During a boom like now , sellers like to sell to lock the profit , so more listings at higher price and more inventory for buyers. 

Turns out they had lost 4 houses and our good faith gesture of locking it up quick has made a smooth transaction for my clients and them. 

The rehab is finished on the main home and I am looking to refinance ASAP to reduce my debt service and lock in a fixed rate (current one is variable).

The other 80% he is getting payments on amortized of 30 years @ 5.5% interest locked in for 15 years.

I will let them, nothing wrong with it as long you approve where it is installed and they pay for everything from the device to annual fees.

Is there a time limit in which I no longer have to list the property as my primary residence or am Im locked in for the life of the loan. 

If I were a renter, I'd want to know if the locks had been changed or rekeyed prior to moving in.I would ask the property manager how they handle pests, rodents and bed bugs just to see if they replied with stories of recent experiences. 

It sounds as though the entire value of the 2nd office building is in the fact that you have a tenant lined up....so locking them into a lease would be the primary constraint.That being said, why don't they lease from the office building you already own...

It always does change and (b.) the amount of debt we carry as a nation will need to be paid and the likely place to get the money is the huge amount of money in 401(k)s and IRA's that is "locked in".

I’m just not sure if there’s room for profit after repair even if I were to lock it down for only 4K.