Just last week, the Bailey House—Richard Neutra’s only completed Case Study House— for $10.5 million. Now the abode next door is up for sale, as well.

The five-bedroom, eight-bath property in the was originally built for , a co-creator of The Simpsons and an art and architecture collector. Simon had bought the home and the neighboring Bailey House in 2004, but a fire broke out in the former in 2007. Simon decided to clear out the burned structure and replace it with a contemporary new residence, which was completed in 2010. It’s now on the market for $16.5 million, with Frank Langen at Compass holding .(Simon used the Bailey House as an office and guest house.)

The home spans 5,677 square feet and is for sustainable construction. Its modern design includes numerous arched windows and

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