As others have stated, you have not provided enough information to determine whether this is a good deal or not.

This method provides an indication of value based on the property's rents.

Keep it simple - sell the property and let each sibling do what it is that they want.If you keep it and do a refinance(to pay for the bills)Who will be on the loan, will it impact everyoen's DTI?

Those work well and you can also get them that work off a cell phone provider; I used to have one that was US Cellular enabled. 

You are casting a very wide net without providing what your prioritized criteria might be.

Bridge Loan: A bridge loan could provide the $150,000 you need until your tenant-free property sells.

The first mortgage will provide a payoff to the sheriff/court and the funds from the auction go to them.

These involve additional costs.I am not saying that there definitely is negative cash flow, but I will say not including known expenses is providing a misleading cash flow estimate.  

Use tools like AirDNA or Mashvisor to provide market data on projected rental income and occupancy rates, and make sure your lender works with appraisers familiar with short-term rentals.

Hi @Brian WongI can provide some ADU contractor recommendations in Los Angeles if you want to DM me.