Assume the potential applicant does not have the documentation needed to be thoroughly validated. 

Document everything todayPhotos and video of every roomCount visible animalsNote odors, biohazard conditions, structural damageSave inspection reportsYou may need this for:Eviction courtAnimal controlInsuranceCivil damages later2.

Sounds like you probably can do that; document it all with dates/times/more. 

While most guidelines can be followed, lenders often want to see additional documentation or reassurance that the borrower is not at risk of further financial distress.

However, you may want to confirm with the Assessor's office that the transfer won't impact your approved term and ensure documentation is properly submitted.

Get pre-approved and ask a lot of questions about how the underwriter views the rental income from other units and what documentation will be needed.The bigger issue will be makng sure you include in your purchase offer all the documentation you need to verify lease amounts & terms (copy of lease(s)), payment history (rent ledgers) and how qualified the tenants are.

If instead you work with lenders and brokers who actually understand credit, documentation, collateral, and borrower behavior, you can acquire lightly seasoned or newly originated performing notes that still meet yield and LTV targets because the underwriting is strong, not because time has passed.

That is why it is critical to document appliances in the contract with the model and serial numbers if possible and verify them again at final walkthrough.

This is less about the insurance carrier and more about your loan documents.

If the software is not simplifying your life or making you more accurate, you shouldn't use it.Software does have extremely helpful features like online payments, marketing syndication (click a button and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.