Since their lease is expiring soon, the easiest route might be to just not renew it.

What methods would you suggest to screen potential tenants? 

For all methods you would want to find a market that has strong employment rates, strong income rates for the market, and is a growing or an established market. 

Just have one LLC for all your properties for the most simple/easiest way to buy investments (not an attorney and not legal advice). 

@Anthony KolbuszBRRRR method is a fantastic strategy, especially with your trade experience.

I just feel like they market it in a way where it is the easiest thing in the world of real estate and the best thing and it is worth the price, but it really isn't.  

I am interested in the Brrrr method and I want to evolve from wholesale space to that.

In some older neighborhoods especially historic districts, the tenants look for older houses - they preferred the art deco bathroom tiles, the thick plaster & lath walls over granite countertops and stainless steel appliances.but class D neighborhoods are easiest to tell. 

It’s all BS.If AI truly worked, there’d be no need for DMM, D4$, cold calling, or any of these other methods.

OF COURSE the Contractor is going to say you need to tear it all out and rebuild the wall(s)  because that's the absolute easiest solution and adds additional work for him.