A trust amendment form is a legal document you use to make changes to your revocable trust. It isn't meant to change your trust document as a whole.California Trust Amendment Form. Utilize our Trust Amendment form to implement modifications to a Revocable Living Trust. Edit, sign, and share deeds of trust online. No need to install software, just go to DocHub, and sign up instantly and for free. The simplest way to make a change to a living trust is with a trust amendment form. A living trust amendment allows you to make changes to an existing trust. First, you'll need to prepare and sign a new deed for the property. You'll usually need a grant form or quit claim form to transfer the deed.