Kaneohe's Landscaping Rules: The Rules That Matter

Every city handles landscaping rules a little differently. In Kaneohe, Hawaii, there are 9 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Grass Height Limits

Kaneohe properties from Kaneohe Bay to Haiku Valley must keep vegetation from becoming a public nuisance under ROH Chapter 16A, which targets fire and vermin hazards.

Key details: Code: ROH Chapter 16A, Article 2. Compliance window: 30 days after notice. Enforcement: Planning and Permitting. Height limit: Not specifically codified.

DPP issues written notice. Failure to abate within 30 days authorizes city entry to cut vegetation, with costs billed back to the owner.

Weed Ordinances

Vacant parcels in Kaneohe, including large lots in Haiku Valley and along Kahaluu, are subject to 30-day weed abatement notices under ROH Chapter 16A.

Key details: Code: ROH Sec. 16A-2.1 et seq.. Notice period: 30 days to comply. Remedy: City abatement at owner cost. Scope: Vacant and improved lots.

Failure to abate within 30 days allows city entry and removal. The owner is billed for abatement, collectable as a property lien if unpaid.

Tree Trimming

Kaneohe homeowners along Kamehameha Highway and Kahekili Highway must obtain an Urban Forestry permit before trimming street trees under ROH Sec. 10-1.4.

Key details: Code: ROH Sec. 10-1.4. Permit issuer: Parks and Recreation Urban Forestry. Scope: Public right-of-way trees. Exceptional trees: ROH Chapter 40, Article 8.

Unpermitted trimming can result in citation and arborist-assessed restitution, including replanting orders at the property owner's expense.

Rainwater Harvesting

Kaneohe's high rainfall makes rainwater collection practical; exterior systems up to 360 gallons need no permit, and BWS offers rain barrel rebates.

Key details: Permit threshold: 360 gallons storage. Code reference: Hawaii Plumbing Code Ch. 16. Rebates: BWS rain barrel program. Indoor use: Requires plumbing permit.

Unpermitted plumbing connections or cross-connections to the potable supply can trigger BWS enforcement; exterior-only catchment systems are not regulated.

The rules around rainwater harvesting in Kaneohe lean permissive, but that does not mean anything goes.

Water Restrictions

Kaneohe irrigation follows Board of Water Supply drought schedules; ROH Chapter 30 Sec. 30-2.3 frames the city's water management and conservation policy.

Key details: Code: ROH Sec. 30-2.3. Operator: Board of Water Supply. Drought stages: 1 through 4. Focus: Day and time-of-day limits.

BWS warns first offenders and may escalate to fines or flow restrictors during declared shortage stages for repeat violators.

Tree Removal & Heritage Trees

Kaneohe property owners cannot remove registered exceptional trees, including monkeypods near Kaneohe Bay and Hoomaluhia, without a Parks and Recreation permit.

Key details: Code: ROH Secs. 40-8.1 to 40-8.9. Permit issuer: Parks and Recreation. Emergency removal: Sec. 40-8.9 process. Street trees: See ROH Sec. 10-1.4.

Unpermitted removal or destruction can result in fines, mandatory replacement plantings, and misdemeanor prosecution for repeat offenders under Chapter 40.

This is not one of those rules that cities tend to ignore. Kaneohe actively enforces its tree removal & heritage trees requirements.

Native Plants

Kaneohe landscaping may substitute native Hawaiian species for standard plantings under LUO Sec. 21-4.70; no native-only mandate exists.

Key details: Code: LUO Sec. 21-4.70. Mandate: None, substitution allowed. Local resource: Hoomaluhia Botanical Garden. Guidance: BWS Xeriscape Program.

No penalties for non-native choices, but commercial projects may face delayed LUO approvals if landscape area plans fail buffer and screening requirements.

The rules around native plants in Kaneohe lean permissive, but that does not mean anything goes.

Artificial Turf

Kaneohe residents can install artificial turf on private property; LUO Sec. 21-4.70 controls whether it satisfies commercial landscape requirements.

Key details: Code: LUO Sec. 21-4.70. Residential use: Permitted, no permit. Commercial use: DPP discretion. Drainage concern: Near bay and streams.

No residential penalties exist. Commercial projects relying on turf for landscape area may face redesign if DPP rejects the substitution during review.

If you are coming from a city with tighter rules, you will find Kaneohe gives residents more flexibility on artificial turf.

Composting

Kaneohe residents and food businesses follow ROH Sec. 42-3.5; curbside food scrap collection is being phased in under the islandwide G.R.O.W. Program.

Key details: Code: ROH Sec. 42-3.5. Program: G.R.O.W. curbside. Start date: April 1, 2025. Commercial duty: Mandatory diversion.

Commercial non-diversion can trigger escalating fines under Chapter 42. Residential setout violations may result in uncollected carts and administrative citations.

The Bottom Line

Compared to many U.S. cities, Kaneohe gives residents more room on landscaping rules. 3 of the 9 rules here are rated permissive. But permissive does not mean unregulated. There are still requirements, and the city does enforce them when violations are reported.

These rules come from Kaneohe's publicly available municipal code. For complete penalty schedules, exemption details, and answers to common questions, see the individual ordinance pages throughout this guide.