Miami County Auditor Property Search: Records, Taxes & Maps

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Miami County, Ohio · Parcel, value, tax, map and deed help

Search Parcels, Values, Taxes & Maps

Find a Miami County property by owner name, street address or parcel number, then use the official parcel record to review ownership, appraised value, assessed value, land, buildings, sales, tax charges, payments and map information.

This guide explains exactly what to type, how to fix an unsuccessful search, how to understand the record, and when to use the Auditor, Treasurer, Recorder, Tax Map Department or Board of Revision for the next step.

Read the quick answer See search steps Fix a failed search
Confirm the parcel before relying on the information. Match the property address and parcel number—not only an owner name. A recent transfer, parcel split, map change or data-processing delay can make one field appear different from what you expected.

Quick answer: use the Auditor search first

Open the official Miami County Auditor Advanced Search. Choose Owner Name, Parcel Number or Address Search, begin with one clean field, open the matching parcel, and save its parcel number before moving to tax payments, deeds, maps, forms or an appeal.

1 Search broadly Use last name, parcel ID or house number plus street.
2 Open the parcel Match the address, owner and location.
3 Save the ID Use the parcel number for every follow-up.
4 Choose the office Auditor, Treasurer, Recorder, Tax Maps or BOR.
Auditor phone

937-440-5925

Fax: 937-440-5920

Auditor office
201 West Main Street
Troy, OH 45373
Auditor hours

Monday–Friday

8:00 a.m.–4:00 p.m.

The official search also includes advanced filters for sales dates, prices, buyers, sellers, valid-sale status, tax districts, townships, municipalities, school districts, neighborhoods, acreage, year built, living area, bedrooms and bathrooms.

Open official Advanced Search Open official Auditor map
Official Miami County Ohio Auditor property search with owner parcel number and address lookup fields
Search Miami County property records by owner name, parcel number or street address using the official Auditor search tool.

Choose the property task you need to complete

This page is organized around actions rather than a directory of links.

Avoid the wrong county office

Which Miami County property office should you use?

Start with the Auditor to identify the parcel. Move to another office only when you need an action that the Auditor does not control.

Correct office or official tool for each task
What you need
Use this office
What it provides
Important limit
Owner, parcel number, address or property value
Miami County Auditor
Parcel search, values, property facts, sales, taxes, reports and map links.
The owner display is not a legal title opinion.
Tax bill, payment, due date or delinquency
Miami County Treasurer
Collections, payment options, bill printing, e-billing and payment contracts.
The Auditor does not collect the payment.
Deed, mortgage, lien or easement
Miami County Recorder
Official recorded-document indexes and images.
Recorder staff cannot conduct a legal title examination.
Parcel location or interactive map
Auditor Map
Parcel, owner, PIN and address map searches.
Displayed lines are not legal survey lines.
Survey plat, record plat or archived tax map
Tax Map Department
Survey files, record plats, tax-map PDFs, aerials and map assistance.
Archived PDFs are reference documents, not current boundary certifications.
Challenge the appraised value
Board of Revision
DTE 1 complaint review and a formal hearing when required.
BOR reviews value, not dissatisfaction with a tax rate.
Owner Occupancy, Homestead or CAUV
Miami County Auditor
Eligibility information, forms and annual agricultural renewal.
Each program has different qualifying rules.
Best local workflow: Search the Auditor record, copy the parcel number, print or save the property card, and provide that same parcel number whenever you contact the Treasurer, Recorder, Map Department or Board of Revision.
Buyer, investor and appeal research

Use Miami County’s advanced filters correctly

Advanced Search is useful when a simple owner or address lookup is not enough. It can narrow results by transaction, jurisdiction, land and building characteristics.

Advanced-search filters and practical uses
Filter
What it searches
Best practical use
Sale Date From / To
Transfers within a selected date range.
Find recent comparable sales or neighborhood activity.
Sale Price From / To
Transactions within a selected price range.
Remove unusually low or high transfers from early research.
Buyer or Seller Name
Transfers connected with a person, trust, company or estate.
Trace an investor, repeat buyer, family transfer or company sale.
Valid Sale
Sales marked valid, invalid or any status.
Begin comparable-sale research with valid sales.
Tax District
The parcel’s official taxing district.
Avoid comparing properties with materially different tax jurisdictions.
Township / Municipality
Official county location categories.
Separate Troy, Piqua, Tipp City, villages and unincorporated areas.
School District
Parcels within a selected school district.
Improve tax and value comparisons where school levies differ.
Neighborhood
Auditor appraisal-neighborhood groupings.
Find properties the appraisal system considers locally comparable.
Acreage
Properties within a land-size range.
Separate standard lots, acreage homes and agricultural parcels.
Year Built / Living Area
Residential age and finished-area ranges.
Improve comparable-property similarity.
Bedrooms / Bathrooms
Residential room and fixture ranges.
Remove significantly different homes from a comparison list.
Miami County search tip: Two nearby properties can sit in different townships, municipalities, school districts or taxing districts. Check the district before using a sale as tax or valuation evidence.
Troubleshooting order

No Miami County property result found?

Try these corrections before assuming the property is missing.

Owner search returned nothing Use the last name alone. Try a former owner, trust, estate, company or alternate spelling.
Address search failed Keep the house number and street name but remove the direction, suffix, unit number and punctuation.
Parcel number failed Recheck letters, zeroes and separators. Then search by owner or address to identify a changed parcel number.
The property recently sold Search the former owner and check the Recorder by grantor, grantee and approximate recording date.
The property was newly built Search the developer, parent parcel, former landowner or nearby road.
The address uses a rural route or state route Try fewer address terms and use the Auditor map to locate the road visually.
The parcel was split or combined Search current owner names and surrounding map parcels, then contact the Auditor or Tax Map Department.
The mailing city seems wrong Verify township, municipality, school district and map location instead of relying only on the mailing city.

Prepare this before contacting the Auditor

Complete property address
Current and former owner names
Parcel number, if available
Approximate transfer date
Township, city or village
Nearby road or intersection
Screenshot of the failed search
Reason you need the record
Useful Auditor call script “I am trying to identify the parcel at [property address]. The owner may be [name], and I have [parcel number, former owner or nearby road]. Can you confirm whether the parcel was transferred, split, combined or renumbered?”
Call the Auditor: 937-440-5925 Open the Auditor homepage
Parcel-record decoder

Understand the Miami County property record

The parcel page combines appraisal, legal, building, sales and tax information. Each field answers a different question.

Important property fields and what to do next
Field
What it means
Practical next action
Parcel number
The county identifier for the property record.
Use it for payments, maps, forms and office calls.
Owner
The owner name currently displayed by the Auditor.
Use the recorded deed when legal ownership proof is required.
Appraised value
The Auditor’s estimate of full market value.
Compare property facts and recent valid sales before disputing it.
Assessed value
Generally 35% of appraised value in Ohio.
Use it when understanding the tax calculation.
Tax district
The parcel’s combination of taxing jurisdictions.
Check it before comparing taxes with another property.
Land use
The property classification recorded for appraisal purposes.
Contact the Auditor when the actual use is materially different.
Legal description
An abbreviated recorded-property description.
Use the complete deed or survey for legal work.
Residential details
Stories, style, year, rooms, living area, basement, grade and condition.
Document significant factual errors before requesting correction.
Additions / Improvements
Garages, decks, barns and other valued structures.
Check whether removed or missing improvements are recorded correctly.
Sales
Buyer, seller, date, deed type, amount and validity.
Do not treat every zero-dollar or invalid transfer as a market sale.
Tax
Charges, reductions, credits, assessments, penalties, payments and amount due.
Separate a value issue from a special-assessment or payment issue.

Check these building facts before requesting a correction

Facts that may affect value
  • Finished living area
  • Year built and remodeling
  • Grade and condition
  • Basement and finished basement
  • Garage, deck, barn and additions
  • Acreage and land use
Evidence worth preparing
  • Current photographs
  • Measurements or floor plans
  • Permit or demolition records
  • Contractor estimates
  • Recorded deed or survey
  • Damage documentation
Tax-table tip: “Net tax” and “net owed” are not always the same. Special assessments, delinquency, penalties, interest and payments can change the final balance even when the ordinary property-tax charge looks correct.
2025 reappraisal and tax-year context

Why Miami County property values changed

Miami County highlights the 2025 countywide reappraisal. Ohio counties complete a full reappraisal on a six-year cycle, with a state-directed percentage update during the third year between full reappraisals.

Market approach

Compares relevant property sales while considering location, size, quality, design, age, condition and usefulness.

Cost approach

Estimates replacement or reproduction cost, applies depreciation and adds estimated land value.

Income approach

Often used for commercial or income-producing property based on its ability to generate income.

Why the percentage tax change may differ from the value change

Property taxes also reflect assessed value, effective tax rates, reduction factors, voted levies, tax districts, Owner Occupancy, Homestead, CAUV, special assessments and payment status. A 15% appraised-value increase does not automatically mean the final bill rises 15%.

2026 inflation-cap notice: Miami County says recent Ohio legislation created an inflation-cap credit for certain value increases. Not every parcel qualifies, and eligible second-half bills may be adjusted. Do not estimate or prepay the second half without confirming the actual bill.

Use the tax estimator carefully

Enter the 2025 appraised value Use the value currently displayed on the Auditor parcel page.
Select the correct tax district A nearby parcel may have a different township, city, school district or levy mix.
Select the property type Residential/agricultural and commercial/industrial calculations are not interchangeable.
Add applicable reductions Select Owner Occupancy or Homestead only when the parcel actually qualifies.
Treat the result as an estimate The tool estimates 2025 taxes payable in 2026 and may not reproduce every later adjustment or special assessment.
Open the official 2025 Tax Estimator Review 2025 reappraisal notices
Current 2026 tax-payment help

Check Miami County tax dates, fees and bills

First-half real property February 14, 2026

Past normal collection date.

Second-half real property August 20, 2026

Extended from July 20.

Manufactured home August 31, 2026

Published second-half date.

Treasurer phone 937-440-6045

Verify the exact amount due.

Do not submit an estimated second-half payment. Miami County extended the real-property due date because of the state inflation-cap credit and advises owners to wait for the bill or verify the exact balance. Paying an estimated amount could create an overpayment.

Property-tax payment methods

Miami County payment options and published fees
Method
What to prepare
Fee or rule
Practical warning
Mail
Bill stub and check payable to Jim Stubbs, Treasurer.
USPS postmark must be no later than the due date.
A private postage-meter date does not replace the required USPS postmark.
In person
Bill or parcel number and accepted payment method.
201 W. Main St., Troy; 8:00 a.m.–4:00 p.m.
Pay by the final collection day to avoid penalty.
Night deposit box
Clearly identified payment in a secure envelope.
Located on the east side of the Safety Building.
Do not place cash in an unattended box.
Credit or debit card
Parcel number, payment card and exact amount.
2.50% convenience fee.
Calculate the fee before paying a large bill.
eCheck
Routing and bank-account numbers.
$1.99 flat convenience fee.
Review every bank digit before submitting.
Phone payment
Parcel number and payment information.
Call First Billing Services at 855-270-3592; normal fees apply.
Payment-processing problems go to the provider, not the Treasurer.

Micro steps to pay online

Find the parcel first Confirm the parcel number, owner, address and exact current balance.
Check mortgage escrow Confirm whether the lender has already scheduled or completed payment.
Open the official payment route Use the Treasurer’s Payment Options page rather than an advertisement or unrelated payment service.
Match the parcel again Verify the parcel number and property address before entering financial information.
Compare fees A $1.99 eCheck may cost less than a 2.50% card fee on a large tax payment.
Save the confirmation Record the parcel number, amount, date, confirmation number and payment method.
Recheck posting A processing confirmation does not always mean the Auditor tax table has updated immediately.

Print or email a tax bill

Select PAY NOW You do not have to complete a payment merely to access bill information.
Create an account with the parcel ID The Treasurer says separate accounts may be needed when you own more than one parcel.
Open Account History Download or email the available bill from the account history area.
Check availability timing The current bill is generally available approximately four weeks before its due date.
Understand the escrow limitation The payment page says an owner with mortgage escrow may not be able to print the bill through this route.

Late or delinquent taxes

The Treasurer’s FAQ says a 5% penalty applies during the first ten days after a deadline and a 10% penalty applies afterward to unpaid current taxes. Delinquent-payment contracts may be available; call the Treasurer for the current terms.

Useful Treasurer call script “I am calling about parcel [parcel number] at [property address]. I need to confirm the exact current balance, whether a payment or escrow payment has posted, the correct due date and whether a delinquent-payment contract is available.”
Open official Payment Options Verify the 2026 extension Read Treasurer FAQs
Comparable-sale research

Use sales records before buying or appealing

Miami County provides sale-date, price, buyer, seller and valid-sale filters. Strong comparable sales should resemble the subject property in location, date, use, size, age and condition.

Match the location
  • Tax district
  • School district
  • Municipality or township
  • Neighborhood and road setting
Match the property
  • Property class
  • Living area
  • Year and style
  • Land size and improvements
Match the transaction
  • Recent sale date
  • Valid market sale
  • No family or gift transfer
  • No major multi-parcel difference

Transfers that may be weak evidence

Quitclaim or exempt transfer
Family or related-party transfer
Zero-dollar transfer
Sheriff or foreclosure sale
Partial ownership interest
Several parcels sold together
Substantially different condition
Different taxing or school district
Appeal preparation: Three to six well-matched, recent valid sales usually explain a value concern more clearly than a large export containing unrelated properties.
Open Advanced Sales Search
GIS, surveys and archived map records

Use Miami County maps without mistaking them for surveys

The Auditor map helps locate a parcel. The Tax Map Department maintains tax maps, survey plats, record plats, aerial photographs and other map archives.

Use the Auditor map in this order

Identify the parcel first Copy the parcel number from the property search whenever possible.
Open the Auditor map Search using the parcel, owner, PIN or address controls.
Choose the matching result Compare road position, neighboring parcels and jurisdiction information.
Use the map for orientation Review parcel context, aerial imagery and nearby properties.
Move to recorded records for legal questions Use deeds, plats, survey records and professional boundary work when exact lines matter.

What the Tax Map Department maintains

13,200

Survey plats

4,019

Record plats

2,873

Tax maps

745

Aerial photographs

Reference-only warning: Miami County states that archived tax-map and survey-plat PDFs are reference files. Ask the Tax Map Department for current information when a boundary, transfer, split or legal description matters.

How to find the correct archived tax map

Identify the municipality or township Use the Auditor parcel record rather than guessing from a mailing address.
Open the Tax Maps page Choose the named township, village, city quadrant or lot index.
Download the relevant PDF Tax-map files can be large, especially on a mobile connection.
Compare the parcel and routing clues Use the Auditor parcel number and map references to confirm the likely sheet.
Request current help when needed Contact the Map Department for a current official response rather than relying on an archived PDF alone.
Map Department
Safety Building
201 W. Main St.
Troy, OH 45373
Phone and fax

937-440-6025

Fax: 937-440-6026

Hours

Monday–Friday

7:30 a.m.–4:00 p.m.

Open Auditor parcel map Open Tax Maps and survey archives
Recorded-document workflow

Find deeds, mortgages, liens and easements

The Recorder—not the Auditor—maintains the documents that convey or encumber land. Use the Auditor record to collect names and dates, then search Recorder records by those names.

Search the Recorder’s free AVA database

Copy owner and sale clues Save the current owner, former owner, sale date and parcel number from the Auditor record.
Open Basic Records Search The Recorder provides free public access through the AVA Search Engine.
Enter Last Name or Business Name Add the first name only when the result list is too broad.
Search both parties Try the grantor and grantee, both spouses, trust names, LLC names and former surnames.
Use the date and document type Narrow to deed, mortgage, release, lien, easement or another relevant instrument.
Open and save the image Compare names, recording date, document type and legal-description clues.
Recorder search tip: Search by name rather than relying only on an address or parcel number. Those fields do not appear on every historical or indexed document.

Copy fees and current request rules

Beginning in January 2026, the Recorder states that staff-provided public land-record copies cost $2 per page. Online AVA searching remains available without charge. Prepayment is required for staff copy requests.

Selected Recorder copy and recording charges
Item
Published charge
Practical note
Photocopy
$2 per page
Search and download online first when possible.
Certified copy
$2 per page plus $1 per seal
Confirm whether the receiving agency needs certification.
Local or toll-free fax
$2 per page
Prepayment may be required.
Long-distance fax
$4 per page
Ask whether email delivery is available instead.
Recorded plat
$0.10 per square inch, $40 minimum
This is a recording fee, not an ordinary viewing fee.
Title warning: Public Recorder searching is not a title opinion, title-insurance commitment or legal interpretation. Use a title company or qualified attorney for a purchase, ownership dispute, unreleased lien, probate issue or complex easement.
Recorder office
201 West Main Street
Troy, OH 45373
Phone and fax

937-440-6040

Fax: 937-440-6041

Hours

Monday–Friday

8:00 a.m.–4:00 p.m.

Open official Recorder search instructions Check current Recorder fees
Conveyance and parcel transfer

Prepare a deed transfer without missing a required step

A transfer may require Auditor conveyance forms, an exact fee, Recorder document standards and additional review when Homestead, CAUV, a parcel split or an exempt transfer is involved.

Conveyance fee

$2 per $1,000 of purchase price.

Parcel transfer fee

$0.50 per parcel.

Exact-check warning: Miami County states that the conveyance-fee check must be for the exact amount or the conveyance will not be processed.

Choose the correct transfer form

Common Miami County conveyance forms
Form
Use it for
Important reminder
DTE 100
Regular money transfer and conveyance-fee statement.
Enter accurate consideration and parcel information.
DTE 100 EX
Claiming a qualifying exemption from conveyance fee.
Do not use it unless the transfer meets an exemption reason.
DTE 101
Conveyance involving Homestead property.
Review whether the credit continues or must change.
DTE 102
Conveyance involving CAUV property.
Check continuing agricultural eligibility and recoupment risk.

Transfer preparation checklist

Current parcel number
Complete deed
Legal description
Number of parcels
Purchase price or exemption basis
Exact conveyance-fee check
Homestead or CAUV status
Recorder formatting requirements
Calculate the conveyance fee Open current transfer forms
Credits, exemptions and agricultural use

Check Owner Occupancy, Homestead and CAUV

Property-tax reduction programs compared
Program
Main purpose
Key qualifying rule
Action
Owner Occupancy
Reduction for a qualifying principal residence.
Own and occupy the home as the principal residence on January 1.
Apply and later verify the credit on the parcel tax record.
Homestead
Shields qualifying home value from local property taxation.
Age, disability, income, veteran or surviving-spouse requirements may apply.
Use the appropriate DTE 105 form and supporting evidence.
CAUV
Values qualifying farmland according to agricultural use.
Agricultural use for three prior years plus acreage, income or conservation qualification.
Apply and renew annually by the first Monday in March.
Destroyed Property
Requests a value adjustment after qualifying damage or destruction.
Document the date, cause and extent of physical damage.
File the current destroyed-property form within the applicable period.

Owner Occupancy

Miami County states that an owner must own and occupy the home as the principal residence on January 1 of the filing year. A homeowner and spouse may receive the reduction on only one home, and the calculation covers the dwelling and up to one acre.

Buyer follow-up: Owner Occupancy is often addressed during a transfer, but a buyer should still check the parcel’s tax section later to confirm the credit appears.

Homestead Exemption

The standard Homestead Exemption can shield $29,000 of qualifying market value. Qualifying categories include eligible seniors, totally and permanently disabled Ohioans and certain surviving spouses. Enhanced $58,000 treatment may apply to qualifying disabled veterans and specified surviving spouses.

Proof of age when applicable
Ownership and principal residence
Income information when required
Disability certification
DD-214 and award letter for veteran application
Surviving-spouse documentation

CAUV agricultural-use valuation

Basic eligibility paths
  • At least 10 acres in qualifying agricultural use
  • Or less than 10 acres producing average gross income of at least $2,500
  • Or eligible federal conservation or land-retirement participation
  • Qualifying use during the three prior calendar years
Ongoing responsibilities
  • File initial DTE 109
  • Renew annually
  • Return renewal by the first Monday in March
  • Report applicable transfers
  • Preserve income and land-use evidence
CAUV recoupment warning: Land converted from agricultural use can be charged recoupment equal to the tax savings on the converted land during the three immediately preceding years.

Form finder

Common Auditor forms
Form
Purpose
Before filing
DTE 1
Real-property valuation complaint.
Prepare evidence and meet the March 31 deadline.
DTE 105A
Standard Homestead application.
Confirm age, disability, income and residence requirements.
DTE 105I
Disabled-veteran Homestead application.
Prepare military and disability documentation.
DTE 105K
Public-service-officer surviving-spouse Homestead application.
Prepare official line-of-duty documentation.
DTE 109
Initial CAUV application.
Document acreage, use or qualifying income.
DTE 109A
Annual CAUV renewal.
Return it by the first Monday in March.
Open current Auditor forms Review Homestead rules Review Owner Occupancy Review CAUV requirements
Board of Revision workflow

Challenge an incorrect Miami County property value

Board of Revision is for a disagreement with the property’s valuation. It is not the correct process when the real problem is a tax payment, special assessment or voter-approved tax rate.

Check for a simpler correction first

Living area
Year built
Grade and condition
Basement and finished area
Garages and additions
Land acreage and use
Recent sale information
Owner Occupancy or Homestead status

File a value complaint step by step

Identify the value you dispute Record the parcel number, current appraised value and value you believe the evidence supports.
Collect property-specific evidence Use a recent valid sale, professional appraisal, comparable sales, photographs, estimates or proof of incorrect facts.
Download the current DTE 1 Use the Miami County Auditor forms page rather than a saved form from another county.
Complete every applicable field Explain the requested value and the factual reason for the change.
File during the statutory period Miami County states that DTE 1 must be filed between January 1 and March 31.
Keep evidence and proof of filing Save the complaint, attachments and confirmation or delivery evidence.
Prepare for possible hearing The Board may decide from the submission or schedule a formal hearing for additional review.

Evidence that can explain a requested value

Market evidence
  • Recent arm’s-length purchase
  • Comparable valid sales
  • Independent appraisal
  • Documented marketing history
Physical evidence
  • Interior and exterior photographs
  • Structural or repair estimates
  • Damage documentation
  • Measurements and property-record errors
Do not argue only that taxes are too high. Explain why the appraised market value is incorrect and support the requested value with property-specific facts.
Useful value-review call script “I reviewed parcel [parcel number] and believe the appraised value is incorrect because [sale, factual error, condition or comparable evidence]. Can you confirm whether this can be corrected informally or whether I should file DTE 1 before March 31?”
Open Board of Revision information Download DTE 1 and instructions
Phone, address and visit planning

Miami County property contacts and office location

Contact the office that can complete the action
Office
Use it for
Phone
Address and hours
Auditor
Parcel records, values, property facts, forms, Homestead, Owner Occupancy, CAUV and BOR.
937-440-5925
201 W. Main St., Troy, OH 45373
8:00 a.m.–4:00 p.m.
Treasurer
Tax bills, payments, posting, delinquency, penalties and payment contracts.
937-440-6045
201 W. Main St., First Floor, Troy, OH 45373
8:00 a.m.–4:00 p.m.
Recorder
Deeds, mortgages, liens, easements, recorded images and certified copies.
937-440-6040
201 W. Main St., Troy, OH 45373
8:00 a.m.–4:00 p.m.
Tax Map Department
Tax maps, surveys, record plats, map sheets and current map assistance.
937-440-6025
201 W. Main St., Troy, OH 45373
7:30 a.m.–4:00 p.m.

Prepare this before visiting or calling

Parcel number
Complete property address
Owner name
Relevant tax year
Deed or transfer date
Form name
Short explanation of the issue
Supporting records or screenshots
One call script for any property problem “I am contacting you about parcel [parcel number] at [property address]. I need help with [value, tax payment, ownership, deed, map, exemption or transfer]. The record currently shows [brief fact]. Which official tool, form or office should I use next?”
Nearby Ohio property guides

Check a neighboring county when the address is near the boundary

A mailing city or ZIP code does not always make the county obvious. Check the parcel’s county before repeating the same search.

Montgomery County

Useful for properties south of Miami County or addresses connected with the Dayton metropolitan area.

Open Montgomery County property search
Clark County

Useful for properties near the southeastern Miami County boundary and Springfield-area records.

Open Clark County property search
Greene County

Useful when broader Dayton-area research crosses county lines or school and taxing districts appear unfamiliar.

Open Greene County property search
Important record limits

What online Miami County property records cannot prove

Online records are useful for
  • Finding the parcel and owner display
  • Reviewing value and building information
  • Checking taxes, payments and reductions
  • Finding sales, maps, forms and document clues
  • Preparing a focused county-office question
Get additional verification for
  • Legal ownership or clear title
  • Exact property boundaries
  • Zoning, building or flood approval
  • Unreleased liens and easements
  • Purchase, lending or legal decisions
Responsible-use warning: Do not identify or accuse a person from an owner-name result alone. Confirm the property, parcel number and recorded documents before relying on a same-name match.
Ten practical answers

Miami County property search FAQs

How do I search Miami County property records by owner name?

Open the official Miami County Auditor Advanced Search and enter the owner name in Last First format. Begin with the last name only, add the first name only if too many results appear, and verify the property using its address and parcel number.

Can I search a Miami County property using only the address?

Yes. Enter the house number and main street name first. Add the directional abbreviation and street-type abbreviation only when necessary. Remove unit numbers and extra punctuation if the search returns no result.

Where can I find the Miami County parcel number?

The parcel number appears on the Auditor property page, tax bill, Treasurer account and many recorded-property documents. Save it because it is the most useful identifier for tax, map, deed, form and office questions.

What is the difference between appraised and assessed value?

Appraised value is the Auditor’s estimate of full market value. Assessed value is generally 35 percent of appraised value in Ohio and is used with the applicable tax rate, credits, reduction factors and special assessments.

When is the second-half 2026 Miami County property-tax payment due?

Miami County extended the second-half Tax Year 2025 real-property payment deadline to August 20, 2026 because of implementation of the state inflation-cap credit. Property owners should verify the exact bill before paying.

How do I print a Miami County property-tax bill?

Open the Treasurer payment route, select Pay Now, register using the parcel ID and open Account History to download or email the bill. The Treasurer says a separate account may be required for each parcel and escrowed parcels may not offer bill printing.

Are Miami County Auditor map lines legally exact?

No. Auditor maps, archived tax maps and survey-plat PDFs are useful reference resources but do not establish an exact legal boundary. Use recorded documents and a licensed surveyor when a fence, building, driveway or boundary dispute is involved.

Where can I search a Miami County deed, mortgage or lien?

Use the Miami County Recorder’s free AVA records search. Search by owner, grantor, grantee or business name rather than relying only on the parcel number or address, because those fields may not appear on every recorded document.

How do I challenge a Miami County property value?

Review the parcel facts and comparable sales first, then file the current DTE 1 complaint with the Miami County Auditor between January 1 and March 31. Include evidence such as a recent valid sale, appraisal, photographs or proof of incorrect property characteristics.

What is the difference between Owner Occupancy, Homestead and CAUV?

Owner Occupancy is for a qualifying principal residence, Homestead provides additional relief for eligible senior, disabled, veteran or surviving-spouse homeowners, and CAUV values qualifying agricultural land according to agricultural use.

Information verification: Property-search fields, office contacts, 2026 tax dates, payment fees, bill-printing steps, Recorder-copy charges, map-department holdings, Homestead amounts, CAUV rules, conveyance fees and Board of Revision procedures were checked against Miami County’s official websites in July 2026. Recheck the responsible office before a payment, deadline, filing or in-person visit.
Independent guide: CountyAuditors.org is not the Miami County Auditor, Treasurer, Recorder, Tax Map Department or Board of Revision. Live ownership, value, tax, payment, map, document and filing information is controlled by the responsible government office. Online records should not replace legal, surveying, title, lending or tax advice.
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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