A Higher Maui Property-Tax Classification: Check the Assessment Appeal Route Before Filing Suit

If a Maui property’s tax classification changes, identify the assessment appeal route and its deadline before choosing a refund lawsuit. Paying the tax does not replace an assessment appeal, and describing the challenge as constitutional does not create jurisdiction in a general civil court.

The December 30, 2025 decision in Piezko v. County of Maui, No. SCAP-24-0000393 (Haw. Dec. 30, 2025), concerned a temporary classification ordinance applied to the 2021 assessment year. The Hawaii Supreme Court held that the owners’ challenge belonged in the statutory tax-appeal process. The owners had missed that process and could not bypass it with a later class action in circuit court. Piezko, slip op. at 9–15.

Identify the Assessment You Are Challenging

Separate the assessed value, property classification, exemption, and tax bill. They may reflect different questions even when they appear in one mailing. Record the property identifier, assessment year, notice date, classification shown, and the reason you believe it is wrong. Keep the original notice and envelope alongside any payment record.

The Piezkos challenged the higher short-term-rental classification of their vacation property under Ordinance 5160. That ordinance’s disputed amendment applied to the 2021 assessment year and was repealed effective January 1, 2022. The case does not establish the classification or rate for a present assessment. Id. at 3–4, 13.

Put the Forum and Deadline in the Same File

Under the Maui provisions analyzed in Piezko, the taxpayer first appealed to the county Board of Review, with further review in the Tax Appeal Court. Constitutional objections belonged in that sequence too, even though the Board’s power to decide federal constitutional questions was limited. The objection had to be identified for later court review. Id. at 9–12.

Do not calendar a present deadline from a historical opinion. April 9, 2021 was the assessment appeal deadline at issue in this litigation. Check the notice and operative official county rules for the tax year involved, including where and how to file and what constitutes timely filing. If the notice is unclear or a deadline may have passed, obtain advice promptly rather than assuming a later refund action remains available.

A Constitutional Theory Does Not Eliminate the Procedural Steps

The owners sought a refund through unjust-enrichment and due-process theories. The Supreme Court examined the substance: They were contesting taxes assessed under an allegedly unconstitutional ordinance. That made the case a real property tax assessment appeal within the Tax Appeal Court’s exclusive jurisdiction. Changing the pleading label did not change the underlying dispute. Id. at 11–13.

An unrelated taxpayer had obtained relief after timely using the Board and Tax Appeal Court process. The Piezkos’ later reliance on that result did not reopen their own missed appeal window. The Supreme Court did not decide whether the ordinance itself was constitutional, and did not reach the owners’ issue-preclusion question. Id. at 14–15.

For an Owner Who Lives Outside Hawaii

The property’s location and applicable taxing authority matter more to the assessment procedure than the owner’s home address. California FTB procedures are not the route for contesting a Maui real property assessment. Owners should obtain advice from counsel qualified to handle Hawaii tax appeals; this article does not represent that our firm handles Hawaii administrative filings.

Keep the assessment and appeal papers together so that local counsel can identify the disputed determination and remaining options. Read our Piezko case analysis for the court’s reasoning and limits. Our tax services page describes the firm’s tax practice.