I'm supposed to exercise too, but I tend to leave that one out.

Would be an easy exercise.

Aloha,Here is a great source for sample Commercial leases of all kinds:https://www.aircre.com/air-cre...However, since you are leasing to yourself, it may be simplest to use a local attorney to draft your document.

He showed me samples and it looked gloriously hardy!

When the tenant exercises the option to purchase, you do the same with the owner and then double close. 

But, without being clear on motivations and if there is a potential deal here, walking the properties may just be exercise. 

In Phila, you need the certification to come from a certified lead dust sampling technician. 

I brought a paint sample to home depot to match and purchased a sample.

This is all considering no vacancy or capital expenses....but I just want to leave those out for this exercise.

If Partner B exercises their clause to buy, then they would have to give partner A the $600k for 100% ownership.