Sydney’s biggest mansion listed for $45 million

A mega-mansion with 11 bedrooms, a 40-car garage and an acre of floorspace has just hit the market.‘Le Palais’ in Dural is believed to be Sydney’s largest private home and likely the biggest in Australia.With almost 4000sqm of fully enclosed floor space, the palatial residence is more than 16 times the size of the average newly built Australian detached house, which measured 241sqm in 2024-25 according to the ABS.'Le Palais' in Dural is Australia's largest private home with about an acre of internal floorspace. Picture: realestate.com.au/buyThe home is being sold by Sydney property developer Sid Nassif and his family, with a price guide of $41 million to $45 million.“It's extraordinary - the size, the accommodation, the attention to detail, the level of finishes,” Ken Jacobs of Forbes Global Properties said.“It's significant on an international scale as far as what it offers.”It would cost more than $60 million to build the home today. Picture: realestate.com.au/buyThe Nassif family acquired the 2.02 ha site in 2013 for $1.75 million to establish the luxury residence.If built today, construction would cost between $63 million and $65 million, excluding developer’s costs, GST and la...