Residents will be called on to add their names to a growing petition campaigning against the proposed five-star resort at Gnarabup.

Critics of a proposed beachfront development at Margaret River are in a dispute with the developer over where the shoreline will sit in 100 years time, with opponents claiming some houses could end up underwater.

The Shire of Augusta Margaret River says it will consider a review of the land upon which a proposed 120 room resort will be developed in Gnarabup.

Protest group Preserve Gnarabup says a strong showing at Saturday’s rally will drive further talks about ways to halt the proposed resort development on Margaret River’s coast.

Hundreds of people arrived in Margaret River on Saturday afternoon, keen to voice their opposition to the proposed Westin Margaret River Resort development.

Sasha Pol grew up swimming at the sheltered Gnarabup beach below a prime piece of clifftop real estate where a resort and houses are now planned.

High-profile West Australians, including musician John Butler and surfer Taj Burrow, are among those opposing a proposed five-star development.

Musicians John Butler and Dave Mann were among 400 noisy protestors in Margaret River yesterday vowing to stop a five-star resort being built in Gnarabup.

Protest group Preserve Gnarabup is calling on residents opposed to a five-star resort development on the coast to rally tomorrow.

Celebrities have joined a fight with Margaret River locals to raise millions to stop a five-star resort being built in Gnarabup.