This rule prevents property flipping fraud.

In the end, in this REI business you have to have a gut instinct that prevents you from doing these kinds of things, if you don't, you are going to have a lot of loss in REI.ARV might as well be a unicorn in this situation as clearly was not reality. 

You also acknowledged you had roots in your drain.

Like Greg said it shouldn't be too much to take care of to prevent a potentially disastrous thing from happening.

This would prevent the tenant from complaining that the window was broken before they occupied.2.

I don't want to perseverate too much and allow analysis paralysis to prevent me from jumping in.

Specifically regarding plumbing you could add (depending on your State or Local Laws) "... unless determined by repair person that such blockage occurred during the time Tenant controlled the Premises and due to some fault or negligence of Tenant, specifically excluding blockages caused by roots or backups from the street..."

A US/Canada tax treaty might exist that will prevent "double taxation".If you're unable to find someone here or at all let me know I can reach out to a few colleagues that might have a recommendation.

To prevent interest from being subject to SE tax and keep it classified as portfolio income, you can limit your level of active involvement and ensure the interest is incidental to your business, rather than the primary focus.

I'm rooting for you to get to number 10!!!