Less than a decade ago, startups valued at $1 billion or more were so rare — so mythical even — that the tech world took to calling them unicorns. In 2013, there were just 39 such magical creatures, a number that has since surged to more than 600. Residential real estate, a longtime tech desert, had but a couple over the years. But in the last eight months, four proptech startups focused on the residential The post Why software is eating the home appeared first on The Real Deal New York.