2 Sapphire St, Hollywell.The deceased estate at 2 Sapphire St offers 50m of Broadwater frontage as part of a 1058sq m block.It will go under the hammer at 11am on Saturday.More from news02:37International architect Desmond Brooks selling luxury beach villa17 hours ago02:37Gold Coast property: Sovereign Islands mega mansion hits market with $16m price tag2 days agoIn Mermaid Beach a luxury mansion will go under the hammer on Sunday. 2 Sapphire St, Hollywell goes to auction at 11am on Saturday.“One of a handful of mainland Broadwater fronting blocks, this is unquestionably one of the Gold Coast’s most unique and desirable positions,” the listing states.“The sensational preserved Broadwater outlook is ever changing over expanses of blue water across to the natural wonderland of South Stradbroke Island.” 14-16 Ocean St, Mermaid Beach.The two-storey residence at 14-16 Ocean St features a cinema, entertainment room with wet bar and wine cellar, a pool and an alfresco terrace with kitchenette.And on Sunday afternoon, a spectacular Burleigh Heads duplex will be taken to auction.Designed over three levels, the home at 129 George St allows separation between entertaining and sleeping zones while allowing the vista to take centre stage. 14-16 Ocean St, Mermaid Beach will go under the hammer at 11am on Sunday.“We’ve had strong interest and we’ve got an owner who’s committed to selling,” Michael Kollosche of Kollosche Prestige Agents said.“It represents a really good opportunity to buy an affordable large home beachside of Mermaid Beach.” 129 George St, Burleigh Heads.The middle level is flexible with a media room and gym alongside the bedrooms while the lowest level is dedicated to a master retreat.“The way the home was designed is very unique — you’re inside and would have no idea there is another duplex next door.” 129 George St, Burleigh Heads is going to auction at 3pm in Sunday.Marketing Agent Sean Graves of NGU Real Estate Gold Coast said he was expecting a crowd following a successful marketing campaign.“We’ve had lots of interest,” he said.“Over the past three weeks we’ve had 26 groups through.”The upper level forms the social heart of the home with open plan living spaces and the kitchen. Stacking doors bring the indoors outside. Ray White auctioneer Mitch Peereboom in action on the Gold Coast last month. Photo: Richard GoslingA “LANDMARK estate” is among an array of properties set to go under the hammer on the Gold Coast this weekend.The Hollywell property is being offered to the market for the first time in 40 years, and takes waterfront living to a new level.