However, they were built in the late 1990s and evidence of that is all around, with floral wallpaper and gold hardware throughout the property.

As for the rest of your question, those are just detail's, details that the answer to which will become more self-evident after you do step #1.

I'm late to this thread, but the economist is right and actually quite self evidently right.

If you wait for both move in and payment, ask her to show you evidence she has the funds, such as a bank statement or ATM balance. 

Tenant now is threatening to "talk to his lawyer" for the pain he / his family (wife + baby) have been through, and that he is "collecting the evidence". 

You did a fantastic job turning the first complex around, which is evident that a good PM is not an expense - they are an investment.Based on those numbers, gross rents went up $12,500/month (150,000/year), assuming a modest cap rate of 6.5% that is an increase in value of over $2.3MM (don't know the cap rates in Calgary). 

If you can get evidence of this, they can be held liable for not disclosing.

Keep the letter unopened as evidence or keep the receipt as evidence that you followed the law.As far as the threats of litigation, I would not tell him "I will see you in court".

Tell him if he can show you with hard evidence that he can get a better deal for less, then you might consider it.Whenever we were about to raise rents, I'd look at what a tenant could get for that price. 

As you know, this becomes part of the interrogatories and evidence and of course would necessitate notifying SS of our little disagreement here.