The Town of Cottesloe is under mounting pressure to resolve a stand-off over public toilets at Perth's most famous beach, with Premier Mark McGowan describing the situation as an embarrassment to Western Australia.

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A stoush between the council and the management of the Indiana Teahouse restaurant has resulted in the only public toilets at the beach being locked up, and portable toilets trucked in as a replacement.

The council arranged for the orange portaloos to be transported to the beachfront on Monday after the stalemate dragged on for more than a week.

Indiana's management holds the lease over the building that houses the public toilets, and said it was under no obligation to maintain the facility.

Mr McGowan said the presence of portaloos on one of the state's most iconic beaches was "inappropriate".

"Get on and fix it ASAP, don't muck around, this is embarrassing for the council and embarrassing for Western Australia," Mr McGowan said.

"They should repair the toilets under Indiana Teahouse and get on and build a new toilet block. It is not rocket science."

Cottesloe is one of Perth's most popular beaches. ( ABC News: Hayley Roman )

Cottesloe Mayor Phil Angers said negotiations were ongoing and he was hopeful a resolution would be reached to reopen the toilets.

Mr McGowan ruled out the prospect of State Government money being put towards the construction of a new bathroom facility, describing that as the responsibility of the local council.

Honey calls for toilet money

Liberal member for Cottesloe David Honey urged the State Government to intervene, saying people were "appalled" by the situation.

"There is an immediate issue here with the toilets and the council needs some help," Dr Honey said.

"The Town of Cottesloe is a very small council, the State Government is awash with money … they should be able to come and help here."

The toilets at Cottesloe Beach have been locked up since the stoush began. ( ABC News: Jacob Kagi )

Beachgoer Gaela Hilditch said the toilet situation was "criminal", urging the State Government to help out.

"It is just so disappointing," she said.

"This is a world iconic beach, we need a lot better than this."

Dr Honey said he wanted to see the State Government back a major improvement of the Cottesloe Beach area, on a similar scale to the redevelopments further north at Scarborough.

"Cottesloe is an iconic beach and a tremendous drawcard for international tourists," Dr Honey said.

Mr McGowan called for an improvement to the entire Cottesloe foreshore, saying he wanted to see higher density housing and more restaurants and bars.