King County Assessor Property Search: Records, Tax & GIS

by
King County, Washington · Assessor parcels, GIS, tax, deeds, exemptions and appeals

Find a Parcel, Value, Map or Recorded Document

Search King County property records by address, 10-digit parcel number or condominium name, then review assessed values, property characteristics, levy rates, sale history, district information and the parcel’s mapped location.

This guide separates the Assessor, Recorder, Treasury, GIS and Board of Appeals functions so you can use the correct official tool, understand the result and complete the next action without being sent between unrelated county offices.

Get the quick answer Follow property-search steps Check the appeal deadline
The King County Auditor is not the property-search office. Use the Assessor for parcel values and characteristics, the Recorder for deeds and liens, KCGIS for maps, Treasury for tax payments and the Board of Appeals and Equalization for assessment appeals.

Quick answer: start with Parcel Viewer or eReal

Use Parcel Viewer when you have an address, condominium name or approximate map location. Use eReal Property when you already have the 10-digit parcel or property-tax account number. Select the parcel, verify the address and save the parcel number before opening tax, deed, sales, district or appeal tools.

1 Locate the parcel Search the address, condo or 10-digit number.
2 Verify two facts Match the parcel number and physical address.
3 Save the report Keep values, characteristics, sales and levy details.
4 Use the right office Recorder, Treasury, GIS or appeal board.

Official facts at a glance

Parcel identifier 10-digit assessor parcel number
Assessor John Wilson
Assessor phone 206-296-7300
Assessor email Assessor.Info@KingCounty.gov
Office 201 S. Jackson St., second floor
Office hours 8:30 a.m.–4:30 p.m. weekdays
First-half tax April 30, 2026 — passed
Second-half tax October 31 statutory date
Recorder phone 206-477-6620
Tax customer service 206-263-2890

Parcel Viewer searches by address, parcel number or condominium name and links directly to the complete eReal Property report and Districts and Development Conditions report.

Open official Parcel Viewer Open eReal Property

Choose the property task you need

Each section leads to a specific action rather than sending users through a directory of unexplained links.

Stop using the wrong department

Which King County office handles each property task?

Correct official office or system
What you need
Use this office or tool
What it provides
Important limit
Owner display, address, value or characteristics
Department of Assessments / eReal
Parcel data, assessed value, levy rates, property details and sale history.
Not a title report or tax-payment receipt.
Visual parcel location
KCGIS Parcel Viewer
Address search, parcel selection, approximate lot lines and report links.
Lot lines are approximate and not for legal use.
Planning districts, jurisdiction or development conditions
Districts and Development Conditions Report
Planning, administrative, electoral and development-condition information.
Confirm permits and zoning with the responsible city or county agency.
Current property-tax amount or payment
Treasury Operations
Account balance, payment, posting, delinquency and payment-plan help.
Treasury does not establish assessed value.
Deed, mortgage, lien, easement, plat or survey
Recorder / Landmark
Recorded-document indexes, images and copy ordering.
A database search is not a complete title examination.
Documents before August 1991
King County Archives
Microfilm research and copies of older recorded documents.
Research may require a name, date or recording number.
Challenge assessed value
Board of Appeals and Equalization
Independent review of an assessment appeal.
The board considers market-value issues, not general tax hardship.
Appeal research or filing help
Property Tax Advisor
Independent guidance on assessment, levies and appeal preparation.
The Advisor does not decide the appeal.
Senior, disability or veteran tax relief
Assessor Exemptions
Eligibility screening, applications, exemptions and deferrals.
Separate income, occupancy and status rules apply.
Fastest sequence: Use Parcel Viewer to find the parcel number, open eReal for details, then use that same 10-digit number in Treasury, Recorder, GIS and appeal questions.
Why “Auditor search” is misleading

King County’s old Auditor recording role ended in 1969

From 1854 through 1969, the King County Auditor recorded public documents. The county’s 1969 home-rule charter abolished that office structure, and the Recorder assumed responsibility for land-record documents beginning in 1970.

1854–1969

Recorded property documents were maintained under the County Auditor.

1970–present

The Recorder’s Office handles deeds, mortgages, liens, plats, surveys and other recordings.

Current Auditor

The modern Auditor’s Office performs oversight and performance audits, not parcel or deed searches.

Historical-search tip: Older records may still be described as “Auditor records,” and a recording number may also be called an “auditor’s number.” That number identifies a document—not a taxable parcel.
Failed-search recovery

No parcel or property record found?

Complete address failed Remove the unit, direction, street suffix and punctuation. Keep the house number and main street word.
Parcel number failed Confirm that all 10 digits came from a King County tax or assessment record rather than a recording number.
Condo unit is missing Search the complex name and select the individual unit parcel instead of the development’s common parcel.
Property recently sold Search the parcel rather than only the new owner. The assessment and Recorder systems may update at different times.
New parcel or short plat Search the parent parcel, prior owner or nearby map location until the new parcel is fully processed.
Building has several parcels Review each parcel’s address, legal description and property class before choosing one.
Parcel Viewer will not load Reopen the official launch page, clear cached data and try a current browser.
Address may be outside King County Confirm the county and city jurisdiction before repeating the same search.

Prepare this information before calling

Complete physical address
Possible parcel number
Current and former owner
Condominium or development name
Approximate purchase date
Nearby parcel or intersection
Assessor call script “I am trying to identify the parcel at [address]. I have [possible parcel number, owner, condo name or nearby parcel]. Can you confirm the correct 10-digit parcel number or explain whether the parcel was divided, combined or recently created?”
Call Assessor: 206-296-7300 Email Assessor information
eReal report decoder

Understand the King County property report

Property-report fields and next actions
Field
What it means
Practical next action
Parcel number
The 10-digit Assessor account identifying the taxable parcel.
Use it for tax, map, Recorder and appeal work.
Taxpayer or owner
The ownership or taxpayer name currently displayed.
Verify legal ownership through the recorded deed.
Legal description
An abbreviated description connecting the parcel with recorded land records.
Use the full deed, plat or survey for legal work.
Present use
The Assessor’s current property-use classification.
Report a material classification error to Assessments.
Land value
The assessed portion assigned to the land.
Check lot size, zoning context, access and restrictions.
Improvement value
The assessed portion assigned to buildings and improvements.
Verify square footage, age, quality, condition and features.
Total assessed value
The market-value assessment used for the following tax year.
Compare valid sales before filing an appeal.
Levy code
The combination of taxing districts applying to the parcel.
Use the parcel-specific rate rather than a countywide estimate.
Sales history
Transfer and sale information connected with the parcel.
Open eSales or Landmark to investigate the transaction.
Property Tax Bill link
A link from the parcel report to the Treasury account.
Verify the live balance and payment posting before paying.
Districts Report
A linked report covering planning, administrative and jurisdiction information.
Use it before permit, zoning or development research.
Parcel number versus recording number: A parcel number identifies land for assessment and taxation. A recording or instrument number identifies one document such as a deed, mortgage, lien or easement.
GIS and development research

Use Parcel Viewer, iMap and district reports correctly

Choose the correct King County mapping tool
Tool
Best use
Important limit
Parcel Viewer
Search by address, parcel or condo; select parcels and open property reports.
Lot lines are approximate and not for legal use.
iMap
Custom map displays, aerials, contours, zoning, districts and other GIS layers.
Some zoning layers apply only to unincorporated King County.
eMap
Search map references using the 10-digit parcel number or section-township-range.
It is not a substitute for a recorded survey.
Districts and Development Conditions
Check jurisdiction, planning designations, district information and development conditions.
Confirm regulatory decisions with the responsible permit agency.
Recorded plat or survey
Research recorded boundaries, lots, easements and subdivision information.
Use a licensed surveyor for ground-located boundaries.

Parcel Viewer micro-steps

Search by address, parcel or condo Use the least complicated version of the search information.
Zoom until parcel outlines appear Select the parcel only after confirming its location.
Single-click the parcel Open its summary information and report links.
Open Property Report Review the complete eReal assessment record.
Open Districts Report Check city, planning, administrative and development-condition information.
Export selected parcels carefully Do not use public lists of individuals for prohibited commercial purposes.
Boundary warning: Do not locate a fence, structure, driveway, easement or utility from Parcel Viewer alone. Use recorded documents and professional survey evidence.
Open Parcel Viewer Open King County iMap Open eMap search
Comparable-sale research

Use eSales without choosing misleading comparisons

King County eSales can search sold property by parcel number for similar characteristics or by geographic area. Assessments are made as of January 1 for taxes paid the following year.

Micro steps for eSales

Start with the subject parcel Save its parcel number, assessment year and major property characteristics.
Choose parcel or area search Parcel search looks for similar characteristics; area search focuses on a geographic market.
Select the correct tax or assessment year Use sales relevant to the January 1 valuation date.
Match property type and size Separate condos, detached homes, vacant land, apartments and commercial property.
Review the transaction Determine whether the sale appears arm’s length and market-based.
Explain differences Adjust your reasoning for location, condition, view, lot, age, size and improvements.
Match location
  • Neighbourhood and jurisdiction
  • School and levy districts
  • Access and transit
  • View or waterfront influence
Match improvements
  • Building type and size
  • Age and condition
  • Bedrooms and bathrooms
  • Garage and accessory structures
Review the sale
  • Sale date
  • Arm’s-length exposure
  • Related-party transfer
  • Foreclosure or unusual conditions
Appeal tip: The percentage by which your value increased is not persuasive by itself. Evidence should show the Assessor’s value exceeds true and fair market value.
Open official eSales
Current 2026 payment guidance

First-half taxes are late; second-half taxes are next

First-half deadline April 30, 2026

Late charges began May 1 on unpaid amounts.

Second-half statutory date October 31, 2026

The date falls on a Saturday.

Weekend rule Next business day

Confirm the live county deadline before relying on November 2.

First-half delinquency warning: When first-half taxes were not paid by April 30, monthly late charges are calculated under state law. Use the live Treasury account to obtain the exact amount due.

How to check and pay a tax account

Find the 10-digit account number Use the tax statement, value notice, Parcel Viewer or eReal.
Open the official Treasury payment system Search the account and match the property address.
Review the live amount Check first-half delinquency, second-half amount, pending payments and credits.
Select an approved payment method Pay online by card, debit card or electronic check; by mail; in person; or by secure drop box.
Review the processing fee Beginning January 1, 2026, credit and debit card payments carry a 2.35% service fee with a $2 minimum.
Save confirmation Keep the payment date, parcel number, amount, method and receipt.
Check posting Pending payments or account changes can affect the online balance.

Payment methods and practical warnings

King County property-tax payment options
Method
How it works
Important warning
Online
Use the secure eCommerce system with card, debit card or electronic check.
Review the processor fee before submitting.
Mail
Mail check, cashier’s check or money order to King County Treasury, 201 S. Jackson St., Suite 710, Seattle, WA 98104.
Write the account number on the payment and do not mail cash.
In person
Pay at 201 S. Jackson St., second floor, weekdays from 8:30 a.m.–4:30 p.m.
Card fees apply; check holiday closures.
Secure drop box
Use the box near Second Avenue and South Jackson Street during published weekday access hours.
Use check or money order only; never deposit cash.
Phone
Treasury staff can explain the online process.
King County does not process property-tax payments by phone.
Payment-plan help: King County offers monthly payment plans for delinquent prior-year taxes. Contact Treasury rather than allowing additional monthly charges to accumulate without a plan.
Treasury call script “I am calling about parcel [10-digit number] at [address]. I need the exact current balance, including late charges or pending payments, and I need to confirm the approved payment or payment-plan options.”
View account or pay taxes Read official payment guidance Call Treasury: 206-263-2890
Deeds, liens, plats and surveys

Search King County Recorder records in Landmark

Landmark is the official recorded-document search. It is separate from the Assessor’s parcel database and supports several document-focused search methods.

Available Landmark searches

Name

Enter last name, comma, then first name, such as Doe, John.

Parcel ID

Enter the first 10 parcel digits with “Starts With.” Parcel searching covers 1997 to current.

Recording number

Use the unique instrument number when it is already known.

Legal search

Use Advanced Legal for surveys, plats, condominium and PUD records.

Search a deed or lien step by step

Find the parcel in eReal Save the parcel number, current owner, prior owner and sale date.
Open Landmark and accept the terms Use the official system for individual lawful document research.
Search by name first when necessary Use last name, comma, first name and try grantor and grantee directions.
Narrow by document type or date Select deed, deed of trust, reconveyance, lien, easement, plat, survey or another record.
Open the result line Review the document details and available image.
Match the property Compare names, date, parcel, legal-description information and consideration.
Order the correct copy Choose uncertified or certified only after confirming the document.
Parcel-index limitation: Recorder parcel-number indexing was not consistently used until about 2002. A parcel search can miss earlier documents even when the document exists. Search names and dates as well.

Recorder coverage

Which office has the recorded document?
Recording period
Online availability
Best route
August 1, 1991–present
Index and images of most recorded documents online.
Use Landmark; copies can be ordered online.
1976–July 31, 1991
Indexed in Landmark, but images are generally not online.
Use Landmark to identify the record, then request the image from Archives.
1853–1975
General grantor/grantee indexes are not fully digitized.
Research through King County Archives using names and dates.
Plats, surveys and maps
Digitized maps can be available across a wider historical period.
Use Landmark Book and Page or Advanced Legal search.
Free fraud-monitoring tool: Register for the Recording Activity Notification System to receive an email when a land-record document matching a subscribed personal or business name is recorded.

Recorder contact

Office and hours
201 S. Jackson St., Suite 204
Seattle, WA 98104
8:30 a.m.–4:30 p.m. weekdays
Recording cutoff

Document recording ends at 3:30 p.m.

Arrive earlier for document review and fee questions.

Phone and email

206-477-6620

Phone hours: 9 a.m.–2 p.m.

KCROCust@kingcounty.gov

Read Recorder search instructions Open Landmark records search
Ownership history and older documents

Trace a property backward through prior deeds

King County does not provide one single ownership-history report covering every year. Build the chain backward from the current deed.

Start with the current parcel report Note the current owner, recent sale date and deed reference.
Find the current vesting deed Search Landmark by owner or parcel.
Identify the seller The seller or transferring party is generally listed as the grantor.
Search when that grantor acquired the property Search the same person as grantee in an earlier transaction.
Repeat the backward search Continue using names, dates and recording numbers.
Move to Archives when online coverage ends Prepare the approximate date and at least one party name.
Easement research: Easements can appear as separate recorded documents, text or attachments in a deed, or lines and notes on a recorded plat. Search more than one source.
King County Archives
1215 E. Fir St.
Seattle, WA 98122
Contact

206-263-2480

archives@kingcounty.gov

Public access

Phone and email: weekdays, 9 a.m.–4 p.m.

Walk-in lobby: Tuesday and Wednesday, 10 a.m.–3 p.m.

Research room access is by appointment.

Open recorded-document research guide
Time-sensitive 2026 action

The July 1 date passed, but your 60-day window may remain open

Standard annual date July 1, 2026

This standard date has passed.

Alternative deadline 60 days after notice

Use the mailed date printed on the value notice.

Action now Check eAppeals

Enter the property address or parcel number.

Do not assume your appeal is late. The filing deadline is the later of July 1 or 60 calendar days after the value notice was mailed. King County mailed some 2026 residential notices during June and July.

Check the record before filing

Parcel number and address
Notice mailing date
Land and building characteristics
Assessor’s value
Your supported opinion of value
Comparable sales
Easements or restrictions
Critical-area or development limitations
Repair estimates
Copy of the value notice

File a complete appeal

Review eReal Property first Contact the Assessor about factual errors. A correction may resolve the issue without a formal appeal.
Check the exact due date Use eAppeals with the property address or parcel number.
Prepare one petition per parcel Multi-parcel property requires separate petitions.
State both values Include the Assessor’s value and your supported opinion of true and fair market value.
Explain the market-value error General hardship, tax amount or percentage increase is not enough.
Attach the notice and evidence Incomplete petitions are not accepted.
File online or by mail The Board does not accept assessment appeals by email.

What happens after filing?

King County appeal process after submission
Stage
What happens
What you should do
Acknowledgment
The Board reviews the petition and sends acknowledgment.
Correct any pending or incomplete items immediately.
Assessor response
The petition is forwarded to the Assessor for review.
Read the response and compare its evidence with yours.
Evidence deadline
Evidence is generally due 21 business days before the hearing.
Do not wait until the hearing to provide critical documents.
Hearing notice
The Board generally provides about 45 days’ hearing notice.
Request rescheduling within seven business days when necessary.
Hearing
The Board generally allows 40 minutes for each appeal.
Present the strongest market evidence first.
Decision
Decisions are generally issued within about 45 days after hearing.
Review the mailing date immediately.
State appeal
A Board decision can be appealed to the Washington Board of Tax Appeals.
File within 30 days of the county decision’s mailing date.
Continue paying taxes. An assessment appeal does not suspend the payment deadline. Pay on time to avoid late charges while the appeal is pending.
Appeal-help call script “I received a valuation notice dated [date] for parcel [number]. I believe the value is incorrect because [comparable sales, factual error, easement, restriction, development limitation or condition evidence]. Can you confirm my filing deadline and whether my petition package is complete?”
Read official appeal instructions Open eAppeals instructions Call Board: 206-477-3400 Call Tax Advisor: 206-477-1060
Senior, disability and veteran relief

Check the $84,000 exemption income limit

For 2024, 2025 and 2026 property taxes, King County’s exemption portal lists a maximum household income of $84,000 after eligible deductions.

Ownership and residence
  • Own the home
  • Use it as the principal residence
  • Generally occupy it for more than six months of the preceding year
Age or status
  • At least 61 by December 31 of the preceding year
  • Or qualifying disability
  • Or qualifying service-connected veteran disability
  • Some surviving partners may qualify from age 57
Income
  • Household income of $84,000 or less
  • Apply permitted expense deductions
  • Include spouse, partner and resident co-owner income as required

Application micro-steps

Choose the application year Separate applications may be required for 2023, 2024, 2025 and 2026.
Confirm age, status and occupancy Requirements must be met for each requested year.
Calculate household income Include required household members and subtract qualified expenses.
Gather documents Prepare ownership, residency, income, deduction, disability or veteran evidence.
Apply online or by paper King County recommends online filing for faster processing.
Apply for eligible prior years together Do not wait to submit each year separately when several years may qualify.
Refund timing: Applications generally must be received within three years of the applicable property-tax due date to qualify for a refund of excess taxes already paid.

Exemption versus deferral

Exemption

Reduces qualifying property taxes based on programme rules and does not operate like a loan against the property.

Deferral

Postpones qualifying tax liability and creates a lien that must eventually be repaid with applicable interest.

Exemption help

206-296-3920

Exemptions.Assessments@kingcounty.gov

Farm and agriculture

206-263-2374

Destroyed property

206-263-2332

Open senior exemption portal Open 2026 paper forms
Personal property and mobile homes

Use the separate account path when the property is not real estate

Business assets are personal property. Mobile and floating homes can also be taxed as personal property when they are not associated with a real-property account.

Business personal property
  • Use eListing for business equipment and supplies
  • Provide asset description, acquisition year and cost
  • Listing forms are due April 30
  • Assessment appeals follow the July 1 or 60-day rule
Mobile or floating home
  • May have a separate personal-property account
  • Do not assume a land parcel search will find it
  • Call the personal-property section for the account number
  • Treasury has a separate personal-property tax contact
Assessment account help

206-296-5126

Treasury personal property

206-263-2844

Email

personal.property@kingcounty.gov

Phone, address and visit planning

King County property contacts

Contact the office that can complete the task
Office
Use it for
Contact
Location and hours
Department of Assessments
Parcel information, assessed values, characteristics, sales and exemptions.
206-296-7300
Assessor.Info@KingCounty.gov
201 S. Jackson St., second floor, Seattle, WA 98104
8:30 a.m.–4:30 p.m. weekdays
Treasury Operations
Tax balance, payment, delinquency and payment plans.
206-263-2890
PropertyTax.CustomerService@kingcounty.gov
201 S. Jackson St., second floor, Seattle, WA 98104
In-person service 8:30 a.m.–4:30 p.m. weekdays
Recorder
Deeds, mortgages, liens, easements, plats, surveys and copies.
206-477-6620
KCROCust@kingcounty.gov
201 S. Jackson St., Suite 204, Seattle, WA 98104
8:30 a.m.–4:30 p.m.; recording ends 3:30 p.m.
Board of Appeals and Equalization
Property-assessment appeal filing and hearings.
206-477-3400
BOE@kingcounty.gov
516 Third Avenue, Room 1222, Seattle, WA 98104
Confirm filing or visit arrangements
Property Tax Advisor
Independent appeal, levy and assessment help.
206-477-1060
taxadvisor@kingcounty.gov
Contact the office before an in-person visit.
King County Archives
Recorded documents and historical property records before online image coverage.
206-263-2480
archives@kingcounty.gov
1215 E. Fir St., Seattle, WA 98122
Walk-in lobby Tuesday–Wednesday, 10 a.m.–3 p.m.
Universal property call script “I am contacting you about parcel [10-digit number] at [address]. I need help with [assessment, map, tax payment, deed, lien, exemption or appeal]. The public record currently shows [brief fact]. Which official tool, form or office should I use next?”
Other Washington property systems

Property offices differ across Washington counties

King County separates assessment, recording, GIS and Treasury functions. Other Washington counties may still place recording services under an elected Auditor.

Franklin County, Washington

Use this guide when the property is in Pasco or another Franklin County jurisdiction rather than King County.

Open Franklin County WA property guide
Do not reuse a King County parcel number

Every county maintains its own parcel and recording systems. Confirm the county before opening another property portal.

Accuracy and lawful use

What public property tools cannot establish

Useful for
  • Locating a parcel
  • Reviewing values and property characteristics
  • Finding sale and levy information
  • Locating deeds, plats and surveys
  • Preparing questions for county offices
Get additional verification for
  • Legal ownership or marketable title
  • Exact boundary locations
  • Current liens and easements
  • Zoning or permit approval
  • Purchase, lending or legal decisions
Commercial-use restriction: Washington law restricts the use of lists of individuals obtained from public records for commercial purposes. Use property data lawfully and do not identify a person from a same-name result alone.
Ten practical answers

King County property search FAQs

Does the King County Auditor handle property searches?

No. The current King County Auditor’s Office performs government oversight and audits. Parcel values and property details are handled by the Department of Assessments, deeds and liens by the Recorder’s Office, maps by KCGIS, and property-tax payments by Treasury Operations.

How do I search King County property by address?

Use King County Parcel Viewer or eReal Property. Enter the house number and main street name, select the correct parcel, and verify the 10-digit parcel number before relying on the property report.

What is the King County parcel number?

The assessor parcel number is a 10-digit number identifying a specific taxable parcel. It is different from a Recorder recording number, which identifies a particular deed, mortgage, lien, plat or other recorded document.

Why can I not find a King County property address?

Remove unit numbers, punctuation, directional letters and road suffixes. Search with the house number and main street word, try a condominium name, use Parcel Viewer, or search the previous owner if the property recently transferred.

When are King County property taxes due in 2026?

The first-half deadline was April 30, 2026. The statutory second-half date is October 31. When a due date falls on a weekend or King County holiday, the county states that payment is due the next business day. Confirm the live account before paying.

How do I appeal a King County property assessment?

File a separate petition for each parcel with the King County Board of Appeals and Equalization. The deadline is the later of July 1 of the assessment year or 60 calendar days after the valuation notice was mailed. Appeals may be filed online or by mail, but not by email.

Where can I search King County deeds and liens?

Use the King County Recorder’s Landmark system. It supports searches by name, document type, parcel ID, recording number, recording date, legal description, book and page, consideration or Torrens number.

How far back do King County online deed records go?

Landmark indexes recorded documents from 1976 to the present. Images of most documents are available online from August 1, 1991 forward. Earlier documents and some older images must be researched through King County Archives.

Are King County Parcel Viewer lot lines legally exact?

No. King County identifies Parcel Viewer lot lines as approximate and not for legal use. Use recorded deeds, plats, surveys and a licensed surveyor when exact property boundaries matter.

Who qualifies for the King County senior or disabled property-tax exemption?

For 2024 through 2026 taxes, basic requirements include owning and occupying the principal residence, meeting the age, disability or qualifying veteran requirement, and having household income after eligible deductions of $84,000 or less.

Information checked August 6, 2026: Assessor and Recorder responsibilities, eReal, Parcel Viewer, eSales, GIS tools, office contacts, 2026 tax dates, payment methods, Recorder coverage, Archives access, appeal deadlines, exemption requirements and income limits were checked against official King County sources.
Independent guide: CountyAuditors.org is not the King County Auditor, Department of Assessments, Recorder, Treasury Operations, KCGIS, Board of Appeals and Equalization or King County Archives. Confirm live balances, filing deadlines, recorded documents, boundary information and eligibility with the responsible public office.
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.

Leave a Comment