I am seeing a trend in CA that ADU construction is more cost effective (per unit) than buying on the market by a long shot.

This is not easy to do consistently and effectively.

Quote from @Account Closed: For someone rebuilding their real estate business and looking to transition into larger multifamily deals, what’s the most effective way to position yourself as a valuable partner in syndications—especially when capital is limited but market knowledge, deal-finding ability, and local expertise are strengths?

Less Desirable Areas: Are there neighborhoods we should avoid or areas where BRRRR might be less effective?

Seriously, all I can tell you is this:Showing you screenshots, and a ton of leads from my website is a direct indication of the effectiveness of what I am telling you. 

Please note the information provided below is a layman's definition designed to provide a basic understanding for the general audience.

TIAHi Dawn, regarding your occupancy, with in effective dynamic pricing policy, you should still be able to beat the market while weeding out “bad” guests. 

There are auctions, city grants, and financing programs designed to help people revitalize neighborhoods.

The cost effective way starting is partner with an established wholesaler and they provide people to reach out to or pay for lists and do cold calling/door knocking yourself. 

If it's more complicated eviction.com may be your best bet to use they are pretty cost effective.