But who/what regulation makes it a requirement?

Can someone provide some guidance and possible struggles I may experience with acquiring a construction loan, building costs, selling regulations etc. 

After two renovations in other properties, I sold my own apartment in 2007 through an incredibly complicated series of contractual maneuvers designed to skirt EU  banking regulations, and the bank was as in on it as the buyer was. 

However, the fed regulations say something like the loan can only be for a flip, not an owner-occupied.

Personally, if no windows, electrical, plumbing or structural work is being done I would just get it done.....typically no permits are required for that but theusually are supposed to have “some kind” of license...here in PB county it’s not just the regulated contractors (gc’s, plumbing, electrical, ac, etc) but guys just doing painting, Sheetrock, etc. .....not that it happens all the time of course.

Hi, I am planning on purchasing a new property in the next 3 months. I want the property to have multiple units and have looked at duplexes-quadplexes, but are most likely going to settle on a house with a basement th...

I am not super savvy on the rules of lending so I am sorry if my question proposes something against lending regulation. 

State law and regulations control CL100 issues.

I see on https://actonadu.com/learn-about-adus/adu-regulations-by-city/san-jose-ca-adu-regulations can have only 1 bath.Is it allowed to have second one as 0.5 (is it still considered bath)?

Definitely starting out right - you're about to gain priceless knowledge on the PM, rehab, tenant, regulations, and I'm guessing finance fronts of this crazy game.