How one agent's vanishing act became an entrepreneur's fuel

His mom's agent disappeared after a lucrative home sale. Alex Doubet thought real estate could do better.

Alex Doubet is CEO and founder of Door, a Dallas-based brokerage that charges consumers a flat rate of $5,000 per side. The idea for his startup, which launched in 2015, sparked from a conversation with his mom, who in his mid-20s told him a story that he couldn’t shake.