Queenstown's clamping down on Airbnb, as affordable living in the city is sucked up by the tourism rental service.

Under rules the Queenstown Lakes District Council is voting on today, homeowners will have a short-term rental cap of 28 days a year.

Tourism Industry Aotearoa chief executive Chris Roberts said short term rentals are draining housing for tourism workers.

"People have purchased houses in the suburbs of Queenstown with no intention of ever living there themselves.

"They're running them full-time as a business, renting out to visitors, essentially as a hotel."