There _ we got that out of the way! OK. Now let's look at when to use a Letter of Intent vs. a Purchase Offer. I am specifically going to address this when looking at buying an apartment building or commercial real estate. The standard contract used when purchasing real estate is called a Purchase Offer, or a Purchase and Sale Agreement. You probably used this to buy your own house or condo.
If the letter of intent is accepted, then the due diligence period will begin. It will continue until the time agreed upon by both parties in which, at the end of the term, a binding contract is constructed. Terms may change during this time if certain aspects of a property, previously not disclosed, are discovered.