AG-1 Restricted Agriculture
Agricultural district for working and hobby farms on the rural margins of Oahu. The 20% coverage maximum and 20-ft front yard create a wide, open character. Residential use is permitted as a secondary use incidental to agricultural operations.
Common locations: Waimanalo, Kaaawa, Punaluu, Hauula, Waialua, Waianae Coast rural areas, and agricultural lands in central Oahu.
Development standards
| Standard | Requirement |
|---|---|
| Minimum lot area | 20,000 sf |
| Front yard | 20 ft min |
| Rear yard | 5 ft min |
| Interior side yard | 5 ft min |
| Street-side yard | 20 ft min |
| Max lot coverage | 20% |
| Max building height | 25 ft |
| FAR limit | None |
Agricultural structures (barns, equipment storage) may be treated differently from residential coverage under certain conditions. Verify current ROH text. Height limit of 25 ft is lower than residential districts.
Source: ROH §21-5.10 (AG-1 agricultural district standards)
Sample calculation
Common DPP plan-check violations
Key exceptions and reliefs
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Development standards are based on ROH Chapter 21 as of May 2026. Verify all values against the current DPP-adopted code before relying on them. Overlay districts (SMA, flood zone, historic), special area requirements, and neighborhood-specific provisions may impose additional standards not reflected here.