Aiea Zoning & Land Use Guide
Official references and local checks
Use the official references below to identify the rules that apply to your address, then confirm parcel-specific requirements with the local authority before filing an application.
Official references
- Population:
- 10,039
- County:
- Honolulu County
- State building code:
- 2018 IBC with Hawaii amendments(statewide default)
- State ADU law:
- Yes — Act 39 (SB 3202, 2024), signed May 28, 2024, requires Hawaii counties to adopt or amend ordinances allowing at least two ADUs on all residentially zoned lots no later than December 31, 2026.
- FEMA flood map:
- Search flood zones
- Planning department:
- City & County of Honolulu Department of Planning and Permitting
- Municipal code:
- View code online
- Zoning map:
- View local zoning map
Before you apply
- Call the City & County of Honolulu Department of Planning and Permitting: (808) 768-8000
- Search the municipal code for the chapter that covers your zoning district and proposed use.
- Use the local zoning map to look up your parcel's zoning designation before applying for a permit.
- Check FEMA flood zone for your parcel — flood-zone status changes setbacks, foundation requirements, and insurance.
- Check your HOA CC&Rs and recorded deed restrictions — they are common in Aiea and frequently restrict ADUs, fences, and exterior changes beyond what zoning allows.
Key Zoning Facts
Regulatory Layers That Apply in Aiea
Your property is subject to ALL of these regulatory layers. Each one can impose additional requirements beyond the others.
Federal
- FEMA flood mapping: check parcel-specific flood-zone status
- View FEMA Flood Map
County — Honolulu County
City / Municipal
The municipality's zoning ordinance, building-code enforcement, and local permits form the primary local layer of land-use regulation for your property.
Overlay Districts
No overlay districts identified.
Private Restrictions
- Private covenants, deed restrictions, condominium rules, or association rules can impose requirements beyond zoning.
- Check HOA CC&Rs for additional restrictions.
Statewide Context (Hawaii)
Local data for Aiea is limited. The following state-level facts apply across Hawaii and are inherited by this page until city-specific details are verified.
- State Building Code
- 2018 IBC with Hawaii amendments
- State ADU Preemption
- Yes — state law overrides local rules
- Coastal Zone
- Yes
- Wildfire Zones
- No
ADU Rules in Aiea
- Max Size
- 800 sq ft
- Max Height
- 25 ft
- Rear Setback
- 5 ft
- Side Setback
- 5 ft
- Parking
- 1 off-street space required
- Owner Occupancy
- Owner must occupy either the primary or accessory dwelling
- Permit Timeline
- 60-90 days
Permit Costs & Timelines
Check Current Permit Fees & Timelines
Permit fees and review times can vary by project type, scope, valuation, and required approvals. Check the current schedule with the local permitting authority before filing.
Check current Aiea permit information →Official Sources
City-specific