N.J. Ct. R. 4:60-7

The sheriff shall make the levy within 30 days from the date of the writ, in the following manner:

(a) In the case of tangible personal property in the possession of a bailee for which a negotiable document of title is outstanding, by complying with the provisions of N.J.S. 12A:7-602, and serving a certified copy of the writ upon the bailee.

(b) In the case of tangible personal property other than personal property referred to in paragraph (a) of this rule, by taking the same into custody or by serving a certified copy of the writ upon the person holding the same.

(c) In the case of choses in action evidenced by negotiable commercial paper, by taking the said paper into custody, or by serving a certified copy of the writ upon the person owing the same and also serving upon the person in possession of said paper an order of the court enjoining its negotiation.

(d) In the case of negotiable investment securities, by complying with the provisions of N.J.S. 12A:8-317.

(e) In the case of choses in action not referred to in paragraphs (c) or (d) of this rule, by serving a certified copy of the writ upon the person owing the same.

(f) In the case of legacies or distributive shares in an estate of a decedent or a beneficial interest in a trust, by serving a certified copy of the writ upon the fiduciary.

(g) In the case of real property, by endorsing upon the writ a description of the property, and by serving a certified copy of the writ upon any person in possession of the same, provided, however, that failure to complete a levy as herein provided shall not defeat the lien of the writ as provided in N.J.S. 2A:26-9.

(h) The copy of the writ to be served pursuant to the preceding paragraphs of this rule, shall be certified to be a true copy by the Clerk of the Superior Court, a deputy clerk of the Superior Court or by an attorney.