@Dominic C Dessler I would suggest using the tools from this site and do a lot of practice evaluations and let someone review them who has a lot of knowledge.

Finding and evaluating properties also takes time when done correctly.

@Oscar Beteta I would tend to agree but there are quite a few commercial banks that will also consider recent sales and the income for evaluating the appraised value.

Use the BRRRR one evaluating the 4-Plex using a conventional Residential Refinance loan.  

How do I go about finding out local city regulations for this and evaluate the deal?

Its good to hear that you were able to evaluate the good and bad decisions you made during the Renovation and can apply that knowledge to the next one! 

Too many people have no idea how to evaluate a deal past generic numbers they type into a calculator. 

I would push that the seller pays to have them evaluated so you know what potential lifespan/costs you're looking at.

That would basically mean there is no After Repair Value if the property is valued at 85k that makes the transaction tricky Add some improvement costs to ensure that 105k evaluation and we may have something 

Or have you evaluated other markets?