Unincorporated Yellowstone County sets no general lawn-height rule; that is a city matter. Inside Billings, weeds, grass, and untended vegetation may not exceed twelve inches (12") in height from April 30 through September 30.
Montana counties do not impose a citywide grass-mowing standard on rural unincorporated land, so no county height limit applies there. The City of Billings, the county seat, defines 'nuisance weeds' as all weeds, grasses, noxious weeds, and untended vegetation growing in excess of twelve inches (12") in height on any premises. Property owners must cut or remove them during the weed season, roughly April 30 through September 30. If you live outside city limits, check whether your area falls under a county zoning district; most rural parcels have no mowing requirement beyond the mandatory noxious-weed control duty in state law.
In Billings the City may cut the weeds and bill the cost plus a 25% administrative charge, plus a $25 fine (first offense; $50/$75 for repeats); unpaid charges become a property lien.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Billings, MT
Montana preempts local minimum wage ordinances under MCA section 39-3-409. The state minimum is CPI-adjusted to roughly $10.55 per hour. Billings cannot enac...
Billings, MT
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Billings, MT
Billings hotel guests pay roughly 11 percent in Montana lodging taxes: 7 percent lodging facility tax plus 4 percent sales-on-lodging tax. Montana has no gen...
Billings, MT
Public urination and defecation are misdemeanors in Billings under BMC Chapter 25 disorderly conduct and Montana state indecent exposure laws. Downtown bar d...
Billings, MT
Billings cites residents for hosting loud parties under disorderly conduct provisions in BMC Chapter 25 and quiet-hours noise rules in BMC Chapter 17. Repeat...
Billings, MT
Billings prohibits aggressive panhandling near ATMs, bus stops, and outdoor dining under BMC Chapter 25. Passive sign-holding remains protected speech, but c...
See how Billings's grass height limits rules stack up against other locations.
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