berthwin Street runs comfortably ahead of the street norm.
Price per m²
£4,661
Street avg £3,097
Floor Area
118 m²
Street avg 157 m²
Habitable Rooms
6 rooms
Street avg 7 rooms
CO₂ Emissions
4.4 t/year
Street avg 7.6 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
9/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Berthwin Street — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







