I offered not to raise a rent and if they extend, they could cancel any time to buy their house.

They extended one loan a couple times and even gave me some more money. 

If extending for a longer term I would simply write the longer term, particularly if you are adding different terms.

We've had to keep extending closing for weeks because his communication is almost non-existent.

It all comes down to Costs... but keep in mind that a full roof replacement, should give you a new Warranty on it, and extended lifetime and lower insurance costs too!

A place my extended family could come and visit me at and be comfortable sitting in the room.

Unfortunately my work is not scalable and does not allow me to extend such opportunities.

@Jason Merchey For more details, check out title 37, chapter 22 of the SC State law: http://www.scstatehouse.gov/code/t37c022.php (emphasis added):(30) "Mortgage loan" means a loan made to a natural person primarily for personal, family, or household use, primarily secured by a mortgage, deed of trust, or other security interest on residential real property or security interest arising under an installment sales contract or equivalent security interest against the borrower's dwelling and: (i) located in South Carolina, (ii) negotiated, offered, or otherwise transacted within this State, in whole or in part, or (iii) made or extended within this State.By definition, you didn't "make a mortgage loan" in the context of the legislation.

This post is for a friend who came to me seeking advice and I thought I could extend to this amazing community . 

Having the insurance coverage extends to both parties, creates a unified defense with one insurance company defending both parties.