Yes, 'Sunset Boulevard' is based on a true story. It draws inspiration from the real - life experiences and fates of some Hollywood figures during that era.
Selling Sunset isn't directly based on a true story. It's designed to present an engaging and glamorous portrayal of the real estate world, but much of it is fabricated for entertainment value.
Yes. The story draws on the experiences of many in Hollywood at that time. It shows how the glamour can fade and how people can become lost in the pursuit of stardom. There were likely many real - life examples of older stars being forgotten that contributed to the creation of this story.