Tax relief and valuation review

Protect your exemption and appeal rights.

A homestead exemption, senior-relief program, or valuation protest can change the amount a homeowner owes—but only if the filing reaches the right local office in the correct window. Use the verified county guidance below as your working checklist, then confirm the current form and deadline with Mellette County Director of Equalization.

Relief programs

What the local record says

Homestead filing

The filing guidance for this county is: For 2026, South Dakota's Property Tax Homestead Exemption application for a person age 70 or older or a surviving spouse is due April 1, 2026 to the county Treasurer; Owner-Occupied Status certificates were due March 15, 2026 to the Director of Equalization; disabled-veteran and paraplegic-veteran applications generally are due November 1, 2026. Use the official form or application channel, provide the residence and ownership documentation requested, and keep a copy of the submission.

Open homestead application

Senior citizen tax relief

South Dakota's 2026 Assessment Freeze for the Elderly and Disabled is available to a qualifying owner-occupied single-family homeowner age 65+ or disabled who has the required residency and 200-day occupancy; income must be less than $56,595 for a single-member or $66,885 for a multiple-member household, full-and-true value must be no more than $514,500, and the annual application is due April 1, 2026. The 2026 refund application for 2025 taxes was due July 1, 2026 for qualifying seniors or disabled residents. The separate homestead exemption is for age 70+ or a surviving spouse, defers taxes as a lien, and is also due April 1.

Valuation cap or growth limit

No county-specific individual-parcel cap was verified. Under enacted 2025 South Dakota Senate Bill 216, for taxes payable in 2027–2031, total assessed value of county owner-occupied single-family dwellings may not increase more than 3% over the prior year, excluding statutory additions for new improvements, reclassifications, annexations, and minor boundary changes; this is a countywide aggregate cap, not an individual-parcel cap. Taxing-district revenue is generally limited to the lesser of 3% or the CPI/index factor plus growth, subject to statutory exceptions. Individual assessments remain at full and true/market value; the elderly/disabled assessment freeze is separate.

Appealing an assessment

Build the objection around evidence and the notice date.

Calendar the window

Use the valuation notice and the county’s published protest guidance to determine the last day to file. Do not assume the payment deadline controls the appeal.

Assemble support

Gather comparable sales, photographs, repair records, appraisal evidence, property characteristics, and any documentation that explains why the assessed value is incorrect.

File and preserve proof

Submit through the official channel, save the confirmation, and attend the board or review hearing if one is scheduled. An appraiser or attorney can help evaluate evidence when the value or stakes are substantial.

The verified protest guidance for this county is: For 2026 assessments, assessment notices must be mailed by March 1, 2026; written appeal to the local Board of Equalization must be filed by March 12, 2026; appeal to the county or consolidated Board of Equalization must be received by April 7, 2026; appeal to the Office of Hearing Examiners must be mailed or received by May 15, 2026, under the South Dakota Department of Revenue 2026 appeal guide. If the language is not a specific calendar date, contact the office promptly for the current notice and board-review schedule.