Fees should be clearly stated in writing, easy to understand, and justifiable.

It's just a rule of thumb, and only tells part of the story when buying a rental property.

If it was easy to take $1k and turn it into $10k easily with minimal work and sacrifice like the guru's say, then we would be the richest country in the world.  

The city wants to tear the property and surrounding properties down Zillow said it’s worth 38000The city offer me 13000.I could use some adviceHard to give advice with limited information, but as a general rule, the longer you wait and the further down the line their project is the more valuable your property will be to them.Zillow (and all automatic online) estimates are very unreliable, so don't base on that.

It's easy to post a home run.

As a business, a judge will expect YOU to know all the laws and legal procedures.Make a minor mistake and the judge is unlikely to give you a break and may rule in the tenant's favor.The judge will see the tenant as a consumer and may give them a lot of leeway in court, even give them borderline legal advice.You are in over your head, not having the knowledge to properly handle this.

I'm going to reiterate what's already been mentioned above, but I'm going to actually give you examples of why it's relevant to you to find a U.S. tax professional.1 - You're going to need to file U.S. taxes once you have property down here, there's federal filings, state filings, and sometimes local filings too2 - Tons of tax treaties between the U.S. and Canada that are easy to miss and can cost you a lot of money (important one with rentals - effectively connected income - if the professional you talk to doesn't know what this is, run away)3 - The amount of days you spend in the U.S. needs to be tracked and if you go over a threshold, all of your worldwide income could be taxable by the U.S.4 - Selling real property means up to 15% of your sales proceeds might not be available to you for years (FIRPTA)5 - Lots of nuance at the state and local levels, which both want to take as much money from you as possibleMain takeaway here is that you should find a U.S. based tax person.

I think we are starting to see a theme here: C and D look better on paper than reality and ar easy to buy (for a reason, I might add). 

Rule of thumb: I've been told "Never fall in love with a property".

If it's something as easy as adding a parking pad then I would say it usually can make sense.