[drcoastline]

From Zillow as of January 31, 2018.

The median home value in Newbury Park is $693,400. Newbury Park home values have gone up 4.0% over the past year and Zillow predicts they will rise 2.1% within the next year. The median price of homes currently listed in Newbury Park is $775,000 while the median price of homes that sold is $689,000. The median rent price in Newbury Park is $3,100.

So based on median value of $693,400.00 30% is $208,020.00. Knowing nothing else and assuming I had no mortgage that needed to be paid off. IF, and I probably wouldn't went forward I would take a first at 70% and charge 10%+ interest. Max term five years, interest only with a balloon. Have the buyer get a second for the $208,020.00. Bank the $208,000.00 plus the interest ($242,690.00 after five years @10%) in the event I needed to foreclose to get my house back. But again knowing nothing else I probably wouldn't do it. Let him borrow the money against some other asset. You are not in the banking business leave it to the professionals.