Washington County Property Records Search
Washington County property records are held by the Supervisor of Assessments in Nashville, the county seat. You can search these records through the county's free online portal or contact the assessment office directly by phone or email. Township assessors handle the field work and set values for land and buildings across the county. The county office reviews those numbers for fairness. If you need to look up an assessed value, check ownership details, or find tax information, this page covers the tools and contacts for Washington County property records in Illinois.
Washington County Property Records Quick Facts
Washington County Assessment Office
Sharon Mewes serves as the Supervisor of Assessments for Washington County. Her office is at 101 E. St. Louis St. in Nashville. This is the main office for property records in the county. Staff track assessed values for every parcel, process exemption forms, and work with township assessors who do the hands-on valuation work. Under 35 ILCS 200/, the Supervisor of Assessments must check that township values are uniform across Washington County. If one area looks out of line, the office can step in and make changes so property records stay fair for everyone.
Township assessors in Washington County visit homes, check new builds, and review permits to set values. January 1 is the assessment date each year. All real property in the county gets assessed at 33 1/3 percent of fair market value, which is the standard across most of Illinois. Farm land uses a soil productivity formula instead of market sales data. After the township assessors finish, Sharon Mewes reviews the numbers to confirm they hold up. The Board of Review then hears complaints from owners who think their value is too high or that something was missed in the assessment.
The Washington County Supervisor of Assessments website provides contact details, office info, and general guidance on property assessment in the county.
This page is where to start if you need to reach the assessment staff or learn how the process works in Washington County.
| Office | Washington County Supervisor of Assessments |
|---|---|
| Officer | Sharon Mewes |
| Address | 101 E. St. Louis St., Nashville, IL 62263 |
| Phone | (618) 327-4800 Ext. 325 |
| sharon.mewes@washingtonco.illinois.gov | |
| Website | washingtonco.illinois.gov/supervisor-of-assessments |
Search Washington County Property Records Online
Washington County offers a free online property search through the DevNet Wedge platform at washingtonil.devnetwedge.com. You can look up parcels by address, owner name, or Property Index Number. The PIN is a code tied to each piece of land that stays with the parcel no matter who buys or sells it. Most people start with an address search since that is the info they have on hand. Results pull up the assessed value, fair market value, lot size, and property class for each parcel. No login is needed and the tool is open to anyone.
Under 35 ILCS 200/, all property in Washington County must be assessed at 33 1/3 percent of fair market value. The online search shows that figure along with any exemptions on file. You can also see the township where the property sits and the class code that tells you if it is farm, residential, or commercial land. This is the fastest way to pull up Washington County property records without a drive to Nashville. The search runs day and night, so you can check records at any hour.
The Washington County property search portal at DevNet Wedge handles most online lookups for parcels in the county. Access it at washingtonil.devnetwedge.com.
Enter an address, owner name, or PIN and the system returns full parcel data for any property in Washington County.
The statewide Illinois Property Tax Portal is another way to reach Washington County data. Pick the county from the list and it links to the local tax inquiry system. Between these two tools, most searches for Washington County property records can be done from home.
Washington County Property Tax Records
Property taxes in Washington County are paid in arrears. The bill you pay this year covers the prior year's assessment. The lien date under 35 ILCS 200/ is January 1. That date sets who owns the parcel and what it is worth for tax purposes. Each tax bill breaks down what you owe to every taxing body that covers your area. Schools, the county, road districts, and local municipalities all get a share of the total. The rate depends on where the parcel sits within Washington County.
A parcel in Nashville may carry a different total tax rate than one in a rural township. That gap comes from the mix of taxing bodies that overlap each spot. The county clerk calculates the final rate for each tax code area. The Illinois Department of Revenue also sets a state equalization factor each year that adjusts values across all counties. Knowing how these rates work is helpful when reading your Washington County property records. The assessor sets the value. The County Treasurer sends out the bill and collects the payment. For questions about the assessed value itself, call Sharon Mewes at (618) 327-4800 Ext. 325.
Note: Washington County tax bills typically go out in the spring with two installment due dates later in the year.
Washington County Property Exemptions
Property owners in Washington County can apply for exemptions that lower their tax bill. All forms go through the assessment office at 101 E. St. Louis St. in Nashville. The General Homestead Exemption cuts $6,000 from your assessed value if you own and live in the home. No age limit applies. This is the most common exemption in Washington County property records.
Homeowners age 65 and up can also get the Senior Citizens Homestead Exemption for an extra $5,000 off. The Senior Citizens Assessment Freeze locks your assessed value so it does not climb each year, but income limits apply. A Disabled Persons Homestead Exemption gives a $2,000 cut under 35 ILCS 200/. Veterans with a service-connected disability may qualify for the Disabled Veterans Homestead Exemption, where the amount depends on the VA rating. The Home Improvement Exemption defers increases from upgrades for up to four years. Once the office approves an exemption, it shows up in your Washington County property records and stays on file unless your status changes.
- General Homestead Exemption: $6,000 reduction
- Senior Citizens Homestead Exemption: $5,000 (age 65+)
- Senior Citizens Assessment Freeze: locks value in place
- Disabled Persons Homestead Exemption: $2,000 reduction
- Disabled Veterans Homestead Exemption: varies by rating
- Home Improvement Exemption: defers increases up to 4 years
State Resources for Washington County
The Illinois Department of Revenue property tax page provides guidance that applies to every county in the state, including Washington. The department does not manage property tax directly. It sets rules and provides oversight while local offices handle the real work. You can find info about exemptions, assessment standards, and how to reach local offices on that page. Washington County residents who need general help with how property tax works in Illinois can start here.
The County PIN Information page at the Department of Revenue helps you find your Property Index Number if you do not have it. Your PIN shows up on tax bills and assessment notices. It is the most reliable key for searching Washington County property records. For state-level help, call 1-800-732-8866.
Get Washington County Records in Person
Visit the assessment office at 101 E. St. Louis St. in Nashville during regular hours. Bring the address or PIN of the property you want to check. Staff can look up the full record, print what you need, and answer questions about your assessment. No appointment is needed. Washington County property records are public. Anyone can ask to see them.
Phone help works too. Call (618) 327-4800 Ext. 325 and staff can pull up basic data for you over the line. You can also email sharon.mewes@washingtonco.illinois.gov with your question. For quick lookups, the online search at washingtonil.devnetwedge.com is faster than a trip to the courthouse. But if you need to file an exemption form, ask about an appeal, or deal with something that needs a signature, going in person is the best choice. The Illinois Department of Revenue contact page can also point you in the right direction for Washington County property records questions.
Nearby Counties
These counties border Washington County. Property records belong to the county where the parcel is located. If a property sits near a county line, double check the address before you search the wrong system.