This lavish mega mansion, dubbed Taj-on-Swan, has been under construction for the past 2 years and is still not finished. It is being built by well-known entrepreneur, Pankaj Oswal,and may possibly be up for sale after financial difficulties put Oswal’s fertilizer company in receivership. It is located in the exclusive Peppermint Grove neighborhood of Perth, Australia and will include a temple, huge gym, an observatory with a revolving roof and parking for 17 cars. The Oswals’ bought the land for $22.7 million. Once you include construction costs, the total cost rises to a staggering $70 million. If they do happen to sell it, they will most likely lose money as they will probably only get around $35 million for it according to a local expert.

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Philadelphia attorney and entrepreneur Vahan Gureghian and his attorney wife, Danielle, are planning to build a 20,000 square foot mansion at 1071 N. Ocean Boulevard in Palm Beach, FL. The plans were submitted late last year to the town for review. If built, the house will stand on two lots, with a total of nearly 240 feet of oceanfront, which they acquired last year for $28.9 million (the year’s second-largest Palm Beach residential purchase by a single buyer). The most amazing part? The Gureghian’s main house is even BIGGER than this! They live in a 30,000 square foot mega mansion in Gladwyne, PA. Pennsylvania-based architect Frederick L. Bissinger Jr. designed the Palm Beach house as well as their Pennsylvania house. Smith and Moore Architects of West Palm Beach are also involved in the project, and Lang Design Group of West Palm did the landscape plan.

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Gary Kompothecras is a wealthy chiropractor who also runs 1-800-ASK-GARY, a “medical and lawyer referral service” operating in Florida. He owns this whopping 29,948 square foot Beaux-Arts style mega mansion on Point of Rocks Road on Siesta Key in Sarasota, FL. It was built by Steven Bramley Construction and is valued at at $7.4 million. It boasts 7 bedrooms, bowling alley and a subterranean garage.

* Thanks to HOTR Nick for the tip!

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Here’s a look inside a couple’s New Jersey mansion. Owned by Howard and Nancy Brown, this 12,000 square foot home is located at 126 Truman Drive in the Tamcrest Estates neighborhood in Cresskill, NJ. Howard is a successful businessman who started 2 office supply companies. The interior design was done by Lauren Ostrow Interior Design, Inc. The homes in the neighborhood are generally worth between $3.5 and $7 million

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(Jackie and her kids in the 20,000 square foot mansion they currently live in)

Here’s your chance to get an inside look into the life of the family who is building the largest house in the country! “The Queen of Versailles” follows Jackie Siegel, timeshare mogul husband David, and their family as the Siegels build a 90,000 square foot Florida super mansion…..and then watch it collapse with the market. It is one of the first two movies to sell at Sundance 2012. Sounds very entertaining; can’t wait to see this!

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Toy entrepreneurs, Douglas and Melissa Bernstein, have constructed a massive new mega mansion at 167 Cross Highway in Westport, CT. The Bernsteins are the founders of Melissa & Doug, LLC, a toy company based in Wilton, CT. They founded the company in 1988 in their basement. Today, the company is the leading educational toy manufacturing company in the world.

They bought the property in July of 2007 for $5 million and tore down the existing house. The current home, which was built in 2008, is situated on 7.53 acres and has a current appraised value of $19,753,300, down from $23,220,100 in 2010. The home has a total of 12 bedrooms and 15 full bathrooms and 5 half bathrooms. There are a total of 45 rooms in the home. The home has 8 fireplaces. According to Blockshopper, the home measures in at 29,513 square feet, making it one of the largest homes in the state of Connecticut. The Bernsteins are also one of the 15 highest property taxpayers in the state. They paid a whopping $156,419.52 in 2010.

According to Virtual Globetrotting, the first floor alone measures in at 17,127 square feet and the total gross area of the home is 65,524 square feet. Additionally, there are two other small buildings on the property containing additional guest bedrooms and bathrooms.

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