The industry investing millions in Sydney during COVID-19

The coronavirus pandemic has put a shocking number of Australians out of work, but there's one sector anticipating a boom.

Western Sydney has welcomed a range of developments set to turn the region into a hub of packaging and warehouse delivery.

Increasing numbers of people and businesses working from home has resulted in a surge in delivery orders.

Sydney Business Park development director Owen Walsh said they had created 4500 jobs and hoped to push through to 23,500.

"It's a huge area – there's three kilometres by two kilometres, twice the size of the CBD," Mr Walsh said.

Figures compiled exclusively for 9News by Australian Commercial Property showed the Blacktown local government area – including Marsden Park, Prospect, and Riverstone – was leading the rest of Sydney, with $640 million of development approvals last financial year.

It's followed by Cumberland ($166 million), Canterbury-Bankstown ($93 million) and Sutherland ($91 million).

"This is set to accelerate of course, because more people are working from home and using the internet both for personal goods and business goods," Dr Andrew Wilson of Australian Commercial Property said.

"The real epicenter of this has been Sydney's west."

There's now a push to make sure roads and infrastructure keep up with the fast pace of development.

"This industry of warehousing is absolutely sensational in terms of job opportunities," Blacktown Mayor Tony Bleasdale told 9News.