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Klingsheim v. Cordell (2016)

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Klingsheim v. Cordell (2016)

Citation: 2016 CO 18, 379 P.3d 270 · Court: Supreme Court of Colorado, No. 14SC931 · Decided: 2016

The controlling colorado decision on a county treasurer’s duty of diligent inquiry before issuing a treasurer’s deed. The Colorado Supreme Court held that the duty of further diligent inquiry under § 39-11-128(1), C.R.S., arises only when the facts known to the treasurer show the taxpayer could not have received the mailed notice — for example, when the notice is returned undelivered. Where nothing shows the notice failed, no further-inquiry duty attaches, and certified mail that is not returned satisfies due process.

Facts

The Cordells were record owners of a tract in La Plata County (and Mr. Cordell owned an adjoining tract). After three successive years of unpaid taxes, Brenda Heller bought tax liens on the parcels and assigned them to Bradley Klingsheim. The Treasurer mailed the statutory notice to the Cordells in a single envelope addressed to both Carl and Wanda Cordell at an address in New Mexico. The Treasurer later received a return receipt showing the notice had been received — signed for by Mr. Cordell’s mother, Cleo Cordell.

Holding

A treasurer owes a duty of further diligent inquiry under § 39-11-128(1) only when the facts known to the treasurer establish that the taxpayer could not have received the notice (e.g., the mail was returned undelivered or undeliverable). When the known facts do not show that the taxpayer could not have received notice, no duty of further inquiry arises, and the treasurer need not ensure actual receipt. Certified mail to the owner-designated address that is not returned satisfies due process.

Reasoning

  • The governing constitutional standard is mullane-v-central-hanover: notice “reasonably calculated, under all the circumstances,” to apprise interested parties of the pending action.
  • A signed return receipt — even if signed by someone other than the owner — indicates the notice reached the address and was not returned, so it does not trigger a duty of further inquiry.
  • The further-inquiry trigger is the jones-v-flowers situation: the government learns its notice failed (returned mail), which obligates additional reasonable steps. Absent that signal, the treasurer’s mailed notice is constitutionally sufficient.

Practical impact

  • For investors / operators (tax-lien / treasurer’s-deed buyers): a treasurer’s deed is defensible where certified notice to the owner-designated address was sent and not returned; the treasurer is not required to prove actual receipt. The acquisition risk concentrates on cases of returned mail, which trigger the further-inquiry duty and, if ignored, render a deed voidable. A deed issued without required diligent inquiry is voidable (set aside by a court), not automatically void. See void-vs-voidable.
  • For former owners: a void-sale challenge generally needs a fact showing the treasurer knew the notice could not have reached the owner (typically returned mail) and failed to take further steps.

Good-law status

Still good law as of last_verified 2026-06-02. On remand the Court of Appeals addressed related issues in cordell-v-klingsheim-2018 (2018 COA 80). Klingsheim remains the Colorado Supreme Court’s controlling statement on the diligent-inquiry trigger. Not overruled.

Why it matters

Klingsheim defines exactly when a Colorado treasurer must do more than mail notice: only when the record shows the owner could not have received it. It is the cornerstone due-process-notice authority for treasurer’s-deed acquisitions and the source of Colorado’s “voidable, not void” treatment of defective-inquiry deeds.

Applies in →

colorado.

Legal information, not legal advice. This page summarizes a court decision for educational purposes and does not create an attorney-client relationship. Verify against the primary opinion and consult a licensed attorney in the relevant jurisdiction before acting. Last verified 2026-06-02.

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