We welcome any suggestions or insights you may have.Additionally, if anyone has information on the approximate cost of building a duplex and triplex in California, we would greatly appreciate your input.To provide context, neighboring properties in the area we bought offer insights into the local housing market.

This would cost 10-12k and 2-3 months to complete2.

My main concern is the limited cash I have available for the down payment and renovation costs.

If you truly need to refinance, you may want to look into a bridge cash out loan and have the permit cost as the budget + any other rehab you still may need to do to get this fully permitted.

It lets you borrow against that equity to help finance a down payment or closing costs.

@Garrett BowserAgree with Wayne as it will increase his insurance and bond costs for having this project on the books along with the liability.I would guess 3-5% of project costs.

But that is in line.As mentioned, the cost of finding a new renter for $100 makes zero economic sense. 

So repair costs are $18,000.  

If so what's the cost per sqft?

Buyers have significantly more negotiating power.