Search Union County Property Records by Parcel, Owner, Address, Map or Official Document
Union County, Ohio property research starts with the Auditor, but the right tool depends on your task: parcel value, owner lookup, tax history, GIS map, survey record, subdivision plat, deed image, tax payment, CAUV, Homestead, or Board of Revision complaint.
This guide puts the most useful official details directly in the article, then sends you to official portals only when you need to search, pay, map, download, file, or verify a live record.
Fast Answer: Which Union County Property Tool Should You Use?
Use Beacon / Parcel Search for real estate appraisal information, GIS/mapping, property tax information, building sketches, tax levy information, tax history, general land information, sales search, comp search, reports, and exportable search results.
Use the Recorder Official Records search for legal documents such as deeds, mortgages, conveyances, images and indexes. Use M.A.P.S. / GIS for parcel boundaries, aerial photography, political boundaries and map layers. Use the Treasurer for tax due dates, penalties, escrow, online payments and delinquent-tax questions.
Official Union County Ohio Property Search Facts
Which Union County Office Handles Your Search?
The fastest path is choosing the correct official source before searching. The Auditor is the property valuation and parcel-information starting point, but legal documents and tax-payment records live in different places.
How to Use Union County Beacon / Parcel Search
Union County points users to Beacon for parcel search. It can show real estate/appraisal information, GIS/mapping, tax information, building sketches, tax levy details and general land information.
Open the official Property Search Tools page
Start from the Union County property tools page, then open Parcel Search or GIS Map.
Open official Property Search ToolsSearch with the cleanest identifier
Use parcel number if you have it. If not, try owner last name, house number plus street name, or map search.
Open Beacon Parcel SearchOpen the result and check the Report screen
The Beacon help page says the Report screen shows property details for a selected parcel and has expandable detail sections. A printable property record card is available near the bottom.
Use the Tax menu after selecting a parcel
Beacon’s Tax menu appears after a parcel is selected and can include Tax Estimator, Tax Distribution and Proposed Levy information.
Verify deeds and legal title separately
Use Recorder Official Records for deeds, mortgages and official document images. A parcel card is not a complete title search.
Beacon Tools: Layers, Results, Reports, Tax Estimator and TIF Parcels
Layers
The Layers menu can show property map layers and quick links to the Property Search screen. Some layers may not appear until you zoom in from a countywide view.
Search results to map
If you searched first, resulting parcels can be highlighted and summarized in the map application.
Exportable results
The Results screen can show property, sales search and comp search results. Results are exportable in Excel-compatible format.
Printable report
The parcel Report screen contains expandable detail sections and offers a printable property record card near the bottom.
Tax estimator
When estimating taxes, select Owner Occupied, Homestead Credit or Disabled Veterans Homestead Credit if you qualify.
TIF parcel note
If a parcel is a TIF parcel, a portion of the property record details may be split between two parcel records because of the TIF designation.
GIS Mapping and Downloadable Data
The Auditor oversees and coordinates the County GIS mapping program. The GIS page says orthophotos are overlaid on a master map and can show buildings, land characteristics, land uses, property lines, soil types, hydrography and many other county details.
M.A.P.S. GIS tool
M.A.P.S. lets users view parcel map information, parcel boundaries, aerial photography and political boundaries.
Open GIS Mapping pageGIS data downloads
Union County GIS data is available in shapefile format. Aerial photography is in MrSID format, and geographic locations are in Ohio State Plane North Zone coordinates measured in feet.
Open GIS Data pageGIS questions
Union County directs map or GIS-related questions to maps@unioncountyohio.gov.
Recorder Official Records: Deeds, Mortgages, Plats and Fraud Alerts
The Recorder is the office for official recorded land documents. Union County says the Recorder’s primary responsibility is recording deeds, mortgages and conveyances of lands and buildings, plus maps and plats of newly laid out villages.
Online images and indexes
Recorder page says images and indexes are online from 1995 to current, with recently added deed indexes from 1875–1994, mortgage grantor indexes from 1944–1994 and miscellaneous indexes from 1960–1994.
Open Recorder pageeRecording
As of July 15, 2024, Union County accepts eRecorded non-conveyance filings.
Real estate fraud alert
Union County offers a free Real Estate Fraud Alert Service to notify residents of potential real estate fraud activity.
Find fraud alert signupUnion County Recorder Fees Searchers Commonly Need
Recorder fees can change, especially after statutory updates. These official fee examples help users prepare before submitting documents.
Most recorded documents
Deeds, mortgages, affidavits, agreements, annexations, easements, certificates of transfer, land contracts, leases, mechanic’s liens, partnerships, trust documents, powers of attorney and bankruptcy filings are listed at $39 for the first two pages and $8 each additional page.
Marginal references
Marginal notations or references by separate instrument are listed at $4 each reference, plus the document recording fee.
Plats and condominium drawings
The fee schedule lists $0.10 per square inch; required size is 18″ x 24″, totaling $43.20 per page.
Veterans records
Veterans’ military service discharges, military powers of attorney and one certified copy of a veteran’s military service discharge are listed at no fee.
Mail conveyance warning
The Recorder accepts conveyances by mail only if the Union County Auditor’s conveyance stamp is affixed before the document arrives at the Recorder’s office.
Recording fee update
The Recorder page notes increased recording fees starting January 1, 2025 due to legislative action.
Treasurer Taxes, Online Payment and Escrow Programs
The Treasurer handles payment, due dates, penalty dates, escrow programs, delinquent payment contracts and online payment details.
2026 real estate tax due dates
Payment Information lists first half due February 18, 2026 and second half due August 12, 2026.
Open payment informationOnline payment
Union County Treasurer accepts online real estate tax bill payments through Autoagent, subject to convenience fees.
Pay taxes onlineAutomated phone payment
Treasurer FAQ lists automated phone payment at 877-814-8230.
Mail payments
Mailing address is 233 West 6th Street, Marysville, OH 43040. Closing-date postmarks are accepted, but taxpayer is responsible for an acceptable postmark.
Escrow program
Monthly escrow options are available through the Real Estate Tax Escrow Program. Contact the Treasurer to discuss options.
Missing tax bill
Failure to receive a bill does not excuse late payment. The Treasurer FAQ says tax bills are mailed in January and June and address changes should be provided in writing.
2026 Penalty and Interest Dates for Union County Property Taxes
Feb. 18, 2026
Last day to pay first half taxes without penalty.
Feb. 19, 2026
5% of unpaid first half taxes added as penalty.
Feb. 28, 2026
10% of unpaid first half taxes added as penalty.
Aug. 12, 2026
Last day to pay second half taxes without penalty.
Aug. 13, 2026
5% of total unpaid 2025 tax added as penalty.
Aug. 22, 2026
10% of total unpaid 2025 tax bill added as penalty.
Sep. 1, 2026
4.67% of unpaid prior-years delinquency added as interest.
Dec. 1, 2026
2.33% of total unpaid balance added as interest.
Real Estate Assessments, Reappraisal and Value Updates
Property record count
Union County maintains approximately 32,800 property records.
Six-year reappraisal
Ohio law requires a full reappraisal every six years. The last reappraisal listed by Union County occurred in 2019.
Three-year update
Ohio law also requires a value update every three years.
How Union County Ohio Property Taxes Are Calculated
The Treasurer FAQ gives a practical formula searchers need when they ask why their bill changed.
Auditor establishes market value
The Auditor establishes a market value for property in Union County.
Assessed value equals 35% of market value
Full-year tax starts with assessed value, which is 35% of the market value.
Tax rate and reduction factor are applied
The assessed value is multiplied by the total district tax rate, then adjusted by district reduction factors.
Credits and special assessments change final balance
Residential/agricultural credits, owner occupied credit, homestead, special assessments and other adjustments determine the balance owed.
Board of Revision: When You Disagree With Value
Use the Board of Revision for value complaints, not for general dislike of taxes, school levies or payment penalties.
Filing window
Auditor FAQ says a complaint for the current tax year must be received after January 1 and on or before March 31 of the following tax year.
Current year only
BOR decisions are only made for the current tax year; there is no look-back for earlier years.
Board membership
The Board of Revision includes the County Auditor, County Treasurer and President of the Board of Commissioners, or their representatives.
Evidence to prepare
Bring recent appraisals, comparable sales data, photos, condition issues and sale information that supports your requested value.
Auditor help
Call 937-645-3003 and select the Real Estate option if you have valuation concerns before filing.
Recent sale warning
The BOR page warns that if the Auditor’s value is lower than a valid recent sale price, the Board may value the property according to that sale.
CAUV and Agricultural District: Farm Property Search Notes
Who administers CAUV?
The County Auditor administers CAUV and the Agricultural District Program.
Qualification basics
Union County states qualified agricultural producing property is either 10 acres or more, or has a minimum income of $2,500 per year.
Fee and renewal
CAUV requires a one-time $25 application fee and yearly renewal.
Homestead Exemption, Owner Occupancy and Rollbacks
10% rollback
Union County explains that residential and agricultural property owners receive a 10% rollback for levies passed before November 2013.
2.5% owner occupied credit
The owner-occupied credit applies to residential property tax calculations and requires an application.
Homestead exemption
Senior citizens and permanently disabled property owners may qualify, subject to the income/means test rules in effect.
Manufactured Homes: Auditor Search and Tax Notes
Manufactured homes have their own registration and tax process, but the Auditor is still the starting office.
Owner responsibility
Under Ohio law, owners of manufactured homes are responsible for registering homes with the County Auditor for tax purposes.
Appraisal schedule
The Auditor assesses manufactured homes using the same six-year appraisal schedule as real property and prepares a tax duplicate.
Semiannual bills
Tax bills are sent semi-annually to the owner and distributed back to local taxing districts such as townships and schools.
Union County Auditor, Treasurer and Recorder Office Map
The Auditor and Treasurer list 233 West 6th Street, 2nd Floor, Marysville, OH 43040. The Recorder also lists 233 West Sixth Street, Marysville, OH 43040, with hours of 7:30 a.m. to 4:00 p.m.
Bring for Auditor help
Parcel number, address, owner name, tax bill, value notice, CAUV/Homestead forms, photos or comparable sales.
Bring for Treasurer help
Tax bill, parcel number, payment method, mailing proof, escrow/lender details or delinquent-contract questions.
Bring for Recorder help
Document, recording fee, Auditor conveyance stamp when required, legal description, return information and copy/certification request details.
Official Union County Ohio Property Search Links
The article above includes the practical details so users do not need to bounce from page to page. Use these official links mainly to search, map, pay, file, download, record or verify live information.
Union County Ohio Auditor Property Search FAQ
Where do I search Union County Ohio property records?
Start with the Union County Auditor Property Search Tools page. It links to Beacon Parcel Search, GIS mapping, property tax information, survey records and subdivision plats.
Who is the Union County Ohio Auditor?
The official Auditor page identifies Andrea L. Weaver as Union County Auditor.
What is the Union County Auditor phone number?
The Auditor phone number is 937-645-3003. The office is at 233 West 6th Street, 2nd Floor, Marysville, OH 43040.
What are the Union County Auditor office hours?
The Auditor office lists hours as 8:30 a.m. to 4 p.m. It also notes the office is closed from 8:30 a.m. to 10:00 a.m. on the third Tuesday of each month for a department meeting.
What can I find in Union County Beacon Parcel Search?
Beacon can show real estate and appraisal information, GIS/mapping, property tax information, building sketches, tax levy information, general land information, search results, parcel reports and tax tools.
Why do some Beacon map layers not appear?
The Beacon help page says some layers may not be visible when zoomed out to a countywide view. Zoom in to a larger scale to see selected layers.
Can I export Union County Beacon search results?
Yes. The Beacon help page says the Results screen is exportable in Excel-compatible format and that users can enable or disable fields before exporting.
What is a Union County TIF parcel note?
The Beacon help page says if a selected parcel is a TIF parcel, some property record details may be split between two parcel records due to the TIF designation.
Where do I search Union County Ohio deeds?
Use the Union County Recorder Official Records search for deeds, mortgages, conveyances and other recorded land documents.
How far back are Union County Recorder online records?
The Recorder page says images and indexes are online from 1995 to current, with added older deed, mortgage and miscellaneous indexes covering earlier periods.
How much does the Union County Recorder charge for most recorded documents?
The fee schedule lists many common documents at $39 for the first two pages and $8 for each additional page.
What are Union County 2026 property tax due dates?
The Treasurer Payment Information page lists first half due February 18, 2026 and second half due August 12, 2026.
Can I pay Union County property taxes online?
Yes. Union County Treasurer accepts online real estate tax payments through the authorized Autoagent payment path, subject to convenience fees.
What if I did not receive my Union County tax bill?
The Treasurer FAQ says failure to receive a bill does not excuse failure or delay in payment. Tax bills are mailed in January and June, and address changes should be provided in writing.
How is Union County property tax calculated?
The Auditor establishes market value. Assessed value is 35% of market value, then tax rate, reduction factors, credits and special assessments are applied to determine the final amount due.
When can I file a Board of Revision complaint?
A complaint for the current tax year must be received by the county auditor after January 1 and on or before March 31 of the following tax year.
Who qualifies for Union County CAUV?
Union County says qualifying agricultural producing properties are either 10 acres or more, or have a minimum income of $2,500 per year. A one-time $25 application fee and yearly renewal are required.
What is the Homestead Exemption in Union County Ohio?
Homestead is a property tax reduction for qualifying senior citizens and permanently disabled homeowners, subject to income/means test rules.
Are manufactured homes handled by the Auditor?
Yes. Owners must register manufactured homes with the County Auditor for tax purposes. The Auditor assesses them on the same six-year appraisal schedule as real property.
Can GIS maps replace a legal survey?
No. GIS mapping is helpful for research, parcel context and aerial imagery, but it should not be treated as a legal survey, title opinion or boundary determination.
Khushboo Bobade is the editor and digital publisher of CountyAuditors.org. She oversees the research and editorial process for the website, ensuring that information about county auditor offices, property records, and government resources is accurate, verified, and easy for visitors to understand.
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.
Annual Tax Bill Estimator
OHIOApplies Ohio's 35% assessment ratio plus your county's effective millage tier — the actual math your auditor uses.
Homestead Reduction Calculator
DTE 105A2026 Ohio Homestead: $29,000 general or $58,000 enhanced (100% disabled vet, KIA spouse). OAGI under $41,000 required for non-veteran applicants.
Owner-Occupancy & Non-Business Credits
DTE 105CEvery 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.
Conveyance Fee Calculator
ORC 322When 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.
CAUV Agricultural Savings
DTE 109Ohio's Current Agricultural Use Value cuts taxable value dramatically for farmland (10+ acres, or smaller with $2,500+ annual gross income).
Mill Rate Converter
Ohio tax rates appear three ways on auditor sites: mills, percent, or dollars per $1,000. Convert between them instantly.
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.
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.
BOR Appeal Savings
DTE 1A successful Board of Revision complaint typically cuts your value 10–20%. Filing is free and stays in effect until the next reappraisal.
BOR Deadline Countdown
MAR 31Ohio'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.
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:
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.