Clay County

South Dakota

Last verified September 16, 2026

Clay County is a county in South Dakota, with property values assessed by Director of Equalization Lennea Olson. Lisa Terwilliger serves as Register of Deeds, whose office maintains the county's official records, deeds, and court filings. Use the search tools below to look up property assessments, recorded deeds, and court documents for Clay County.

Director of Equalization

Official
Lennea Olson
Phone
605-677-7140
Address
211 W Main St Suite 205, Vermillion, SD 57069

Vehicle Registration

Vehicle registration and titling for Clay County is handled by the Clay County Treasurer's Office(605) 677-7123.

Vehicle Registration & Titling → (opens in a new tab)

How to Search Property and Court Records

A Director of Equalization and a Register of Deeds hold different pieces of the same property's history, and knowing which one to search saves time. The Director of Equalization's office assesses each parcel's value for tax purposes and publishes a searchable record — owner name, assessed value, lot size, building details, and the parcel's legal description — usually searchable by owner name, address, or parcel ID.

The Register of Deeds's official records index is where deeds, mortgages, liens, satisfactions, and other recorded documents actually live. If you need to confirm who holds title to a property, trace a chain of ownership, or check for an outstanding lien, that's a Register of Deeds search, not a Director of Equalization search. Court dockets — civil, probate, family — are typically a separate search within the same office.

Why this matters for insurance and title work: confirming the named insured matches the recorded owner, checking for liens before binding a policy, and verifying a legal description all start with these two offices. Search tools and coverage vary by county — some counties use one shared portal for both, others keep them fully separate.

Cities & Towns in Clay County

Building permit contacts for jurisdictions within Clay County:

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