Mililani Town Zoning & Land Use Guide
Last updated: Verified:
Key Zoning Facts
Regulatory Layers That Apply in Mililani Town
Your property is subject to ALL of these regulatory layers. Each one can impose additional requirements beyond the others.
Federal
- FEMA Flood Zones: Applicable
- View FEMA Flood Map
County — Honolulu County
- Role: Property records, tax assessment, unincorporated area planning
City / Municipal
The city's zoning ordinance, building codes, and local permits form the primary layer of land-use regulation for your property.
Overlay Districts
No overlay districts identified.
Private Restrictions
- HOA / CC&Rs common: Yes
- Check HOA CC&Rs for additional restrictions. Mililani Town Association enforces community standards.
Primary Zoning Districts
| District Code | Name | Min Lot | Max Height | Front Setback | Side Setback | Rear Setback | FAR |
|---|---|---|---|---|---|---|---|
| R-5 | Residential | 5,000 sq ft | 25 ft | 15 ft | 5 ft | 10 ft | — |
| R-3.5 | Residential | 3,500 sq ft | 25 ft | 10 ft | 5 ft | 5 ft | — |
| B-1 | Neighborhood Business | None | 40 ft | 10 ft | 0 ft | 10 ft | — |
ADU Rules in Mililani Town
ADUs:Allowed
- 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
Official Sources
Frequently Asked Questions
Frequently Asked Questions
Can I build an ADU in Mililani Town?
Possibly. While the City & County of Honolulu permits ohana units, the Mililani Town Association has CC&Rs that may impose additional restrictions. Check with both the county and your HOA.
How do I find the zoning for my property in Mililani Town?
Use the HiCentral GIS portal at gis.hicentral.com or contact the Honolulu Department of Planning and Permitting.
What zones allow multi-family housing in Mililani Town?
Most of Mililani Town is single-family residential. Limited multi-family housing exists in townhouse developments that were part of the original planned community.
Disclaimer: The information on this website is provided for general informational purposes only and does not constitute legal, financial, or professional advice. Zoning codes and building regulations change frequently. Always verify current requirements with your local planning department and building authority before making any decisions.