Microsoft billionaire Paul Allen reportedly just bought another home for $5.4 million

paul allen

(Stephen Lovekin / Getty Images)
Microsoft co-founder Paul Allen.

Microsoft co-founder Paul Allen is no stranger to the Mercer Island, Washington, real estate market.

Allen, whose net worth is estimated at $18 billion, is believed to own as many as 11 homes in this ritzy enclave just east of Seattle.

And according to Realtor.com, he just added yet another Mercer Island property to his extensive collection.

Allen reportedly purchased a roughly 3,320-square-foot home for $5.4 million in December. The property is a bungalow that dates back to 1948 and has four bedrooms and four bathrooms.

paul allen mercer island

(Bing Maps)

Allen's primary residence is a 10,000-square-foot waterfront home that has its own helipad and concert hall. The rest of his Mercer Island homes are used to house guests.

Allen also owns property in Beverly Hills, Hawaii, New York City, and the French Riviera, in addition to two superyachts.

NOW WATCH: This $88 million compound is one of the most expensive homes in Silicon Valley history

More From Business Insider

• The incredible real-estate portfolio of Microsoft billionaire Paul Allen
  

• We tried Maple, the gourmet food delivery startup backed by ramen king David Chang — and it was delicious
  

• How residents of a tiny West Virginia community live without any kind of modern technology