8 county-level rules, plus city-specific rules for 1 city in Benton County, Washington.
Verified from official government sources
Benton County treats overgrown grass, weeds, and rank vegetation as a nuisance handled on complaint by county code compliance, while Kennewick, Richland, and Prosser enforce their own property maintenance codes. In this desert, un-watered lots dry into a fire hazard.
No Washington statute limits pruning trees on your own Benton County lot, and this arid, light-canopy region has no general trimming permit. Cities like Richland and Kennewick control street trees and require limbs kept clear above sidewalks and streets.
Benton County and the Tri-Cities require no permit to remove a tree on your own established residential lot. In this arid, light-canopy region, tree-removal rules are far lighter than western Washington. Street trees remain city-controlled.
Benton County makes noxious-weed control mandatory. Under state law and the Benton County Noxious Weed Control Board, owners must eradicate Class A weeds and control listed Class B and C species. This is a real, enforceable duty backed by abatement and liens.
RCW 17.10.140(1)
Every owner must perform or cause to be performed those acts as may be necessary to: (a) Eradicate all class A noxious weeds; (b) Control and prevent the spread of all class B noxious weeds designated for control in that region within and from the owner's property; and (c) Control and prevent the spread of all class B and class C noxious weeds listed on the county weed list as locally mandated ...
Water is Benton County's defining constraint. Washington follows prior appropriation, and the Yakima River Basin is fully adjudicated. Irrigation districts deliver seasonal water by seniority, and junior rights face curtailment in drought years.
RCW 90.03.010
Subject to existing rights all waters within the state belong to the public, and any right thereto, or to the use thereof, shall be hereafter acquired only by appropriation for a beneficial use and in the manner provided and not otherwise; and, as between appropriations, the first in time shall be the first in right.
Rainwater harvesting is legal across Benton County. Washington's Department of Ecology allows rooftop collection without a water right, so rain barrels and cisterns for the garden are permitted. In a seven-inch-rain desert, every captured gallon helps.
Benton County's high desert makes native and drought-tolerant landscaping a natural fit, and no local rule forces a grass lawn on an existing lot. You may plant shrub-steppe natives freely, but listed noxious weeds must still be controlled.
RCW 17.10.140(1)
Every owner must perform or cause to be performed those acts as may be necessary to: (a) Eradicate all class A noxious weeds; (b) Control and prevent the spread of all class B noxious weeds designated for control in that region within and from the owner's property; and (c) Control and prevent the spread of all class B and class C noxious weeds listed on the county weed list as locally mandated ...
Benton County and the Tri-Cities do not regulate artificial turf on an existing residential lot, so installation is largely up to the owner. As a water-saving alternative it suits the arid basin. HOA covenants are the main limit.
1 cities in Benton County have their own landscaping rules rules. Each link goes to that city's dedicated page with code citations.
See every category we cover for Benton County — parking, noise, fences, fires, animals, pools, and more.
Benton County Ordinance Hub →