Haw. Rev. Stat. § 322-29: Comptroller to make improvements, when.

The board shall transmit a copy of its decision to the comptroller and to the other persons affected thereby, so far as practicable, and in case the owner of the land does not within ten days after the receipt of the decision begin work upon the improvements, or in case the work is not completed within such additional time as has been specified as provided in section 322-23, the comptroller may proceed to make or complete the improvement according to the decision of the board. In case no appeal is taken from the decision of the board as above provided, or work is not begun and completed within the times prescribed, the comptroller may proceed to make or complete the improvements.