Hawaii AG Land Rules: Permitted Uses, Soil Ratings, and Water Permits

Agricultural land in Hawaii sits inside a state district created by Chapter 205 of the Hawaii Revised Statutes, and the rules for Hawaii agricultural land run on two tracks at once: the state’s permitted-use list under Chapter 205, and whatever the county layers on top through its own zoning ordinance. You can farm, raise livestock, build a genuine farm dwelling, run limited agritourism, and put up buildings tied to the operation. You cannot build speculative housing, open a golf course or drive-in theater, or convert wetlands to new cropland without a federal permit. Everything else lives in the details.

The Two-Tier System You’re Working Inside

Hawaii classifies every acre in the state into one of four districts: urban, rural, agricultural, or conservation. The Land Use Commission, created with the statute in 1961, administers the system and decides petitions to reclassify land from one district to another.¹²

Counties then apply their own zoning on top of the state classification. County rules can add restrictions but cannot loosen the state ones. When the two conflict, the stricter rule wins. Landowners moving here from mainland jurisdictions often miss this: satisfying the county is only half the job.

What You Can Do on Agricultural Land

The set of permitted uses depends partly on the soil rating (more on that below), but the core activities apply across the agricultural district.

Farming and Livestock

Growing crops and raising animals is the baseline. That covers vegetables, fruits, flowers, foliage, timber, forage, and bioenergy crops. Livestock includes poultry, bees, fish, and other aquatic life raised for economic or personal use. Game and fish propagation is allowed.³

Farm Dwellings

You can build a farm dwelling, but the statute defines the term narrowly. It has to be a single-family dwelling located on and used in connection with a farm, and the family living there must derive income from the agricultural activity on that land. Employee housing tied to the operation is also permitted, along with farm buildings and structures directly related to farming and animal husbandry.³

This is where enforcement bites hardest. Building a house on agricultural acreage without a genuine farming connection is one of the most common violations the Commission encounters, and it’s the pattern the statute is specifically designed to prevent.

Agritourism

Agricultural tourism is permitted on working farms, but only as a secondary activity to the principal farming operation. It has to be conducted for the enjoyment, education, or involvement of visitors, and it cannot take over as the primary purpose of the land. Farm tours, U-pick operations, and educational workshops tied to what’s actually growing on-site are the kinds of activities that fit.³

Recreation, With Limits

Certain open-area recreational uses are allowed: day camps, picnic grounds, parks, and riding stables. The statute specifically excludes golf courses, golf driving ranges, country clubs, airports, drive-in theaters, dragstrips, and overnight camps.³

Accessory and Support Uses

Several other activities are permitted when they support the agricultural use:

Roadside stands selling agricultural products grown on the premises.
Mills, storage buildings, and processing facilities tied to the farming operation.
Utility lines, roadways, transformer stations, communications equipment, and major water storage tanks. Full-scale offices, corporation yards, and treatment plants are not permitted.
Retention, restoration, and improvement of buildings or sites with historic or scenic interest.
State-developed agricultural parks.

How the Soil Rating Affects What’s Allowed

The Land Study Bureau rated all non-urban land in the state on an A-through-E productivity scale, with A the highest and E the lowest. The rating considers soil texture, structure, and depth, drainage, stoniness, slope, and climate variables including temperature, sunlight, and rainfall. Flat terrain with medium-textured soils tends to rate highest; slopes between 20 and 35 percent may support orchards and grazing but rate lower.⁴

Land rated Class A or B faces the strictest limits on non-farming uses. Land rated C, D, or E has somewhat broader permitted uses. If you’re weighing what you can do with a specific parcel, the productivity rating is one of the first things to check, and petitions to reclassify A- or B-rated land out of the agricultural district face significant scrutiny at the Commission.

Water Use Permits

Hawaii’s State Water Code, Chapter 174C, calls for maximum beneficial use of the state’s waters for purposes including irrigation and agricultural uses, balanced against protection of traditional and customary Hawaiian rights, ecological health, scenic beauty, and public recreation.⁵ The Commission on Water Resource Management runs the code and requires permits for water use in designated water management areas.

Farmers drawing from streams or groundwater inside those areas need a water use permit, and the application has to show the proposed use is reasonable and beneficial. Agricultural water rights in Hawaii are rarely automatic. Plan around them from the start rather than discovering the requirement after you’ve bought the land.

Environmental Rules That Reach Onto the Farm

When HEPA Applies

The Hawaii Environmental Policy Act, Chapter 343, requires environmental assessments for certain categories of actions. The triggers most relevant to agricultural land are projects proposing use of state or county lands or funds, any use within conservation districts, activities within shoreline areas, and proposed reclassifications of conservation district land.⁶ If the assessment finds a possible significant effect on the environment, a full environmental impact statement is required.

The State Office of Planning and Sustainable Development administers the Environmental Review Program that handles HEPA compliance.⁷ For most agricultural landowners, HEPA becomes relevant when seeking a boundary amendment, building near shoreline areas, or proposing large infrastructure like renewable energy installations.

The Clean Water Act Farming Exemption

Federal law exempts established, ongoing farming operations from the normal permit requirement for discharging dredged or fill material into wetlands. Under Section 404(f)(1) of the Clean Water Act, exempt activities include plowing, seeding, cultivating, harvesting, maintaining drainage and irrigation ditches, and building farm ponds and farm roads in accordance with best management practices.⁸

The limit matters. The exemption covers normal farming inside an established, ongoing operation. Any activity that converts a wetland to upland or brings a wetland into farm production for the first time is not exempt and requires a Section 404 permit. Rotating between soybeans and rice on established fields is fine; expanding into previously unfarmed wetland is not.⁸

Endangered Species

Hawaii has more endangered species per square mile than anywhere else in the United States, and agricultural land often overlaps habitat for listed plants and animals. The federal Endangered Species Act prohibits the “taking” of listed species, which includes habitat destruction that harms or harasses them. Owners whose land includes listed-species habitat can face restrictions on clearing, grading, or changing practices in ways that would disturb the species. The practical move is to talk with the U.S. Fish and Wildlife Service before, not after, breaking ground on anything new.

Reclassification and Disputes

If you want to move land out of the agricultural district, or a neighbor disputes whether what you’re doing counts as a permitted use, the Land Use Commission is the first forum. It reviews evidence and hears public testimony before issuing decisions grounded in Chapter 205.¹ Community hearings give nearby residents and the county planning department a chance to weigh in, and reclassification petitions for high-productivity land are among the most contested cases the Commission sees.

Appeals from Commission decisions go to the Hawaii Circuit Courts. Mediation is available and often the right first step for neighbor disputes over noise, dust, or odors from farm operations. Litigation over land use in Hawaii is slow and expensive, and a negotiated resolution usually costs everyone less.

1
Land Use Commission – State of Hawaiʻi. About the Land Use Commission
2
Hawaii State Legislature. Hawaii Code Chapter 205 – Land Use Commission
3
Hawaii State Legislature. Hawaii Code Chapter 205 – Land Use Commission – Section: 205-4.5
4
Hawaii Office of Planning. Land Study Bureau Detailed Land Classification
5
Hawaii State Legislature. Hawaii Code 174C-2 – Declaration of Policy
6
Justia. Hawaii Code 343-5 – Applicability and Requirements
7
State of Hawaii Office of Planning and Sustainable Development. Environmental Review Program
8
U.S. Environmental Protection Agency. Exemptions to Permit Requirements under CWA Section 404