Linn County, IA Ordinances (2026)

Linn County requires a stormwater pollution prevention plan for major subdivisions and other land-disturbing permits, and won't issue a building or subdivision permit until its soil…

Any manmade change to land within Linn County's mapped floodplain, including new buildings, grading, filling, or excavation, needs a floodplain development permit from the zoning…

Unincorporated Linn County requires a stormwater pollution prevention plan for major subdivisions and any county-permitted land-disturbing activity that triggers NPDES Phase II…

In Linn County's floodway fringe district, new or substantially improved homes must have their lowest floor at least two feet above the base flood elevation, exceeding many area…

Detached garages, sheds, and other accessory structures on Linn County lots up to half an acre are capped at 15% lot coverage; larger lots up to 3 acres get 10% or 3,200 square feet…

Unincorporated Linn County caps residential structures at 35 feet in the RR3 Rural Residential district, with taller allowances only for utilities and communication or wind towers.

Linn County's Agricultural District, the county's default rural zoning, requires a 50-foot front yard, 50-foot corner side yard, 35-foot rear yard, and 10-foot side yard for principal…

Off-street parking lot lighting in unincorporated Linn County must point downward and away from homes and public streets: the code treats spillover light onto residential property as a…

Linn County has no blanket dark-sky ordinance, but its zoning code requires off-street parking lighting to be shielded and aimed downward and away from neighboring homes and public…

Ground-mounted solar in unincorporated Linn County needs a minor site plan and all permits before construction; roof-mounted systems need permits too, following the applicable building…

On county-owned parking facilities and other county property, the sheriff or the board's designee may tow a vehicle left unattended more than 48 hours without plates or key parts, or…

Linn County's board of supervisors can designate any county road as a no-parking zone by resolution, on the county engineer's recommendation, and must post signs marking each zone as…

In unincorporated Linn County's agricultural and residential districts, off-street parking can't sit in the required front yard except inside a legal driveway, and every parking area…

Every county road in Linn County becomes a snow route once snow tops one inch or any freezing rain falls: parking or standing in the road right-of-way is banned until 48 hours after…

Commercial and industrial buildings in unincorporated Linn County must provide off-street loading berths: one for the first 10,000 square feet, plus an extra berth per additional…

Iowa adopts the IRC under Iowa Code Chapter 103A (State Building Code). Residential pool barriers must be at least 4 ft high with no openings allowing a 4-inch sphere. Linn County…

Unincorporated Linn County requires a building permit under the adopted 2024 International Building and Residential Codes for most new construction, additions, and alterations, though…

Unincorporated Linn County requires electrical work to follow the 2023 National Electrical Code and 2006 ICC Electrical Code, covering wiring, fixtures, and equipment installed…

Unincorporated Linn County plumbing work must follow the state-adopted Uniform Plumbing Code, 2024 edition, covering installation, alteration, and repair of any plumbing system in the…

Unincorporated Linn County requires non-owner-occupied rental homes to register as a "permitted rental unit" and pass a housing-code inspection, earning a certificate of inspected…

In Linn County's Critical Natural Resources District, removing more than 10 percent of a parcel's trees, or 20 trees ten inches or wider, needs an approved vegetative management plan.

Linn County stripped the weeds section from the property maintenance code it adopted, so unincorporated parts of the county have no general grass or weed height limit outside licensed…

Unincorporated Linn County caps livestock and poultry by lot size in residential-zoned districts: one large animal per acre, three sheep or goats per acre, and up to twelve fowl or…

Keeping wolves, big cats, bears, primates, venomous snakes and dozens of other wild species in unincorporated Linn County is banned without a board-issued dangerous animal permit.

Linn County has no breed-specific dog ban; instead it declares any animal that bites or attacks without provocation "vicious" and requires its surrender for euthanasia.

Linn County bans letting any animal run at-large in the unincorporated county, with impoundment and rising civil penalties for repeat violations.

Habitual barking, howling or yelping that disturbs a neighbor's peace is a county infraction in unincorporated Linn County, unless the animal is properly licensed and kenneled.

Outdoor amphitheaters and stadiums in unincorporated Linn County must sit at least 500 feet from residentially zoned land, get county-approved hours of operation, and mitigate noise…

Linn County requires all-terrain vehicles and off-road utility vehicles operating on county-designated roadways to carry a muffling device that meets Iowa's ATV noise standard; running…

Large gas-fired power plants and nuclear facilities in unincorporated Linn County can't exceed 55 dBA near homes (65 dBA elsewhere), and routine noisy maintenance is limited to weekday…

Unincorporated Linn County requires a conditional use permit for any adult entertainment business, renewed every five years, with a major site plan, 1,000-foot buffers from homes and…

Linn County bars vehicle, RV, and boat maintenance, repair, body work, or painting from qualifying as a home occupation anywhere in the unincorporated county, though owners can still…

Linn County requires a retail cigarette or tobacco products permit before any store in the unincorporated county can sell vapes or nicotine delivery systems, and bans open…

Linn County caps home-occupation signs at 8 to 32 square feet depending on lot size, limits them to five feet in height, and bans illumination entirely under the county's home…

Unincorporated Linn County treats in-home family day care for five or fewer children as a use permitted by right under the zoning code, with no site plan or conditional-use review…

A Linn County home occupation stays permit-free only if it draws five or fewer customer or client visits a day, with no more than three people on-site at once: cross either line and…

Small home-based businesses in unincorporated Linn County can run without a permit, but adding a nonresident employee or expanding into an accessory building triggers a conditional use…

Linn County's code defines commercial cryptocurrency mining as a data center use, so a mining operation must clear the same EU-3 rezoning, site plan, setback, and noise rules as any…

Data center equipment in Linn County's EU-3 district is capped at 55 dBA/65 dBC near homes and 65 dBA/75 dBC elsewhere, with testing and construction noise limited to weekday daytime…

Large-scale data centers in unincorporated Linn County must rezone into the EU-3 district, file a major site plan, and meet a 200-foot property-line setback plus a 1,000-foot…

In unincorporated Linn County, yard waste like grass, leaves and tree limbs may be burned under an open burning permit, but burning is banned near Cedar Rapids, Hiawatha and Marion.

In unincorporated Linn County, yard waste, grass clippings, leaves, garden waste, brush and trees, must be kept separate from household garbage, composted on-site, or hauled to an…

Campfires and outdoor fireplaces in unincorporated Linn County are exempt from the open burning permit if they burn untreated wood, are used for recreation, and stay under three feet…

Unincorporated Linn County bans open burning of combustible materials unless the fire type is listed and a permit is obtained from the air pollution control officer, with narrow…

Iowa Code §727.2 (HF 540, 2017) legalized consumer fireworks but lets counties limit use to July 3, July 4, and December 31. Linn County Resolution 2019-5-83 (updated June 17, 2025)…

Linn County's property maintenance code requires smoke alarms in every covered dwelling with no exceptions: the county deleted all three exemptions the standard International Property…

Unincorporated Linn County caps residential fences and freestanding walls at 8 feet in agricultural and rural residential districts, dropping to 7 feet in village and urban service…

In unincorporated Linn County, a fence or freestanding wall only needs a zoning permit when the fence itself would require a building permit: most residential fences under the height…

Linn County requires a zoning permit for any retaining wall over 6 feet tall that also needs a building permit, with height measured from the lowest ground point next to the wall.

Unincorporated Linn County adopts the International Property Maintenance Code as its housing code, setting minimum safety and sanitation standards for every non-owner-occupied rental…

Unincorporated Linn County caps detached sheds and other accessory structures at 25 feet tall in most residential districts, with a 10-foot side setback that can shrink to 3 feet…

Linn County allows one accessory dwelling unit per parcel with an existing single-family home, capped at 1,200 square feet or half the main house's size, whichever is larger.

Unincorporated Linn County treats garage sale signs as temporary signs: 32 square feet max, under 12 feet tall, and pulled down within 30 days of the sale.

Linn County permits digital billboards in HC, GC and I districts, but requires each message to hold for at least one second, bans full-motion video, and keeps digital advertising signs…

Farm houses, barns, and other agricultural buildings in unincorporated Linn County are exempt from the entire zoning chapter as long as they're actually used for farming: floodplain…

Land, farm buildings and structures used for agriculture are exempt from unincorporated Linn County's zoning rules, and state-designated agricultural areas are exempt from county…

Unincorporated Linn County adopted the 2024 International Property Maintenance Code, requiring structures and premises to stay safe, sanitary, and fit for occupancy, with county…

Linn County's mobile home park code requires grounds and structures be kept free of rodent and insect harborage, with extermination methods meeting county health department standards…