You are losing money every day this crap goes on.A customer must have: 1) A detailed proposal 2) A detailed contract 3) A detailed payment schedule outlined in the contract 4) A written estimated schedule like a Gannt Chart 5) Change Orders every time there is something wanted by you or done by him that is not in the previous documents 6) Proof of payment to subs before final payment 7) Lien Releases

If you exceed the days of the lock the lender must extend the rate lock for a cost - in most cases cost to you unless its their fault and they might cover.Alwasy best to shop around first or during for a second review on costs.

There is no way $1.2mil over 3 houses  in vegas should only be cashflowing $3k, it should be $4,000+ in its sleep, which would extend all these numbers 30%, but again let’s assume worst case scenario.).

I have started listening to the bigger pockets daily podcast, along with the extended version one as well.

Does anyone know when the dates are typically released for each year?

The "mesh" system is key though, simple extenders will still result in connection issues and complaints.

It will extend the life to 20+ years.

How do you treat a potential tenant who none of his recent two years landlords are giving any info about him (I have called two latest landlords , they say either can't release due to confidentiality or we don't have the records )He has good credit score and no red flag in background check 

You might have to have the pipe extended to vent to the exterior of the building, away from the other vents.

You'd have to have the first lender agree to release the liens one by one.