The land is being sold as the investment is costly with all the illegal dumping and clean-up cost.

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.

Do you want this thing to be the tipping point for them to leave and you have turnover costs and a vacant unit? 

Leaving out auction and foreclosure costs for a second, when you write that check for $220k the trustee is going to pay BigBadBank the $175k they are owed first, then he's going to pay LittleBadBank the remaining $45k, and you will get a clean title as the process is going to wipe the slate clean.

Delapidated building not worth the cost of demolition.5.

You can buy a set of five for under $300, subscription for the recording software is $10 a month, then the cost of WiFi or hotspot.If you've already had a couple break-ins, you are obviously in a high-crime area.

I've done a rent credit for the price it would have cost to me to have the property cleaned in a past rental due to immediate turn around.

It likely is out of date as to cost as this info is quite old (my guess is 5 years but it could be longer):- Rent Recovery Service: offers flat fee service starting at $20. 3 letters start at $30.

You’ll thank me when eviction drama hits, or turnover costs come calling.Fines = Behavior TrainingSometimes, tenants behave worse than toddlers at a candy store.

No management costs as it would be self managed, and estimated property taxes by the average of the past few years.