Union County, NJ Property Records: Search Deeds, Owners, Tax Records, and Maps

Property records in Union County are split between the county and the towns, so researching property can be a hassle. The Union County Clerk records and maintains deeds, mortgages, and liens. Each municipality has a tax assessor who is responsible for property valuation. The Union County Board of Taxation oversees the valuations made by the tax assessors. Each municipality's tax collector collects taxes and manages delinquencies. Jointly, these offices are responsible for over 149,000 parcels within the county.

Homes typically sell in Union County in 16 to 28 days, which is considerably lower than the New Jersey average. Housing styles are diverse, ranging from classic Colonial homes in Westfield and ranch homes in Cranford to more modern multi-family units in Rahway and Elizabeth.

Recent records reveal the underlying factors influencing the local real estate market, with a median home value of $406,550 and median rent of $1,704, alongside a median household income of $97,684.5 and a median real estate tax rate of 2.29 as a percentage of the property's assessed value.

How to Look Up Union County Property Records

You can answer property questions using three free resources. The Union County Public Land Records portal shows records of deeds, mortgages, and liens. The Union County Board of Taxation is responsible for assessed value, ownership details, and parcel details. The tax collector of each municipality handles details about the actual tax bill.

Who Keeps Union County Property Records

Union County property records are managed at both the county and municipal levels and are available to the general public under the Open Public Records Act. In Union County, these responsibilities are divided among several government agencies:

• The Union County Clerk records deeds, mortgages, liens, and lis pendens for all of the 53 municipalities. This office handles the chain of title; it does not conduct value assessments, tax billing, or legal counsel.

• Municipal tax assessors are responsible for determining the assessed value of each parcel. The state of New Jersey determines assessments at the municipal level (within towns), and not the county level, so questions about your assessment should go to the assessor for your municipality.

• The Union County Board of Taxation is responsible for the supervision of the municipal assessors, publication of the equalization ratios, maintenance of the countywide assessment search, and a hearing on most tax appeals.

• Municipal tax collectors issue and collect taxes, levy delinquencies, and conduct the annual tax sale. The town, not the county, handles collection.

How to Search Union County Property Records Online

A complete search usually means checking two or three sites in order. Here are steps to help with your search:

1. Start with the Union County Map. Enter the address or owner name to identify the parcel and copy its block and lot. This page also shows the assessed value and property class.
2. Take the owner name to the Union County Clerk’s Public Land Records. New Jersey indexes by name and by block and lot, so search from both the seller and buyer side to build a full chain of title.
3. The latest deed in a series is a good place to start establishing ownership. From there, work backward, verifying that the seller named in one deed is the buyer in the next. If there is a break in the chain, note it.
4. The same index usually includes mortgages, liens, and lis pendens. Also, check the Realty Transfer Fee stamp on the deed to find the last sale price.
5. Finally, contact your local tax collector to inquire about the property's tax status. Delinquent taxes on a property may sometimes be purchased at the town’s annual tax-sale auction in the form of a tax-sale certificate.

County Clerk: Deeds, Mortgages, and Liens

The Union County Clerk, as an elected official, provides recording services to all the municipalities within the county. Since New Jersey utilizes mortgages instead of deeds of trust, this is the security instrument that appears on financed purchases.

Document types recorded include:

• Deeds (including bargain-and-sale) and quitclaim deeds

• Mortgages, discharges, and assignments

• Construction liens, judgment liens, and state and federal tax liens

• Lis pendens, easements, and restrictive covenants

• Maps, plats, and trade-name recordings

The Clerk's office in Elizabeth has recorded land documents since 1857, when the county was created. Essex County holds land records from before 1857.

Assessors and the Board of Taxation: Ownership, Values, and Parcel Data

New Jersey has several valuation practices that can surprise many buyers, as they are not applied at the county level. The municipal assessor, not the County Board of Taxation, is responsible for the state's assessment process. However, the county board maintains and publishes equalization ratios and conducts a countywide search.

In New Jersey, assessed value is often lower than market value, and the equalization ratio allows the transition between the two. The ratio is crucial when appealing the assessment. Use the Union County Board of Taxation portal to find:

• The current owner of record for any parcel

• The block, lot, and property class

• Assessed value for land and improvements

• Prior sales and deed references

• The municipal tax rate and equalization ratio

For a valuation question or an assessment change, you have to contact the assessor in the town where the property is located, not the county assessor. Elizabeth, Union Township, and Plainfield have the county's largest assessing offices.

Tax Collectors: Taxes, Bills, and Payments

New Jersey imposes property taxes at the municipal level every quarter. Thus, due dates are typically February 1, May 1, August 1, and November 1, with a grace period established by the town (usually a few days). Additionally, the municipal tax collector, not the county, issues the bill.

If the bill is delinquent, the municipality can sell delinquent tax liens at the annual tax sale and issue a tax-sale certificate to the successful bidder. Contact the tax collector in the town where the property is located to clarify the details.

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Property Tax in Union County: Values, Exemptions, and Appeals

A Union County tax bill contains municipal, county, school, and open-space taxes in proportion to the value of the property. For the county, the tax is 1.6 percent of value on average, but it can differ greatly by municipality and school district.

Assessed Value and the Equalization Ratio

Since each town has its own schedule, a property's assessment can vary from year to year. The county board of taxation sets an equalization ratio each year that gives you the percentage of the property's sale price relative to its assessed value. A figure way below 100 percent would suggest that the assessed value was high compared to the actual sale price and would be used to argue your tax appeal.

Exemptions and Relief

Appealing Your Assessment

Most appeals are taken to the Union County Board of Taxation. You must do this by April 1, or by May 1 if the town has had a revaluation. You will need to bring evidence, such as comparable sales. If the assessed value is more than one million dollars or you aren't satisfied with the ruling from the Board of Taxation, you can appeal to the New Jersey Tax Court.

GIS Maps and Parcel Viewer

The Union County Taxation Board has a Maps Portal that links each parcel to its ownership and assessment record. For data that crosses county lines, the state runs the NJ Geographic Information Network.

Layers available include:

• Parcel boundaries with block and lot

• Municipal and school-district boundaries

• Aerial imagery on a regular update cycle

• Zoning and land-use information

• Wetlands, flood, and Highlands preservation layers

Tax Sales and Foreclosure

New Jersey handles delinquent taxes differently from most states, and two paths matter for property research.

Tax-Sale Certificates

New Jersey is a tax lien certificate state. Within each municipality, the annual tax sale is conducted at the county level under the Tax Sale Law, where delinquent tax payments are put up for sale, subject to bidders’ competition to lower the rate below the prevailing interest. Tax liens are sold at the auctions to the highest bidders. In contrast, the one who redeems the obligation to pay off taxes by the delinquent taxpayer is entitled to the penalty of 2, 4, or 6 percent, depending on the certificate’s value. A certificate from a private seller can be foreclosed by its assignee (the one who bought the lien) after two years; meanwhile, a municipality can start the in-rem foreclosure proceedings six months after the sale.

Mortgage Foreclosure

A mortgage foreclosure in New Jersey is a proceeding in the Superior Court and is a judicial sale, not a tax sale. This sale differs from the tax sale because the United States Supreme Court in 2023 ruled that the New Jersey tax-foreclosure law must be changed to protect the former owner’s surplus equity.

Costs to Access Property Records

Searching online is free. Fees apply when you need a copy or are recording a new document.

The Realty Transfer Fee is set by N.J.S.A. 46:15-7, and recording fees follow the state schedule. Confirm the current amounts with the County Clerk before filing.

How to Record a Document

New Jersey's recording law governs the form of any instrument that conveys an interest in real property. The four-step process:

1. Confirm the document meets New Jersey format rules: original signatures, a notary acknowledgment, a proper legal description with block and lot, and a recording cover sheet.
2. Calculate fees. A sale owes the Realty Transfer Fee, paid by the seller, plus recording fees. Sales over $1 million add the 1 percent buyer mansion fee. File the RTF-1 form with the deed.
3. Submit fees to the County Clerk by mail, or through an approved e-recording vendor. An SR-1A sales form is also filed so the state can update its ratios.
4. Once recorded, the original is returned to the filer, and the document posts to the online index within a short processing window.

FAQs

Quick Reference: Your Union County Property Records Checklist

Match each row to your task to find the fastest path through the system.

Key Contacts and Official Portals