What type of mortgage pertains specifically to immovable property in the parish of the notary's commission?

The correct choice relates to a Property Bond, which specifically pertains to immovable property such as real estate or real property in the jurisdiction where the notary holds their commission. In Louisiana, immovable property refers to land and anything permanently attached to it, which can include buildings and other physical structures.

A Property Bond serves as a way to secure a debt or obligation with immovable property, and it is utilized within the legal framework of Louisiana's notarial practice. This type of bond highlights the connection between the property and the legal obligations tied to it, ensuring that the mortgage is enforceable against the property in question.

Other choices like Surety Bond and Chattel Mortgage involve different applications or properties. A Surety Bond is a promise made by one party to assume the debt obligation if another party defaults, and it typically does not apply directly to real estate transactions. Chattel Mortgage, on the other hand, refers specifically to movable property, not immovable property, which means it would not apply in this context of real estate. Therefore, Property Bond is the appropriate term for mortgages related to immovable property in Louisiana.