The research from Clever Real Estate draws on data from Zillow, the U.S. Census and other sources. A main takeaway is that from 2017 to 2019, “home values increased $6,338 more in states where marijuana is legal in some form, compared to states that haven’t legalized marijuana.”

Part of the reason for the increased value is that legalizing and regulating cannabis means tax revenue for states. And that revenue translates into “new investment in things such as public services and infrastructure,” the company found, driving up property value.

For every $1 million in additional tax revenue from marijuana sales, home values increase by $470, according to the study.