Its Pay As You Save scheme would allow people to carry out greening work costing up to £10,000 without an upfront charge.
A third party vehicle would hold up to £5 billion of cash raised on the private finance markets, and pay contractors upfront for the work.
It would recoup the money in monthly installments by whoever owns the houses worked on. House buyers would take on the charges, which would be lower than the utility bill savings generated by the work.
UKGBC chief executive Paul King said: “This innovative proposal would provide the finance to trigger a revolution in household refurbishment, creating thousands of new jobs and significantly cutting carbon emissions.
“Both Government and opposition parties have voiced their support for the principles of a scheme like this – what’s needed is to get on with it.”