The County of Hawai'i has no dedicated garage-sale permit ordinance. Occasional residential yard sales are generally allowed as incidental to your home; running a continuous retail operation from a residence, however, can trigger the zoning code's home-occupation and signage rules under Hawai'i County Code Chapter 25.
Unlike some mainland cities that cap the number of sales per year or require a permit, Hawai'i County does not license one-off garage or yard sales. The limit is practical: a genuinely occasional, non-commercial sale is fine, but frequent or ongoing sales look like an unpermitted business in a residential district and can be enforced as a zoning violation. Home-based commercial activity is governed by Chapter 25's home-occupation provisions, and temporary sale signs must comply with the county sign regulations in the same chapter (no signs in the public right-of-way).
No penalty for legitimate occasional sales. A recurring 'sale' operating as an unpermitted home business, or non-compliant signage, is enforced by the Planning Department under Chapter 25 as a zoning violation with daily fines.
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