Union County Auditor Property Search (Ohio)

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Union County Ohio • Beacon, GIS, tax, deed and value lookup

Search Union County Parcel, Tax and Deed Records Without Opening the Wrong Office

Union County property search is easier when you start with the correct record type. Beacon is for parcel records, values, tax history, sketches, sales and tax estimates; GIS is for parcel maps; Recorder is for deeds; Treasurer is for payments.

This guide gives a practical lookup path, official links, local insider tips, due-date checks, appeal clues, and no-result fixes for homeowners, buyers, agents, investors and rural landowners.

Open Property Tools Open Beacon Search Start With Steps

Fast answer: open Union County’s official Property Search Tools, then use Beacon Property Search for owner, address, parcel ID, value, tax history, building sketches, sales, comparables and tax-estimator tools.

2026 tax check: Union County’s Treasurer lists first-half taxes due February 18, 2026 and second-half taxes due July 15, 2026. If you need payment status, penalties, lost bill help or delinquent payment details, use the Treasurer, not the Auditor.

Property tools Beacon help 2026 payment dates Recorder records

Use the Correct Union County Property Tool

Do not treat every property question as an Auditor question. The fastest answer depends on whether you need parcel data, tax payment, a recorded deed, survey documents, or a value appeal.

Need
Use
Click / do this
Official link
Owner, address, parcel, value, sketch, sales, tax history
Beacon Property Search
Search → select Parcel ID → open Report, Tax History, Map, Sales or Comparables.
Open Beacon
Boundary view, aerials, map layers, neighboring parcels
GIS Mapping
Use GIS for visual research, not final legal boundary proof.
Open GIS
Deed, mortgage, recorded legal document
Recorder Official Records
Search recorded documents if ownership or deed history matters.
Open Recorder search
Tax payment, due date, penalty, missing bill, delinquency
Union County Treasurer
Use Payment Information or Pay Taxes Online.
Open payment info
Survey records, subdivision plats, tax maps
Engineer / Property & Survey
Search survey documents and subdivision plats before relying on map lines.
Open survey tools
Challenge market value
Board of Revision
Gather comparable sales and property evidence before filing.
Open BOR page

Micro Step-by-Step: Search a Union County Parcel in Beacon

Start from the official county page

Go to Property Search Tools, then choose Beacon Property Search. This avoids outdated or third-party lookup pages.

Type the simplest search first

Use parcel ID if you have it. If not, use house number + street name, or owner last name only. Avoid punctuation, suffixes, apartment notes and extra words at first.

Select the Parcel ID

Beacon Help says results appear after search. Click the Parcel ID to open the detailed property record.

Open Report first

The Report screen is where you confirm owner, mailing address, property class, values, building details, sketches and printable property card information.

Then check Tax History

Use Tax History for tax-year/liability review. For actual payment, penalty or delinquency questions, move to the Treasurer.

Use Sales or Comparables for value questions

Before calling about a high value or filing BOR, look at nearby sales, appraised values, property condition, building data and school district/levy context.

What to Type in Beacon If You Search by Parcel, Address or Owner

🔢

Parcel ID

  • Best option for exact matching.
  • Copy from a tax bill, deed, GIS result or prior parcel card.
  • Use this number when calling Auditor, Treasurer or Recorder.
  • If land was split or combined, old parcel numbers may not work.
🏠

Address

  • Start with house number + street name only.
  • Remove Road, Street, Drive, Court and punctuation first.
  • For new subdivisions near Marysville or Dublin growth areas, try GIS if address search fails.
  • Try fewer words before assuming the property is missing.
👤

Owner name

  • Use last name only before full name.
  • For LLC/trust ownership, search one unique business word.
  • If the sale was recent, check Recorder records if Beacon still shows the old owner.
  • For estate ownership, try surname only and then parcel/address search.

Union County Insider Tips That Save Time

These are the practical checks that help real users, not just official links.

Old owner still showing?

Do not assume Beacon is wrong. A recorded deed and Auditor parcel display may not update at the same moment. Check Recorder Official Records first, then call the Auditor if the mismatch remains.

Tax bill looks higher than expected?

Check school district, levy changes, owner-occupied credit, Homestead status, CAUV status, special assessments and whether you are comparing tax year vs payable year correctly.

Buying land or a rural parcel?

GIS is helpful, but survey records, plats, legal descriptions and CAUV status matter more for boundary, acreage and use questions.

Appealing value?

Do not start with “my taxes are high.” Start with market evidence: comparable sales, property condition, incorrect square footage, wrong building data, or a recent sale.

New-build subdivision?

Use address, parcel ID and subdivision plat tools together. New streets and lots may be easier to verify by plat or GIS before they behave cleanly in name/address search.

Payment issue?

Call Treasurer at 937-645-3035. Call Auditor at 937-645-3003 for valuation, Homestead, rollbacks, CAUV, GIS mapping or special-assessment questions.

What the Union County Beacon Parcel Record Helps You Check

Record item
Why it matters
Best next step
Parcel ID
Cleanest identifier for Auditor, Treasurer, GIS, Recorder and BOR questions.
Copy it before calling any office.
Owner / mailing address
Shows taxable owner and where notices may be mailed.
If ownership looks old, search the Recorder deed records.
Appraised value
Value is the base for assessed value and tax calculation.
Use sales and building data before BOR.
Building sketch
Can reveal square footage, additions or structure-data issues.
Call Auditor if the property card has incorrect features.
Tax History
Helps view tax liability history after a parcel is selected.
Use Treasurer for payment status or delinquency help.
Sales and Comparables
Useful for buyers, agents, lenders and valuation evidence.
Export or save comparable evidence before contacting BOR.

Union County 2026 Property Tax Dates and Payment Help

1️⃣

First half due

February 18, 2026 is the last day to pay first-half taxes without penalty.

⚠️

First half penalties

5% penalty starts February 19, 2026. 10% penalty starts February 28, 2026.

2️⃣

Second half due

July 15, 2026 is the last day to pay second-half taxes without penalty.

📞

Treasurer help

Call 937-645-3035 or email treasurer@unioncountyohio.gov for payment questions.

Payable-year tip: Ohio property taxes can confuse new buyers because the tax year and payable year are not always the same in everyday wording. Match the year shown in Beacon/Treasurer records before comparing bills.
Payment information Pay real estate taxes Who answers what

Union County GIS: Use It for Maps, Not Legal Boundary Proof

🗺️

Use GIS for

Parcel boundaries, aerial photography, political boundaries, land context and neighboring-parcel research.

📐

Use survey tools for

Survey records, subdivision plats, lot splits, legal-description research and land-development questions.

🚫

Do not use GIS for

Fence disputes, final lot-line proof, easement opinions, title opinions or replacing a licensed surveyor.

Local land tip: For rural, farm, or development parcels, check GIS, survey records, subdivision plats and Recorder documents together. One map view rarely answers every legal land question.
GIS Mapping Property & Survey GIS Data Portal

Deeds, Survey Records and Subdivision Plats

Need
Use
How to search
Official link
Deed, mortgage or recorded legal document
Recorder Official Records
Search recorded documents when ownership, deed history or mortgage records matter.
Recorder search
Survey document
Engineer Survey Record
Use survey record tools for boundary and survey history questions.
Engineer records
Subdivision plat
Subdivision Plat Search
Use plat records for subdivision lots, lot lines and development history.
Property information
Older tax maps
Plat / Tax Map collections
Useful for historical map context and land research.
Plat / tax maps
Deed vs Auditor tip: A deed proves the recorded transfer; Beacon displays assessment/parcel data. When ownership timing matters, check both.

Transfers, Conveyance Fee and Parcel-Split Planning

💵

Conveyance fee

Union County lists the conveyance fee as $4 per thousand. Check Auditor/Engineer/Recorder requirements before submitting transfer documents.

📄

Auditor forms

Use official Auditor forms for conveyance-related, CAUV, owner-occupancy, Homestead and real-estate program documents.

🧭

Split/plat context

For land splits and new subdivisions, use Engineer survey/plat resources and Recorder documents, not just the Beacon display.

Transfer warning: If money, CAUV land, split acreage, exemption status or multiple parcels are involved, do not rely on a screenshot. Use official forms and contact the correct office.
Conveyance standards Auditor forms Survey and plats

Union County Board of Revision: Value Appeal Help

📊

Start with evidence

Use Beacon sales, comparables, photos, property-condition evidence, building sketch errors and recent appraisals before filing.

⚖️

BOR can change value

The Board of Revision may reduce, increase or make no change to a property value after review.

📞

Call before filing

The BOR page says the Auditor’s Office is available to discuss property owner concerns at 937-645-3003.

Appeal tip: “My tax bill is too high” is weaker than “my market value is unsupported because these comparable sales and property facts show a different value.”
Board of Revision Beacon sales/comps help

Homestead, Owner-Occupancy Rollback and CAUV

🏡

Owner Occupancy / 2½% rollback

Use the Homestead and Property Tax Rollbacks page for owner-occupancy credit information and forms. Call the Auditor for program questions.

Open rollback page
👵

Homestead

Senior citizens and permanently disabled owners may qualify, but income/means-test rules can apply. Check forms before assuming a credit is active.

Open Homestead page
🌾

CAUV

Qualified agricultural properties may be valued by production rates instead of market value. Union County lists either 10+ acres or minimum income requirements, a $25 application fee, and yearly renewal.

Open CAUV page
Credit-check trick: If you bought a home, inherited land, changed use, stopped farming, or moved into a property, check whether credits and CAUV status still match the new facts.

Official Valuation Video Resource

Union County has an official “Your Home, Your Value Video” page explaining the county home valuation process. A verified YouTube embed with safe upload-date and thumbnail metadata was not found, so this article links to the county’s official video page and does not add risky VideoObject schema.

Open official valuation video Real estate assessments

If Union County Property Search Shows No Result

Problem
Likely reason
Fix
Owner name fails
LLC, trust, estate, spelling, middle initial or recent transfer.
Use last name only, one business word, address or parcel ID.
Address fails
Street suffix, new development, rural address, punctuation or mailing/address mismatch.
Use house number + main street name, then try GIS or subdivision plat search.
Old owner appears
Recorder and Auditor records may update on different timelines.
Search Recorder records for the deed, then call Auditor if the parcel record still looks wrong.
Boundary looks wrong
GIS is visual reference, not legal survey proof.
Use survey records, plats, legal descriptions or a licensed surveyor.
Tax amount is confusing
Tax year/payable year, school district, credits, levies or special assessments may differ.
Check Beacon Tax History, Treasurer payment page and “Where to Get Answers.”

Union County Auditor Office Google Map

Use this map for in-person help at 233 West Sixth Street, 2nd Floor, Marysville, Ohio. Bring your parcel ID, address, tax bill, deed reference, screenshots and any value evidence.

Auditor visit

Use for parcel, value, appraisal, Homestead, rollback, CAUV, GIS and special-assessment questions.

Treasurer visit

Use for payment, due dates, lost tax bills, delinquent taxes, receipts and tax bill questions.

Recorder visit

Use for deed, mortgage, recorded-document and ownership-chain questions.

Union County Auditor Property Search FAQ

What is the official Union County property search tool?

Use Union County’s official Property Search Tools page and open Beacon Property Search. Beacon is the main tool for owner, address, parcel, appraisal, tax history, building sketch, sales and comparable information.

How do I search Union County property by owner name?

Open Beacon and try the owner’s last name first. For LLC, trust, estate or company ownership, use one unique business word or search by parcel/address instead.

Can I search by parcel number?

Yes. Parcel ID is usually the most accurate way to search. Use it from a tax bill, deed, GIS result or prior property card.

Where do I find Union County tax history?

Open a parcel in Beacon and review Tax History. For payment status, due dates, penalties, lost bills or delinquency questions, contact the Treasurer.

What are Union County 2026 property tax due dates?

The Treasurer lists first-half taxes due February 18, 2026 and second-half taxes due July 15, 2026, with 5% and 10% penalty dates after each deadline.

What is the Union County Auditor phone number?

The Union County Auditor phone number is 937-645-3003. Use it for valuation, parcel, Homestead, rollback, CAUV, special-assessment and Auditor-side property questions.

What is the Union County Treasurer phone number?

The Union County Treasurer phone number is 937-645-3035. Use it for property tax payment, due-date, missing bill and delinquency questions.

Where do I search Union County deeds?

Use Union County Recorder Official Records for deeds, mortgages and recorded legal documents. If ownership recently changed, check Recorder records as well as Beacon.

Is Union County GIS the same as a survey?

No. GIS is useful for parcel map research, aerial views and boundaries, but it does not replace a recorded survey, plat, legal description or licensed surveyor.

How do I challenge my Union County property value?

Use Beacon to review the property report, sales and comparable properties first. Then check the Union County Board of Revision page and contact the Auditor before filing.

Ohio Auditor Tools · Tax Year 2026

10 Ohio Property Tax Calculators & Auditor Tools

Built specifically for Ohio's 35% assessment ratio, current DTE forms, and 2026 Homestead, Owner-Occupancy, CAUV, Conveyance Fee, and Board of Revision rules. Every number reflects verified Ohio Department of Taxation amounts.

Homestead: $29,000 Enhanced Vet: $58,000 OAGI limit: $41,000 Assessment: 35% of market BOR filing: Free · DTE 1

Annual Tax Bill Estimator

OHIO

Applies Ohio's 35% assessment ratio plus your county's effective millage tier — the actual math your auditor uses.

Pick a county tier and enter your market value.

Homestead Reduction Calculator

DTE 105A

2026 Ohio Homestead: $29,000 general or $58,000 enhanced (100% disabled vet, KIA spouse). OAGI under $41,000 required for non-veteran applicants.

Pick your situation and enter your home value.

Owner-Occupancy & Non-Business Credits

DTE 105C

Every Ohio owner-occupied home qualifies for the 2.5% Owner-Occupancy Credit plus the automatic 10% Non-Business Credit. Most owners don't realize these stack.

Enter your annual tax to see both credit amounts.

Conveyance Fee Calculator

ORC 322

When you sell or transfer Ohio property, the auditor collects $1 state + up to $3 county per $1,000, plus $0.50 per parcel. Counties choose their rate.

Enter sale price and pick your county rate.

CAUV Agricultural Savings

DTE 109

Ohio's Current Agricultural Use Value cuts taxable value dramatically for farmland (10+ acres, or smaller with $2,500+ annual gross income).

Enter both market and CAUV values to see savings.

Mill Rate Converter

Ohio tax rates appear three ways on auditor sites: mills, percent, or dollars per $1,000. Convert between them instantly.

Enter a rate to see all three forms.

Parcel Number Cleaner

Ohio's 88 counties each format parcels differently — Franklin uses 010-123456-00, Cuyahoga uses 001-23-456, Hamilton uses 100-0001-0001-00. Auto-detects.

Paste any Ohio county parcel to format it.

35% Ratio Sanity Check

Ohio law sets taxable value at 35% of market value. If yours is significantly higher, you're a strong BOR appeal candidate.

Enter both values to compare against Ohio's 35% target.

BOR Appeal Savings

DTE 1

A successful Board of Revision complaint typically cuts your value 10–20%. Filing is free and stays in effect until the next reappraisal.

Enter your tax bill and reduction estimate.

BOR Deadline Countdown

MAR 31

Ohio's statutory Board of Revision filing deadline is March 31 for the prior tax year. Miss it and you wait until next year — no extensions.

Set your deadline to start the countdown.

Verify with the official Ohio source

These calculators use the verified 2026 Ohio Department of Taxation amounts and statutory rules. For your exact bill, exemption status, and county-specific deadlines, always confirm with your county auditor and the Ohio Revised Code:

Ohio Dept. of Taxation — Real Property DTE Forms (105A, 105C, 1, 109) ORC 5715 — Board of Revision ORC 5713 — Taxable Real Property ORC 322.02 — Conveyance Fee ORC 319.54(F)(3) — State Fee ORC 5713.30 — CAUV tax.ohio.gov — Main Portal

Estimates use Ohio's 35% statutory assessment ratio and effective tax rate tiers averaged across major Ohio counties. Your actual bill depends on local school levies, voted millage, inside vs. outside millage splits, House Bill 920 reduction factors (HB 920), and special assessments. The 2026 Homestead general amount ($29,000) and enhanced amount ($58,000) reflect HB 187 inflation indexing — your county auditor's office may show slightly different transitional figures. Nothing here is legal or tax advice. CountyAuditors.org is an independent informational directory, not affiliated with any county government.

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