I personally use a service for all my LLCs I use a company called Prime Corporate services and have a holding company with all my LLCS under them.

I also started a general construction company less than a year ago and gotta keep my team busy!

But the reviews of the all the top home warranty companies don't give a good feeling about the practicality of using one including poor service, delayed appointments, multiple visits to fix an issue, keep patching the appliances and systems instead of replacing, offering low replacement costs if they decide to replace, not to mention the tenant frustrations because of these issues.

I own a STR property management company in Mariposa County.

I'd recommend talking to at least 2 Property Management companies in Sacramento to see what rents are going for condos.

good to be in great company!

I recently launched an STR management company in Kissimmee FL and decided to set up an account with Hostaway.

no, all he gave was a invoice with his company name and address.

You can search for all the Form D filings and do a data dump of that list (note: it will be HUGE) and then you can start just searching through that list of companies.  

If you have the cost segregation done by a reputable company then even if you get audited, you'll have proper support to back up your deductions.Now whether it's worth it - A cost segregation study can be extremely beneficial but its a case by case basis that depends on a multitude of factors.