Daune Nason, founder of the Folsom-based Citizens Again, released details Thursday of his plans for an estimated $3 billion private city equipped with amenities and services for a 150,000 "high-needs" population.

California's homeless population in 2018 was almost 130,000, nearly a quarter of the national total, according to the most recent federal data.

"Qualified citizens" – those who meet as-yet undisclosed criteria – will be allowed to live in the city and are free to leave whenever they wish, says Nason, who adds, "Some might want to stay forever."