@Urvesh PatelIf you are looking in Columbus for MTR I would check out  - 43206, 43201/43202, and 43203-43206: Nationwide Children's hospital -43201/43202: Wexner Medical Center, (This one is brand new) The Arthur G.

I'd look for a good brand and spend some time looking at reviews from a big box store. 

Loan-to-value allowances vary, but seem to top out at 75-80%, and even that figure can be misleadingly optimistic in light of the appraisal difficulties (described below).

@Yael DoronHi - I don't invest in Phoenix but was just curious if you already own real estate and are looking to expand into Phoenix, or are brand new.

I put $6000 into repairs, mostly paint, new light fixtures, new appliances, painting cabinets and fix a small leak coming from the roof.

The main issue is that to do the ADU you have to spend so much bringing other items up to code like electrical, plumbing, lighting (windows) and egress.

Connecting with local GC groups in your area will help you connect with subcontractors, find out tips and tricks of the trade in your local area (since all areas and their real estate differ slightly).Also, have you considered the motivation behind building a brand-new duplex versus finding one on the market?

You are complaining after four months of trying in a brand new business that you didn't know anything about?

Have a big database, sellers who look up my brand/appeal.

My advice is focus now on building your branding, business and client base in real estate.