12 Pen Y Lan Terrace, Penylan, Cardiff, CF23 9EU
About 12 Pen Y Lan Terrace
12 Pen Y Lan Terrace is a four-bedroom mid-terrace house in Penylan, Cardiff, Cardiff (CF23 9EU). It has a recorded floor area of 154 m² (around 1658 sq ft), construction records dating it to 1900-1929 and council tax band D. The latest certificate (March 2025) shows a C (score 73). When first surveyed in March 2015 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency dropped from Good to Average.
At 154 m² it's 25.2% larger than the typical home in the postcode (123 m² median across 15 EPCs). On energy efficiency it sits in the top 10% of properties in this postcode. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include a loft conversion and an extension, meaningful when judging how the property has evolved. Across 1999–2016, sale prices on this property compounded at 8.3% per year. Today's modelled estimate of £485,000 is 39.4% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£210/sq ft) was about 17.9% below the postcode norm. Last changed hands 10 years ago, in March 2016.
What this property has
Inside
- Bedrooms4
- Bathrooms2
- Open-plan layoutYes
- Dining roomYes
Outside
- Private gardenRear
Building
- RefurbishedYes
Energy performance
12 Pen Y Lan Terrace ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
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 £1,020 · Includes VAT
Planning history
Planning history includes both a loft conversion and an extension — the classic family-home expansion.
2 applications on record at 12 Pen Y Lan Terrace, Penylan, Cardiff, CF23 9EU
- Jun 2017ExtensionFullOutcome in report
Extension: Rear of property
SINGLE STOREY ORANGERY TO REAR OF PROPERTY
- Documents
- 4 docs on file
- Reference
- 17/01015/DCH
- More recent applications — locked
- Loft ConversionMar 2023Decision
Unlock 12 Pen Y Lan Terrace, Penylan, Cardiff, CF23 9EU's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (2 on record)
- All 2 applications on this property in full, plus 2 notable nearby
- The 13 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
Sale price has grown by over 3x since 1999.
£485,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.3% per year over 16 years.
£348,000
Growth on file: 8.3% per year over 16 years.
Sales timeline
24 March 2016Most recent
£348,000
+270.2%over 16 years5 October 1999
£94,000
Median price across the last 5 sales in CF23 9EU: £400,000 (2024–2020).
Nearby sales in CF23 9EU
1a, Pen Y Lan Terrace, Penylan, Cardiff, CF23 9EU
Sold Oct 2024
£256,00015 Pen Y Lan Terrace, Penylan, Cardiff, CF23 9EU
Sold Oct 2022
£480,00011 Pen Y Lan Terrace, Penylan, Cardiff, CF23 9EU
Sold Oct 2021
£425,00024 Pen Y Lan Terrace, Penylan, Cardiff, CF23 9EU
Sold Jun 2021
£400,0005 Pen Y Lan Terrace, Penylan, Cardiff, CF23 9EU
Sold Sept 2019
£357,000
Versus other Pen Y Lan Terrace homes
12 Pen Y Lan Terrace is notably below the street on price per m².
Price per m²
£2,260
Street avg £3,119
Floor Area
154 m²
Street avg 127 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
4.3 t/year
Street avg 5.3 t/year
Similar properties nearby
1 Earl S Court Road, Penylan
CF23 9DD
1 Hugon Close
CF23 9BY
1 Firstbrook Close
CF23 9ER
1 Kingwood Close, Penylan
CF23 9HE
1 Bryn Y Nant, Llanedeyrn
CF23 9NZ
1 Barons Court Road, Penylan
CF23 9DF
1 Colchester Avenue, Penylan
CF23 9BN
1 Clos Gwrgi, Penylan
CF23 9FQ
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
Greenlawns — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







