Lake County IL Assessor Property Search 2026: Owner, PIN & GIS

Lake County, Illinois • owner, address, PIN, tax & GIS lookup

Find the Right Lake County Property Record

Search Lake County, Illinois property information by owner, street address or Property Index Number, then use the correct county tool for assessment values, tax bills, GIS maps, exemptions, assessment appeals or recorded deeds.

This 2026 guide explains the portal’s strict search rules, the Illinois two-year tax cycle, current township appeal dates, SmartFile evidence requirements, September tax deadline, exemption workflows and what to do when the property record does not match what you expected.

Property lookup Public county search Owner, address, PIN, assessment, exemption and tax information.
Benton & Ela appeals Due Aug. 24, 2026 Other township filing dates must be checked on the live county schedule.
2025 taxes payable 2026 2nd half due Sept. 4 The first installment was due June 4, 2026.
Senior Freeze 2026 July 31 deadline passed This freeze affects taxes payable in 2027.

Fast Answer: Where Do I Search Lake County IL Property Records?

Use the official Lake County Property Tax Information portal for a normal property search. The portal accepts one search parameter at a time: Parcel ID/PIN without dashes, owner name in Last Name–First Name format, or address number plus street name without direction. The same system connects assessment and tax information, but different Lake County offices control different parts of the record.

Independent-site notice: AssessorPropertySearch.org is not Lake County, a township assessor, the Lake County Treasurer or the County Clerk. Never send this website a tax payment, appeal evidence, Social Security number or exemption application.

Make Sure You Mean Lake County, Illinois

“Lake County assessor property search” is ambiguous because several U.S. counties share the Lake County name. This page is specifically for Lake County, Illinois.

This page: Lake County, IL

Use this guide for Waukegan and other Lake County, Illinois properties, Illinois PINs, township assessments and Lake County IL taxes.

Not Lake County, Indiana or Florida

Those counties use different assessment, tax and mapping systems. Do not enter an Indiana or Florida parcel into the Illinois portal.

Not Salt Lake County, Utah

Salt Lake County is a separate Utah jurisdiction. “Salt Lake County assessor property search” should not land on an Illinois record.

Which Lake County Property Office Handles Your Task?

Illinois property assessment, township assessment, tax collection and recorded-land documents are related but handled by different offices.

A

Assessment, exemption or PIN question

Start with the Chief County Assessment Office or your township assessor for assessed value, property characteristics, exemptions, SmartFile help and assessment corrections.

Official Lake County Chief County Assessment Office Assessment Office
$

Tax bill, payment or receipt

Use the Treasurer for current tax bills, installment payments, penalties, payment posting, partial payments and receipt questions.

Official Lake County Treasurer Property Tax Payment Help
G

Parcel map or GIS context

Use the Tax Parcel Viewer to visualize parcel location, nearby parcels and cadastral information after you identify the correct PIN.

Official Lake County GIS Tax Parcel Viewer
D

Deed, mortgage, lien or recorded document

Use the County Clerk Recording Division for recorded real-estate documents. An assessor owner field is not a guaranteed title search.

Official Lake County Clerk Recording Division Recording Division

How to Search Lake County Property Records

Follow this sequence because the official portal warns that combining several search parameters can prevent a valid result from appearing.

Open the official Lake County property portal

Start with the county Property Tax Information system rather than a paid property-report or people-search site.

Choose only one search method

Search with Parcel ID/PIN, owner name or property address. Do not enter owner, PIN and address together on the same first search.

Format the search correctly

Enter a PIN without dashes, owner as Last Name then First Name, or address number plus street name without a direction.

Open the correct result

Compare address, municipality, township, owner or taxpayer information and PIN before relying on a record.

Check the assessment year and pay year

Lake County follows Illinois’ two-year property-tax cycle, so an assessment year and the year its taxes are payable may differ.

Save the PIN before moving to another tool

Use the exact PIN for later tax, GIS, exemption, comparable-property and appeal research.

What a Lake County IL Property Record Shows

Field
What it helps you check
Important limitation
PIN / Parcel ID
Exact property identification across assessment and tax records.
A divided or consolidated parcel may receive a new PIN.
Owner / taxpayer name
Shows the taxpayer information published in the county property record.
Not a guaranteed title opinion.
Property address
Confirms physical property location.
May differ from billing or mailing address.
Township
Identifies the local assessment office and the relevant appeal-publication schedule.
Appeal deadlines differ by township.
Assessment year
Identifies the year of the assessed valuation.
It may not equal the year the resulting tax bill is payable.
Assessed value
Helps evaluate assessment and appeal questions.
It is not the tax bill itself.
Exemption history
Shows exemptions associated with the parcel for available tax years.
A new PIN or pending application may require separate review.
Tax information
Can display amount, installment, payment and interest information.
Payment and collection questions belong to the Treasurer.
Tax districts
Shows government units connected with the tax calculation.
The Chief County Assessment Office does not set each taxing body’s tax rate.
Two-year Illinois cycle: the county’s property system explicitly warns that its offices can operate on different years. For example, Tax Year 2025 is payable in 2026. Always check the selected year before deciding that an amount is wrong.

Lake County Assessor Property Search Map and GIS

The Tax Parcel Viewer is the best visual companion to an owner/address/PIN search. Identify the parcel first, then use the map to understand its location and nearby cadastral context.

Search address / owner
Confirm exact PIN
Open PIN in parcel viewer

Use the Tax Parcel Viewer for

  • Parcel location and visual confirmation.
  • Nearby parcels and road context.
  • Subdivision and condominium context.
  • Address labels and parcel-related mapping.
  • Historic tax-map and survey-related layers when available.

Do not use GIS as

  • A legal property-boundary survey.
  • Engineering-design data.
  • A final regulatory determination.
  • A guaranteed basis for a financial commitment.
  • A substitute for a licensed Illinois land surveyor.
Official map disclaimer: Lake County says the Tax Parcel Viewer is for general reference. For the precise location of boundaries on the ground, consult an Illinois Registered Land Surveyor.
Official Lake County Tax Parcel Viewer Open Tax Parcel Viewer

Lake County Property Assessment Appeal: Current 2026 Deadlines

There is no single June or September deadline for all Lake County assessment appeals. The deadline is tied to the publication of assessments for the property’s township, and the Board gives a 30-day filing window.

Verified August 12, 2026: the county’s current filing table shows Benton Township and Ela Township assessments published July 23 with a final appeal filing date of August 24, 2026. Final dates for the other townships were not yet populated on the county table when this guide was verified.
Township
2026 publication date currently posted
Final filing date currently posted
Benton
July 23, 2026
August 24, 2026
Ela
July 23, 2026
August 24, 2026
Other Lake County townships
Check live county schedule
Do not guess; confirm the published township date.
Do not wait for the tax-bill due date. A property-value appeal is tied to the assessment publication, not the September property-tax installment deadline.

2026 is not a general assessment year

The official 2026 Board rules explain that Lake County is not in a general assessment year. Assessments from 2023 are generally carried through 2026 subject to equalization and changes that are otherwise authorized.

Official Lake County filing deadline table Check Township Deadline

How the 2026 Lake County Assessment Appeal Works

Read the assessment notice and property record

Confirm the PIN, assessment, property characteristics, township and exact filing deadline.

Contact the township assessor first

Lake County recommends discussing the assessment or factual error with the township assessor before filing, but those discussions do not extend the appeal deadline.

Choose the correct appeal basis

Examples include incorrect property data, recent arm’s-length sale, fair cash value, comparable-property evidence or another valid assessment issue.

Prepare required evidence

Gather the applicable comparable grid, sale documents, appraisal, property record card, photos, repair documents or other evidence supporting the requested assessment.

File through SmartFile before the township deadline

All 2026 assessment appeals must be electronically filed through Lake County’s SmartFile system with the required filing information and evidence.

Save confirmation and monitor the case

Keep the submission confirmation, review hearing communications and meet any supplemental evidence or rebuttal deadlines.

Do not file at the last minute: Lake County warns that SmartFile depends on electronic systems whose uninterrupted availability cannot be guaranteed. Filing deadlines are not extended simply because the online system becomes unavailable.
Official Lake County online appeal filing Open Appeal Instructions

2026 Board of Review Evidence Rules You Should Know

Lake County’s 10-page 2026 Board rules contain several requirements that are easy to miss if you only look at the SmartFile login page.

Rule
What it means for the filer
SmartFile is mandatory
All 18 townships use electronic Board of Review filing for 2026.
Multiple PINs for one subject property
They must be filed as one case; the Board rules state a maximum of 400 parcels per case.
Evidence at filing
The Board requires the appeal application and evidence when the case is filed.
Supplemental documentary evidence
Generally must be submitted at least five business days before the hearing unless an exception in the rules applies.
Rebuttal evidence
Must be uploaded no later than 48 hours before the scheduled hearing.
$100,000+ assessed-value reduction
A requested total assessed-value reduction of $100,000 or more triggers statutory taxing-district notification requirements.
Incomplete filing
The rules describe a 10-business-day remedy period for notified errors or omissions.
Case documents become public
Redact personal email addresses, phone numbers, Social Security numbers and other unnecessary sensitive information before upload.
Privacy warning: Lake County says appeal-case documents will be published to its Public Access website. Review every uploaded PDF, image and exhibit for sensitive personal information first.

Six townships use a special comparable-grid workflow

For properties in Cuba, Ela, Grant, Libertyville, Shields and Vernon townships, the 2026 Board rules say the SmartFile appeal relies on the comparable-property grid available through the respective township assessor’s system rather than the standard county grid workflow used by most townships.

County-page wording issue: one Lake County web page calls these “five townships” while listing six names. The official 2026 Board rules clearly list all six, so this guide follows the PDF’s actual list.
Official 2026 Lake County Board of Review Rules PDF Read 2026 Board Rules

Build Strong Evidence for a Lake County Assessment Appeal

Incorrect property data

  • Property record card.
  • Clear statement identifying the incorrect field.
  • Survey or construction records when relevant.
  • Date-stamped photos for condition problems.
  • Contractor estimates or paid invoices.
  • Applicable permits.

Recent purchase

  • Signed settlement statement or Closing Disclosure.
  • PTAX-203 where relevant.
  • Closed MLS / chronological listing history.
  • Documentation of any personal property included in the sale.
  • Explanation of whether the sale was arm’s-length.

Professional appraisal evidence

For 2026 fair-cash-value appeals, the Board rules say an appraisal should value the subject as of the January 1, 2026 lien date, be prepared by an Illinois-licensed appraiser, be signed and be presented in its entirety with its exhibits.

Late appraisal exception: if the appraisal was not attached to the original filing, the 2026 rules allow qualifying appraisal evidence to be received within 14 calendar days after the filing deadline for residential property or within 30 days for commercial property.

Comparable-property evidence

The Board says comparable sales should be near the subject property or in a sufficiently similar neighborhood, have characteristics similar to the subject, and have sale dates reasonably close to January 1, 2026.

How many?

The rules say at least three comparables are preferable. The county comparison grid supports five, and the Board says three to five can effectively present a case.

Compare what?

Location, style, construction, age, lot/building size, quality and physical condition should be meaningfully similar.

Use the correct grid

A non-county comparison format populated from another database can receive less weight than the Lake County Comparable Property Grid.

Board of Review Hearing Options and What Happens Next

In person

Available for 2026 Board hearings.

Zoom video

Lake County identifies Zoom as a recommended hearing option.

Telephone

A telephone appearance can be selected for eligible cases.

By evidence / letter

The Board can decide certain cases based on the documents submitted without live testimony.

Plan for a short presentation: the 2026 rules state most hearings are scheduled in approximately 15-minute intervals. Organize your evidence and requested assessment so the Board can understand the issue quickly.
Representation: individual owners or taxpayers can generally represent themselves. Corporations, LLCs, limited partnerships and similar entities must be represented before the Board by an Illinois-licensed attorney under the Board’s 2026 rules.

After the Board completes hearings for the township, official written decisions are issued. A written decision is important if the owner intends to pursue a qualifying appeal to the Illinois Property Tax Appeal Board.

Lake County Homestead Exemptions and 2026 Filing Status

Property-tax exemptions affect equalized assessed value. They are handled through the assessment system, not by the Treasurer’s payment office.

Exemption / relief
Main current Lake County point
General Homestead Exemption
Reduces EAV by $8,000 for qualifying owner-occupied principal residences. First-time applications use SmartFile EX01. No annual renewal is required under the county’s normal rules.
Senior Homestead Exemption
Reduces EAV by $8,000 and can be claimed in addition to General Homestead by qualifying owners age 65 or older.
Low-Income Senior Citizens Assessment Freeze
The 2026 filing deadline for taxes payable in 2027 was July 31, 2026. County guidance listed 2025 household income of $75,000 or less among the eligibility requirements.
Home Improvement Exemption
Can defer the assessment increase from a qualifying home addition or improvement for four years.
Veteran / disability relief
Lake County offers additional programs with category-specific qualification and documentation rules.

General Homestead application steps

  • Confirm that you owned and used the property as your primary residence as required for the tax year.
  • Have the correct PIN and property address.
  • Prepare proof of residency such as an accepted state identification document.
  • If the property is held in trust, prepare proof that the applicant is a current living beneficiary.
  • Open SmartFile and select Available Filings.
  • For a first-time homestead application, choose EX01 and complete the filing.
New PIN warning: Lake County specifically says exemptions do not transfer to a newly assigned PIN. If a parcel was divided, consolidated or otherwise received a new PIN, verify and reapply as required.
Turning 65 in 2026? Lake County says Senior Homestead applications can be filed at any time during the year in which the applicant turns 65, assuming the other eligibility requirements are satisfied.
Official Lake County tax-relief information

Lake County Property Tax Bill: Current 2026 Payment Dates

The bill being collected during 2026 is the 2025 real-estate tax bill payable in 2026. This is separate from a 2026 assessment appeal.

May 1, 2026 — tax bills mailed

Lake County’s current tax calendar lists May 1 as the mailing date.

June 4, 2026 — first installment due

The first installment deadline has passed.

August 5, 2026 — 4.5% first-installment penalty level

The county calendar lists a 4.5% statutory penalty level on the unpaid first installment beginning August 5.

September 4, 2026 — second installment due

This is the next major ordinary property-tax payment deadline as of this article’s August verification date.

September 5, 2026 — additional delinquency charges

The calendar lists 1.5% interest on the second installment and 6% on the first installment beginning September 5.

November 13, 2026 — tax sale

The current county calendar identifies November 13 as the 2026 tax-sale date for qualifying unpaid taxes.

Do not calculate a delinquent payoff yourself from an old bill. Open the current account or contact the Treasurer so the payment includes the correct statutory interest and fees for the actual payment date.
Official Lake County Real Estate Tax Calendar Check Current Tax Calendar

Online Property Tax Payment: Fees, Partial Payments and Posting

Payment detail
Current county rule
E-check
No additional payment-processing fee.
Credit card / PayPal
2.35% processing fee.
Debit card
1.5% processing fee.
Tax years payable online
Only the current tax year can be paid through the regular online system.
Partial payment
Accepted for current-year taxes; carefully select the amount being paid.
Online checkout
The county gives a 10-minute transaction window before the session times out.
Posting
Allow approximately three business days for processing and one to three business days for the account to reflect paid status.
Rejected / returned transaction
$25 fee.
Save the confirmation number and summary page. It should show the tax amount and any processor fee before you finish the transaction.

Paying by mail?

Lake County accepts properly timed U.S. postmarks for mailed payments. Its Treasurer warns that a metered-mail date is not treated the same as an official U.S. postmark for avoiding statutory late-payment penalties.

Official Lake County online property-tax payment information Review Online Payment Rules

Lake County IL Deed, Mortgage and Land Record Search

If your question is “who legally owns this property?” or “where is the recorded deed?”, move from the assessment portal to the County Clerk Recording Division.

Recorded land records include

  • Deeds.
  • Mortgages.
  • Liens.
  • Releases.
  • Recorded plats and other real-estate instruments.

What the Recording Division cannot do

The office says it cannot perform a guaranteed title search. Its staff can provide access to available records, but only a title company can perform and guarantee a full property-title search.

Current recording and copy costs

Document / service
Current published fee
Standard recorded document
$70
Non-standard document
$82
Federal/state lien or lien release
$43
Recorded-document copy
$1 per page
Plat copy
$5 per page
PTAX form copy
$1 per form
Need a plat of survey? The Recording Division says individual plats of survey are not normally submitted to its database. If you did not receive a survey at closing, you may need a professional land surveyor.
Official Lake County Recording Division Check Recording & Copy Fees

Lake County Property Search Not Working? Fix It Here

Problem
Likely cause
Best next step
Search returns zero results
You entered multiple parameters.
Clear the form and search only PIN, owner or address.
Address fails
Direction, suffix or unit formatting.
Use house number + street name without direction.
Owner search fails
Wrong name order, trust, entity or recent ownership change.
Use Last Name, First Name; try shorter wording or prior owner.
PIN fails
Dashes or an old/replaced PIN.
Remove dashes and verify whether the parcel received a new PIN.
Portal shows maintenance
Temporary county-system outage.
Wait and retry the official system rather than moving to an unknown payment or property site.
Assessment year looks wrong
Illinois two-year tax cycle.
Check both tax/assessment year and taxes-payable year.
Property owner looks outdated
Recent deed or tax-record update timing.
Check the recorded deed and contact the assessment office if necessary.
Tax payment is missing
Processing time, rejected e-check or wrong parcel.
Keep confirmation and contact the Treasurer with the PIN and transaction details.
Map boundary conflicts with fence
GIS is reference mapping rather than survey-grade boundary evidence.
Use recorded documents and a licensed Illinois surveyor.
Need a title search
Assessment and clerk search are being mistaken for guaranteed title research.
Use recorded records for research and a title company when a guaranteed title search is required.

Lake County Property Offices, Phones and Hours

Office
Use it for
Current contact details
Chief County Assessment Office
Assessment, property records, exemptions, SmartFile help and general assessment questions.
18 N County Street, 7th Floor, Waukegan, IL 60085
847-377-2050
Mon–Fri 8:30 a.m.–5:00 p.m.
Board of Review
Assessment appeal filing, hearing and Board procedures.
18 N County Street, 7th Floor, Waukegan, IL 60085
847-377-2100
Lake County Treasurer
Tax bills, payments, installment questions, penalties and payment status.
18 N County Street, Room 102, Waukegan, IL 60085
847-377-2323
Mon–Fri 8:30 a.m.–5:00 p.m.
County Clerk Recording Division
Recorded deeds, mortgages, liens, releases, plats and copies.
18 N County Street, 6th Floor, Waukegan, IL 60085
847-377-2575
Mon–Fri 8:30 a.m.–5:00 p.m.
GIS / parcel questions
Tax Parcel Viewer and GIS mapping questions.
GIS: 847-377-2388
Tax parcel/property questions: 847-377-2050

Assessment call script

“I am calling about PIN [number] in [township]. I need help confirming the 2026 assessment, property characteristics or exemption status. My notice shows [specific issue].”

Tax-payment call script

“I am calling about PIN [number], Tax Year 2025 payable in 2026. Please confirm the current amount due, any penalty and whether my payment dated [date] has posted.”

Recording call script

“I need help locating or ordering a recorded document. I have the owner name, PIN or legal description and an approximate recording date. Which record search should I use?”

Before You Pay, Appeal or Rely on the Record

  • Confirm this is Lake County, Illinois—not another Lake County.
  • Confirm the full PIN and property address.
  • Check the township before calculating an appeal deadline.
  • Check assessment year versus taxes-payable year.
  • Confirm exemptions on the current PIN.
  • Do not treat GIS lines as survey boundaries.
  • Do not treat the assessor owner field as a guaranteed title report.
  • Redact sensitive information before uploading SmartFile appeal evidence.
  • Save tax-payment and SmartFile confirmation numbers.
  • Use the responsible official office for the final filing, payment or legal record.

Official Lake County Property Action Links

Use these links after the guide has helped you identify the correct task.

Property lookup

Search by PIN, owner or address and review available assessment/tax information.

Property Tax Information

Tax parcel map

Use the GIS parcel viewer after identifying the correct property.

Tax Parcel Viewer

2026 appeal deadline

Confirm the township publication date and current final filing date.

Check Appeal Dates

SmartFile appeal

Use the official electronic process for a qualifying assessment appeal.

Appeal Filing Help

Tax payment

Review online payment methods, processor fees and posting instructions.

Online Payment Rules

Recorded deeds

Use the County Clerk Recording Division for recorded real-estate documents.

Recording Division

Lake County Assessor Property Search FAQs

Is the Lake County Illinois property search free?

Yes. Lake County provides a public property-information portal for normal owner, address and PIN research without a property-search fee. Separate fees can apply to tax-payment processing, recorded-document copies or other optional services.

How do I search Lake County IL property records by owner?

Use the official owner search and enter the owner as Last Name, First Name. Search only the owner field on that attempt. If needed, try a shorter name or wildcard and verify the correct result by address and PIN.

How do I search Lake County property records by address?

Start with the address number and street name without a direction. Do not enter owner or PIN at the same time. If no result appears, simplify the address by removing direction, suffix and unit details.

What is a Lake County Illinois PIN?

PIN means Property Index Number. It is the parcel identifier used throughout Lake County property assessment and tax records. The official property search instructs users to enter Parcel ID without dashes.

How do I find a Lake County property on the GIS map?

Search the address, owner or PIN in the property portal first, save the correct PIN, then open Lake County’s Tax Parcel Viewer. The map is useful for parcel context but is not a legal boundary survey.

What is the 2026 Lake County property assessment appeal deadline?

The deadline depends on the property’s township and generally runs 30 days from publication of that township’s assessment roll. As verified August 12, 2026, Benton and Ela currently have August 24, 2026 final filing dates. Check the live county schedule for every other township.

Can I file a Lake County assessment appeal without an attorney?

An individual residential property owner can generally file and represent themselves before the Board of Review. Lake County’s 2026 rules require corporations, LLCs, limited partnerships and similar entities to be represented by an Illinois-licensed attorney.

When is the second Lake County property-tax installment due in 2026?

The second installment of 2025 real-estate taxes payable in 2026 is due September 4, 2026. The first installment was due June 4. Check the Treasurer’s current account balance if any installment is late because statutory interest can apply.

Do Lake County homestead exemptions transfer to a new PIN?

No. Lake County states that exemptions do not transfer automatically to a newly assigned PIN. If the property receives a new PIN, verify the exemption record and submit the required application for the new parcel.

Where do I find a Lake County IL deed or perform a title search?

Use the Lake County Clerk Recording Division for deeds, mortgages, liens, releases and other recorded land documents. The Recording Division says it cannot perform or guarantee a full title search; a title company is needed when a guaranteed title search is required.

Best Lake County Search Path

Start with one clean official search: address, owner or PIN. Confirm the parcel and save the PIN. From there, use the Tax Parcel Viewer for GIS, the Chief County Assessment Office or township assessor for value/exemption issues, SmartFile for a timely appeal, the Treasurer for tax payments and the Recording Division for recorded deeds.

For August 2026 users, the most time-sensitive checks are the township-specific assessment appeal window and the September 4 second property-tax installment deadline.

Property Search Smart Helper

Find the Right Property Record, Tax Bill, Deed or Assessor Search Route

Use this helper before searching county property records. It helps you choose the right office, prepare the right details, avoid wrong-office mistakes, and review property records safely.

Official-source focused Use county assessor, appraiser, auditor, tax collector, treasurer, recorder, clerk, GIS and appeal resources where available.
Not legal or tax advice Always confirm values, taxes, deeds, exemptions, appeals and deadlines with the official county office.
Works across states Designed for APN, PIN, parcel number, STRAP, folio, account number, GIS map and deed-record searches.

Property Search Route Finder

Choose what you have and what you want to find. The tool will suggest the best search route and common mistake to avoid.

Copied.

Parcel / APN / PIN Format Helper

Parcel numbers are formatted differently by county. Try these variations if your official search does not return results.

This tool does not send or store your entry. It only creates search-format ideas on this page.
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Assessor, Tax Collector, Recorder or GIS?

Select your issue and this tool will show the office that usually handles it.

Choose an option above
This finder helps prevent wrong-office mistakes. Exact office names vary by state and county.

Simple Property Tax Estimate Helper

This is a general estimate only. State and county tax rules differ, so always verify final bills with the official tax collector, treasurer or county tax office.

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Exemption / Appeal Readiness Checklist

Use this before applying for an exemption or challenging a value. Missing proof is one of the biggest reasons users waste time or miss deadlines.

Property Record Review Checklist

Review these fields before relying on any assessor, appraiser, auditor, property appraiser, tax or deed record.

Official-source and accuracy note: This helper is for educational use only. Property values, tax bills, deeds, exemptions, GIS boundaries and appeal deadlines can change. Always confirm final information with the official county assessor/appraiser/auditor, tax collector/treasurer, recorder/clerk, GIS office or appeal board.