Unemployment rates / trends, poverty level, median household income, etc - this can provide you with a large portion of your data.2. 

To make it easier, our trusted partner will provide you with a comprehensive package of all the licenses, permits and tax registrations required for your business as well as the application forms to file with the appropriate licensing authorities.

Ask each contractor to see if there is anything you may have missed, the point being to be as comprehensive as possible from the beginning so you don't get nailed with change orders at the end.

Trying to figure the best route to have the most comprehensive lease and avoid missing important things.

Aside from providing the basics (ie. listing tool to get the property published to 10+ major sites, scheduling tool to schedule viewings, tenant screening with comprehensive applications -- pulled reports from TransUnion, which include nationwide criminal background checks + credit checks + eviction history, digital lease creation tool, rent collection tool, and maintenance tracking tool), some services also offer your tenants waived ACH fees and additional capabilities which makes it an easier sell on your end when getting them to transition over (ie. their ability to report on-time rent payments to the credit bureaus; this can create an added incentive for making sure they pay that rent on time).

I know somebody else who has a home they converted with an ADU ;  his household is just him and his wife,  but their tenant ended up being 5 people.   

Many companies do offer that coverage, otherwise you will need to either find a new homeowners insurance company or purchase a CPL (Comprehensive Personal Liability policy) seperately.

Watch some youtube before hand and make a comprehensive list.

We are developing a comprehensive program to help them accomplish their own wealth accumulation.  

It sounds like it's basically a comprehensive list of ways to build a cash buyers list, plus some video and some other helpful things.