Miami County Auditor Property Search, Records & Maps 2026

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Miami County, Ohio · Parcel, value, tax and map guide

Miami County Property Lookup: Search Owners, Parcels, Records and Maps

The Miami County Auditor property system can locate a parcel by owner name, street address or parcel number and display valuation, legal, land, building, sale, tax, exemption and mapping information.

This guide explains the record inside the page, including current 2026 tax deadlines, the 2025 reappraisal, Board of Revision evidence, Homestead, CAUV, damaged-property relief and deed-transfer steps.

Search official property records Open official parcel map Call 937-440-5925
Current 2026 tax notice — reviewed July 23, 2026: Miami County extended the second-half real-property tax due date to August 20, 2026. The second-half manufactured-home deadline is August 31, 2026. Confirm the live amount and posting status before paying.
Main phone

937-440-5925

Office

201 W Main St.
Troy, OH 45373

Office hours

Monday-Friday
8 a.m.-4 p.m.

Parcel count

About 54,700 county parcels.

Search options

Owner, address, parcel, sales and advanced filters.

Official Miami County Auditor property search with owner, address, parcel and advanced search options
The official Miami County Auditor search provides owner, address and parcel lookup, advanced property filters, sales information, valuation records and map access.
Quick answer

What do you need from the Miami County Auditor?

1
Find a parcel or owner

Use the official search by address, owner name or parcel number.

2
Check taxes or payment

Find the parcel through the Auditor, then use the Treasurer for the live bill and payment.

3
Review value or map

Check appraisal details, property characteristics, valid sales and the parcel map before contacting the county.

Best search habit: Copy the parcel number after finding the property. Use that same identifier for taxes, maps, forms, Board of Revision research and deed records.

Choose the property task you need to complete

This article explains each process before linking to the official live-action page.

Avoid the wrong office

Auditor, Treasurer, Recorder or Board of Revision?

Which Miami County office handles each property task?
What you need Correct office Prepare first
Owner, address, parcel, value or building information Miami County Auditor Address, owner name or parcel number.
Tax bill, due date, payment, penalty or delinquency contract Miami County Treasurer Parcel number, tax year and payment record.
Deed, mortgage, lien, release, easement or recorded image Miami County Recorder Owner name, book/page, instrument number or date.
Formal complaint about appraised market value Miami County Board of Revision DTE 1, requested value and evidence.
Exact boundary, fence or encroachment determination Licensed surveyor, title professional or attorney Deed, plat, legal description and survey records.
Value and tax are different: The Auditor determines parcel values and maintains the property record. The Treasurer bills and collects taxes. A change in market value does not always produce an identical percentage change in the final bill.

How to read a Miami County Auditor parcel record

Important property fields and what they mean
Record field Meaning What to check
Parcel number The county identifier for the tax parcel. Use it across Auditor, Treasurer, map and form systems.
Owner The ownership name currently carried by the Auditor. Compare with the latest recorded deed after a recent transfer.
Property address The physical location associated with the parcel. Do not confuse it with the tax-mailing address.
Legal description The recorded description identifying the land. Use the deed, plat and survey for legal boundary decisions.
Appraised value The Auditor’s estimate of full market value. Review land and improvements separately.
Assessed value Ohio generally taxes real property using 35% of appraised value. This is not the same as the final amount of tax due.
Residential characteristics May include year built, style, area, rooms, baths, basement and condition. Identify factual errors before a value-review deadline.
Additions and improvements Garages, decks, sheds and other structures may be listed separately. Confirm removed or damaged structures are not still carried incorrectly.
Sales history Buyer, seller, date, deed type, parcel count, price and validity. A quitclaim, family, sheriff or exempt deed may not show market value.
Tax section May display annual tax, half-year amounts, credits, assessments and payments. Use the Treasurer for the live payable balance.
Homestead or owner occupied Shows whether a tax-reduction status is connected with the parcel. Verify an approved reduction appears after processing.
Photograph, sketch and map Visual property and parcel references. They help research but do not replace an inspection or legal survey.
Save a property record card: The parcel page may provide a printable single-page record with ownership, values, taxes, sales, land and building information. Save a dated copy before filing a correction or complaint.
Maps and parcel location

Miami County Auditor map, GIS and boundary research

The official map is useful when an address is incomplete, several parcels share a location, land has an unusual shape or neighboring parcels need to be compared.

Open the Auditor parcel map Search for the address or parcel number, or navigate visually to the general area.
Select the parcel shape Match the parcel number, site address and legal description with the property-search record.
Review surrounding parcels Check adjoining ownership, road frontage, parcel splits and nearby valid sales when relevant.
Compare with aerial context Aerial imagery can help identify buildings, access points and general physical context.
Use legal records for final decisions A map line does not establish a fence line, easement, ownership interest or exact acreage.
Good map use

Find parcels, compare nearby land, understand general shape and connect a map location with a parcel record.

Not a legal survey

Use a licensed surveyor and recorded instruments for boundary, access or encroachment disputes.

Flood research

The Auditor homepage also links to current FEMA flood maps for broader hazard research.

Open official parcel map Open Auditor GIS information
Current value context

Miami County 2025 reappraisal and 2026 property-tax records

Miami County completed its countywide real-property reappraisal for tax year 2025. The current Auditor record and the 2025 tax estimator provide the value and tax-year context used for taxes payable during 2026.

What a reappraisal does

Reviews property data and market evidence to estimate what property would sell for on the open market.

What to check

Land value, improvements, square footage, year built, condition, class, acreage and recent sales.

What it does not decide

The appraisal does not independently set every levy, special assessment, credit or tax-payment deadline.

Why your bill may not change by the same percentage as value

Ohio applies a 35% assessed-value percentage.
Effective rates differ by tax district.
Voted and unvoted levies work differently.
Credits and reductions can change taxable amounts.
Special assessments can appear separately.
The 2026 inflation-cap credit may affect eligible parcels.

Factual error versus value disagreement

Factual record error

Examples include wrong square footage, incorrect acreage, a demolished building, incorrect property class or outdated ownership. Contact the relevant Auditor department with proof.

Market-value disagreement

The physical record may be correct, but recent sales, condition or appraisal evidence may support a different market value. Prepare evidence for review or Board of Revision.

Open county-linked 2025 reappraisal report Use official 2025 tax estimator
Tax bill and payment

Miami County property-tax due dates, payment methods, fees and penalties

Special 2026 schedule: The normal second-half real-estate date was extended to August 20, 2026 because of implementation work connected with state inflation-cap credits. Manufactured-home second-half tax is due August 31, 2026.
Find and verify the parcel Use the Auditor search and copy the parcel number before entering a payment system.
Open the Treasurer payment instructions Review the current due date, methods, service fees, mailing rules and temporary notices.
Confirm the tax year and half Ohio taxes are collected in arrears. Check whether the amount is first half, second half, delinquent or a special assessment.
Review the payment fee The official payment page lists a 2.50% convenience fee for card payments and a $1.99 flat fee for eChecks.
Save payment proof Keep the parcel number, amount, payment date, confirmation number and method until the payment posts.
Do not rely on missing mail The Treasurer states that failure to receive a bill does not remove the taxpayer’s obligation or statutory penalties.
Miami County property-tax payment options
Method Official instructions Important check
Mail Send the bill stub and check payable to Jim Stubbs, Treasurer. Use a U.S. Postal Service postmark by the due date; private-meter dates do not control.
In person Treasurer, 201 W Main Street, First Floor, Troy; Monday-Friday, 8 a.m.-4 p.m. Complete payment by the collection deadline.
Night deposit A night deposit box is located on the east side of the Safety Building. Do not deposit cash and identify the parcel clearly.
Card Online card payments are available through the county-linked provider. The posted convenience fee is 2.50% of the transaction.
eCheck Electronic-check payment is available online. The posted eCheck fee is $1.99.
Delinquency contract The Treasurer states that delinquent payment contracts may be available. Call the office for eligibility, terms and current collection status.

Late-payment penalty guidance

First ten days after due date

The Treasurer FAQ describes a 5% penalty during the first ten days after the deadline.

After the first ten days

The Treasurer FAQ describes a 10% penalty on unpaid current tax after that initial period.

Treasurer: 937-440-6045 · 201 W Main Street, First Floor, Troy, OH 45373 · Monday-Friday, 8 a.m.-4 p.m.
Open official payment and bill instructions Check current Treasurer notice
Formal value complaint

Miami County Board of Revision filing and evidence guide

A Board of Revision complaint addresses the property’s full market value, not simply the number of tax dollars charged. Miami County directs taxpayers to file DTE Form 1 between January 1 and March 31.

Current timing: The regular 2026 filing period has passed. Prepare the property record and evidence early for the next eligible filing period, unless the Auditor confirms another statutory route applies.

DTE Form 1 completion checklist

Use the current tax year.
Identify original or counter-complaint.
Enter deeded owner and mailing address.
List every parcel number and physical address.
State the property’s principal use.
Enter your opinion of full market value.
Enter the current full appraised value.
State the requested value change.
Explain the factual and market basis.
Answer sale, listing and improvement questions.
Sign through an authorized person.
Complete notarization when required.

Evidence the Board may request or consider

Evidence identified in official complaint instructions
Evidence What it helps establish What to include
Recent sale Market price for the subject property. Purchase agreement, escrow or closing statement and explanation of related-party interests.
Professional appraisal Opinion of market value as of a specific date. Complete report, assumptions, comparable sales and appraiser credentials.
Comparable sales Market evidence from similar properties. Sale date, price, parcel, location, size, age, condition and adjustments.
Condition photographs Physical problems not apparent in county data. Dated exterior and interior images that identify the property.
Construction or repair costs Cost and scope of improvements or serious defects. Contracts, invoices, certified estimates and completion dates.
Income property records Economic performance of commercial or rental property. Leases, rent rolls and detailed income and expense statements.

Hearing and evidence rules users often miss

Information becomes a public record Material submitted with a complaint becomes part of the permanent public case record.
Notice is sent before hearing The county instructions state that parties receive at least ten days’ notice of the hearing.
Submit supplemental evidence early Miami County’s instructions request supporting supplemental information at least seven days before the hearing.
The Board can increase or decrease value Filing a complaint does not limit the Board to only reducing the parcel value.
Present all known evidence Evidence withheld from the Board may be restricted in a later appeal unless good cause is shown.
Multiple parcels: Parcels generally need identical ownership and the same taxing district to be included in one complaint. Separate complaints may be required when those conditions do not match.
Board of Revision: 937-440-5928
Open official Board of Revision guidance Open current complaint forms
Useful BOR call script “I am reviewing parcel [parcel number] for tax year [year]. The current full appraised value is [amount], and I believe the supported value is [amount] because of [sale, appraisal, condition or comparable evidence]. Please confirm the filing period, required form, signature rules and evidence-submission deadline.”
Homeowner tax relief

Miami County Homestead Exemption and owner-occupancy reduction

Standard Homestead

Qualifying seniors, disabled homeowners and surviving spouses may shield $29,000 of market value.

Enhanced Homestead

Qualifying disabled veterans and certain public-service-officer surviving spouses may receive a $58,000 reduction.

2026 income threshold

New standard-program applicants generally use a maximum of $41,000 in 2025 Ohio modified adjusted gross income.

Standard eligibility checkpoints

Own an eligible interest in the home.
Occupy it as the principal residence on January 1.
Be 65 or turn 65 during the application year, or meet another eligible category.
Meet permanent-total-disability rules when applying by disability.
Meet the applicable owner-and-spouse income threshold unless grandfathered.
Claim only one principal residence.

Documents to prepare

Homestead supporting-document checklist
Applicant situation Documents Important detail
Senior applicant Proof of age, parcel number and ownership information. The applicant must meet the age rule during the application year.
Disabled applicant DTE 105E or qualifying state/federal disability certification. The disability must meet the permanent-and-total definition.
Income verification Ohio income information or other evidence when returns were not filed. Applicant and spouse income may both be included.
Trust, life estate or land contract Relevant trust, deed, life-estate, mortgage or land-contract pages. The documents must establish an eligible ownership interest and right to occupy.
Disabled veteran DD-214, qualifying award letter and enhanced-exemption application. The veteran program has separate service-connected disability rules.

Application deadline

Real property

File on or before December 31 of the year for which the exemption is requested.

Manufactured or mobile home

File on or before December 31 of the year before the exemption year.

Entity ownership warning: Property owned solely by a corporation, partnership, LLC or another legal entity generally does not qualify through the standard individual Homestead form.

Owner-occupancy tax reduction

An owner who occupies the property as a principal domicile on January 1 may apply for the owner-occupied reduction. A homeowner and spouse may receive the reduction on only one home, and the calculation generally applies to the dwelling and up to one acre.

Homestead and manufactured-home help: 937-440-5929 · Owner-occupancy and transfer help: 937-440-5930
Open official Homestead guidance Open current Homestead forms Open owner-occupancy guidance
Agricultural property

Miami County CAUV and Agricultural District requirements

Current Agricultural Use Valuation values qualifying farmland according to agricultural use rather than a potentially higher development value. Agricultural District status is a separate program with protections related to nuisance suits, certain assessments and eminent-domain review.

CAUV and Agricultural District rules
Program item Official requirement What the owner should retain
Agricultural-use history Qualifying use during the three calendar years before application. Crop, livestock, lease, conservation and production records.
Ten acres or more At least ten acres devoted exclusively to qualifying agricultural use. Acreage records, maps and evidence of use.
Less than ten acres Average yearly gross agricultural income of at least $2,500, or evidence of anticipated income. Sales receipts, farm schedules, leases and income records.
Federal conservation land Land may qualify when devoted to an eligible federal retirement or conservation program. Program agreements and payment records.
CAUV renewal Renew annually by the first Monday in March. A complete filed copy and proof of delivery.
Agricultural District Renew every five years. Application, acreage and qualifying-use documentation.
Conversion from agriculture Can trigger recoupment equal to the prior three years of CAUV tax savings. Conversion date, acreage and land-use records.

Agricultural District benefits

Nuisance protection

May provide an affirmative defense when acceptable agricultural practices are followed.

Assessment deferral

Can defer certain water, sewer or electric assessments until land use changes or the land leaves the district.

Eminent-domain review

Certain acquisitions involving agricultural-district acreage may receive additional state scrutiny.

Forest land: Ohio Forest Tax Law eligibility has separate forest-management, acreage and dimensional rules. Land enrolled in that forest program cannot also be enrolled in CAUV.
CAUV and Agricultural District: 937-440-5932
Open official CAUV guidance Open current agricultural forms
Fire, storm or destruction

Miami County damaged or destroyed property value reduction

When a building is substantially damaged or destroyed, the owner may apply for a temporary value deduction using DTE 26 for real property or DTE 49 for a manufactured home.

Ohio damaged-property filing schedule used by county auditors
Damage period Typical filing deadline Maximum proportional deduction
January through March December 31 of the damage year Up to 100%
April through June December 31 of the damage year Up to 75%
July through September December 31 of the damage year Up to 50%
October through December January 31 of the following year Up to 25%

Evidence to collect immediately

Parcel number and property address
Date and cause of damage
Dated exterior and interior photographs
Fire, police or emergency report
Insurance adjuster report
Contractor repair or demolition estimates
Building or demolition permits
Restoration completion records
Do not wait for the insurance claim to close: The statutory filing deadline can arrive before the insurance or construction process is finished.
Open current damaged-property forms Call appraisal: 937-440-5931
Deeds and ownership

Miami County conveyance fees, deed transfer and Recorder records

Conveyance fee

$2 per $1,000 of purchase price for a taxable transfer.

Transfer fee

$0.50 per parcel transferred.

Exact payment

The Auditor states that checks must be written for the exact fee amount.

Which conveyance form applies?

Common deed-transfer forms
Form General purpose Important check
DTE 100 Statement of value for a regular taxable real-property transfer. Report the actual consideration and parcel information accurately.
DTE 100EX Statement explaining a claimed conveyance-fee exemption. Select the correct statutory exemption rather than assuming every no-money transfer is exempt.
DTE 101 Additional statement involving Homestead property. Confirm whether the grantor currently receives Homestead.
DTE 102 Additional statement involving CAUV property. Understand possible CAUV continuation or recoupment consequences.

Transfer-to-record workflow

Confirm parcel and ownership Search the Auditor record and compare the parcel number and legal description with the proposed deed.
Prepare the deed and conveyance statement Use the correct taxable or exempt form and calculate the county fees.
Complete Auditor transfer review The Auditor processes parcel ownership and conveyance information.
Record the accepted document The Recorder preserves the legal instrument and its public image.
Verify the public parcel later Search by parcel or address until the new ownership and transfer information appear correctly.

How to find a deed or mortgage

Free watermarked online record

The Recorder’s basic search allows users to locate and view available deed, mortgage and encumbrance images without a copy charge.

Requested non-watermarked copy

Beginning January 2026, the Recorder lists a $2-per-page charge for copies supplied in person, by email or by mail. Prepayment is required.

Older records: For records before 1980, contact the Recorder. The county states that its deed records date back to Miami County’s establishment in 1807.
Deed transfer: 937-440-5930 · Recorder: 937-440-6040
Open official conveyance calculator Open conveyance forms Open official Recorder search instructions
Reports and county tools

Miami County sales, delinquency and tax-estimator tools

SALE
Sales Report

Search county sale activity within a selected date range.

LIST
Valid Sales List

Open weekly lists of sales marked valid for appraisal research.

DUE
Delinquency Report

Review the county’s published delinquency information, then confirm live status with the Treasurer.

TAX
2025 Tax Estimator

Estimate tax-year 2025 taxes payable in 2026 by district, property type and reduction status.

FEE
Conveyance Calculator

Estimate transfer fees from sale price and parcel count.

FORM
Form Center

Find BOR, CAUV, conveyance, destroyed-property, Homestead and owner-occupancy forms.

Sales Report Valid Sales Lists Delinquency Report Tax Estimator Current Forms
Planning helpers

Miami County property-search and tax mini-tools

Educational estimates only: These helpers do not replace the official parcel, effective tax rate, tax bill, exemption decision, conveyance calculation or Board of Revision determination.

Property-search helper

Choose the information you have to receive the best search route.

Property-tax planning estimate

Enter the appraised value and an estimated effective rate.

Conveyance-fee estimate

Enter the taxable purchase price and parcel count.

Correct-office finder

Choose an issue to identify the correct office.
Office and visit planning

Miami County Auditor address, phone numbers and office map

Miami County Auditor
Miami County Safety Building
201 West Main Street
Troy, OH 45373
Main contact

Phone: 937-440-5925

Hours: Monday-Friday, 8 a.m.-4 p.m.

Miami County Auditor department phone guide
Department Phone Call for
General Auditor 937-440-5925 General property, office and routing help.
Real-property appraisal 937-440-5931 Values, building data and property corrections.
Deed transfer 937-440-5930 Conveyance, transfer and owner-occupancy questions.
Homestead 937-440-5929 Homestead and manufactured-home reductions.
Board of Revision 937-440-5928 Formal valuation complaints.
CAUV and parcel splits 937-440-5932 Agricultural valuation, districts, splits and replats.
GIS 937-440-5449 Parcel-map and GIS assistance.
Treasurer 937-440-6045 Tax bills, payments and delinquency.
Recorder 937-440-6040 Deeds, mortgages, liens and official copies.
Bring the parcel number.
Bring government photo identification.
Carry complete forms and attachments.
Keep copies of everything submitted.
Confirm department availability before visiting.
Do not wait until the filing deadline to ask questions.
Editorial verification

How this Miami County guide was researched

Live county sources reviewed

Miami County Auditor property search, map, parcel records, reports, tax estimator, conveyance calculator, forms, Treasurer and Recorder.

Official documents reviewed

DTE 1 complaint and instructions, DTE 105A Homestead application and county guidance for CAUV, Agricultural District, owner occupancy and conveyance.

Review date: July 23, 2026. Property values, payment notices, deadlines, forms, fees and portal availability can change. Confirm any live filing or payment on the official county page.

Miami County Auditor property-search FAQs

Where can I search Miami County Auditor property records?

Use the official Miami County Auditor property-search page. It provides owner, parcel, address and advanced-search options.

How should I search by owner name?

Use last-name-first format. Start with the last name or distinctive business name, then add the first name or more words only when necessary.

Why did my address search return no result?

Remove the direction, street type, unit and punctuation. Enter only the house number and main street name before adding optional fields.

What information can I see in a parcel record?

Records may include ownership, parcel ID, legal description, values, taxes, land, structures, sales, exemptions, special assessments, photographs, sketches and map information.

Where do I pay Miami County property taxes?

Use the Miami County Treasurer’s official payment instructions. The Auditor provides property and tax-record information but does not collect the payment.

What is the 2026 second-half tax due date?

The real-property deadline was extended to August 20, 2026. The manufactured-home second-half deadline is August 31, 2026.

How do I challenge a property value?

Prepare the parcel record and market evidence, then file DTE Form 1 with the Board of Revision during the applicable January 1 through March 31 period.

What is the Miami County Homestead reduction?

The current standard program shields $29,000 of qualifying market value. Enhanced $58,000 programs apply to certain disabled veterans and eligible public-service-officer surviving spouses.

When is CAUV renewal due?

CAUV is renewed annually and is due by the first Monday in March. Agricultural District status is renewed every five years.

How much is the Miami County conveyance fee?

The Auditor lists $2 per $1,000 of taxable purchase price, plus a transfer fee of 50 cents per parcel.

Independent information notice: OhioAuditors.org is an independent educational website and is not the Miami County Auditor, Treasurer, Recorder or another government office. Use official county systems for live records, payments, filings and final decisions.
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Ohio Auditor Smart Tools

Parcel Search Help, Property Value Estimate, Homestead Savings & Correct Office Finder

Use these quick Ohio property tools to understand parcel search options, estimate property-tax impact, review Homestead Exemption savings, check value changes, and find whether your issue belongs to the county auditor, treasurer, recorder, or board of revision.

Built for Ohio property users Helpful for parcel lookup, owner search, property values, tax estimates, homestead, CAUV, conveyance, and records.
Educational estimate only Final values, tax bills, exemptions, deadlines, and official records must be confirmed with the county office.
Mobile friendly Designed for phones, tablets, and desktop screens without external scripts or extra plugins.

Ohio Parcel Search Helper

Ohio county auditor sites may let you search by parcel number, owner name, address, map number, or legal description. Use this helper to choose the best search method before opening the official county auditor property search.

Use the simplest version first. For an address, try house number + street name only.
Tips copied.

Ohio Property Tax Estimate Calculator

Ohio property tax is usually calculated from assessed value, not full market value. This tool uses the common 35% assessed value method and an estimated effective tax rate for planning only.

Ohio residential/agricultural real property is commonly assessed at 35% of appraised value.
Use an estimated effective yearly rate if known. Final tax depends on local levies and tax district.
Optional: enter yearly credit/exemption amount if already known.
Result copied.

Ohio Homestead Exemption Savings Estimator

Estimate possible savings from a homestead-style reduction. Eligibility, income limits, disability status, age requirements, and final savings must be confirmed with the county auditor or official Ohio tax guidance.

Enter the exemption amount you want to test. Verify the current official amount before using.
Result copied.

Property Value Change Review Tool

Use this tool to compare prior value and current value. If the increase looks high, review property details, comparable sales, tax district, improvements, and appeal/review options with the correct county office.

Review copied.

County Auditor, Treasurer, Recorder, or Board of Revision?

Ohio property users often contact the wrong office. Select your issue and this helper will show which office usually handles it.

Select an option above to see the correct office.

Ohio Property Record Review Checklist

Use this checklist before relying on a county auditor record, applying for homestead, checking a tax bill, or preparing a Board of Revision/value review.

Tip: If you notice a mistake, save the property record, collect proof, and contact the official county auditor or correct county office before any review or complaint deadline.
Important: These tools are for educational planning only. They do not replace official Ohio county auditor records, county treasurer tax bills, recorder documents, Board of Revision deadlines, legal advice, or tax advice. Always verify parcel data, values, exemptions, rates, tax bills, conveyance records, and deadlines with the official county office.