I'm sure you and I both understand that as flippers, having control over the construction cannot be stressed enough.

Also make sure you understand everything about adding an ADU including value of the ADYPU, financing, impact from rent control, duration between initial expense and initial income, true cash flow (know the 50% rule, at 50% rent ratio initial property tax will be near 20% of income)- educate.  

Those are going to be my biggest questions when looking for something like this on or off the market.Thank you for the input. previous business owner and building owner has been practicing for a while and built this office for medical office ( receptionist and exam rooms ) with nice decorations.

Find Brandon's videos on YouTube for the "four square" method of analyzing homes and practice.

This implies residential units can be built at lower costs than ADU additions and provide better return. 11) adding an ADU to SFH can make the SFH fall under rent control.

I liked craigslist because I feel in control using it and can tailor to my preferences.

Where are the HVAC controls and do both units have the ability to access it?

Offer the design team a piece of the equity OR pay a premium as incentive to keep to an established timeline (that is within their control). 

Even worse, the investor has no control.

@Jeremy Bloom  the rag on the thermostat can be beat by placing a remote thermostat that is set to the legally required temperature with that remote thermostat actually controlling the temperature.