A third party site that conducts these types of interviews on real estate investment companies is InvestorMint.

I went through an 'interview process' with my accountant and he had me produce paperwork demonstrating income and expenses for each.

Here are some resources you might read for PA.https://www.macdonaldillig.com/judicial-tax-salehttps://www.taxsaleresources.com/state/pennsylvaniahttps://www.legis.state.pa.us/WU01/LI/LI/US/PDF/1947/0/0542....https://www.indianacountypa.gov/departments/tax-claim/proper...https://www.biggerpockets.com/forums/311/topics/122546-aquir...https://www.vinsko.com/blog/2022/08/tax-sales-sheriff-sales-...https://phillysheriff.com/real-estate/conditions-of-sale-for...https://www.curleyrothman.com/blog/how-do-tax-sales-work-in-...https://www.legis.state.pa.us/WU01/LI/LI/US/PDF/1947/0/0542....Here are some resources you might read for MD.https://www.taxsaleresources.com/blog/expert-interview-with-...

Prior to purchasing an investment property, is it fair to ask to interview the current tenants in place as part of the due diligence? 

Using a conventional loan, you shouldn't use hard money until you gain some experience and know you'll be able to refinance swiftly.If you have some experience and want to do a BRRRR, you should interview multiple GCs, see their results, and pick the one that fits best. 

I did enjoy the interview.

And of course, when you're visiting these markets, you're also going to be interviewing property managers.

But we also allow our current housemates to interview potential new ones and give us their opinion.

Try interviewing at least three managers.1.

Try interviewing at least three managers.1.