11 Cyncoed Avenue, Cardiff, CF23 6ST
About 11 Cyncoed Avenue
11 Cyncoed Avenue is a detached house in Cardiff (CF23 6ST). It has a recorded floor area of 239 m² (around 2573 sq ft) and construction records dating it to 1930-1949. The latest certificate (September 2018) shows a D (score 57), a step below the typical UK home. The recommended improvements would push it to C (score 77).
At 239 m² the property is well over the postcode median (170 m² across 3 EPCs), placing it in the larger end of the local stock. 3 planning records sit against the property, 3 approved, 0 refused. Past consents include an extension and a porch, meaningful when judging how the property has evolved. Today's modelled estimate of £1,010,000 is 29.5% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£303/sq ft) was about 110.1% above the typical sold price in the postcode. Last sale on file: £780,000 in November 2019.
Energy performance
11 Cyncoed Avenue's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
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 £1,645 · Includes VAT
Planning history
3 applications on record at 11 Cyncoed Avenue, Cardiff, CF23 6ST
- Jan 2019PorchFullOutcome in report
Extension: Two storey · Side of property
REMOVAL OF EXISTING FLAT ROOF 2 STOREY SIDE EXTENSION, FRONT LEAN-TO PORCH AND FLAT ROOF REAR EXTENSION. PROPOSED 2 STOREY SIDE EXTENSION TO REPLACE EXISTING, MODIFIED PORCH AND RELOCATION OF FRONT DOOR. PROPOSED CONTEMPORARY SINGLE STOREY REAR EXTENSION.
Extension- Documents
- 11 docs on file
- Reference
- 18/03017/DCH
- More recent applications — locked
- PorchJul 2023Decision
- PorchJul 2023Decision
Unlock 11 Cyncoed Avenue, Cardiff, CF23 6ST's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (3 on record)
- All 3 applications on this property in full, plus 1 notable nearby
- The 25 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
Latest sale on 11 Cyncoed Avenue was the highest on Land Registry record across the postcode.
£1,010,000
Modelled from EPC, postcode comparables.
£780,000
Recorded with HM Land Registry.
Sales timeline
29 November 2019Most recent
£780,000
Median price across the last 5 sales in CF23 6ST: £287,500 (2011–1999).
Versus other Cyncoed Avenue homes
11 Cyncoed Avenue outperforms the street on floor area by a wide margin.
EPC Rating
57 (D)
Street avg 55 (D)
Floor Area
239 m²
Street avg 172 m²
CO₂ Emissions
9.6 t/year
Street avg 8.3 t/year
Habitable Rooms
9 rooms
Street avg 7 rooms
Similar properties nearby
The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
9/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Cyncoed Avenue — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







