Pleaee feel free to reach out if there are any questions you'd like to ask more privately.With respect, Frank, from the veteran DIYer's point-of-view, after you've done enough jobs like this, you begin to lose faith in remediation professionals.

I also realize that location makes a big difference in this respect. 

Their tax rate is based on tax treaties between US and their respective country/residency.Without SS#, foreigners can get ITIN (Individual Tax Indentification Number) from IRS to file returns.If 2018 is first year they brought the properties, then likely not much issue. 

A lot of forum members are very knowledgeable in their respective fields related to real estate investing, whether that is real estate sales, wholesaling, flipping, rentals, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.Discounts on some products and services are offered to BP members: https://www.biggerpockets.com/perks/proIf you haven’t been to it already, you might want to check out the BP blog: https://www.biggerpockets.com/renewsblog/The site has quite a few tools that can be helpful for new members.

@Aaron MoayedIf you dig far enough into IRC Sec 469 and the related regs, you'll find this:Treas Reg Sec §1.469-1(f)(4)Carryover of disallowed deductions and credits(i)In generalIn the case of an activity of a taxpayer with respect to which any deductions or credits are disallowed for a taxable year under § 1.469-1T(f)(2) or (f)(3) (the loss activity)—(A) The disallowed deductions or credits is allocated among the taxpayer's activities for the succeeding taxable year in a manner that reasonably reflects the extent to which each activity continues the loss activity; and(B) The disallowed deductions or credits allocated to an activity under paragraph (f)(4)(i)(A) of this section shall be treated as deductions or credits from the activity for the succeeding taxable year.When reading tax law, what is not mentioned is just as important as what is mentioned.This Treasury Reg section, taken together with the IRC Sec 469 helps establish there is no definite carryover period for passive activity losses -- as opposed to NOL carryover.

I'm sure you already know, but it depends on what environment you're looking for.

Owners of duplexes, like quads, are mostly NC at 93.7%, with CA and GA (1.8%, 0.7% respectively) followed by smaller percentages in other states. 

A lot of forum members are very knowledgeable in their respective fields related to real estate investing, whether that is real estate sales, wholesaling, flipping, rentals, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.If you haven’t been to it already, you might want to check out the BP blog: https://www.biggerpockets.com/renewsblog/The site has quite a few tools that can be helpful for new members.

A lot of forum members are very knowledgeable in their respective fields related to real estate investing, whether that is real estate sales, wholesaling, flipping, rentals, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.The site has quite a few tools that can be helpful for new members.

A lot of forum members are very knowledgeable in their respective fields related to real estate investing, whether that is real estate sales, wholesaling, flipping, rentals, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.Discounts on some products and services are offered to BP members: https://www.biggerpockets.com/perks/proIf you haven’t been to it already, you might want to check out the BP blog: https://www.biggerpockets.com/renewsblog/The site has quite a few tools that can be helpful for new members.