I use tenantbackgroundsearch.com, although many of the vendors provide automated reports that are nearly identical. 

Would we be able to put the home in the Holding LLC since our names are directly on it (albeit a Delaware LLC meant to hide our identities)?

@Darrick Lowe, We just had a situation nearly identical to this-  Eastern PA.

Then there's the issue with doing a 1031 which is fine but my property taxes would go from $2200/yr to $4400/yr for an identical home. 

Be sure you have verified their identity prior to sharing any sensitive information.Here’s the IRS article for further information.Have you had any of these scenarios happen to you?

We are trying to sell two identical buildings separated by an enclosed courtyard.  

Using a VA loan for a second property, where I’d move in and rent out my current home.When I made an offer on a fixer-upper (I didn’t win that bid), the loan officer mentioned it might be difficult to convince the underwriter why I’d need another VA loan for a second property in the same area, especially since the new home is almost identical to my current one (same size, age, school district, etc.).

Identical situation happened to me so I went to a new lender 2 weeks before closing and everything went perfect.

Here are some popular skiptracing platforms and websites that investors often use:TLOxp: This is a service by TransUnion and offers a comprehensive database to find detailed personal records.Spokeo: Useful for basic information and sometimes provides email addresses and phone numbers.Whitepages Pro (now Ekata): Offers identity verification data, including phone numbers, addresses, and more.BeenVerified: This service aggregates information from various sources, giving you phone numbers, email addresses, and other details.PeopleFinders: Similar to BeenVerified, it pulls from various sources and provides detailed reports on individuals.BatchSkipTracing: Designed specifically for real estate professionals.

While not identical it can be similar, the larger the deal the greater the mistakes are emphasized.I have been in real estate for a few circles around the sun and I would not myself nor recommend to others to bite something off this big to start.