Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with zero or negative relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560, little to no good tradelines, lots of collections & chargeoffs, recent evictions.

She paid rent till February using one of the rent collection platform that I have been using.

We use Autohost to automate this process via an online check-in system: https://www.autohost.ai/You can also use it to gather additional information and place a hold on their credit card, similar to a hotel.The one downside of Autohost, is that it doesn't have an automated way to collect the ID for all the adult guests (although it collects names + email from the guest).Finally, Autohost can also be used to have the guests sign your rental agreement and agree to your house rules.

This is one of a plethora of reasons that many ADU additions are not optimal RE investments.  

As a specialized real estate CPA, I'm here to provide expert guidance on your most complex tax matters, from navigating 1031 exchanges and cost segregation studies to optimizing your rental property deductions and handling multi-entity structures.

I would like to use it to collect payments and track bank transactions but I am concerned about security. 

I am interested in some parts of the portfolio, but don't want the entire collection.

We currently use Avail for rent collection.

Finally, appreciation is predictable and linear.I always work with my local property manager partner when selecting and analyzing a property with my investors and use them to manage the property after purchase to optimize the ownership and investment experience.To your success!

I use the Zelle app to collect upfront money from tenants and it is instantaneous with no take backs but it is not automatic so I doubt you could set it and forget it.