Recently, while showing my basement suite to some potential renters, we noticed a fellow (someone we had never seen before) pull out a key and enter the main floor of our main floor suite. We already know who our tenants (3 adults) are and this guy is new. I plan to have a chat with our tenants tomorrow about this "new guy". I suspect that they are tying to defray the $1550 rent for the 1 and 1/2 level suite. However, there will be added wear and tear on the property and we really want this property to be in the same shape as it is now. The property is in Woodcroft in Edmonton and ,although I got a pretty good deal, I still paid a fair amount for this house ($375,000). What would be the best way to approach this? I`m planning to give him a copy of the lease that he signed tomorrow ( which points out that he cannot sublet the suite without my permission). I don`t want to lose him as a tenant, but I`m perturbed that he may be stretching his boundaries (or not)!!Thanks for your input, Tim