The sale of goods and services via peer-to-peer technologies generated $2.6 billion in revenue for the NSW economy last year, recording growth of nearly 70 per cent, according to the research from Deloitte Access Economics commissioned by the finance department.

The number of people in NSW earning an income from businesses that are part of what the state government calls the collaborative economy has nearly doubled over the past 12 months to reach 92,400, the research found.

"The booming collaborative economy is disrupting traditional business models, putting downward pressure on prices and providing more choice for the public than ever before," said the Minister for Innovation and Better Regulation Matt Kean.

Marketplace eBay, accommodation exchange Airbnb and ride-sharing app Uber are the businesses most commonly associated with peer-to-peer business.

But the Deloitte report finds that financial services and peer-to-peer lending are the fastest growing part of the state's collaborative economy.

Financial peer-to-peer businesses, including lending companies such as SocietyOne, a platform that connects lenders with borrowers more than tripled their yearly revenue last year. The number of people who derived income from collaborative financial services enterprise also rose more than 150 per cent.

Other peer-to-peer businesses growing in popularity in NSW include Divvy Parking, a service that rents unused parking spaces; The Clothing Exchange, which encourages trade in second-hand fashion; and the textbook rental service Zookal.

The state government continues to deal with the question of how to regulate some parts of the collaborative economy but it welcomes the use of peer-to-peer platforms as a boon for productivity and consumer choice.

An estimated 38,000 NSW homes are listed on the short-term accommodation rental service Airbnb, according to company estimates. The average user earns about $4700 a year from renting out their home for 28 nights a year.

A NSW parliamentary inquiry last year recommended giving the green light to platforms such as Airbnb without risking fines.

The inquiry recommended a new regulatory framework for the use of Airbnb, including a threshold number of nights, under which letters would not need to seek council approval.

Those recommendations received a mixed response, with the Owners Corporation Network arguing strata managers should retain their power to ban short-term lets and argues that the practice is driving up rents in NSW.

The state government is expected to respond to the inquiry on April 12.

Other more established sectors have also recorded strong growth: revenue generated by collaborative transportation platforms grew nearly two-and-a-half times, while services and labour hire businesses, such as the popular Airtasker service rose more than 50 per cent.

The state government legalised the Uber ride-sharing service in December 2015. The number of Uber drivers in the state grew from 3000 to about 8000 last year and competitors such as GoCar have also registered strong growth.