Grass Height Limits: Beaverton vs Tualatin

How tall can my grass legally grow in Beaverton?

Beaverton Code Chapter 5 (Public Nuisances) defines grass over 10 inches in height as noxious vegetation. Property owners must keep both the lot and the abutting public right-of-way (planting strip) below that height, except for exempt agricultural crops that do not create a fire, traffic, or health hazard.

What happens if I do not mow an overgrown yard in Beaverton?

The City of Beaverton will issue a public-nuisance abatement notice under Beaverton Code Chapter 5 with a typical 10-day cure period. If the owner does not abate the vegetation, the city will contract to mow the property, bill the cost back to the owner, and place a lien on the property for unpaid charges. Repeat violations may also draw civil penalties.

How tall can my lawn be in Tualatin?

Lawn grass must be kept at no more than 10 inches under TMC 6-4-090 and TMC 6-13-040. Grass taller than 10 inches between March 1 and October 31 is treated as noxious vegetation and is a code violation.

Does the 10-inch rule apply year-round?

The noxious-vegetation enforcement window in TMC 6-4-090 runs March 1 through October 31, the active pollen and seed-setting season. Outside that window the rule still governs landlord-maintained lawns under TMC 6-13-040.

Are native or pollinator yards exempt?

Designated wildlife habitat or conservation areas on public land or qualifying private property are not classified as noxious vegetation under TMC 6-04-060(3). Ordinary residential lawns gone tall are not protected by that exemption.