Found a Canada Revenue Agency card stuck in my front door yesterday. I'm entirely above-board with taxes, and caught up - so I immediately called this morning to see wtf they wanted. Turns out they were looking for my tenant, not me. He's been living here for a year and a half, so it makes sense that he gives this out as his home address. HE is NOT above-board with Rev. Canada, and nowhere close to being up-to-date with taxes. Here's my concern: my house is not designated as 2 separate living spaces. Guy rents out my basement. I do not declare this as income. Can I get into trouble here????????