Offering prime +.5 and 30 year mortgage with no balloon. 

I promise you will have options once you finish renovating.If you purchased correctly (location & purchase price), you will have enough equity so that you can either sell it for tax free capital gains, cash out refinance (if mortgage rates are lower), or pull a HELOC to acquire your next property!

Then, you could refinance into a conventional mortgage once the home is built.Would you like any recommendations for lenders open to working with owner-builders?

One has a 162k mortgage, $1250 tax,Insurance,%3.5 30 yr, worth at least 750,000 LTR rent $3200, #2- Los Angeles worth   $750k as well just did a remodel of 150 K, mortgage is 75,000 payment $700.tax,Ins, Mtr/str hybrid.

I would talk to a local bank or mortgage broker to see what you can get for a loan first and then go from there. 

•You’ve fully paid off the mortgage, eliminating lender control.

I've come to realize paying down my mortgage is the best investment I could make.

Mortgage payments - call it 44k.

Then at the very least, someone is putting a significant amount into the equity on your home, and is also paying down your mortgage.

Third, if you don't know the caller, let it go to voicemail and if neither of those work, file a 2nd mortgage lien, payable to you for an amount 5x the value of your home.