Energy Performance Certificate
4 Penlline Road
CF14 2XS
CARDIFF
Current
F
38
Potential
D
64
This F-Rated Property Costs Significantly More to Run
This Property
£4,022
estimated per year
UK Average
£1,800
per year
After Improvements
£2,288
potential per year
This property costs approximately £2,222 more per year than the UK average. Recommended improvements could save up to £1,734 annually.
💰 Government Grants Available for This Property
🏛️ BUS Grant
£7,500
Off the cost of an air source heat pump. Available now — limited places.
Check Eligibility →🏠 ECO4 Scheme
Free
Free insulation & heating upgrades for eligible households on benefits or low income.
Check Eligibility →📉 0% VAT
Save ~20%
Zero VAT on heat pumps, insulation, and solar panels until 2027. Applies automatically.
Get Solar Quote →How to Improve This F-Rated Property
With the right upgrades, this property could reach a D rating — saving up to £1,734 per year. Improvements are ranked by return on investment.
Showing quick wins with fastest payback first
💰 Save £3,334/year
With 5 selected upgrades
Future Energy Price Simulator
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Your Savings Today
£3,334/yr
£33,340 over 10 years
Move slider to see
£3,334/yr
£33,340 over 10 years
Build Your Upgrade Plan
Sorted by best return on investment (quick wins first)
Loft Insulation
Your roof is rated Poor. Cheapest upgrade with fastest payback — top up to 270mm.
Air Source Heat Pump
Ultra-efficient heating with £7,500 government grant. OVO: MCS certified installation.
Cavity Wall Insulation
Your walls are rated Poor. Cavity fill is quick and cost-effective.
Solar Panels + Battery
Your house is ideal for solar. OVO: UK's #1 green energy supplier.
Double Glazing
Your windows are rated Poor. Modern A-rated double glazing reduces drafts and heat loss.
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Why Does This Property Have a F Rating?
This detached house is located in CARDIFF, CF14 2XS. The property offers 292.56m² (3149 sq ft) of generously-sized living space with 10 habitable rooms. It is a characterful interwar or early 20th century home. Currently rated F (38/100) for energy efficiency, this property would benefit significantly from energy improvements. With recommended improvements, it could achieve a D rating (64/100). The gas central heating system has good efficiency, indicating a relatively modern, well-maintained boiler. The walls feature cavity wall insulation for improved thermal efficiency. Double glazing is installed, though the efficiency rating suggests older units. Modern low-E double glazing can be up to 40% more efficient than units installed before 2002. Estimated annual energy costs are £4022, comprising £3390 for heating, £520 for hot water, and £112 for lighting. The property produces 23.0 tonnes of CO2 per year, which is high for a UK home.
Energy Efficiency Rating
📊 Official EPC Register DataCurrent Rating
Achievable Rating
With recommended improvements
Based on assessment dated 15 Sept 2011
What's Causing the Poor Energy Rating?
The EPC assessor rated each element of this property. Poor and average ratings are the biggest opportunities for improvement.
🧱 Walls
Cavity wall, as built, no insulation (assumed)
🏗️ Roof
Pitched, 25 mm loft insulation
🪟 Windows
Mostly double glazing
📦 Floor
Solid, no insulation (assumed)
🔥 Heating
Boiler and radiators, mains gas
🚿 Hot Water
NaN
💡 Lighting
88.0% low energy — Low energy lighting in 88% of fixed outlets
Property Information
Full Address
4 Penlline Road
CF14 2XS
CARDIFF
Property Type
House
Detached
Construction Age
England and Wales: 1900-1929
Floor Area
292.56 m²
10.0 total rooms
CO₂ Emissions
23.0 tonnes/year
67 kg/m²
Energy Consumption
346 kWh/m²/year
F-Rated Properties in CARDIFF
CARDIFF properties with F ratings are among the least energy efficient in the area. Properties in this postcode district (CF14) that have undergone improvement works have seen significant increases in EPC ratings and corresponding reductions in energy bills.
Annual Running Costs — Current vs Potential
🔥 Heating
Boiler and radiators, mains gas
£3390 /yr
Save £1336/yr with improvements
🚿 Hot Water
£520 /yr
Save £398/yr with improvements
💡 Lighting
88.0% low energy
£112 /yr
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Broadband & Connectivity
Average download speed: 69 Mbps
Download Speed
Upload Speed
Available Providers
What do these speeds mean? 10-30 Mbps: Good for browsing and streaming. 30-100 Mbps: Great for multiple users and HD streaming. 100-300 Mbps: Excellent for 4K streaming and gaming. 300+ Mbps: Perfect for large households and heavy internet use.
Data source: Broadband speeds are from Ofcom Connected Nations 2025 report (July 2025 release). Data shows typical speeds available in this postcode area. Actual speeds at this specific property may vary depending on line quality, distance from exchange, and chosen provider. Always verify availability with providers before committing.
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More Properties in the CF14 Area
Explore nearby properties with EPC ratings in the CF14 postcode district
All properties in CF14 • Click to view detailed energy performance data
About this EPC: Energy Performance Certificates are valid for 10 years and are required when a property is built, sold, or rented.
Data Sources: UK Energy Performance Certificate Register, HM Land Registry Price Paid Data, Police.uk crime statistics.
Public sector information licensed under the Open Government Licence v3.0.