Ownings homes with a Partner

[John Thi]

Dear Bigger Pockets.

I currently own three homes with a partner. Two homes are in Houston and one in Los Angeles. I hold the deeds as tenants in common in Los Angeles and Single Person in Houston. One house I own 60% and he owns 40%? How would I proceed with this?

Do I need a partner agreement and get it notarized? Do I need to go to a lawyer to create an agreement? How would this work?

Does anybody have this issue? or have a sample partners agreement, I can review.

Thanks.

John Thi