Hillsboro, OR Local Ordinances Guide

Hillsboro is a mid-sized city in Washington County, Oregon, with about 106000 residents. Like most cities its size, it has a set of local rules that may differ significantly from neighboring municipalities. Here is an overview of 117 ordinances across 37 categories that affect daily life in Hillsboro.

Special Events & Permits

Parade Permits: Every parade or procession using Hillsboro streets needs a special event permit issued under Hillsboro Municipal Code § 8.16.010, with narrow exemptions for escorted funeral processions, the U.S. armed forces and state military forces.

Also covered: Sidewalk Dining & Cafés (moderate), Park Event Permits (moderate), Street Fair Rules (restrictive). See the full special events & permits guide for Hillsboro for details.

Homelessness & Encampment Rules

Encampment Sanitation: Hillsboro requires anyone who authorizes camping on their property to provide sanitary sewage disposal, solid waste service, and screened storage for campers' belongings under HMC 9.44.020..

Also covered: Sit-Lie Rules (moderate). See the full homelessness & encampment rules guide for Hillsboro for details.

Animal Ordinances

Dog Leash Laws: Hillsboro requires dogs to be leashed off the owner's property. Washington County Animal Services enforces leash laws..

Also covered: Beekeeping (moderate), Pet Limits (moderate), Chickens & Livestock (moderate). See the full animal ordinances guide for Hillsboro for details.

Invasive Plant Rules

Prohibited Species: Hillsboro's Community Development Code bars nuisance plants, defined as species that are both invasive and non-native and appear on Oregon's noxious weed list or the Tualatin Soil and Water Conservation District's Weed and Pest Directory, from any landscaping required under Section 12.50.220. The ban applies to Type II and Type III development review in Washington County's Hillsboro; a homeowner's single detached dwelling or middle housing yard is exempt from this particular section..

Right to Farm

Farm Nuisance Protection: Commercial farms annexed into Hillsboro, Oregon keep operating under state farming rules, not the City's tighter residential livestock limits..

Public Health Rules

Rodent Control: In Hillsboro, Oregon, a property that is an actual or likely breeding place for rodents, flies or other pests is a public-health nuisance. Owners who let it happen face a $500 civil penalty and city-ordered abatement..

Accessory Structures

Garage Conversions: Hillsboro allows homeowners to convert an existing garage into an accessory dwelling unit (ADU) under Community Development Code § 12.40.100(C)(1), one of three recognized ways to create an ADU alongside adding new floor area or building a detached unit. The converted space must meet the same occupancy, floor-area, parking, height and setback standards in Subsection D that apply to every ADU, and needs approval under § 12.80.170 before construction..

Also covered: ADU Rules (moderate), Shed & Carport Rules (moderate). See the full accessory structures guide for Hillsboro for details.

Parking Rules

Commercial & Oversized Vehicles: Trucks of 16,000 pounds or more are limited to a specific list of designated streets in Hillsboro, and trucks of 10,000 pounds or more generally cannot park within a public street right-of-way at all, under Hillsboro Municipal Code § 8.20.010. Away from posted zones, a truck or large commercial vehicle can sit on a street, sidewalk or bike lane for only 30 minutes under § 8.12.020(D)..

Also covered: Overnight Parking (moderate), Abandoned Vehicles (moderate), Loading Zones (moderate). See the full parking rules guide for Hillsboro for details.

Noise from Specific Sources

HVAC & Mechanical Noise: Hillsboro caps noise from air conditioners, heat pumps and other mechanical equipment under its general sound ordinance: 60 dBA in daytime hours and 50 dBA overnight, measured at the property line closest to the source..

Also covered: Car Alarm Limits (permissive), Delivery Truck Noise (permissive). See the full noise from specific sources guide for Hillsboro for details.

Food Trucks & Mobile Vendors

Food Truck Permits: Food trucks and other mobile businesses in Hillsboro need a business license plus a mobile business permit, must move every 2 hours unless the site is pre-approved, and can only operate 8 a.m. to midnight in commercial zones..

Also covered: Vending Zones (restrictive), Sidewalk & Mobile Vending (moderate). See the full food trucks & mobile vendors guide for Hillsboro for details.

Local Taxes & Fees

Business Tax Classification: Hillsboro calculates its annual business license fee two ways: a base fee plus a per-employee charge for most businesses, or a base fee plus a per-unit charge for landlords renting more than 3 units..

Trash & Recycling

Illegal Dumping: Dumping more than one cubic foot of solid waste on public or private property without consent, or dumping along a creek or ditch bank, is a Hillsboro code violation carrying escalating civil penalties..

Also covered: Recycling Rules (moderate), Collection Schedule (moderate), Bin Placement Rules (moderate). See the full trash & recycling guide for Hillsboro for details.

Noise Ordinances

Construction Hours: Portable construction and lawn tools, saws, mowers, edgers, are exempt from Hillsboro's noise limits only between 6 a.m. and 9 p.m.

Also covered: Vehicle Noise (moderate), Amplified Music & Outdoor Sound (moderate), Leaf Blower Rules (moderate). See the full noise ordinances guide for Hillsboro for details.

Building Setbacks & Zoning

Setback Rules: In Hillsboro's SR-6 zone, the most common single-family and middle-housing district, front yard setbacks on interior lots run 20 feet to the dwelling or garage door, side yards are 5 feet, and rear yards are 20 feet, per Community Development Code § 12.21.450, Table 12.21.450-1. Every setback in the city is measured and enforced under the citywide standard in CDC § 12.50.130..

Also covered: Lot Coverage Limits (moderate), Structure Height Limits (moderate). See the full building setbacks & zoning guide for Hillsboro for details.

Curfew Laws

Juvenile Curfew: Hillsboro bars unaccompanied minors from public places overnight, 9:15 p.m. on school nights for kids under 14, midnight on weekends for older teens, unless with a parent or authorized adult..

Also covered: Park Curfew (moderate). See the full curfew laws guide for Hillsboro for details.

Sign Regulations

Freeway-Facing Signs: Hillsboro, Oregon (Washington County) caps freeway-facing billboards along the Sunset Highway (US 26) corridor at just two permits citywide, with height capped at 45 feet on bordering industrial land..

Also covered: Digital Billboards (moderate), Window Signs (moderate), Garage Sale Signs (limited). See the full sign regulations guide for Hillsboro for details.

Tree Protection

Heritage & Protected Trees: Hillsboro's code doesn't use the term 'heritage tree': it protects large 'specimen' trees by species and diameter, like Douglas firs over 24 inches or oaks and maples over 12 inches, from removal during development review..

Also covered: Parkway Planting (moderate). See the full tree protection guide for Hillsboro for details.

Mobility & Curb Rules

Shared E-Scooter Rules: Hillsboro requires a City-issued annual permit before any bicycle- or scooter-share company can operate here, and its share-program definition explicitly covers motorized scooters and e-bikes alongside bicycles under HMC 8.28.120..

Also covered: Bike Lane Rules (moderate). See the full mobility & curb rules guide for Hillsboro for details.

Short-Term Rentals

Short-Term Rental Permits: Operating a short-term rental in Hillsboro requires land-use approval before renting out space to paying guests for 30 days or less. Community Development Code § 12.40.230(B) sends partial-dwelling STRs, where the host stays on site, through the Type I process in § 12.80.126, and full-dwelling STRs through § 12.80.040; both host types must also carry a current City of Hillsboro business license under Subsections C.5 and D.4..

Also covered: Primary-Residence-Only Rule (restrictive), Host Presence Rule (restrictive), Repeat Violator Strikes (restrictive). See the full short-term rentals guide for Hillsboro for details.

Zoning Overlays & Bonuses

Downtown Design Guide: New residential and commercial construction, and any exterior alteration or demolition, inside Hillsboro's Downtown Plan District must replicate architectural styles characteristic of 1890s-1930s downtown buildings. Community Development Code § 12.61.800 sets specific garage, porch, foundation, siding, window, roof and lighting standards, plus a banned-materials list, enforced through Development Review approval rather than a fine, with a narrow exemption for structures inconsistent with or too deteriorated to meet the era..

Also covered: Density Bonus Law (limited). See the full zoning overlays & bonuses guide for Hillsboro for details.

Environmental Rules

Flood Elevation Requirements: New homes and additions built inside Hillsboro's Regulatory Floodplain Overlay must have the lowest floor, including any basement, elevated at least one foot above the Base Flood Elevation. The standard is enforced through a Floodplain Activity II permit reviewed by the City's Floodplain Administrator before construction begins..

Also covered: Stormwater Management (moderate), Erosion Control (moderate), Flood Zones (moderate). See the full environmental rules guide for Hillsboro for details.

Home Business

Signage Rules: A home business sign in Hillsboro is capped by the residential sign rules: 5 signs total per property, with one up to 6 square feet facing each street frontage, and smaller additional signs..

Also covered: Home Daycare (permissive), Customer Traffic Restrictions (moderate), Zoning & Home Occupation Permits (moderate). See the full home business guide for Hillsboro for details.

Building Safety

Electrical Permits: Hillsboro enforces electrical work through the state-adopted Oregon Electrical Specialty Code, and any permit the City issues is void if inspection approval doesn't occur within 6 months. A voided permit can be extended once or renewed once for a 50% fee, and solar and other alternative-energy installations are exempt from the permit fee itself..

Also covered: Plumbing Permits (moderate), Building Permits (moderate), Building Inspections (moderate). See the full building safety guide for Hillsboro for details.

Outdoor Lighting

Dark Sky Rules: Hillsboro requires full cut-off shielding on any exterior fixture emitting more than 900 lumens (roughly a 60-watt incandescent bulb) on land that goes through Type II or Type III development review. The Community Development Code caps the fixture's beam angle at 90 degrees to cut glare onto neighboring property..

Also covered: Light Trespass & Shielding (moderate). See the full outdoor lighting guide for Hillsboro for details.

Garage & Yard Sales

Frequency, Duration & Permits: Hillsboro limits household, yard and garage sales to one per property per calendar-year quarter, a maximum of four sales a year, and caps each sale at four consecutive days. HMC 5.24.010 sets the frequency and duration limits, while HMC 5.24.050 confirms no permit, fee or advance notice to the City is required to hold a qualifying sale..

Historic Preservation

Historic-Cultural Monuments: Hillsboro's Cultural Resource Overlay, Community Development Code § 12.27.320, prohibits altering, relocating or demolishing any property listed on the city's Cultural Resource Inventory without following Subchapter 12.27's approval process. Designation attaches to specific structures or features named in a City Council ordinance, requires the site be at least 50 years old or exceptionally significant, and property owners may refuse a City-initiated nomination before Council acts..

Business Licensing & Operations

Secondhand Dealers: Anyone buying, acquiring or reselling used regulated property in Hillsboro needs a City secondhand dealer or occasional dealer permit before doing business, issued only after a Police Chief background check..

Also covered: Pawnbrokers (moderate), Towing Companies (moderate), Auto Repair on Residential Property (restrictive). See the full business licensing & operations guide for Hillsboro for details.

Property Maintenance

Property Blight: Hillsboro can order owners of structurally unsafe, fire-damaged, or unsanitary buildings to repair or demolish within 120 days, or the City will vacate, demolish, and bill the owner for the cost..

Also covered: Snow & Sidewalk Clearing (moderate), Vacant Lot Maintenance (restrictive). See the full property maintenance guide for Hillsboro for details.

Cannabis Regulations

Buffer Zones: Hillsboro requires marijuana retail sales facilities to sit at least 1,000 feet from schools, other marijuana retailers, and active-use public parks or plazas, per Community Development Code § 12.40.194.C.6..

Also covered: Dispensary Zoning (moderate). See the full cannabis regulations guide for Hillsboro for details.

Public Conduct

Outdoor Smoking Restrictions: Smoking, vaping and tobacco use are banned on all Hillsboro public lands and facilities, at City-sponsored events, and in any City-owned vehicle or property, with narrow exceptions for unionized employees..

Also covered: Public Alcohol Use (restrictive), Skateboarding Rules (moderate). See the full public conduct guide for Hillsboro for details.

Fence Regulations

Material Restrictions: Hillsboro bans barbed, razor or similar wire fencing and electric fences along any sidewalk or public way, though barbed wire is allowed atop a fence at least 6 feet high if set back 6 inches, and electric fencing may enclose livestock on private property..

Also covered: Fence Permit Requirements (moderate), Height Limits (moderate), Retaining Walls (moderate). See the full fence regulations guide for Hillsboro for details.

Sidewalk & Pedestrian Rules

Encroachment Permits: Utility companies may extend meters and valves up to 1 foot into Hillsboro's public right-of-way only with Manager-approved plans, and only when no reasonable alternative exists, under HMC 10.16.010..

Also covered: Sidewalk Repair (moderate), Obstruction Rules (moderate). See the full sidewalk & pedestrian rules guide for Hillsboro for details.

Hotels & Lodging

Transient Occupancy Tax: Hillsboro charges a 3% Transient Lodging Tax on hotels, motels, inns, RV/tent sites, and short-term rental houses or apartments rented 30 days or less, collected by the operator and remitted monthly to the City..

Fire Regulations

Outdoor Burning: Hillsboro bans open burning of yard debris on any single or multifamily property inside city limits, at any time of year, under Hillsboro Municipal Code § 6.40.040(A). Recreational fires, barbecue equipment and certain public-agency fires for weed abatement or firefighter training stay exempt under state OAR rules, and even exempt fires still answer to the Fire Department and State Fire Marshal..

Also covered: Fireworks (restrictive). See the full fire regulations guide for Hillsboro for details.

Landscaping Rules

Tree Removal & Heritage Trees: Removing a mature tree, 8+ inches in diameter or a 30-foot conifer, during a Type II or Type III development application in Hillsboro requires City review, an arborist's preservation plan, and proof the removal is necessary..

Also covered: Water Restrictions (moderate), Weed Ordinances (moderate), Tree Trimming (moderate). See the full landscaping rules guide for Hillsboro for details.

Solar Energy

Panel Permits: Rooftop and ground-mounted solar panels are a permitted accessory use in every Hillsboro zone under the Community Development Code: no special land-use permit is required, only the standard building and electrical permits..

Soliciting & Door-to-Door

No-Knock Registry: Hillsboro homeowners can bar door-to-door solicitors by posting a readable 'no solicitors' sign, and entering to solicit a posted property, or defacing someone else's sign, is a code violation under HMC 5.40..

What to Do With This Information

If you are moving to Hillsboro, buying a home, or starting a project, use this as a starting point. Each category links to detailed pages with the full text, penalties, and FAQs. Verify anything time-sensitive with Hillsboro's city hall or code enforcement office.