‘It’s becoming a mental drain every time we have to deal with something, even though we have decent tenants’

I have a duplex rental property that brings in just over $3,000 a month in rent. I have a 3.5% mortgage with about $240,000 left to pay off. I net about $900 a month cash flow. There is potential for big-ticket maintenance items because the furnaces are 30 years old.