I currently use the basement of my principal residence for a rental business...I have read the cra website regarding expenses and have a few questions for any knowledgable individuals who might be out there. My percentage allocation to rental is 40%; I am assuming if I reshingle the roof then that % is deductible from the cost to repair? Is the finance fee for setting up a heloc to pay for it covered? Can I deduct the interest in the heloc? What about other general landscaping (parking spot for tenant and re-leveling so that water doesn't run into the basement)? How about replacing the fence since the tenant has a dog? The cra website states that most of these should be covered by my interpretation...am I way off?