Hundreds of landlords are still flouting the law almost a year after Vancouver introduced rules around short-term rentals, says a housing advocate who is unconvinced of the bylaw's clout.

City bylaws introduced April 19 require hosts to obtain a business licence and state that a landlord can only rent out their principal residence, or, if the residence is already rented long term, the tenant may operate a short-term rental with the owner's permission.

The initiative was the city's response to short-term vacation rentals wreaking havoc with housing for long-term renters.

But Vancouver housing advocate Rohana Rezel, a candidate for council in the last municipal election, says a quick scan of 4,000 Vancouver units listed on the site showed at least 800 in clear violation of the bylaws.

He said hosts are getting around the bylaws by describing multiple units under one listing or simply typing "exempt" as their licence, because the city has no software to track and validate each licence number.

"There were ​hosts listing more than one unit, more than one entire home or apartment," said Rezel.

Problem with enforcement

Rezel says these problems persist because the memorandum of understanding between Airbnb and the city was flawed to begin with. It absolves Airbnb of wrongdoing or responsibility when it comes to cracking down on the hosts.

Although Airbnb has agreed to help the city enforce the rules, Rezel says enforcement is ultimately up to the city.

But Rezel thinks the city should do more to pressure the company.

"If you put the onus on Airbnb to police the hosts, I think we can make some progress on tackling this problem," he said.

"The cities that have successfully cracked down on Airbnb have made the platform accountable."

Vancouver a 'great model'

Chris Lehane, the head of global policy and public affairs for Airbnb, says that Vancouver is a "great model" for cities dealing with housing accessibility.

And when it comes to concerns over policing, Lehane says the company and the city share information that leads to effective enforcement overall.

"The regulatory framework here works," he said.

"Ultimately, we did take down 2,500 listings and we are working closely with the City of Vancouver to make sure this is working as well as possible."

When presented with Rezel's criticisms, Kathryn Holm — the chief licence inspector with the City of Vancouver — maintained its relationship with Airbnb is working.

"Airbnb provides the city with data on a quarterly basis to support enforcement efforts, and we are very pleased to be working with them to help ensure all Vancouver listings on Airbnb are licensed," Holm said.

Lehane says that short-term rentals are benefiting nearly 5,000 Vancouverites who are supplementing their incomes.

Rezel agrees in theory that home-sharing is a great way for people to make some extra money on a spare room — but says too many people are not using it this way.

He also says he's still hearing stories of people getting kicked out of their homes so the landlord can operate Airbnb, even though it's against the law.

"People are leaving the city because they can't find housing," said Rezel.

Click below to hear the full interview with Rohana Rezel:

With files from The Early Edition