The biggest building sites in Brighton and Hove will need to have green waste plans in place when new rules come into force next month.
Brighton and Hove City Council said that from Monday 15 November building firms working on developments worth more than £300,000 would have to have a site waste management plan.
Site waste management plans are intended to encourage developers and their clients to reduce, reuse and recycle their construction and demolition waste.
The council said that it was one of the first local authorities to start working with local builders to make sure they understand the new government regulations.
Since May the council and the South East Centre for the Built Environment (SECBE), have provided free training on the new rules.
The next session is due to take place at Hove Town Hall on Wednesday 10 November.
In addition to the training courses and a publicity campaign, council officers have been to more than 30 building sites to advise and help contractors with the new rules.
The council said that 1.2 million tonnes of construction and demolition waste is produced in a year in Brighton and Hove and East Sussex combined.
This is 62 per cent of all the waste generated across the area. About 35 per cent of construction waste currently goes to landfill. The cuncil said that the figure should be just 12 per cent by 2021.
Council leader Mary Mears said: “The more construction waste they can reuse or recycle, the cheaper it becomes as landfill tax reduces and the more they can save on costs of new materials.
“Companies with management plans already in place can make a significant saving on their development costs.
“Our programme of training has been well received and we will continue to provide support and advice to businesses so that they are well informed.”
Developers, architects and construction companies that wish to attend the next free training event should contact Julian Carter at julian@secbe.org.uk.