Allen's primary residence is a 10,000-square-foot waterfront home on Mercer Island, a ritzy enclave of Seattle. He owns a total of 11 mansions on the island, including one that's just for his mother and another that houses a full-size basketball court, swimming pool, and fitness center.
Source: Curbed Seattle, Variety
Allen's most recent purchase on Mercer Island was a 3,000-square-foot bungalow that he reportedly paid $5.4 million for.
Source: Realtor.com
He bought Allan Island, off the coast of Washington, in 1992. Though he initially had plans to build a dream home on the island, its secluded nature and lack of electricity made construction difficult. He sold the island in 2013 for a discounted $8 million.
Source: Curbed Seattle
In 1993, Allen purchased a former sheep ranch in Tetonia, Idaho. For years, the property operated as the Teton Ridge Ranch, a five-suite luxury mountain lodge. It closed for business in 2009.
Source: Variety
In 1997, Allen bought a 12,952-square-foot Mediterranean-style home in Beverly Hills. Among its ridiculous amenities is a funicular that shuttles guests from the pool deck to a tennis court located on a lower part of the property.
Source: Variety
Also in 1997, he paid $20 million for "The Enchanted Hill," a Beverly Hills estate that previously belonged to Hollywood legends Frances Marion and Fred Thomson. Allen angered many in the community when he demolished the historic property in 2000. He hasn't built anything on the land since then, though he did terrace the hillside.
Source: The Real Estalker
Allen bought this glassy contemporary home in Malibu's Carbon Beach for $25 million in 2010. In 2014, he sold it to CBS President Les Moonves for $28 million, reportedly because he "hated the sound of the ocean."
Source: Page Six
Allen owns properties in northern California as well. In November 2013, he paid $27 million for this 22,000-square-foot home in Atherton, one of Silicon Valley's wealthiest neighborhoods and the most expensive zip code in the US.
Source: Realtor.com
He dropped a reported $7.5 million for the historic 10-acre property known as the "Thurston Estate" in Kailua-Kona, Hawaii. In addition to a 12,000-square-foot main house, there's an employee residence, beach house, boat shed, and a private harbor.
Source: Variety
In 2011, Allen paid $25 million for the penthouse in an apartment building on Manhattan's Upper East Side. He had purchased an apartment on the 11th floor of the same building in 1996, at a reported price of $13.5 million.
Source: New York Observer
His international real estate holdings include the Villa Maryland, a hilltop mansion in the Côte d'Azur town of St. Jean Cap-Ferrat. He employs a staff of 12 and counts Bono and Andrew Lloyd Webber among his neighbors.
Source: Curbed
He also has a house in London's Holland Park neighborhood, on the same cobblestone street where Richard Branson owns a home.
Source: The Herald
When he heard his favorite Seattle movie theater was going to be demolished, he decided to buy it. His development company, Vulcan, refurbished the Cinerama with state-of-the-art Dolby sound and projection systems, including the world's first Christie 6P laser projector. It reopened in the fall of 2014.
Source: Curbed Seattle