We are considering joining a couple mentor groups to build relationships with more investors.

It is a considerably good price considering the area, I'm just not sure on whether the rental income is worth paying for.Apart from about $10,000 it is fully rennovated and ready to be rented out within 2-3 months.Thanks for any advice!

An example might be a commercial tenant with 50% of the space in a building sends an after-letter notice that it now plans to vacate at the end of its lease term in 6 months.

I have a $2M building I bought for $935k, 3.5% down. 

Again, this is a conversation to have with your accountant to ensure the benefits would outweigh the costs.Another misconception is that there is little value in a cost segregation study for properties that do not have a lot of personal property in them or very little interior build out, such as industrial warehouses.

I currently work with investors looking to build their portfolio with single-family, long-term rentals while managing for them on the back end, making is hands-free for the investor to still work their W-2 job and live their everyday lives and spend it with family, hobbies, etc. 

If smaller living space was the answer we could just build a boatload of 1000 unit apartment buildings.

I was thinking that by giving a single builder rights to build on the land, I would get 1% of each contract price, something along those lines.

Based on that number of units I would expect much higher figures - did you buy these buildings all/mostly cash?

Then, start building your connection with local agents, contractors and property managers.2.