Hilo Zoning & Land Use Guide
Last updated: Verified:
Key Zoning Facts
Regulatory Layers That Apply in Hilo
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 — Hawaii County
- Role: Property records, tax assessment, zoning and land use regulation
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.
Primary Zoning Districts
| District Code | Name | Min Lot | Max Height | Front Setback | Side Setback | Rear Setback | FAR |
|---|---|---|---|---|---|---|---|
| RS-15 | Single-Family Residential | 15,000 sq ft | 35 ft | 25 ft | 10 ft | 20 ft | — |
| RM-4 | Multiple-Family Residential | 10,000 sq ft | 35 ft | 15 ft | 10 ft | 15 ft | — |
| CG | General Commercial | None | 60 ft | 10 ft | 0 ft | 10 ft | — |
ADU Rules in Hilo
ADUs:Allowed
- Max Size
- 800 sq ft
- Max Height
- 25 ft
- Rear Setback
- 10 ft
- Side Setback
- 5 ft
- Parking
- 1 off-street space required
- Owner Occupancy
- Required
- Permit Timeline
- 60-120 days
Official Sources
Frequently Asked Questions
Frequently Asked Questions
Can I build an ADU in Hilo?
Yes. Hawaii County permits accessory dwelling units in residential zones subject to lot size, setback, and parking requirements. Contact the County of Hawaii Planning Department for details.
How do I find the zoning for my property in Hilo?
Use the Hawaii County GIS portal or visit the County of Hawaii Planning Department in Hilo for a zoning determination.
What zones allow multi-family housing in Hilo?
Multi-family housing is allowed in the RM (Residential Multiple) zones and certain commercial zones in Hilo, particularly along Kilauea Avenue and Kanoelehua Avenue.
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.