@Ashish Acharya and @Christopher SmithThe quote came from:  https://support.taxslayer.com/hc/en-us/articles/360046230792-Should-I-complete-a-Schedule-C-or-a-Schedule-E-if-I-am-a-real-estate-professional-However, I have seen similar statements posted in many other forums and even in videos - I just snagged the first one I could find for documentation purposes. 

Netatmo also makes a unit that monitors sound but built into it's weather station device. https://shop.netatmo.com/en-us...It also monitors CO2 levels which interestingly I've seen a company take that data point and use some logic to determine how many people are in a property based on the level of CO2 present so you could determine unauthorized guests and /or parties.

It's 1550 square feet with 2 king suites and two master en suites  

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That's not fare, cause wer not all inbread egnorunt hillbillys her en ohio!

PNC has a lot of useful information on their website:  https://www.pnc.com/en/corporate-and-institutional...Regarding your final question, handle the financing and get these properties on the market asap!   

At the en of 10 years the loan came due and I had to refi.

q=best+ever+apartment+syndication+book&ie=UTF-8&oe=UTF-8&hl=en-us&client=safari

Quick google says...people who qualify:https://support.taxslayer.com/hc/en-us/articles/360015905251-Who-can-claim-the-Minnesota-Property-Tax-Credit-M1PR-The form and instructions:https://www.revenue.state.mn.u...You can file this separately from your taxes. 

Heres the link to the City's website going over the details. https://www.cityofchicago.org/city/en/depts/cdot/supp_info/sidewalk_snow_removal.html