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Walla Walla County, WA Property Maintenance: Vacant Lot Maintenance (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Maximum average height
12 inches, visible from road or neighbors
2+ acre alternative
mow a fire/rodent barrier instead
First offense fine
$75.00 civil infraction
Subsequent offense fine
$250.00 each
Right-of-way weeds
separately banned if a sight/fire hazard
Enforcing agencies
Sheriff, Community Development

Summary

A vacant lot in unincorporated Walla Walla County must keep grasses and weeds to an average height of twelve inches wherever it is visible from adjacent roads or properties, under Walla Walla County Code Section 8.24.010(B)(5)(b). Owners of vacant parcels two acres or larger can instead mow a fire and rodent barrier around the property to comply.

These county ordinances apply to unincorporated areas of Walla Walla County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

b.Grasses or weeds not maintained to an average height of twelve inches on any property visible by ordinary view from adjacent roads or properties if the property is a vacant lot; provided, that vacant properties with an area of two or more acres may comply with this requirement by mowing an adequate fire/rodent barrier around the property

Full Breakdown

Section 8.24.010(B)(5)(b) applies the county's weed-height nuisance rule to vacant lots on property zoned in any urban classification under Title 17: grasses or weeds must not average more than twelve inches where visible by ordinary view from adjacent roads or properties. The subsection gives vacant-lot owners with two or more acres an alternative path to compliance, letting them mow an adequate fire and rodent barrier around the property instead of clearing the whole parcel. The rule sits alongside (B)(5)(c), which independently bans uncontrolled or uncultivated weeds and brush within the road right-of-way that create a sight hazard or that a county fire marshal or fire district chief declares a fire hazard, and (B)(5)(d), which exempts vegetation grown for agricultural purposes entirely.

A related zoning provision, Chapter 17.36 on nonconforming uses, governs how a vacant lot's development rights are treated separately from this maintenance rule and does not alter the weed standard itself. Enforcement of the vacant-lot weed rule tracks the rest of Section 8.24.010: violations are civil infractions under Section 8.24.020(B), notices can be issued by the Sheriff, the public health administrator, or the Community Development director, and each day of noncompliance can be charged separately. Fire-hazard-declared overgrowth instead becomes a misdemeanor under RCW 9A.20.021 per Section 8.24.020(A), and repeat or large-scale violators who ignore a Chapter 14.13 notice commit a gross misdemeanor under Section 14.13.100.

Violations & Fines

A first violation of the vacant-lot weed rule is a $75.00 civil infraction under Section 8.24.020(B); each subsequent offense is $250.00, with each day of overgrowth potentially a separate violation. Weeds declared a fire hazard by the county fire marshal or a fire district chief instead become a misdemeanor under RCW 9A.20.021, and ignoring a Chapter 14.13 enforcement notice is a gross misdemeanor under Section 14.13.100.

Frequently Asked Questions

Do vacant lots have to be mowed in unincorporated Walla Walla County?
Yes. Section 8.24.010(B)(5)(b) requires grasses and weeds on a vacant lot to average no more than twelve inches wherever visible from adjacent roads or properties, treating overgrowth as a nuisance.
Is there an exception for large vacant parcels?
Yes. Owners of vacant properties two or more acres in size can comply by mowing an adequate fire and rodent barrier around the property instead of clearing the entire twelve-inch standard across the whole lot.
What if weeds on my vacant lot spill into the road right-of-way?
Section 8.24.010(B)(5)(c) separately prohibits uncontrolled, uncultivated weeds or brush in the right-of-way that create a sight hazard to vehicles or that the county fire marshal or a fire district chief declares a fire hazard.
What's the penalty for an overgrown vacant lot?
Under Section 8.24.020(B), a first violation is a $75.00 civil infraction and each subsequent offense is $250.00, with the Sheriff, the public health administrator, or the Community Development director authorized to issue the citation.

Sources & Official References

Other rules in Walla Walla County

All Walla Walla County rules

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