Fair Field, The Hamptons, NY

Rennert, the billionaire home owner caused a fuss with his neighbors because he was building such an enormous mansion beach front home in Sagaponack, New York – it’s even considered one of the largest occupied residential compounds in the United States. The house outraged local residents, who claimed the billionaire mansion home owner originally planned to use it as a mega spa, a huge hotel, or a maybe even a income property like a religious retreat. Rennert denied such allegations, and the local paper later issued an apology. Rennert named his home after the adjoining body of water, Fairfield Pond.

This 63 acre home is considered the largest residential compound in America. The 29 bedroom beachfront home of publicity shy billionaire Ira Rennert has 5 sports courts.

The lavish compound includes three swimming pools, a 164-seat screening theater, two bowling alleys, two tennis courts, two squash courts, a basketball court, and so many other buildings that an on-site power plant needed to be built to supply electricity to the estate.

Ira Leon Rennert born May 31st, 1934 is an American investor and businessman. Today he controls one of the nation’s largest privately held industrial empires, and They have at least two of everything. Two tennis courts, two bowling alleys and three swimming pools because you never know when you may need an extra one. The property even has its own power station to support the estate. This way they never ever have to leave and risk bumping into the riff raff.

The beach-front complex is known as Fairfield, and it nestles in a mere 255,000 m² of land (63 acres). The buildings themselves have over 10,000 m² of floor-space, and contain 29 bedrooms, 39 bathrooms, a 28 m long dining room, a bowling alley, a squash court and by all accounts a $150,000 hot tub.

The Hamptons is where you can find the country’s largest residential compound.

Billionaire, Ira Renert calls it home.

Italianate in design, there are 29 bedrooms, 39 bathrooms, squash and tennis courts and numerous other amenities. This gigantic house of 110,00 feet has everything!

Estimated to have a net worth of $6.5 billion as of September 2012, Ira Rennert purportedly showcases a portion of his massive art collection worth in excess of $500 million at the estate, so security at the gated compound is obviously a very high priority.

buckingham palace

The 18th century palace beat off competition from the ultra-modern Antilia building in Mumbai, India, which is owned by Indian billionaire Mukesh Ambani, and Villa Leopolda, the lavish home of Brazilian socialite Lily Safra in Cote D'Azure, France. Despite competition from sprawling homes in India and the US, Buckingham Palace is the most expensive property in the world at just over £1billion.

Queen Elizabeth of UK may not be the richest in the world but resides in the most expensive home. The Buckingham Palace was built for the Duke of Buckingham – in whose honor it is named – in 1703, and is the official residence of the British monarchy. It has an astonishing 775 rooms and the largest private garden in London. The palace features in the itinerary of almost anyone visiting London.

One can't help wondering what would happen if all the toilets were flushed simultaneously. As well as the ample room space, the Palace is furnished with 514 doors, 760 windows, 350 clocks and over 40,000 light bulbs. Pity the poor electrician. You'd enjoy a life of luxury, once you hoovered all the corgi hairs out of the sofas.

The valuation of the palace is $1.55 billion, as per the National Building Society. While many know about the Buckingham Palace, many of these expensive residential estates are almost as unknown to the world as their owners are. There are some other expensive houses, like the most expensive apartment which is the Odeon Tower Penthouse in Monaco, owned by the Marzocco Family, the costliest celebrity home which is Santa Barbara Estate in Mentecito which belongs to television tycoon Oprah Winfrey, and the priciest castle, which is the Ashford Castle in Ireland.

Location: London

Value: $1.55 billion

Details: Technically still a house, but certainly not for sale, the Queen’s residence was valued at roughly $1.5 billion by the Nationwide Building Society in 2012. The property holds 775 rooms, including 19 state rooms, 52 bedrooms, 188 staff rooms, 92 offices, and 78 bathrooms.

Owner: The British Sovereign—Currently Queen Elizabeth II, who has ruled since February 6, 1952.

Antilia

Antilia ,a 27-story skyscraper on the pricey Altamount Road in Mumbai, is the most expensive home in the world, valued at upwards of $1 billion. Mukesh Ambani, an Indian business tycoon and multibillionaire, moved into the 400,000-square-foot mansion in 2012 with his wife and three children. A business tycoon and the wealthiest man in India with an estimated net worth of $22.3 billion, recently moved into the world's most expensive home with his wife and three children. The home, called Antilia, sits on Mumbai's tony Altamount Road.

It reportedly takes a staff of 600 to maintain the world’s most expensive home. But Mukesh Ambani makes sure that his employees are taken care of as well. There’s also an entourage room where security/body guards and other assistants can relax. The property sits on one of the most expensive roads to live on across the globe, the Altamount Road, in South Mumbai. Properties across this stretch go up to a whopping $25,000 per-square-meter. This is not only the poshest road in India but one of the poshest across the globe. Most people have criticized this structure, because rumor had it that it was laid by the slums, but that is not the case, although the slums can be seen from this house at a far distance.

Certainly the property - which has three helipads, six floors of parking and a series of floating gardens - is comfortable enough. According to reports, the Ambani family is concerned the building fails to conform with the ancient Indian architectural principles of vastu shastra, and has refused to move in for fear the home will curse them with bad luck.

The title of the most outrageously expensive property in the world still belongs to Mukesh Ambani's Antilia in Mumbai," Forbes said adding it is the world's most expensive home "far and away" with construction costs reported between a range of $one billion to two billion.

Putting Antilia's scale and cost into perspective, Forbes compared it to '7 World Trade Center', a 52-story tower that stands near Ground Zero in Manhattan with 1.7 million square feet of office space that was reportedly built for $2 billion.

The steel magnate is believed to own three homes on the high-security street known as 'Billionaires Row', including a neo-Georgian mansion near the Israeli embassy.

The house's construction has attracted some criticism from some who say it is far too grand for a city like Mumbai, where millions of people live in slums, and hundreds of thousands don't have a roof over their head. The house (if you can refer to a structure like that by a humble name like ‘house’) is a self-contained unit. Beginning with the lobby that has 9 elevators, Antilia has a spa, temple, ballroom (complete with gold and glass chandelier), private cinema, yoga studio, an ice cream room, several swimming pools, and a 2-story recreation center. There is also a snow room that showers artificial snowflakes on you! Just the place you’d want to head to when Mumbai’s heat becomes overpowering.

Between the time construction commenced, in 2008, and when it was completed, in late 2010, press coverage of the dwelling grew ever more fantastical and rabid. Does it really have its own air-traffic-control system and three heliports? Can it create its own weather? The intrigue peaked last October when The New York Times ran a prominent piece reporting that the family had yet to move in, perhaps due to glitches with respect to Vastu Shastra, the Hindu philosophy that guides directional alignments in architecture to create spiritual harmony.

Ellison Estate

Location: Woodside, California

Value: $200 million

Details: Less a house than a compound, this 23-acre property is home to 10 buildings, a man-man lake, koi pond, tea house, and bath house.

Owner: Larry Ellison—Co-founder of Oracle and the third-richest man in the world in 2013, according to Forbes.

Located at Woodside in California, this is more of a compound than a house, and it consists of 10 buildings. Apart from that, the compound also a man-made lake, a koi pond, a bath house and also a tea house. Together, the area covered by the Ellison estate is 23 acres, and it is owned by Larry Ellison, who is the co-founder of Oracle and was third richest man of 2013 by none other than Forbes. Its value is $200 million.

 The fact that it is one of the most stunning Japanese-style estates you’ve ever seen. Complete with a koi pond, a lake surrounding the estate (man-made, if you will), a tea house, and a bath house and is spread out over a breathtaking 23 acres. Constructed by Paul Driscoe, a Sen Buddhist teacher, hundreds of oaks, pines, redwoods and cherry blossoms surround this pristine property, pegging this property at $70 million.

While its assessment in 2013 revealed that it was worth US $73.2 million, the property’s building cost was more about US $200 million. The estate is just one of the many properties held by Elison, who owns nearly whole neighborhoods in Mailbu and Lake Tahoe area.

The estate is just one of the many properties held by Elison, who owns nearly whole neighborhoods in Mailbu and Lake Tahoe area. Namba has also moved 3,500 tons of rock and over 80,000 cubic yards of earth to construct islands and hills.

Other highlights of the property include antique Japanese screens, doors, stone lanterns and other authentic Japanese items. Seven miles of underground utilities were constructed, including a six-car underground garage, and tunnels for household staff.

Ellison’s estate, which was also designed with the help of Ron Herman and landscape designer Gil Gibson, features a large waterfall, a round stone bridge, pathways leading to a courtyard, and an authentic teahouse, which was bought from Japan and reassembled in Woodside.

Villa Leopolda the $750 milliion house

Built from 1929 to 1931 and designed by an American architect, Ogden Codman, Jr., on an estate once owned by King Leopold II of Belgium. Codman’s extensive designs and construction gave the estate, once a series of unrelated buildings, and its current appearance.

Billionaire Lily Safra’s house is a historic villa in Villefranche-sur-Mer on the French Riviera – Villa La Leopolda, the second most expensive house in the world. A native of Brazil, she is a citizen of Monaco with homes in Geneva and Monaco, and also spends time in New York and London.

Lily Safra, born Lily Watkins, is the widow of Edmond J. Safra, a banker who died in a fire in 1999. Lily Safra’s net worth is $1.2 billion.

Named after Belgian King Leopold II, the expansive Villa Leopolda is both the largest and the most expensive French villa in the world. Overlooking the Mediterranean, it was both a military hospital during WWI and a set for Alfred Hitchcock's 1955 film, To Catch a Thief. In 2011, it was purchased by an anonymous Russian oligarch, sparking intrigue.

Since the luxury home was built, there have been multiple rumors about who has and who hasn't lived there. Bill Gates is just one of the many people who have never called Villa Leopolda home, yet is one of the most commonly placed people within the estate's walls. Regardless of who owns it, Villa Leopolda can easily be considered one of the great wonders of the world.

Built from 1929 to 1931 and designed by an American architect, Ogden Codman, Jr., on an estate once owned by King Leopold II of Belgium. Codman’s extensive designs and construction gave the estate, once a series of unrelated buildings, and its current appearance.

His neo-Palladian vision, coupled with his in-depth knowledge of historical precedent, resulted in the construction of a spectacular villa with extensive gardens and landscaping. Floor plans, letters, records, and stereo glass-plate views of the newly completed property still exist in the collections of the Society for the Preservation of New England Antiquities.

At Codman’s death in 1951 the estate was sold to Izaak Walton Killam whose wife inherited the place after his death. Villa Leopolda was used during the WWI as a military hospital.

By 1988 Villa Leopolda on the French Riviera had become one of the domiciles of the banker Edmond Safra. The Safras commissioned Renzo Mongiardino as interior designer, while the second-floor bedrooms were decorated by Mica Ertegun. It offers many facilities such as a swimming pool, 11 bedrooms, 14 bathrooms garden, swimming pool, private beach front, sporting courts and a bowling alley.

But this amazing villa was bought by a mysterious Russian billionaire who has spend $750 million and has set a new world record for the amazing amount of money he spend. The previous record for a house was said to be the £57 million that Lakshmi Mittal, the steel tycoon, paid for a property in Kensington Palace Gardens in 2004.

Is not that odd that a Russian billionaire has bought the villa, because since the early ‘90s, Russian oligarchs, drawn by memories of the Riviera-mad Old Russian Aristocracy have been piling into seaside properties at Cap Ferrat, Cap d’Antibes, Saint-Tropez and more other playgrounds.

The seller of the Most Expensive House in the World:Villa Leopolda had the steel nerve required to wait for the astronomical bid for Villa Leopolda on the French Riviera and the wait has been awarded.

The Expensive House: Villa Leopolda invokes the style of the Belle Époque and for that it is registered as a French monument historique.

By 1988 Villa Leopolda on the French Riviera had become one of the domiciles of the banker Edmond Safra. The Safras commissioned Renzo Mongiardino as interior designer, while the second-floor bedrooms were decorated by Mica Ertegun. It offers many facilities such as a swimming pool, 11 bedrooms, 14 bathrooms garden, swimming pool, private beach front, sporting courts and a bowling alley.

The Duke Mansion

Some of the greatest, largest, most exqisite, most expensive homes in the world are on the market, but before you write out that initial deposit, remember your place in the world. Let's take you on a journey to visit the modern palaces. Here's countdown of the most expensive houses in the world.

So start the journey with ascending order of the extravagant houses in the world.

          Duke Semans Mansion---- Fift avenue, Manhattan, New York

Owner-Carlos Helu Slim

Net worth- $88 million

This Mansion is build in 1915 and tripled by its most famous owner James Buchanan Duke, The Duke Mansion has been home and host to leaders of the 20th century. 

 The Mexican billionaire Carlos Slim lists Manhattan Townhouse for $80 million, with the average price of an apartment in Manhattan now comfortably nested over $1 million, many New Yorkers are pretty blase about all those zeros. This Fifth Avenue property is a 20,000 square-foot Duke Semans Mansions, located at 1009 Fifth Avenue in New York. The house is a 8-storey building with French Renaissance interior. The house is tagged on a sale for $88 million, if that goes through it will the most expensive house in New york.

The 8 -storey, 20,000-square-foot Beaux-Arts building with French Renaissance interior is one of  those landmark mansions that has its own name or, in this case, names. It features high ceilings, gold-leaf trimmed fixtures, and a sweeping staricase, it has grand, well-lighted rooms, 11 marble fireplaces, three elevators and a sweeping brass and wroughty-iron-staircase.

Deal will be surely most expensive in New York.

Fourteen interested parties have visited the property and three have bid on it, according to Sharon Baum, a senior vice president with the Corcoran Group, who is sharing the listing with Paula Del Nunzio and Shirley Mueller of Brown Harris Stevens. All three brokers and members of the Semans family declined to identify a prospective buyer, and all said no deal had been made final.

Carlos slim is world's 4 the most richest person, and after selling the Mansion he is about $90 million richer. He said at the time he considered the house an investment and wouldn’t live there. Built from 1899-1901, the mansion has a French Renaissance interior and was originally owned by an American Tobacco Company tycoon,