I have been renting a house I own in Fayettville North Carolina to my brother for 2 years, he wants me to sign a life lease agreement in case something happens to me.
Why would a "life lease" be of any value to you?
If you are a landlord wishing to maximize his/her finances, it wouldn't.
The one you should worry about protecting is yourself, and your assets.
Let's say your brother died, how does a life lease help you?
Let's say your brother contracted a dreaded disease which required him to be confined to a nursing home, how does a life estate help you?
What if your brother committed a crime, got arrested, held in jail on a $500,000 bail, got acquitted after two years, how does his LIFE ESTATE benefit you?
You're either a landlord, or a benefactor.
One last thought for you to ponder.
What your brother calls a "life lease", is what the law terms a "life estate".
Here, this will help:
Life Lease Law and Legal Definition | USLegal, Inc.
Let's say your property is valued at $500,000.
Wal-Mart, the city, the state, or the federal government comes along and offers you $2,500,000 to buy your property.
Who will demand YOU to give them HALF of your windfall to buy out that "life lease"?
Does that help you understand why a "life ANYTHING" isn't in your best interests.
I used to own many rental properties.
I gave some away to relatives, and sold off most of the rest.
I retain a few to round out my portfolio, which also give me access to liquidity should I ever need it.
Financially you'd be better off "GIFTING" or "SELLING" the property to your brother, mate.