In recent years, there's been a sharp increase in the number of $100 million (£76m) properties being built for the super-rich – just when we think we've seen the most extravagant billionaire mansion, another crops up that blows it out of the water. From opulent residences with nightclubs and recording studios to palatial private island retreats, these high-end homes are only available to the world's elite. Click or scroll to see inside these stunning billionaire mansions... 

In September 2020, this oceanfront estate landed on the real estate market for $100 million (£75m). Owned by Irish actor, Pierce Brosnan, the Thai-inspired pad is one of the most expensive celebrity homes and boasts 13,000 square feet of lush interior space with amenities that are worthy of a five-star resort. Despite this, it was reported that Brosnan was struggling to sell the property, and it is now no longer on the market.

Built in 2010, after the James Bond actor snapped up two lots of land to turn into his longtime home, the mansion sits behind carved teak entrance gates. Finished off with the finest materials, the sophisticated resort-style property boasts panoramic ocean views from almost every room. 

Inside, the open-plan layout is filled with natural light and features wide-plank teak floors, scissor truss ceilings and floor-to-ceiling windows throughout, making the perfect relaxing beach house. Five bedrooms and 14 bathrooms sit alongside a stylish chef's kitchen with a butler's pantry and a temperature-controlled wine room, that's perfect for entertaining. With a recording studio, screening room with bar and a gym, there's always something to keep you occupied in the plush house. 

The outside is just as impressive and sits on over an acre of land that offers everything you could want and more. An art studio and a two-storey pool house only add to the relaxing vibes of the saltwater swimming pool, landscaped grounds and spa. With 177 feet of private beachfront, it really is the ultimate $100 million (£76m) home. 

This is not just a $100 million (£76m) property, it’s an entire island for sale. Great Island is the largest private island ever to be on sale on the East Coast, according to Realtor, and the 60-acre land mass is bordered by more than a mile of shoreline on the Long Island Sound.

This is no desert island though, and comes with a beautiful three-bedroom stone house, dating back to the early 1900s and spanning 13,000 square feet. The island also features a 19th century farmhouse, seaside bungalow and a beach cottage, totalling in 10 bedrooms across the isle.

Great Island was initially listed for the price of $120 million (£91m) in 2018, but the listing was then removed in 2019. It is now back on the market as one of the most dazzling $100 million (£76m) offerings in this round-up.

With its white columns and grand porticoed entrance, you might well believe that this impeccable mansion on a tree-lined street in the salubrious neighbourhood of St John’s Wood was a relic from a bygone century. But this custom-built house is brand new and designed to the highest spec in every detail. Listed for $104 million (£79m) in 2021, it’s got 10 bedrooms and some jaw-dropping amenities you won’t find in many London homes…

Stepping inside the grand front doors, the double-height hallway leads through to a striking formal drawing room, which features a statement black marble fireplace, a coffered ceiling and tiled floors. Expertly paired with modern furnishings, it makes for an unusual space; miles away from the predominantly neutral 'McMansions' you so often find. Elsewhere on the ground floor there's a dining room, family kitchen, office and guest cloakrooms. 

Spread over three floors, the home has a number of opulent bedrooms. The master suite sits on the first floor, alongside two guest bedrooms and boasts a walk-in wardrobe as well as two separate marble bathrooms. Now that's what we call luxury!

The lower ground floor is jam-packed with the most luxurious amenities. A 45-foot swimming pool sits alongside an in-house spa with a hot tub, sauna and a hammam, with a dressing room that leads out to the private sunken courtyard. This floor also benefits from a games room complete with a cinema, bar, two wine cellars and a state-of-the-art biometric security room. 

Listed at $100m (£76m) back in 2019, Case House 5 features 12,000 square feet of floor space spread over one massive storey. The mid-century-style home is one of five built in this part of Malibu Bluffs and offers views of nearby Surfrider Beach, the Malibu Pier and Catalina Island. 

The modern home features contemporary interiors with spacious rooms that feature windows running the full length of the property. The six-bed, eight-bath home also has a separate guest house and an open-air courtyard for privacy. 

The master bedroom is just as luxurious as the rest of the property with huge floor-to-ceiling doors that lead outside to the expansive decked area and the infinity swimming pool, of course with panoramic views. The house also includes maids' quarters and a basement. 

Fancy having the Queen as a neighbour? This Grade II-listed home in London, UK, sits just opposite Buckingham Palace. Once on the market for a reported $101 million (£76.5m), the home was also offered through a 'try before you buy scheme' and was up for rent at $62,500 (£47k) a week for interested buyers. 

Inside, the home has five reception rooms, which all come with soaring 14-foot ceilings, coving and floor-to-ceiling windows. Designed by Sir James Pennethorne, who was also the architect for Buckingham Palace's ballroom, the home was built between 1859 and 1861. Gone are the swags and traditional décor, in its place is a clean modern scheme finished to an impeccably high standard.

The house was recently given a modern revamp to add lots of desirable features. The property includes a six-person lift, a state-of-the-art security system and an impressive spa area with a 32-foot swimming pool, sauna gym and treatment room.

Once on the market for $150 million (£113m), this home was eventually sold to Tom Gores, the owner of the basketball team, the Detroit Pistons, in 2016 in a complex $100 million (£76m) deal in which multiple properties changed hands. As part of the unusual sale, Gores traded a number of his own Los Angeles properties. 

The 5,300-square-foot master bedroom leads outside to a private heated patio, while the main area is dotted with illuminated trees, three swimming pools and space to park more than 50 cars – one of the most jaw-dropping home features money can buy. 

Currently listed with Sotheby's International Realty for an unspecified price, Pumpkin Key, a private island in the Florida Keys, was on the market for $95 million (£68m) in 2021. It totals 26 acres and is just 10 minutes by helicopter to Miami's South Beach. 

The island is completely self-sufficient with its own electric and water supplies and comes with one main home. The three-bedroom property has two caretaker's cottages and a dock master's apartment as well as an indoor swimming pool. It also comes with an adjacent lot that would make a perfect second home, so you could potentially start your own village!

Additional features on the private island include a 20-slip marina, which has space for a mega-yacht, and tennis courts that also double up as a helipad. Getting around the island is also no problem as golf cart paths circle the entire 26 acres.

The island is also ideal for keen anglers, with fishing and lobster holes dotted around the land. Love to get in the water? Take a boat just three miles offshore to enjoy world-class snorkelling spots. The new owner will also enjoy panoramic views of Card Sound Bay and breathtaking sunsets. 

This elegant equestrian property was on the market for $100 million (£76m) in 2021. Set amongst the rolling hills of the Westchester countryside, just an hour outside of New York City, it's perfect for a deep-pocketed nature lover. Situated on 740 acres of land, it's also the largest privately-owned property in Westchester County. 

In October 2019, two penthouses in the exclusive One Sydney Harbour project reportedly sold for a record-breaking AUS $140 million. That's around USD $105 million (£80m). The most expensive home ever sold in Australia, the mystery buyer purchased the top three floors of the building in Barangaroo South, Sydney.

Set to be completed in 2023, the finished home will be more than 17,000 square feet in size, with the new owner using the top two floors as a private residence, while the lower floor will be a separate guest space. 

It takes a lot for a property to stand out among the numerous architectural masterpieces on Bel Air Road, but this 12-bedroom party palace is the absolute pinnacle of suave living. Currently listed for $139 million (£105m) with Savills, LA FIN has been five years in the making and offers breathtaking views of its stunning surroundings.

As for entertaining, LA FIN competes with the best villas in the business. Outside there is a fully mechanised, 23-foot LED screen and multiple bars, while guests choosing to spend their time inside can visit the sub-zero vodka tasting room, private wine room or the elegant home theatre with motorised seating. Those keen on dancing the night away will enjoy the 6,000-square-foot nightclub.

This Park Avenue Penthouse sits on floor 96 of 96, and is the crowning jewel of this ultra-luxury tower. It has never been on the market before, according to Christie’s International Real Estate, and is currently selling fully furnished for an astonishing $169 million (£128m). 

This penthouse is much bigger than your average inner-city flat at 8,255 square feet, and it includes a 93-foot living and dining room, so there is plenty of space for hosting guests. Panoramic views of Manhattan can be viewed through 240 linear feet of glass, and the ceilings stretch to 12.5 feet.

The primary suite comes with a walk-through dressing room leading to two luxury bathrooms, where floating tubs and carved oval sinks sit atop heated floors. The other five bedrooms all come with ensuite bathrooms and ample closet space.

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