New Jersey Statutes Title 54. Taxation 54 § 1-30

The Director of the Division of Taxation shall, once in every 5 years beginning with the calendar year 1933, investigate in each county assessments made against any property, including the property of railroad and canal companies, for the purpose of securing a uniform taxable valuation of all such property within each county for the purpose of taxation. The investigation shall be conducted in the manner provided in sections 54:1-26 to 54:1-29 of this Title. The director may, after due investigation, order or make a reassessment of any property undervalued, or a reassessment of all property in the county.