I've seen where people add so many loan extensions with optional payment.Say 1k gives you a 1 or 2 year extension and this can be done 4 or so times.This agreement could be changed so many ways to make it work.You could offer a higher interest rate after 7 years to extend to 15 years.

So you’d be ok coming out of pocket another $130k and paying $780k for this property if the builders fail to perform?

If you and your husband can perform the same line of work in another state like Florida, Texas, Nevada I would move out of CA as soon as possible. 

You can also check online resources like BiggerPockets or Roofstock, which offer general CapEx guidelines based on property type and age.These methods should help you perform a solid preliminary analysis.

STR's can perform even better as you know but its all about location and timing.

In response, I had a plumber and a water restoration company come to assess the situation.The restoration company cut into the drywall, and the plumber thoroughly inspected all the pipes, performed a leak test, and conducted a pressure test.

House hacking and the BRRRR method are great for stretching capital efficiently.

Note investing can be divided into performing vs non performing.  

Quote from @Sanjay Bhagat: BP is not in the business of tracking syndication performance.

As of today however due to a signed affidavit we will be given a court date to follow through with eviction and perform said strategy above with section 8.