In unincorporated Ada County, letting weeds, grasses or plant life grow over one foot in a way that creates a fire, safety or health hazard is a declared public nuisance. Cities like Boise and Meridian set their own limits.
Ada County's Nuisance Ordinance (Title 5, Chapter 9) does not set a flat lawn-height number, but declares it a nuisance when growth of weeds and grasses over one foot causes a fire hazard (dried, unkempt), a safety hazard (blocking sight at intersections/driveways) or a health hazard (harboring rodents or vermin). Incorporated cities apply their own thresholds: Meridian prohibits weed growth over eight inches, and Idaho Falls uses ten inches. Confirm whether your parcel is unincorporated Ada County or inside a city.
A public nuisance may be abated by the county after notice; abatement costs are charged to the owner and unpaid amounts can become a property lien.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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Ada County parks are day-use only and close at sunset. Overnight camping and parking is prohibited on any Ada County owned or leased park property except whe...
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Ada County limits light spilling onto neighbors. In commercial or industrial settings, the effective zone of light from bright fixtures may not trespass onto...
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Ada County's outdoor-lighting standards regulate glare and up-lighting to protect nighttime skies. Fixtures over 260 lumens must have an opaque top to preven...
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Garage-sale signs fall under Ada County's content-neutral temporary-sign rules. No permit is needed: residential lots may have up to six temporary signs, eac...
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Ada County's sign code is content-neutral, so it does not single out political signs. Temporary signs, including yard signs, are allowed without a permit: in...
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Ada County's zoning code treats a tiny home as a manufactured home. A tiny home used as a second unit must meet the secondary-dwelling standards of Section 8...
See how Ada County's grass height limits rules stack up against other locations.
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