Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with little, maybe even negative, relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560 (almost 30% probability of default), little to no good tradelines, lots of collections & chargeoffs, recent evictions.

Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with little, maybe even negative, relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560 (almost 30% probability of default), little to no good tradelines, lots of collections & chargeoffs, recent evictions.

They usually collect all docs upfront and then underwrite once the appraisal is completed.

Easy peasy. still haven't been able to collect on the judgment though 4 years later ;-)Personally, I wouldn't do a Sandwich Lease Option. 

Do they offer to help you collect or file a claim against them?

If it would concentrate on rent collection only and do it well, it might be okay. 

The withholding can also be stopped altogether, and only actual taxes owed will be collected by filing form MW506NRS at least 21 days prior to settlement and filing it with the Comptroller of Marylands office to get the exact actual tax owed calculated. 

Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with little, maybe even negative, relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560 (almost 30% probability of default), little to no good tradelines, lots of collections & chargeoffs, recent evictions.

And what if the one person you didn't check has a criminal background, has collections, and more?

If it's a verbal tenancy, you have to show a practice of collecting rent that the tenant is no longer abiding by (or perhaps tenant shows up, and honestly states they were obligated to pay rent and haven't done so).When the eviction case is submitted, you give the tenants names, e-mail, phone, address.