Some people are mentioning how they’ve been successful buying OOS site unseen.BUT, let’s keep in mind that that was a totally different market ago where almost everybody succeeded (low rates, incredible appreciation etc.) 

It explains the team that you should develop to have a strong foundation under you while investing remotely.https://www.biggerpockets.com/blog/core-four-real-estate-team

The quick answer is "yes" AND there are deal analyzers on BP's site.

I dont know the delivery time on a ADU but I'd assume same with site plans and zoning. but how do you get your money out of that?

Many of the OTAs and lead gen sites, like Furnished Finder, are pushing credit card payments. 99.9% of the time I get a message from FF saying 'your tenant would prefer to pay by credit card so activate Stripe now!' 

I've been on the scavenger hunt trying to find it, county site has a summary only.

Toxic waste site on Super Fund List  6.

Would any of you recommend a certain site that specifically handles formation of LLC for rental property?  

A new site for NH foreclosure auctions just launched called Bid Pirate, worth investigating.

You can find owners' names and mailing addresses on the county assessors site.