Sully County, South Dakota Tax Assessors' Office
PO Box 265
Onida, South Dakota 57564
Where is the Sully County Tax Assessor's Office?
What can the Sully County Assessor's Office do for me?
The Sully County Tax Assessor's Office oversees the appraisal and assessment of properties as well as the billing and collection of property taxes for all taxable real estate located in Sully County.
Contact the assessor's office if you need help with paying your property taxes, applying for a homestead exemption or other tax exemption, reporting upgrades to your home, appealing your property tax assessment, or verifying your property records.
Submitting a Sully County property tax appeal
If you believe that your house has been unfairly overappraised (i.e. appraised at a value higher than the true market value of the property), you can attempt to get your home re-appraised at a lower value by contacting the Assessor's Office to submit a property tax appeal.
You will have to submit a form describing your property and sufficient proof that it is overassessed, including valuations of similar homes nearby as evidence. If your appeal is accepted, your home assessment (and property taxes) will be lowered as a result.
If you would like to appeal your property, call the Sully County Assessor's Office at (605) 258 2522 and ask for a property tax appeal form. Keep in mind that property tax appeals are generally only accepted in a 1-3 month window each year.
For more information and example appeals, see how to appeal your property taxes.
Useful Sully County Facts:
The median home value in Sully County is between $59,870.00 and $84,530.00. Property tax rates are based on property values.
How can I contact Sully County?
You can try contacting the Sully County local government directly with any issues the Assessor's Office can't solve. In many counties, certain property records such as deeds are kept in the county courthouse or county archives instead of at the tax assessors' office.
The county seat for Sully County is located in the County Courthouse in Onida, which is where the Sully County Assessors' Office is also located. You can direct your general inquiries to Sully County with the contact info listed below.
Sully County Phone Number
Sully County Fax Number
Sully County County Courthouse Address
PO BOX 265
Onida, SD 57564-0265