Hawaii Erosion Control Law: Statewide Environmental Rules Rules (2026)

Key Facts

Standard setback: 40+ feet shoreline
Statute: HRS Chapter 205A
Authority: DLNR and counties
Maximum fine: $15,000 per day

Full Breakdown

Under HRS Chapter 205A, Hawaii's Coastal Zone Management Act establishes statewide shoreline setbacks and Special Management Area permitting. Shoreline setbacks are typically 40 feet from the certified shoreline, with longer setbacks for larger lots and erosion-prone areas. The Department of Land and Natural Resources oversees shoreline certification and approves erosion-control structures like seawalls only under strict conditions, generally disfavoring hardening. Counties must adopt rules at least as protective as state law and process Special Management Area Use Permits for development within coastal zones.

Violations & Penalties

Unpermitted shoreline construction faces fines up to $15,000 per violation plus $15,000 per day under HRS 205A, plus mandatory restoration.

Frequently Asked Questions

How far must Hawaii buildings sit from the shoreline?

State law requires at least 40 feet from the certified shoreline, with deeper setbacks for larger lots and erosion-prone areas. Counties may impose stricter setbacks but not less.

Can I build a seawall to stop erosion in Hawaii?

Shoreline hardening is strongly disfavored under HRS 205A. Seawalls and revetments require state and county approvals and are rarely permitted, typically only to protect existing structures.

Hawaii Shoreline Erosion and Setback Rules

Key Facts

Full Breakdown

Violations & Penalties

Frequently Asked Questions

Sources

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