It consists of an 8 unit apartment building being sold with a single family home next door to it, each on their own parcel.

What would it look like today as a multifamily versus single-family?

If you own enough properties you may eventually be able to get business loans/lines of creditRefinance in LLC/Trust is nearly identical as when doing this in your personal name. 

our market is in Columbus Ohio and we are currently doing infill as a strategy. single family home by right can be built on any infill lot in columbus but for multifamily this strategy becomes part of entitlements and rezoning. 

Looking for recommendations from people who have personally used a specific lender and had good experience.

It may pencil out if you're building an extra unit, but just a single bedroom is not going to work.

I think this subject is relevant for starters like me so here it is: is it a good idea to turn a single-family home into a duplex or triplex? 

I am a seasoned commercial real estate broker with a specialization in single-tenant retail properties across the U.S.

Summary of the changes are:Elimination of Single-Family Zoning: The amendment removes zoning districts that previously permitted only single-family or two-family residences.

SB-684 makes it easier to develop up to 10 units on vacant lots in single-family zones without needing a zoning change.