Ms. Collins died of breast cancer last fall at age 77. Completed in 1992, the eight-bedroom modern house measures about 20,000 square feet, with terraces overlooking the grounds and the Hollywood Hills. A roughly 100-foot-long art gallery connects the main house to a guest house, which contains offices, a gym and sauna, and a screening room. Outside, the roughly 1-acre property includes a motor court and a swimming pool with a cabana.
In an interview published in 2014, Ms. Collins said she supervised every detail of designing her estate. “From ceilings and sinks to shelves and phone and computer outlets, they all had to be just so,” she said. Ms. Collins, who wrote dozens of novels throughout her career, said she had five writing desks throughout the house and did most of her work in two studies—one off her bedroom and another next to the gym.