And does anyone know anyone or recommend an ADU contractor or appraiser in my area (90031). 

I can recommend a local attorney.

I am looking to have a fan installed in the bathroom of one of my units however there is no switch in the bathroom so I would also need that done, I was wondering if anyone has recommendations for contractors.

An asset protection lawyer would likely recommend a separate LLC for each rental property you own because this limits your liability in case of a lawsuit (usually to the holdings of that LLC). 

Do you have any recommendations? 

Elie, I would recommend telling everyone you interact with that you are looking for properties that the owner may sell that are not listed.

Do you have any recommendations?

Here are my criteria:1.Purchase value below 75k2.At least one college3.Diverse economy4.Not high crime5.Growing population 6.Not smaller then 10k peopleAny recommendations ?

Most issues are now sol Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

Normally, I would expect to see all units prior to writing an offer and that is still what I recommend; however, my client chose to proceed without seeing the other units when prompted; presumably because the building was so new.First lesson: do your best to see all units before writing an offer.