Depending on the opportunity type and the licenses you have, that will either be pretty hard or really hard. 

I don't work on houses, but I have to use B and A-basis values for material strength which in effect means the real material will end up being 20%+ stronger (depend on the material).  

Will need to know density, parking requirements, can the building withstand building on top, lot size, future planning etc…. depending on how well the zoning and platting dept plays with others!

Some Bay Area investors I know are: house hacking, rent by the room, mid-term rentals, STR (depending on your location AirBnbs may not work).

Depending on your multi-family interest, type of project and timing; I might have some interest, if you're open to that idea. 

Depending on where it is, your biggest concern should be will the new furnace, AC and hot water tank will still be there after you close.

I think they used to be more helpful in the past and they made some changes and now they're not so valuable.I see weird and different values for my Airbnb stats depending on if I'm using my laptop or phone to view them.

Once you are licensed depending on your state laws, you must disclose that you are a realtor and intent with the property. 

Then, obtain quotes from at least three actual contractors. ( insurance and all that depending on the work)You'll likely encounter three types of contractors:The Super Expensive Guy: Highly skilled but often in high demand, resulting in premium pricing.The Average Guy: Offers good quality work at a reasonable price.

Local lenders might have specific insights into the market, but it really depends on the type of loan and property you’re pursuing.As for your credit, applying to multiple lenders can result in hard inquiries, which could temporarily impact your score.