If so, then the lender wil require you to insure at replacement cost - which if less than loan amount may go as low as loan amount BUT recognize in those instances, lets say its replacement value is $250,000 and you insure it for $125,000.

What is the best approach for making offers on Assumable Loans?  

This is with me doing a large portion of the labor to decrease the overall build price in order to keep loan amounts reasonable. 

I figure instead of a private loan, 70% sounded pretty appealing. 

If you're doing 50% of the renovation (saving $$$ on labor) add some custom touches to stand out.

I have one duplex I purchased 8 years ago that has quite a bit of equity and also some cash to finance a conventional loan 20% down for a $300,000 house.

Unless you’re your strategy is using the BRRRR system, DSCR loans don’t make unless you are maxed on residential loans. 

@Erik Breunig  What was problematic with the loan terms?

Right now I'm all about ASSUMABLE loans.

We are using a DSCR loan. 30 year Fixed.