At one time, a home elevator was a luxury reserved almost exclusively for the very rich, but builders in Australia say several factors are fueling a boom in personal elevators, The Australian reports. One lift company owner told the source that a little over a decade ago, it installed about 12 elevators a year, but that number has grown to about 300. Affordability is one factor: lift equipment for a private residence runs about AUD30,000-40,000 (US$23,000-30,700), a price that one contractor says is lower than another popular amenity, swimming pools. Another factor is that the population in general is aging, and elevators allow older people to stay in their homes longer. Yet another reason is the popularity of multistory homes.