Washington County, OR Ordinances (2026)

Local rules and regulations for Washington County, Oregon. Population: 600,372.

Verified from official government sources

Note: County ordinances apply to unincorporated areas of Washington County. If you live within an incorporated city, that city's own rules take precedence over county-level regulations. We have city-specific rules for Beaverton, Hillsboro, Tigard, and Tualatin: check there if you live in one of those cities. All other areas in Washington County fall under the county rules shown below.

Browse Ordinances by Topic

Select a topic to see Washington County's rules on that subject.

Noise Ordinances

Short-Term Rentals

Fire Regulations

Parking Rules

Fence Regulations

Animal Ordinances

Landscaping Rules

Home Business

Swimming Pools & Spas

Accessory Structures

Environmental Rules

Cannabis Regulations

Solar Energy

Sign Regulations

Property Maintenance

Outdoor Lighting

Rental Property Rules

Trash & Recycling

Drone Rules

Food Trucks & Mobile Vendors

Soliciting & Door-to-Door

Curfew Laws

Building Setbacks & Zoning

Tree Protection

Garage & Yard Sales

Cities in Washington County

These cities are located within Washington County and may have their own ordinances.

Pop. 106,447

Pop. 97,494

Pop. 55,767

Pop. 27,907

Unincorporated Communities

These communities are in unincorporated Washington County. County ordinances apply directly to these areas.

AlohaPop. 53,828 BethanyPop. 31,350 Cedar Mill CDP (part), Washington County, OregonPop. 17,258 Oak HillsPop. 11,903 Bull MountainPop. 9,992 RockcreekPop. 9,862 West Haven-Sylvan CDP (part), Washington County, OregonPop. 9,203 Cedar HillsPop. 8,379 West SlopePop. 7,223 Garden Home-WhitfordPop. 7,081 Raleigh HillsPop. 6,196 Marlene VillagePop. 5,485 MetzgerPop. 4,272 Cherry GrovePop. 503 DilleyPop. 301

Data Sources

Ordinance data for Washington County is sourced from the following official government references. Click any topic above for detailed citations.

Show all 96 sources

[6]CWS
[7]WC CDC Zone Standards
[8]FAA Part 77
[9]OAR 918-750 Plumbing
[10]CWS Design Standards
[11]PCC Title 24
[12]OAR 918-480 ORSC
[13]WC Solid Waste
[14]Metro Recycling
[15]OAR 918-480
[16]ORS 105.550
[17]Oregon E-Cycles
[18]TVF&R Prevention
[19]ODF Forest Grove District
[20]ORS 419C.680
[21]ORS 377 Signs
[22]Tigard Municipal Code
[23]ORS 527 Forest Practices
[24]ORS 475B.245
[25]OLCC Recreational
[26]FAA Recreational Flyers
[27]ORS 837.300
[28]Oregon DLCD Coastal
[29]Statewide Planning Goals
[30]OAR 333-157
[31]FAA Part 107
[32]LAANC Info
[33]PCC 32.32 Signs
[34]Reed v. Town of Gilbert
[35]PCC 16.30
[36]ORS 819.110
[37]THPRD
[38]Metro Parks Code
[39]DEQ Modernization
[40]Washington County Code
[41]OAR 340-035
[42]Beaverton BDC 60
[43]ORS Chapter 467
[44]Washington County Long Range Planning
[45]Beaverton Tree Code
[46]ORS 30.930 Right to Farm
[47]Oregon BCD EV Code
[48]PCC 33.266 Parking
[49]PCC 32.32.020 Temp Signs
[50]ORS 377.700
[51]Oregon ELD Licensing
[52]OAR 918-305 Electrical Code
[53]ORS 94.762
[54]ORS 105.880
[55]ORS 496.730
[56]ODFW Living with Wildlife
[57]PCC Chapter 16.20
[58]PBOT Parking
[59]Portland Solar Permits
[60]OAR 918-310
[61]ORS 94.776 HB 2571
[62]Backyard Habitat Program
[63]PCC 24.70 Landslide
[64]PCC 29 Nuisance
[65]ORS 197.312
[66]Washington County Community Development Code (CDC 418, 413)
[67]Oregon Wildfire Hazard Map
[68]ORS 477.057
[69]Portland Garbage & Recycling
[70]PCC 17.102 Solid Waste
[71]ORS 616.706
[72]ODA Cottage Food
[73]ORS 90.427 Just Cause
[74]Source
[75]Gresham Rental Housing
[76]Source
[77]Municode Library
[78]Source
[79]PCC 32.32.030 Exempt Signs
[80]Source
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