A couple started out renting a bedroom on Airbnb to pay the mortgage. Now their cabin village makes over $30,000 a month.

Darrel and Patrice Maxam started renting rooms in their own home on Airbnb. They've grown the side hustle into a full-fledged hospitality business.

Darrel Maxam and Patrice Maxam

• Darrel and Patrice Maxam started renting out bedrooms in their Atlanta home on Airbnb in 2015.
• They ended up building additional units — tiny homes and treehouses — on the property to rent out.
• Their latest project: a group of wooden cabins in upstate New York that make over $30,000 a month.

When...