Mililani Town, HI

Construction noise on Oahu is governed by state rule HAR 11-46, not a standalone Honolulu ordinance. Even a community noise permit cannot authorize above-limit construction noise…

Any activity in an Oahu public park that produces sound above 80 dBA measured 10 feet from the source for five straight minutes is unlawful unless the city sponsors or permits it.

Honolulu owners can be cited when an animal makes noise continuously for 10 minutes, or intermittently for one-half hour or more, to the disturbance of any person, or when a dog barks…

Honolulu requires every motor vehicle and moped on public streets to run a working muffler that prevents excessive noise, and bans dummy mufflers, cut-outs and modified exhausts that…

A hair salon, dance studio or music school in one of Honolulu's apartment mixed-use zoning districts cannot pipe amplified music or run music instruction into the open air. ROH §…

ROH § 21-6.50(c) requires every off-street parking space, parking lot, and driveway on Oahu to be maintained with a dust-free, durable, all-weather surface. Only the preservation…

Where signs are posted, Honolulu bars leaving a vehicle in the same spot on a public street longer than 24 hours; a new violation accrues every three hours after the first citation.

Honolulu drivers must park parallel to the curb, headed in the direction of traffic, with wheels within 12 inches of the edge; parking against traffic outside a marked stall violates…

Honolulu bans parking commercial trucks, buses, vans and trailers over 10,000 pounds or 20 feet long on any public street for more than four hours, with narrow exceptions for active…

ROH § 21-6.60 sets two rules for electric vehicle charging stations on Oahu: charging equipment mounted on pedestals, lighting posts, or bollards must not impede pedestrian, bicycle…

Commercial vehicles with a valid decal may load or unload in a marked freight curb loading zone for up to 30 minutes, and never during restricted peak-hour tow-away times.

Leaving a vehicle unattended on an Oahu street or highway for more than 24 hours counts as abandonment, and the city can remove it and bill the owner.

Honolulu's curb loading zones must be painted yellow for freight, red for passenger and bus zones, or alternating yellow-red for combination zones, with signs posted for effective days…

Honolulu's Fire Code, ROH § 20-1.1 adopting NFPA 1 with local amendments, treats a backyard fire pit as regulated open burning. Before lighting a recreational, decorative, or…

When an addition is made to a Group R or I-1 building on Oahu, the existing structure must get single-station smoke alarms under the county's amended Existing Building Code.

The Honolulu Fire Code lets people burn outdoors only under listed conditions, and the fire department's Authority Having Jurisdiction can prohibit any open fire it judges hazardous…

Installing, dispensing or maintaining an LP-gas container on Oahu requires a Honolulu Fire Department permit under the city's amended Fire Code § 69.1.2.1, unless the tank is a…

ROH § 20-6.2 bans possessing, using, or exploding any consumer fireworks, aerial devices, articles pyrotechnic, or display fireworks anywhere in the City and County of Honolulu, and…

Honolulu charges its own Land Use Ordinance fee for every bed and breakfast home or transient vacation unit permit, separate from the 3 percent transient accommodations tax owners…

Honolulu requires every bed and breakfast home and transient vacation unit to post house rules imposing quiet hours between 10:00 p.m. and 7:00 a.m. for overnight guests.

ROH § 21-5.70-3(2)(C)(ix)(aa) lets Honolulu's planning director revoke a bed and breakfast home or transient vacation unit's registration at any time once the owner or operator has…

Renting rooms in an Oahu home for stays under 90 consecutive days is allowed only as a registered bed and breakfast home under ROH § 21-5.70-3, which confines the use to narrow zoning…

Bed and breakfast homes and transient vacation units anywhere on Oahu must register with the Department of Planning and Permitting before renting, submitting ownership proof, tax…

Every Honolulu bed and breakfast home or transient vacation unit must keep a scaled parking plan on file identifying available parking stalls for owners, guests, and service providers.

Honolulu's bed and breakfast registration requires the property to carry a real-property-tax home exemption and the applicant to hold at least a 50 percent ownership interest…

Honolulu caps overnight guests at short-term rentals: no more than two adults per sleeping room, and total adult occupants may not exceed twice the number of rooms offered for sleeping.

Every bed and breakfast home and transient vacation unit on Oahu must carry at least $1,000,000 per occurrence in commercial general liability insurance or homeowner's insurance with…

ROH § 21-2A.40 fines a hosting platform like Airbnb or Vrbo between $1,000 and $10,000 for each day it keeps facilitating bookings for a bed and breakfast home or transient vacation…

Home occupations across Oahu that host client visits must provide one extra off-street parking space for every four clients present at a time, beyond the dwelling's own required…

No onsite signs or advertisements are allowed for a home occupation anywhere on Oahu: the business must stay invisible from the street.

Honolulu allows in-home childcare as a home occupation for up to six kids, but the provider must hold a state license and follow strict staffing limits.

Honolulu permits home occupations in dwelling units islandwide when the business stays clearly incidental and subordinate to residential living, with no onsite signage, no outdoor…

Fences and walls in required yards across Oahu are capped at 6 feet, with front-yard fences banned in business and industrial districts and a 3-foot limit inside corner-lot visibility…

Honolulu caps retaining walls that hold back fill within a required yard at 6 feet, measured from grade to the top of the exposed wall face, under the Land Use Ordinance.

Honolulu's building code prohibits barbed or razor wire on any fence, with narrow exceptions for utilities, hazardous-material industrial sites, zoos, jails, government security sites…

A fence built anywhere on Oahu still needs a City and County of Honolulu building permit, but ROH § 18-6.1(b) exempts fence applications from the plan review fee charged on most…

You cannot trim, prune, remove or plant a tree in the public right-of-way along an Oahu street on your own say-so. ROH § 10-1.4 puts the Department of Parks and Recreation in charge of…

Honolulu bans removing or destroying any tree the City Council has designated "exceptional" under Chapter 40's tree-protection article; ROH § 40-8.8(a) makes it unlawful without…

Honolulu directs that new or renovated city-funded landscaping, buildings, parks, and housing developed with public money, incorporate indigenous and Polynesian-introduced plants…

Uncultivated, flammable weeds taller than 18 inches within 30 feet of a building in residential and apartment zoning districts are a declared public nuisance under Honolulu's Housing…

No building permit for a swimming, dipping, or wading pool anywhere on Oahu issues unless the plans include a fence, wall, enclosure, or a pool cover as an alternative protective…

ROH § 21-2.140-1(n) lets an existing, legally built accessory structure on Oahu, like a detached garage put up before September 14, 2015, convert into an accessory dwelling unit even…

Oahu accessory dwelling units are capped at 500 square feet on zoning lots up to 4,999 square feet and 1,000 square feet on lots of 5,000 square feet or more, and are barred entirely…

A one- or two-car carport or garage may encroach into a required front or side yard on Oahu only with a director-approved zoning adjustment, capped near 20 by 20 feet.

Owners must record a covenant limiting an accessory dwelling unit to long-term residential occupancy: no bed and breakfast or vacation rental use.

Every cat over four months old on Oahu must wear identification or carry a registered microchip under ROH § 12-6.2(a). Cats picked up without ID sit with the animal control contractor…

Honolulu does not single out any dog breed as inherently dangerous. ROH § 12-7.1 defines a dangerous dog purely by conduct, an unprovoked attack on a person or animal, and states…

Oahu beekeepers may keep up to eight honeybee hives per zoning lot in movable-frame hives, set at least 25 feet from any property line, street, sidewalk, or alley unless screened by a…

A stray dog impounded three or more times in 12 months in Honolulu must be spayed or neutered by animal control before its owner can redeem it.

Farm animals like pigs, cows, goats, sheep, horses, camels and llamas need enclosures set back 300 feet from every property line, ruling out most residential lots.

Street festivals anywhere on Oahu need a street activity permit, and inside the Waikiki special district the director may approve only two per four-month period each year.

Kailua Beach Park and Kalama Beach Park are closed to commercial activity around the clock, but ROH § 10-1.2(h)(1) carves out one weekend window for commercial filming. Crews with a…

A permit from the director of transportation services is required before any parade, march, or other activity that closes an Oahu street, with limited exceptions for military and…

Honolulu lets restaurants apply for revocable permits to operate outdoor dining on sidewalks, parklets, pedestrian malls, parks, and playgrounds islandwide, with a $50 application…

The City and County of Honolulu requires a Department of Parks and Recreation permit before using any park it controls for picnic groups of 50 or more people, camping, sports…

Throwing, dropping or dumping refuse or bulky waste on any street, alley, highway or public place anywhere on Oahu is banned, with fines up to $2,500 per violation under ROH §§ 42-1.10…

Large restaurants, hotels, food courts, markets, food manufacturers and hospitals across Oahu must separate food waste and deliver it to a recycling facility under Revised Ordinances…

Owners who don't clear bulky waste within 7 days of written notice create a public nuisance, and Honolulu can remove it and bill the cost plus interest under ROH § 42-4.8.

Refuse and recycling carts can go to the curb on or the evening before pickup day, must not block traffic or sidewalks, and must be removed from the street after collection day under…

Everyday household refuse for Honolulu pickup must go in a city-provided cart, or in manual-collection areas a durable 10-35 gallon lidded can under 75 pounds full, per ROH §…

Honolulu's Department of Environmental Services runs a mandatory islandwide curbside recycling program under ROH § 42-1.12, phased in by ordinance deadline starting July 1, 2007, with…

The Refuse Division administers island-wide trash and recycling collection for every building on Oahu under ROH § 42-1.3, unless the owner arranges a licensed private collector or an…

In manual-collection areas of Oahu, tree branches for pickup can't exceed 9 inches in diameter and green waste must be cut to 3-foot lengths in 50-pound bundles under ROH §…

Honolulu bars three-cubic-yard mechanical-handling refuse containers from streets and sidewalks. ROH § 42-1.4(e) requires them on the property they serve, placed where the collection…

Honolulu adopted the Hawai'i State Plumbing Code, based on the 2018 Uniform Plumbing Code, under ROH § 19-1.1. The code makes it unlawful to install, alter, repair, or replace a…

Reroofing on Oahu needs a building permit from Honolulu's Department of Planning and Permitting unless the building is a Group R-3 or U occupancy and the work will not adversely affect…

City and County of Honolulu facilities larger than 5,000 square feet must be designed to LEED Silver, the U.S. Green Building Council's minimum sustainability standard, under Revised…

Honolulu adopts the 2018 International Building Code by reference under ROH § 16-1.1 and rewrites its inspection article to require five checkpoints for any permitted project…

Honolulu adopted the National Electrical Code, NFPA 70, 2017 edition, as the State Electrical Code effective August 21, 2018, under ROH Section 17-1.1, with island-wide amendments to…

New buildings on Oahu must have carbon monoxide detection, and existing dwellings trigger the same requirement once a permitted addition, alteration, or repair crosses the Chapter 18…

New one- and two-family homes on Oahu only need fire sprinklers when fire department access or water supply falls short of code, not as a blanket requirement for every new house.

Honolulu's Fire Code, amended by ROH § 20-1.1, bars hibachis, grills, smokers, and similar cooking devices on balconies, under overhangs, or within 10 feet of any structure at…

Owners of vacant and improved lots across Oahu must keep their property free of weeds, garbage, trash, and waste at all times under ROH § 40-7.3. The Department of Planning and…

Under Revised Ordinances of Honolulu § 16A-10.2, any building on Oahu that the building official determines is substandard, unsafe, or endangers life, health, or safety is…

In the Waikiki special district, no one may sit or lie on a public sidewalk or on bedding, chairs, or other items placed on it, with exceptions for emergencies, disabilities, and free…

The City and County of Honolulu bans storing personal property on public property islandwide, authorizing impoundment of encampment belongings left on sidewalks, medians, or parks…

Honolulu's parks director can designate cultural sites inside Oahu's public parks under ROH § 10-6.2. Anyone may propose a site, and once the director approves, the Department of Parks…

City-installed street lighting fixtures in Honolulu must use full-cutoff or semi-cutoff designs that direct light downward, reducing glare and light pollution across Oahu.

ROH § 21-4.100 requires every commercial and industrial use on Oahu to shield outdoor lighting with full cut-off fixtures so no light spills directly onto an adjoining country…

Honolulu requires a written permit and $200 fee before anyone places walls, fences, or benches in the sidewalk area on Oahu.

Honolulu law bans blocking a public sidewalk between 6 a.m. and 10 p.m. islandwide, with exceptions for medical emergencies, permitted events, and people waiting in line who don't…

Any food truck, lunch wagon, or mobile food vendor selling on a public street, sidewalk, or highway anywhere on Oahu needs an annual peddler's license from the city under ROH §…

In Chinatown, College Walk Mall, Sun Yat Sen Mall, and Historic Moiliili, a store's food peddling on the adjoining sidewalk can't include on-site cooking, cutting, or food prep.

Food trucks and lunch wagons selling on Oahu streets must move every 3 hours and can't return within 300 feet for 3 hours after leaving.

Honolulu bans aggressive panhandling within 10 feet of any ATM, ATM facility, or check-cashing business anywhere on Oahu. The ordinance defines six specific behaviors that cross the…

Smoking is banned islandwide in all public parks, recreation areas, and facilities run by the parks or enterprise services departments, plus within 20 feet of any bus stop.

No one may go, remain, loiter, or play games on any public school building or grounds anywhere on Oahu without lawful business or an excuse, under ROH § 41-25.1. A violation is…

No one may possess an open container of intoxicating liquor on any Oahu street or sidewalk, or in any public park, playground, school ground, or public parking lot, under ROH §…

Homes in windborne debris regions on Oahu must have glazed openings protected against flying debris, either with impact-rated glazing or approved wood-panel shutters.

After a hurricane or other disaster on Oahu, ROH § 42-4.7 authorizes Honolulu's environmental services director to waive the refuse collection and disposal charges set by the article…

Honolulu requires an approved erosion and sediment control plan for any land-disturbing activity needing a building, grading, stockpiling, or trenching permit.

Any development in Honolulu's general floodplain zone A needs the director's review and approval before construction begins.

In Oahu's flood fringe zones AE and AH, new residential construction and substantial improvements must have the lowest floor, including basements, elevated to or above the base flood…

Honolulu bans dumping pollutants or unpermitted effluent into drainage facilities and requires a chief engineer permit for any non-stormwater discharge into the city's storm sewer…

Oahu law caps electric bicycle motors at 750 watts, permits use on streets, highways, alleys, paths, and trails, and requires safe, seated, forward-facing riding at all times.

Shared e-scooters and other shared micromobility vehicles need a city parking permit, and riders may not park them on sidewalks, streets, or blocking traffic, bus stops, or driveways.

Honolulu bars driving, parking, stopping or standing any vehicle other than a bicycle in a marked bicycle lane, with narrow exceptions for emergency and utility vehicles; violators…

Honolulu exempts political campaign signs from the Land Use Ordinance's sign-permit system entirely: ROH § 21-7.60(b)(10) says no permit is required and district sign regulations don't…

Honolulu's sign code classifies any electronic programmable message sign, digital display, plasma or LED sign, or video/holographic sign as a "flashing sign," and ROH § 21-7.30(e)…

Honolulu doesn't count a store's window display as a regulated "sign" at all, so it skips the Land Use Ordinance's permit and sign-area limits, but ROH § 21-7.20 still confines any…

Oahu law treats any garage-sale sign posted in a street right-of-way, on a medial strip, or on a public mall as an unlawful sign subject to immediate removal by the city.

Honolulu does not issue a dedicated "solicitor permit." ROH § 13-5.1 instead makes it unlawful for a solicitor or canvasser, anyone taking door-to-door orders for future delivery of…

Honolulu requires anyone doing business as a secondhand dealer anywhere on Oahu to hold a license from the director of budget and fiscal services, issued under HRS Chapters 445 and…

Vehicle repair or painting is banned as a home occupation unless it's five or fewer household-owned vehicles per year.

Honolulu requires a city panoram license to run adult peep-show booth businesses and sets a minimum 6-foot aisle so every booth stays visible to staff and inspectors.

The City and County of Honolulu requires a minimum 10-foot front yard and 5-foot side and rear yards for single-family homes across the R-3.5 through R-20 residential districts, per…

New Oahu dwellings built under permits filed after May 1, 2019 cannot cover more than 75 percent of the zoning lot with impervious surface, on top of the 0.7 floor area ratio cap.

Houses in Honolulu's residential zoning districts, R-3.5 through R-20, must fit inside a building envelope that tops out between 25 and 30 feet, formed by the intersection of two…

Oahu's AG-1 and AG-2 zoning districts exist specifically to conserve farmland and keep incompatible uses off agricultural land.

Honolulu has no standalone data center zoning category: the Land Use Ordinance folds data storage centers into the general office use class islandwide.

In Honolulu's B-2 community business district, ROH § 21-3.110-1(c)(5) lets developers build more floor area than the base zoning allows by dedicating land to public open space or…

New construction and renovation in Honolulu's Hawaii Capital Special District, the downtown civic core around the State Capitol, Iolani Palace and King/Beretania Streets, must follow…

Oahu's public parks close overnight under posted hours, and entering or staying in a park after closing is unlawful citywide, with a narrow exception to reach the shoreline at beach…

Honolulu requires new homes to be built solar-ready, with an electrical panel sized to accommodate a future rooftop photovoltaic system.

Honolulu must approve or deny rooftop solar permit applications within 14 calendar days, or 28 days for projects over $50,000.

Every dwelling unit, lodging house, and congregate residence across Oahu must have a bathroom with a toilet, sink, and tub or shower, plus a kitchen with a sink, under Honolulu's…

Honolulu levies a 3 percent transient accommodations tax on gross rental income from hotels and other transient lodging, collected by the city on top of state taxes.

The Department of Parks and Recreation, not individual property owners, controls Oahu's street trees: ROH § 10-1.4 directs the director to adopt formal rules governing planting…

Residents anywhere on Oahu can report a suspected Housing Code violation by filing a signed, written complaint with the Dept. of Planning and Permitting's building official, who must…

Honolulu's Land Use Ordinance requires any bar, nightclub, minor or major establishment to sit at least 300 feet from the nearest country, residential, apartment, or apartment…