BusinessGreen: Builders could be allowed to buy carbon offsets from third parties to help meet a government target for all homes to be "zero carbon" by 2016. The Department for Communities and Local Government yesterday unveiled a consultation on so called "allowable solutions" - the offsite measures house builders can use to curb the emissions from new housing stock in England. Under the government's Zero Carbon Homes plan, house builders will be required to meet strict standards on energy efficiency by 2016...