Assessment Office


The Union County Assessment Office assesses real estate within the county for the local property tax levy. County government, 4 school districts and most of the 14 municipalities in the County levy a property tax. For most, the property tax is their principal source of revenue. The Assessment Office maintains a listing and valuation inventory of the nearly 17,238 parcels located within the border of the County for this purpose.

Mass appraisal for property tax purposes is guided by the concepts of market value and uniformity. Generally, the real estate market is the measure of an accurate assessment, according to the concept of market value. Uniformity requires that like properties be assessed similarly throughout the County. Union County completed a countywide Reassessment that became effective 1/1/2006. Assessed values are based on property market values as of 1/1/2006. The predetermined ratio is currently 100%.

To access the Union County Online Map, click here.

The Assessment office will not receive or collect any tax money or payment.

Appeals of Assessment

Union County is a 7th Class County (based on population) and the Assessment Office is administered under Pennsylvania 4th to 8th Class and General County assessment law. The Fourth to Eighth Class County Assessment Law requires the appointment of a three-member Board of Assessment Appeals for the purpose of overseeing Office administration and hearing assessment appeals. Appeals from assessment can be taken by property owners and taxing bodies alike, for the purpose of correcting over or under-assessed properties. Appeals may be undertaken any year when filed on or before September 1, with the result effective beginning with the subsequent tax year. In addition, an appeal may be filed within 40 days of any assessment change notice issued by this Office after a change has occurred to a property effectively changing its market value. This is different during a reassessment year; the owner has 40 days to file an appeal as of the day of the reassessment notice.

Contact Information

Union County Courthouse
103 South Second Street
Lewisburg, PA 17837

Phone: (570) 524-8611  (General office number & 24-hour voice mail)
Fax: 570-524-8619

Staff: Assessment Office