Don't drive a new car to town; we have some of the best body and mechanics in Texas - in chop shops.Ah, just kidding. 

I just graduated from college in June with a degree in mechanical engineering, but I've found that my true passion and interest is in real estate.

TL;DR:  You will likely need to pay taxes in both the U.S. and Canada, but the Canada-U.S. tax treaty provides mechanisms to avoid double taxation.  

Under California foreclosure law, can a vendor place a mechanics lien on a home for work performed for the prior owner after the foreclosure sale and the recording (perfecting) of the deed?

All of your mechanical systems are interconnected, and you will want to know from your electrician if you will need to upgrade the service no matter which direction you go.

Just like anything it comes down to doing your due diligence and inspecting the property before you buy it so you are aware of the age of the capex and all the mechanicals. 

I ask it because every liens drop in a buy of Tax sale (minus the municipal and mechanical liens... unti where I know) and I payed all of delinquent tax when I buyed it from the Alabama Estate.

If your properties are located in city with SB 721 enforcement mechanisms in place, I would contact the city for inspection guidelines and then find an inspector and contractor who understand those guidelines.At the risk of sounding undiplomatic, I have zero desire to pay someone $4K to drill holes in my balconies.

Think of it this way, would you rent a car where the rental agency requires you to cover costs if it mechanically broke down during normal use? 

haha,Nah mateNot my style.Unfortunately, we live in a world where information is power so I'm forced to collect it in order to protect my team and company.But I'd never F@#$ with someone else's business even if they aren't legit.Only as a defense mechanism if we are threatened and pushed far enough where I don't have another choice.