Research
How to Look Up Any Property in Hawaii by TMK Number
Every parcel in Hawaii has a Tax Map Key. Here is what the number means, how to find it, and everything you can learn from it.
Culture & History
What is an Ahupuaʻa? Hawaii's Traditional Land System Explained
The ahupuaʻa shaped how Hawaiians managed land, water, and resources for centuries. It still shapes land law today.
Hazards
Hawaii Flood Zones Explained: FEMA, FIRM Maps, and What They Mean for Your Property
Zone AE, Zone VE, Zone X — what each designation means for insurance, mortgages, and what you can build.
Big Island
Hawaii Lava Zones: How Zones 1–9 Affect Property Value and Insurance
USGS ranks every Big Island parcel on a lava risk scale. Here is what each zone means in plain English — and what happened in 2018.
Zoning
Hawaii Zoning Codes Explained: R-3.5, AG-1, A-2 and What You Can Build
A plain-English guide to Hawaii's residential, agricultural, and apartment zoning codes — including ADU rules by zone.