this carbon footprint calculator is on the BP website
but still it give you an idea
http://www.bp.com/iframe.do?categoryId=9005522&contentId=7011382
My house holds annual carbon foot print is 9 tonnes of CO2----and that i found surprising!!
but still it give you an idea
http://www.bp.com/iframe.do?categoryId=9005522&contentId=7011382
My house holds annual carbon foot print is 9 tonnes of CO2----and that i found surprising!!



)
Plus house leaks heat and doubt there's any insulation in roof etc. Real CO2 probably around average x