It's a bit like getting your sale proceeds as a series of smaller checks instead of one big one.Cost Segregation: This is more about saving on taxes for the property you're buying next, rather than the one you're selling.

Crowdfunding - our commercial loans are syndicated through a series LLC with each series being a single loan.  

You do not need a separate LLC for each property or a series LLC!

We don’t know any PMCs to recommend in the area mentioned, but since selecting the wrong PMC is usually more harmful than selecting a bad tenant, you might want to read our series about “How to Screen a PMC Better than a Tenant”:https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processesWe recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

Once you have a modern system I highly recommend the Honeywell 9000 series wifi thermostats!

I have an old 12 unit apartment complex that is really a series of 3 large houses. 

Even if you pay $300 labor and 150 materials each time, but the work is continuous, it can still be considered as series contracts (one contract after another within a period apart, even if you do 1-3 day a week/month, as long as it has a pattern, it could be considered as such), remember that CSLB and CA are pro workers (particularly with workers compensation), you don't want to mess with them just like you don't want to mess with IRS.

California does not recognize series LLCs.You also want to look at whether a pass-through entity helps your bottom line and your taxes.

Anderson Advisors has an entire series on this. 

Could a long term lease could be written as a series of short term leases (less than 30 days), and thus qualify income from the rental as "Active" and thus allow the tax filer to file as a "real estate professional"?