The Washington State Liquor and Cannabis Board states the adult purchase and possession maximums and cites RCW 69.50.4013.
This is a plain-language summary, not legal advice. Laws and local rules change. Read the official sources at the bottom of this page.
Cannabis-friendly lawyers in Washington
Listed October 2026
These firms and attorneys are listed in the NORML lawyer directory for Washington. Cities and phone numbers below are taken from those listings.
Criminal defense and individual help
Gleam Law NORML directory
Aaron A Pelley · Seattle
Listed in the NORML lawyer directory for Washington as a criminal defense and marijuana lawyer in Seattle.
Source: NORML listing
Law Office of Kurt E. Boehl, PLLC NORML directory
Kurt Edward Boehl · Seattle
Listed in the NORML lawyer directory for Washington as a criminal defense and marijuana lawyer in Seattle.
Source: NORML listing
Goddard Wetherall Wonder PSC NORML directory
Scott Emmett Wonder · Bellevue
Listed in the NORML lawyer directory for Washington as a criminal defense and marijuana lawyer in Bellevue.
Source: NORML listing
Criminal defense
These lawyers defend cannabis and marijuana charges in Washington.
Emerald City Law Group
Seattle
Emerald City Law Group in Seattle says it defends illegal possession, cultivation, and unlicensed sale of marijuana.
Christian J. Phelps
Spokane
Christian Phelps in Spokane says he defends state and federal marijuana charges including possession, distribution, manufacturing, and cultivation.
Starting a cannabis business
These lawyers help with licensing, forming a company, and compliance for a cannabis business in Washington.
Cook and Bartlett
Seattle
Cook and Bartlett in Seattle says it forms cannabis companies and helps clients obtain and maintain producer, processor, and retailer licenses.
Gordon Thomas Honeywell
Seattle
Gordon Thomas Honeywell says it has guided applicants through Washington producer, processor, and retailer licenses and lists a Seattle office.
Not a referral. This list is not an endorsement, and there is no paid placement. We have not verified bar standing or discipline history. Before you hire anyone, confirm them in the Washington State Bar Association, and you can also use the Find Legal Help.
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What an adult may buy and possess
- The board says a person may buy and possess a maximum of one ounce of useable cannabis, 16 ounces of cannabis-infused product in solid form, 72 ounces in liquid form, and 7 grams of cannabis concentrate.
- In a vehicle, cannabis must be in the trunk or, if there is no trunk, in an area that is not occupied or accessible by the driver or passengers. The glove compartment is not acceptable.
- RCW 69.50.4013 says possession by a person 21 or older of an amount that does not exceed RCW 69.50.360(3) is not a violation of that section.
- The same statute says no person under 21 may manufacture, sell, distribute, or knowingly possess cannabis.
- The board says employers and landlords may set their own policies.