Another thing is, the sites that list the manufacture year showed that all the ones I was looking at were built in the 70s.

A good way to find deals is by connecting with local real estate agents, wholesalers, or checking out sites like Facebook groups and Craigslist.

Taking my money and not allowing me access to use your site. 

I think tracking productivity will be tough unless you have someone on site that is checking their work at the end of the day and documenting their progress. 

Search for this in a Michigan Public Notice legal newspaper or an online legal notice aggregator site like USALEGALNOTICES and the fount of MI pre FC/FC data will be available to you.

Regular Inspections: Conduct frequent site visits to monitor progress and ensure quality standards are met.

There were also no records of any people storing units on the site.

Keep in mind this is sponsor-provided material, not something that the site discovered through research, nor verified. 

Have you guys seen the "Best ADUs of 2024" list on Maxable site?

The person who gave me a demonstration mentioned that by using it, listings were much better ranked on Airbnb (he emphasized that the listing updates every night, which is good for the algorithm).