Tree Protection in Snohomish County, WA (2026)

1 county-level rule, plus city-specific rules for 4 cities in Snohomish County, Washington.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Snohomish County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Parkway Planting

Unincorporated Snohomish County requires street trees as a frontage improvement on new development under SCC 30.25.015(8). Trees go in along public roads and along private roads and drive aisles in residential projects inside urban growth areas, sized and spaced to the county's Engineering and Drainage Design Standards, with upkeep and liability falling on the property owner.

Street Tree Rules in Snohomish County

Some Restrictions

SCC 30.25.015(8)-(10)

(8) Street trees are required to be planted as frontage improvements along public roads and along private roads and drive aisles in residential developments within urban growth areas. Street trees are not required around turnarounds at the end of road network elements less than 150 feet in length. (9) Property owners shall be responsible for the maintenance (including pruning) and liability of ...

Full ordinance details →Official source ↗

Tree Protection by City in Snohomish County

4 cities in Snohomish County have their own tree protection rules. Each link goes to that city's dedicated page with code citations.

EverettPop. 110,629

2 verified rules • Parkway Planting, Protected Tree Species

MarysvillePop. 70,714

1 verified rule • Parkway Planting

EdmondsPop. 42,853

3 verified rules • Heritage & Protected Trees, Parkway Planting

LynnwoodPop. 38,568

2 verified rules • Heritage & Protected Trees, Parkway Planting

All Snohomish County ordinances

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