The other townhouses in the complex and area are over $650k for the same size and square footage.

Depending on the size of the ADU vs the main property, you would probably be looking at either a "heavy rehab" loan - or a "ground up construction" loan.

I have a similar size duplex in Maryland .  

Has anyone here successfully managed a portfolio of this size remotely?

@William Johnny - I'm local to Philadelphia suburbs and have been investing in SFH for a while and within the past two years investing in small-mid sized multifamily.

This just shows you what lower class properties can bring to the table.

Jake Clopton at Clopton Capital would be a good person to call to see if it's a match based on the size of the deals you want to do.

.-  Expand:  We can't expand at this location, and I have spent 3 months looking at every potential lot and can't find a space the right size, zoning or price to build on. 

I have the ability to get these units built at very favorable costs and there are no real comps I can find so I am at a loss for planning my development strategy with regards to the size of loan I could reasonably get.This will be my first project and my partner's third but he self-financed the two others.

I was able to get approved for a loan but need to bring $25K to the table which I do not have.