Labor leader Mark McGowan has vowed to sack Perth Lord Mayor Lisa Scaffidi and the "dysfunctional" City of Perth council if he wins next March's state election.

Mr McGowan said it was "inconceivable" Ms Scaffidi was still defying a string of scandals that came to light in the past 12 months relating to undeclared travel and expenses.

The Lord Mayor has ignored public dissent and resisted widespread calls for her resignation since the Corruption and Crime Commission found she had engaged in serious misconduct by accepting undeclared travel and gifts.

Ms Scaffidi is currently in mediation with the Department of Local Government after it released a report alleging she had breached the Local Government Act 45 times by accepting prohibited gifts and failing to properly declare others between 2008 and 2015.

If the two parties can't come to an agreed position over the allegations, Ms Scaffidi will face a State Administrative Tribunal hearing, which could lead to penalties being imposed.

The allegations relate to Ms Scaffidi's attendance at 21 events during the seven-year period, including a BHP-funded $US36,000 business class trip to the Beijing Olympics with her husband Joe, and accommodation at an exclusive Broome resort paid for by property developer Hawaiian Investments.

Ms Scaffidi has continually denied any wrongdoing, maintaining her failure to properly declare gifts and travel was due to the City of Perth's flawed guidelines and policies.

"I am standing firm. I am not resigning, I am waiting for the SAT," she recently said in May about her position.

But after mediation with Local Government officials was adjourned on Monday until late next month, Mr McGowan said the saga had dragged on for too long and vowed to sack Ms Scaffidi and the entire council if elected next March.

"When that CCC report came down and showed the level of travel and perks and non-declaration and failure to comply with the rules and the findings of misconduct and the like, that did it for me," Mr McGowan said.

"Anyone else, anyone else ... if it was an MP they would be hounded out of Parliament.

"I find it inconceivable that it's been allowed to go on the way it has.

"I think it's over."

The Lisa Scaffidi saga continues...

May 21, 2015:
Australian Federal Police refer Perth mayor Lisa Scaffidi to the Corruption and Crime Commission after US investigators found BHP Billiton gave her flights and tickets to the 2008 Beijing Olympics worth up to $US36,000 as part of a wider probe into the firm's entertainment of foreign officials, for which it was later fined $32 million

May 22:
Scaffidi tries to take control of Kings Park, UWA, Crown Casino, the new Perth Stadium and Oxford Street in Leederville among other lucrative landmarks by incorporating them into redrawn City of Perth boundary maps. The grab for greater cash and control later fails when Colin Barnett abandons amalgamation plans

October 5:
CCC declares she failed in her duties by accepting a raft of undeclared gifts and trips

October 6:
Claims she "would've disclosed my underwear" if she knew she had to in relation to the CCC findings, despite being on council for almost 10 years

October 7:
Scaffidi pledges to release crucial documents in her defence but claims CCC Act prevents it. CCC then urges her to release them – she doesn't. Councillors at the City of Perth, including James Limnios, pledge their support for Lisa Scaffidi

October 11:
Deputy Mayor Rob Butler found to have also taken undeclared trip, later dumped by voters

October 12:
City of Perth ratepayers told they can't change postal votes in wake of Scaffidi misconduct

October 14:
Dumped from Local Government Standards Panel, which hears misconduct complaints against councillors

October 16:
Documents reveal she and council spend $1m hosting parties and guests at Council House

October 18:
Narrowly avoids defeat in council elections

November 20:
Forced to accept greater transparency measures to help City of Perth Act pass in Parliament

November 30:
Threatens to quit after Local Government Department launches its own review into her conduct

January 20, 2016:
Councillors sack City of Perth CEO Gary Stevenson, who pushed for greater transparency from council

Late January:
Imposes unofficial media ban on City of Perth council and staff in wake of CEO sacking, which later comes to light

January 27:
Subiaco Mayor says Scaffidi and council are too unstable to take on Subiaco residents

March 1:
Admits there are even more undisclosed overseas trips she has taken that are being probed

March 3:
Tells those worried about safety of Jacob's Ladder to "get a grip" and they deserve a "working over" for raising concerns about its future. It was closed indefinitely for urgent repairs soon after

March 15:
Attacks respected Nine News journalist Liam Bartlett on social media about his "botox" and "bad breath"

March 16:
WA Premier says Scaffidi's reputation is damaged and calls for department to finalise investigation and make it available to the public

May 10: 
Department of Local Government releases report with findings of 45 breaches against the Lord Mayor, relating to non-disclosure of gifts and travel

May 12:
Deputy Lord Mayor James Limnios calls for Lisa Scaffidi to step aside, claiming her position is untenable