Mason County Auditor Property Search, Records & Maps

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Mason County, Washington · TaxSifter, GIS, taxes, deeds and appeals

Find Mason County Parcels, Taxes, Maps and Recorded Documents

Use Mason County TaxSifter to search a property by owner, address or parcel number and review assessed value, land, improvements, taxes and account information. Use the Auditor Recording Department when you need the actual deed, lien, easement, survey, plat or other recorded document.

This guide explains which office handles each task, how to fix a failed search, what the parcel fields mean, how to pay 2026 taxes, how to use the GIS map safely and how to prepare an exemption or valuation appeal.

Get the quick answer Follow parcel-search steps Find a deed or survey
Choose the correct office before starting. The Assessor maintains parcel ownership displays, maps and assessed values. The Treasurer bills and collects property taxes. The Auditor records deeds, liens, easements, plats and surveys.

Quick answer: where should you search?

Use TaxSifter for property, assessment and tax information. Use the Parcel Map Viewer for GIS context. Use the Auditor’s recorded-document system for deeds, liens and surveys. Use Paydici when you are ready to view or pay the actual tax bill.

1 Search broadly Start with one owner, address or parcel detail.
2 Verify the parcel Match its number and physical location.
3 Save the record Keep value, tax and document clues.
4 Finish with the right office Assessor, Treasurer, Auditor or BOE.

Mason County property facts

Parcel system TaxSifter
Parcel map Mason County GIS Viewer
Assessor Patti McLean
Assessor phone 360-427-9670 ext. 491
Tax information Ext. 475
Recording Ext. 467
BOE Clerk Ext. 268
First-half tax April 30
Second-half tax October 31
Main campus 411 N. 5th St., Shelton

On TaxSifter, accept the county disclaimer and search with the simplest reliable information you have. Open the complete account, confirm the parcel number and physical location, and then move to the payment, GIS or recording tool.

Open official TaxSifter Open official parcel map

Choose the property task you need to complete

Use the section matching the question you are trying to solve.

Office-routing guide

Assessor, Treasurer, Auditor or Board of Equalization?

Correct Mason County office for each property task
What you need
Correct office or tool
What it provides
Important limit
Owner display, parcel number or assessed value
Assessor / TaxSifter
Owner, address, land, building, valuation and assessment data.
The displayed owner is not a legal title opinion.
Tax statement, balance or payment
Treasurer / Paydici
Tax bills, balances, payments, delinquency and receipts.
The Assessor does not post tax payments.
Parcel location or map layers
GIS Parcel Map Viewer
Tax-parcel outlines, assessment data, aerial and map context.
A GIS line is not a surveyed boundary.
Deed, lien, easement, plat or survey
Auditor Recording
Recorded-document indexes, images, copies and recording services.
Recording staff cannot provide legal advice.
Real-estate excise-tax affidavit
Treasurer REETSifter
Affidavit images searchable by statement, parcel, parties or address.
It is not a complete ownership or lien search.
Challenge an assessed value
Board of Equalization
Independent review of valuation and certain exemption disputes.
The Board does not change voter-approved tax levies.
Senior, disabled or veteran relief
Assessor
Applications, income review, status changes and renewals.
Relief is not automatic.
Open-space, farm or forest valuation
Assessor current-use staff
Applications and ongoing programme administration.
Removal or disqualification can create additional tax.
Best workflow: Find the parcel in TaxSifter, copy the parcel number and use that identifier in every later map, payment, deed, exemption or appeal task.
Search troubleshooting

No Mason County parcel result found?

Owner search failed Search the surname alone, then try a trust, estate, business, spouse or former owner.
Full address failed Keep the house number and main road word while removing direction, suffix and unit details.
The parcel is rural or waterfront Use the GIS viewer and search nearby parcels, roads, coves, lakes or subdivisions.
The property recently sold Search the seller, then check the Auditor’s grantor and grantee indexes.
The land was divided Search the parent parcel, seller, developer or previous parcel number.
Two parcels were combined Search each former parcel and contact Assessor mapping staff.
The structure is newly built Search the land parcel while the new-construction assessment is being processed.
The account is business personal property Use the Assessor’s business-personal-property resources rather than ordinary real-property expectations.

Prepare this before contacting the Assessor

Complete physical address
Current and former owners
Old or possible parcel number
Approximate purchase date
Subdivision or legal-description clue
Nearby road, lake or intersection
Description of the failed search
Reason the record is needed
Assessor call script “I am trying to identify the parcel at [physical address or location]. The current or previous owner may be [name], and I have [old parcel number, subdivision, deed or nearby road]. Can you confirm whether the parcel was transferred, segregated, combined, renumbered or listed under another address?”
Call 360-427-9670 ext. 491 Open Assessor contact page
Parcel-field decoder

Understand the Mason County property account

Common TaxSifter and GIS fields explained
Field
What it means
Practical next action
Parcel or PIN
The county identifier assigned to the parcel.
Use it for taxes, maps, recording research and appeals.
Owner name
The ownership name currently displayed by the Assessor.
Use the recorded deed for legal ownership verification.
Situs address
The physical property location associated with the parcel.
Compare it with GIS and the recorded legal description.
Mailing address
The address used for property or tax correspondence.
Do not confuse it with the parcel’s physical location.
Market land value
The Assessor’s market value attributed to the land.
Check acreage, access, zoning, waterfront and current-use status.
Market building value
The value attributed to structures and improvements.
Verify building size, condition, grade and outbuildings.
Total assessed value
The value used in the property-tax system after applicable classifications.
Confirm the assessment year connected with the value.
Tax code
The combination of taxing districts affecting the parcel.
Use it to understand which levies appear on the bill.
Exempt status
Indicates whether an exemption or exempt ownership may affect the parcel.
Confirm the programme and tax year with the Assessor.
Legal description
A summary identifying the land, lot, tract or subdivision.
Use the recorded deed or plat for the complete legal description.
Resulting tax
Tax-related amount associated with the parcel data.
Use the Treasurer account for the live amount legally due.
Property information is not a title report. TaxSifter and GIS are research tools. Use recorded documents and qualified title or legal assistance for a purchase, loan, inheritance, lien or ownership decision.
Assessment-year guidance

Understand Mason County’s current assessed values

Mason County announced that its 2026 assessed values were certified and made available through TaxSifter. Those values reflect market conditions as of January 1, 2025, based primarily on 2024 and earlier sales, with new construction assessed as of July 31, 2025.

Valuation standard

Washington requires real property to be appraised at 100% of true and fair market value.

Primary value date

January 1, 2025 for the certified 2026 assessment.

New construction date

New construction was considered through July 31, 2025 for that cycle.

Why the latest value may differ from the current bill

Assessment and collection years differ Washington values are normally established before the taxes based on those values are collected.
Tax districts set levies separately The Assessor establishes value; taxing districts establish budgets and levy requests.
Exemptions affect taxable amounts Senior, disabled, nonprofit, current-use or other programmes can change taxable value.
Account corrections can occur Manifest errors, destroyed property, omitted property, segregations, combinations or appeal orders can change a certified value where legally authorised.

Check these property facts

Land area and parcel configuration
Waterfront or access characteristics
Building square footage
Year built and condition
Basement and finished area
Garages and outbuildings
Recent additions or demolition
Current-use or forest classification
Physical inspections: Washington law requires real property to be physically inspected at least once every six years. County field appraisers may conduct exterior measurements and photographs while wearing county identification.
Read appraisal and assessment guidance Check the certified value
2026 payment guide

Mason County property-tax deadlines and payment steps

First-half deadline April 30, 2026

This deadline has passed.

Second-half date October 31, 2026

The statutory date falls on Saturday.

Next business day November 2, 2026

Washington law treats this as timely.

County rule No ordinary grace period

Use the correct legal payment date.

Installment rule: Annual taxes of $50 or more may generally be divided into two installments. The first half must be paid on time to preserve the ordinary second-half installment treatment.

Search the bill in Paydici

Open the county-linked Paydici portal Make sure the header identifies Mason County, Washington Treasurer.
Choose Property Taxes Do not select an unrelated utility or county payment category.
Search by parcel, name or address Parcel format resembles 12345-67-89123; name format is generally last name followed by first name.
Open the matching account Confirm the property address, taxpayer, parcel and tax year.
Review the amount and installments Check whether the first half, second half, full year, interest or other charges are displayed.
Choose the payment method Compare the processor fee before entering banking or card details.
Save the payment ID The county identifies the payment ID as the confirmation receipt.
Recheck account posting Electronic payments are not posted the same day and funds can take up to three business days to reach the Treasurer.

Electronic-payment fees

Mason County Treasurer payment charges
Payment method or issue
Published charge
Practical note
Credit card
2.5%, minimum $2
Compare the percentage fee before paying a large bill.
Debit card
$3.95 flat fee
Available through supported processor routes.
E-check
$1.55 flat fee
Verify routing and account numbers carefully.
Returned payment
$40
The payment is voided and taxes can become subject to delinquent charges.
Phone card payment
Convenience fee applies
E-check and Visa Debit are not offered through the automated telephone route.

Other payment routes

Mail
Mason County Treasurer
P.O. Box 429
Shelton, WA 98584-0429

The United States Postal Service cancellation mark determines timeliness. Mail three to five days early.

In person
411 N. 5th Street
Building 1, Floor 2
Shelton, WA 98584

Office hours are Monday–Friday, 9:00 a.m.–4:00 p.m., excluding county holidays.

Certified funds may be required. Mason County requires certified funds for delinquent accounts subject to personal-property distraint or real-property tax foreclosure.
Treasurer call script “I am calling about parcel [parcel number] at [address] for tax year 2026. Can you confirm the current balance, the payment deadline that applies, whether any payment has posted, the accepted payment method and any interest or costs?”
Search and pay property taxes Review fees and payment methods Call 360-427-9670 ext. 475
Parcel Map Viewer

Use Mason County GIS without treating it as a survey

Mason County’s map viewer connects tax-parcel outlines with available assessment, ownership, acreage, situs, subdivision and valuation data. Parcel labels become more useful after zooming closer than the countywide view.

Use the parcel map step by step

Find the parcel in TaxSifter first Copy the parcel number so the map search does not depend on an uncertain rural address.
Open the official Parcel Map Viewer Allow the interactive map to load completely.
Search or zoom to the parcel Tax parcels may require zooming closer before boundaries and PIN labels become visible.
Turn on only the layers you need Review parcels, aerials, critical areas, districts or other relevant context without obscuring the base map.
Click the parcel Match the PIN, owner, situs, acreage and assessed values with TaxSifter.
Move to the recorded deed or survey Use legal documents when the precise boundary or ownership right matters.
GIS is useful for
  • Locating rural, forest or waterfront property
  • Reviewing surrounding parcels
  • Finding situs and subdivision context
  • Checking available environmental layers
  • Understanding tax-code or district geography
GIS cannot prove
  • Exact surveyed boundaries
  • Legal ownership
  • Whether an easement remains valid
  • Buildable area or setbacks
  • Clear or marketable title
Waterfront and forest-land warning: Shorelines, critical areas, access, timber classifications and parcel boundaries can involve separate legal or regulatory questions. Do not make a purchase or development decision from a GIS screenshot alone.
Open Parcel Map Viewer Open GIS help and downloads
Auditor Recording Department

Find deeds, liens, easements, surveys and plats

Mason County’s Auditor records documents affecting real property and maintains them as permanent public records. Documents must be recorded in the county where the land or any portion of the land is situated.

Search recorded documents

Open the public recording system Choose the Public Login option; indexed information and available images are open to public users.
Choose the strongest search clue Use a document number when known, or begin with a grantor, grantee or combined party-name search.
Enter names last name first Basic name searches expect the surname before the first name.
Use the wildcard when spelling is uncertain An asterisk can replace one or more unknown characters, such as “Ander*”.
Add a date range or document type Narrow results to deeds, deeds of trust, liens, releases, easements, surveys or other relevant documents.
Use subdivision, block and lot when available This can connect documents with a specific plat or lot when names are common.
Use Find Related Related searching can locate documents referencing the selected document or sharing legal-description information.
Request a certified copy when required Ask the lender, title company, court or agency whether an online image is sufficient.

Grantor and grantee decoder

Which party field should you search?
Document situation
Grantor search
Grantee search
Property sale
Seller or transferring owner
Buyer or receiving owner
Quitclaim deed
Person giving up an interest
Person receiving the interest
Deed of trust
Borrower or trustor
Lender, beneficiary or trustee as indexed
Lien
Property owner or debtor may appear here
Claimant or lienholder may appear here
Release or reconveyance
Releasing party may be indexed here
Affected owner or borrower may appear here

Current common recording costs

Common fees shown in the county-linked recording schedule
Document or service
Common published amount
Important note
Standard document
$303.50 first page
$1 for each additional page; verify the current schedule before submitting.
Deed of trust
$304.50 first page
$1 for each additional page.
Certified copy
$3 first page
Additional pages are commonly $1 each.
Regular copy
$1 first page
Confirm delivery and image charges.
Nonstandard emergency recording
$50 additional
A county cover sheet and page charge may also apply.
Always verify the final fee. Recording charges depend on the document type, number of transaction titles, page count and statutory surcharges. Recording staff cannot prepare a deed or decide which legal document you need.

Free Fraud Notify service

Open the recording system Select the Fraud Notify option.
Register name variations Include your legal name, former name, trust or business name where relevant.
Add the parcel number Parcel-based alerts can capture documents that do not use the expected name format.
Verify the email Contact the Recording Department if the verification message does not arrive.
Review every alert promptly The alert identifies a recording; it does not determine whether the document is fraudulent.
Auditor

Steve Duenkel

Recording phone

360-427-9670 ext. 467

Office hours

Monday–Friday, 9:00 a.m.–4:00 p.m.

Search recorded documents Review recording instructions and fees
Real-estate excise-tax research

Search Mason County REET affidavits

REETSifter provides image attachments for available real-estate excise-tax affidavits. It is useful when you need a transfer statement or affidavit clue, but it does not replace the recorded deed or a complete title search.

Search REETSifter step by step

Choose one search field Use all or part of the statement number, parcel number, grantor, grantee or street address.
Start broadly Use a surname, partial statement number or simplified address.
Add a date range Narrow the search around the approximate transfer date.
Compare the parties and parcel Confirm that the affidavit relates to the correct property transaction.
Select View Open the available affidavit attachment in a new window.
Move to Auditor Recording Use the grantor, grantee and date to find the recorded deed or related instrument.
Open official REETSifter Search the recorded deed
Board of Equalization

Challenge an incorrect Mason County value

First contact the Assessor and speak with an appraiser. Many disagreements involving square footage, improvements, condition or comparable properties can be resolved before a formal appeal.

Appeal deadline: A petition must generally be filed by July 1 of the assessment year or within 30 days of the date on the Assessor’s Change of Value notice. The applicable 30-day notice deadline may remain available even when July 1 has passed.

Review these facts first

Parcel and legal-description details
Land acreage and waterfront characteristics
Building square footage
Year built and condition
Basement and finished area
Garages and outbuildings
Recent arm’s-length sale
Comparable market sales
Damage or demolition
Current-use or exemption decision

Prepare the petition correctly

Confirm the assessment year Identify the exact Change of Value notice being appealed.
Contact the Assessor Ask an appraiser to explain the parcel facts, market area and valuation method.
Use the current BOE petition Download the form or use the county’s online-submission option.
State the requested value Explain why the assessor’s market value is incorrect.
Attach focused evidence Use a sale, appraisal, comparable sales, photographs, measurements, inspection or repair evidence.
File before the applicable deadline Do not wait for additional tax information when the valuation deadline is approaching.
Keep proof of filing Save the online confirmation, stamped copy or delivery evidence.

Evidence matched to the issue

Useful valuation evidence
Issue
Useful evidence
Weak approach to avoid
Recent purchase
Closing statement, sale agreement, deed and transaction conditions.
Using only a commercial website estimate.
Incorrect building data
Measurements, floor plans, permits and photographs.
Saying the card is wrong without identifying the field.
Poor condition or damage
Dated photographs, inspections and repair estimates.
Ordinary maintenance claims without cost evidence.
Comparable sales
Similar arm’s-length sales near the valuation date.
Selecting only the lowest nearby prices.
Waterfront or rural land
Access, shoreline, topography, utilities, survey and comparable land sales.
Comparing unlike waterfront and non-waterfront tracts.
BOE call script “I am reviewing parcel [parcel number] and a Change of Value notice dated [date]. I believe the assessed value is incorrect because [specific evidence]. Can you confirm my filing deadline, the current petition, accepted submission methods and required supporting documents?”
BOE Clerk

Tenielle Masteller

Phone

360-427-9670 ext. 268

360-490-8439

Office
423 N. 5th Street
Building 9
Shelton, WA 98584
Open Board of Equalization Review Assessor appeal guidance
Exemptions, deferrals and current use

Check Mason County property-tax relief programs

Senior, disabled and disabled-veteran exemption

Potential qualifying categories
  • Age 61 or older by the required date
  • Retired from regular employment because of disability
  • Veteran with at least an 80% service-connected rating
  • Veteran receiving compensation at the 100% service-connected rate
  • Qualifying surviving spouse or domestic partner under state rules
Property and income requirements
  • Own and occupy a Washington primary residence
  • Meet the applicable combined-disposable-income threshold
  • Submit income and eligibility evidence
  • Report changes in income, ownership or residency
  • Complete required county renewals
2024–2026 threshold: Mason County’s current programme page lists $55,000 as Income Threshold 3 for the exemption programme covering the 2024–2026 period.

Published Mason County thresholds for 2027–2029

Future county-specific income thresholds
Threshold
Published amount
How it is used
Income Threshold 1
$53,000
Highest exemption benefit level for qualifying participants.
Income Threshold 2
$61,000
Intermediate exemption benefit level.
Income Threshold 3
$70,000
Maximum income level for exemption-program eligibility.
Senior or disabled deferral
$78,411
Maximum published county deferral threshold for the period.
Use the threshold for the correct tax year. Do not apply a 2027 programme threshold to a 2026 application or eligibility decision.

Renewal deadline that has passed

Mason County mailed 2026 senior and disabled exemption renewal applications to programme recipients in Inspection Areas 3 and 6. Those renewals and income verification were due July 1, 2026. A recipient who missed that date should contact the Assessor immediately rather than assuming the exemption will continue automatically.

Other relief programmes

Additional Mason County property-tax programmes
Program
Potential benefit
Important requirement
Senior or disabled deferral
State pays qualifying property taxes and special assessments as a secured deferral.
Applicant must meet age or disability, income, residence and equity rules.
Limited-income deferral
Can defer the second-half October installment.
Application is generally due September 1 and income, ownership and equity rules apply.
Veteran widow or widower grant
Provides qualifying property-tax assistance that may not require repayment.
Military-death, age or disability, remarriage and income rules apply.
Physical improvement exemption
Can temporarily exclude qualifying home-improvement value.
Application timing and improvement limits apply.
Current Use
Reduced assessment for qualifying open-space, farm, agricultural or forest land.
County lists a nonrefundable $600 application fee per parcel.
Current-use removal warning: Sale, conversion or removal from open-space, farm, agricultural or forest classification can create additional tax, interest or other financial consequences. Review the programme before changing the use or ownership.
Review Mason County relief programs Check 2027–2029 state thresholds Open Assessor forms
Business personal property

Late 2026 personal-property returns

Mason County mailed 2026/2027 business personal-property returns in January 2026. The returns report equipment and ownership as of January 1, 2026 for taxes payable in 2027.

The April 30, 2026 filing date has passed. Mason County says late listings incur a monthly penalty equal to 5% of the tax due, up to a maximum of 25%.

Correct a late or missing filing

Open the business-personal-property account Confirm the business name, location and account information.
Prepare the January 1 equipment list Include machinery, furniture, fixtures, tools and other taxable business property.
Include acquisition details Report purchase year, original cost, disposal and ownership information as requested.
File immediately Use eFile, email, mail or the county drop box rather than allowing additional monthly penalties.
Ask for the calculated penalty Do not estimate the tax-based penalty without county confirmation.
Open Personal Property eFile Review personal-property guidance
Ownership and mailing updates

Send each record change to the correct office

Who handles each property-record change?
Change needed
Correct office
What to prepare
Tax-statement mailing address
Treasurer
Parcel number, old address and complete new mailing address.
Legal ownership after sale
Auditor Recording, then Assessor update
Properly executed deed and required transfer documents.
Incorrect owner display
Assessor
Parcel number, recorded document number and explanation.
Parcel segregation or combination
Assessor mapping
Existing parcels, deed, survey, plat and project information.
Exemption income or residency status
Assessor exemptions
Status-change form and supporting documentation.
Mortgage or escrow information
Treasurer or mortgage company
Parcel, lender, loan and escrow information.

Update the tax-statement mailing address

Find the parcel number Mason County requires the tax parcel number on address-change requests.
Choose a submission route List the change on the property-tax statement coupon, mail a written request or email the Treasurer.
Provide the complete address Include recipient name, street or post-office box, city, state and ZIP code.
Verify the next tax statement Confirm that the new address appears on the next bill.
A mailing-address change is not a deed. Updating where the bill is sent does not transfer ownership or change the legal title.
Review mailing-address instructions Contact the Assessor about ownership
Contact and visit planning

Mason County property contacts

Call the office that can complete the task
Office
Use it for
Contact
Address and hours
Assessor
Property search, assessed value, maps, ownership displays and relief programmes.
360-427-9670 ext. 491
411 N. 5th St., Building 1, Floor 2
P.O. Box J, Shelton, WA 98584
Monday–Friday, 9 a.m.–4 p.m.
Treasurer
Tax bills, payments, delinquency, foreclosure and mailing address.
Tax information: ext. 475
Treasurer profile: ext. 479
411 N. 5th St., Building 1, Floor 2
P.O. Box 429, Shelton, WA 98584
Monday–Friday, 9 a.m.–4 p.m.
Auditor Recording
Deeds, liens, easements, plats, surveys, copies and Fraud Notify.
360-427-9670 ext. 467
411 N. 5th St., Shelton, WA 98584
P.O. Box 400, Shelton, WA 98584
Monday–Friday, 9 a.m.–4 p.m.
Board of Equalization
Valuation and authorised exemption appeals.
360-427-9670 ext. 268
360-490-8439
423 N. 5th St., Building 9
Shelton, WA 98584
Mail: 411 N. 5th St.

Prepare this for any property call

Parcel number
Physical property address
Owner or taxpayer name
Assessment or tax year
Recording-number clue
Form or programme name
Short description of the problem
Supporting document or evidence
Universal property call script “I am contacting you about parcel [parcel number] at [physical address]. I need help with [search, value, tax payment, deed, map, exemption or appeal]. The public record currently shows [brief fact]. Which official tool, form or department should I use next?”
Legal and accuracy limits

What the online records cannot prove

Online records are useful for
  • Identifying a parcel
  • Reviewing values and taxes
  • Locating map and document references
  • Finding transfer and REET clues
  • Preparing questions for county staff
Get additional verification for
  • Legal ownership and title
  • Exact property boundaries
  • Unreleased liens or easements
  • Shoreline, zoning or building approval
  • Purchase, lending or legal decisions
Responsible-use warning: Do not identify, accuse or contact a person from a same-name property result alone. Verify the parcel and use public records lawfully.
Ten practical answers

Mason County property search FAQs

Where can I search Mason County Washington property records?

Use Mason County’s official TaxSifter property and parcel search. It combines Assessor property information with Treasurer tax information. Search with an owner name, property address or parcel number and verify the physical location before relying on a result.

Does the Mason County Auditor maintain assessed property values?

No. The Mason County Assessor maintains parcel ownership displays, maps and assessed values. The Treasurer handles property-tax bills and payments. The Auditor records deeds, liens, easements, surveys, plats and other legal documents.

How do I search Mason County property by owner or address?

Begin with the owner’s last name or the house number and main road name. Add more details only if the results are too broad. Remove punctuation, road suffixes, directional letters and unit information if an exact search returns no result.

Why can I not find a parcel in Mason County TaxSifter?

The parcel may be listed under a previous owner, trust, business, parent parcel or different address format. A new construction record, segregation, combination or recent transfer may also be processing. Search with fewer fields, use the GIS map and contact the Assessor if the parcel remains unclear.

When are Mason County property taxes due in 2026?

The first half was due April 30, 2026. The second-half statutory date is October 31, 2026. Because that date falls on Saturday, Washington’s next-business-day rule treats Monday, November 2, 2026 as timely. Confirm the payment method and account balance with the Treasurer.

Are Mason County GIS parcel lines legal boundaries?

No. TaxSifter and GIS parcel lines help locate property but do not replace the recorded deed, subdivision plat, survey or a professional boundary determination.

Where can I find a Mason County deed, lien or survey?

Use the Mason County Auditor Recording Department’s public records system. You can search by grantor, grantee, document number, document type, date range or subdivision. The Auditor also records surveys, plats, short plats and large-lot subdivisions.

How do I appeal a Mason County assessed value?

First discuss the parcel facts and valuation with the Assessor. A formal Board of Equalization petition is generally due by July 1 of the assessment year or within 30 days of the date on the Assessor’s Change of Value notice.

Who may qualify for Mason County senior or disabled property-tax relief?

Potential applicants include qualifying homeowners age 61 or older, people retired from employment because of disability and certain disabled veterans. The home must be the primary residence and county-specific income limits apply.

How do I update the mailing address for a Mason County tax statement?

Submit the request to the Mason County Treasurer and include the tax parcel number. The county allows the change to be listed on a tax-statement coupon or submitted by written request or email. A mailing-address change does not transfer legal ownership.

Information checked August 6, 2026: TaxSifter and GIS links, office roles and contacts, certified values, 2026 tax dates, payment fees, recording-search features, Fraud Notify, appeal deadlines, exemption renewals, income thresholds, current-use fees and personal-property filing information were checked against Mason County and Washington State official sources.
Independent guide: CountyAuditors.org is not the Mason County Auditor, Assessor, Treasurer, GIS Department or Board of Equalization. Confirm live balances, appeal deadlines, recording fees, programme eligibility and legal-document requirements 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.

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