Polk County, IA Ordinances (2026)

Industrial and utility uses in unincorporated Polk County must keep noise from being excessive at the lot line, and heavy-industrial and extractive/disposal uses require…

Outdoor events in unincorporated Polk County must meet the Polk County Noise Ordinance and obtain a sound permit if required, per the zoning code. Everyday amplified music is governed…

Unincorporated Polk County has no countywide decibel-based quiet-hours ordinance. Noise is handled as a nuisance and, for zoned uses, must not be excessive at the lot line. Inside Des…

Aircraft-in-flight noise is regulated federally by the FAA, not by Polk County. The county's zoning code references a 75-decibel noise cone defined by the Iowa DOT around airports and…

Above-ground pools in unincorporated Polk County need the same building and electrical permits and setbacks as inground pools. The pool wall itself can count as part of the required…

A Polk County pool must be enclosed by a four-foot-high barrier (wall, fence, or house wall). Fences used as a barrier must be at least 48 inches high, with gates self-closing and…

In unincorporated Polk County, letting litter, garbage, or organic waste accumulate on your property is a health nuisance. Storage in authorized receptacles subject to regular pickup…

Beyond height limits, Polk County requires swimming pools to be enclosed by a non-climbable fence at least 4 feet high with a self-latching gate, and livestock-confining fences to sit…

Polk County's zoning ordinance does not broadly ban residential fence materials such as wood, vinyl, or chain-link, but it requires chain-link with barbed-wire topping for certain…

Polk County's zoning ordinance requires fence posts and rails to face the property interior (finished side out) and bars any fence from blocking sight distance. It does not assign…

The Polk County Zoning Ordinance sets fence height rules but does not require a standalone fence permit for an ordinary fence within limits. A building permit IS required for any…

In unincorporated Polk County, a retaining wall over 4 feet tall needs a building permit and must be set back from any property line at least 1.5 times its height. Walls closer than…

Polk County caps single-family building height at 40 feet in agricultural districts and 35 feet in the residential and mixed-use districts. Accessory buildings cannot exceed the…

Unincorporated Polk County caps how much of a residential lot can be covered by buildings using Table 6.1 of the Zoning Ordinance, with limits set per zoning district from 5% in Estate…

Polk County's single-family bulk standards set minimum yard setbacks by zoning district. In Low Density Residential (LDR) the minimums are 35 feet front, 10 feet side, and 35 feet…

Iowa Code 321.89 lets a police authority impound a vehicle abandoned on public property (24-hour trigger) or private property. Separately, Polk County's Nuisance Regulation bans…

Polk County's rural county roads are largely uncurbed, so there is no county curb-color parking code; roadway traffic-control markings follow the state and MUTCD standards. Off-street…

The Polk County Zoning Ordinance requires off-street loading berths for buildings of 6,000+ square feet that need deliveries. Berth counts scale with floor area, each berth is at least…

Unincorporated Polk County bans parking on 136 specifically listed street segments once the most recent snowfall reaches one inch, measured by the National Weather Service in Des…

The Polk County Zoning Ordinance defines a commercial vehicle as any motor vehicle used for business or bearing a business sign; farm equipment is excluded. Off-street parking counts…

Polk County's Zoning Ordinance lets a licensed RV or camper be used as temporary shelter for up to 21 days a year (max 14 consecutive nights). Storing an unlicensed or inoperable…

In unincorporated Polk County, the Zoning Ordinance's access management standards control where a new driveway can connect to a road. Residential development must take direct access…

The Zoning Ordinance has no garage-sale-sign-specific rule. Small temporary/portable signs are treated as portable signs (a temporary sign permit, 14-day validity, 32 sq ft max) and…

Polk County lets temporary political signs go up without a sign permit, but only starting 70 days before the election they relate to, and only if they meet Iowa Code section 68A.406…

Polk County allows LED electronic displays on off-site billboards, but only under the standards of Iowa Administrative Code Chapter 117 Outdoor Advertising. On-site electronic message…

Off-site billboards in unincorporated Polk County are capped at 50 feet of height, must sit outside 100 feet of residential lots, schools and parks, need 1,000 feet of separation from…

Polk County Conservation parks are open 6:30 a.m. to 10:30 p.m. in summer and sunrise to sunset in winter. All visitors must leave before closing time, front gates are locked, and…

An accessory dwelling unit in unincorporated Polk County requires the property's legal owner to actually live there. Either the main house or the ADU must be the owner's legal…

Polk County's accessory dwelling unit rules stop an ADU from becoming its own separate property. The zoning ordinance bars selling, leasing, dividing or otherwise segregating an ADU's…

Unincorporated Polk County allows one ADU per property, up to 1,200 sq ft and no larger than the principal residence. The owner must live on-site, the ADU meets principal-dwelling…

A shed under 720 sq ft must sit at least 5 feet from side and rear property lines; larger sheds need 10 feet. Sheds must be at least 10 feet from the house, cannot exceed 24 feet in…

Unincorporated Polk County bars any standalone tiny home from qualifying as an accessory dwelling unit. The zoning ordinance's ADU rules cap a legal ADU at 1,200 square feet and…

Unmaintained vacant lots and abandoned or unsafe buildings in unincorporated Polk County are health nuisances. An "abandoned building" is one vacant and in code violation for six…

Polk County bans storing junk outside an enclosed building on any unincorporated property. Section 2-5(d) of the Health Nuisance Regulation names scrap metal, old lumber, inoperable…

Unincorporated Polk County requires stormwater detention facilities on developments that cannot directly discharge runoff, under the county Zoning Ordinance's Stormwater Runoff…

Unincorporated Polk County requires a Grading Permit for land-disturbing work exceeding three feet of fill, five feet of excavation, or 5,000 square feet of grading or clearing. The…

New or substantially improved homes in the unincorporated Polk County floodplain must have the lowest floor at least one foot above the 1% Annual Chance base flood elevation, built on…

Boat launching ramps, boat docks, piers and marinas are allowed in the floodway and floodway fringe of unincorporated Polk County, but only as a conditional use with added engineering…

Building in a special flood hazard area of unincorporated Polk County requires a Floodplain Development Permit from the Zoning Administrator before any work starts. The county uses the…

Unincorporated Polk County exempts farm houses, barns and outbuildings that are primarily adapted for agricultural use from its zoning ordinance entirely, as long as they stay in that…

Polk County requires every subdivision Owner's Association bylaws to grant the power to levy assessments against lot owners, to cover liability insurance and local taxes through member…

Any unincorporated Polk County subdivision with shared common areas must set up an Owner's Association, enroll every lot owner as a member, and file that association with the Iowa…

Unincorporated Polk County has no municipal sidewalk network; its obstruction rule instead covers the public road right-of-way. Chapter 46, Section 46.23.4 requires the Polk County…

In unincorporated Polk County, sidewalks never sit inside the public right-of-way at all. The Subdivision Ordinance only allows them on a private easement outside the road…

Before cutting a curb or creating any new driveway onto a county road in unincorporated Polk County, you need an entrance permit from the Public Works Department under Chapter 46, the…

In unincorporated Polk County, no one may start any development activity without a permit from the Building Official first. Polk County Construction Code § 20.1.2 puts the Building…

Unincorporated Polk County adopts the National Electrical Code (NFPA 70), as amended by the Iowa Electrical Examining Board, and requires a county permit for any electrical work…

Unincorporated Polk County builds to the International Energy Conservation Code as adopted and amended by the Iowa State Building Code Bureau, rebranded locally as the Polk County…

Unincorporated Polk County treats a home used for licensed day care as a regulated dwelling under Chapter 20 of its Construction Code. The county adopted the International Residential…

Unincorporated Polk County does not require automatic fire sprinklers in new one- and two-family homes. Section 20.2.4 of the Construction Code deletes the International Residential…

Unincorporated Polk County requires a carbon monoxide alarm whenever an existing home's furnace, boiler, or air conditioner gets replaced. The rule, added to the county's Mechanical…

Unincorporated Polk County requires a plumbing permit for work covered by the Uniform Plumbing Code (UPC), adopted as amended by the Iowa Plumbing and Mechanical Systems Board. Section…

Section 2-5 of the Health Nuisance Regulation lists the health nuisances Polk County most often abates: illegal litter and garbage dumping, mosquito-breeding standing water, and…

Complaints about a health nuisance in unincorporated Polk County go to the Public Works Health Officer, who has inspection and investigation power under Section 2-7(a) of the Health…

Unincorporated Polk County's zoning ordinance excludes tree of heaven (Ailanthus altissima) from the approved plant list developers must use to meet required landscaping bufferyards…

Polk County's landscaping rules flatly bar species known to be invasive in Iowa from any required bufferyard or site landscaping plan in the unincorporated county. Table 10.5 names…

Every mobile food unit operating in unincorporated Polk County must get a permit from Polk County Public Works at least three business days before starting, then renew the license…

Unincorporated Polk County only allows mobile food units in Mixed Use, Neighborhood Business, General Commercial, Light Industrial and Heavy Industrial zoning districts, never on a…

Animal hospitals, veterinary clinics, animal shelters and boarding kennels in unincorporated Polk County must keep outdoor exercise areas and animal shelter structures at least 200…

Unincorporated Polk County bars cockroaches, rodents or other vermin on any property once the Health Officer confirms they are present. Section 2-3(b) of the Health Nuisance Regulation…

Unincorporated Polk County awards a 5% density bonus, minimum 20-unit development, to Conservation Design subdivisions whose engineer proves added stormwater controls like bioswales…

Running an auto-repair business from a home in unincorporated Polk County is effectively blocked by the county's Home Occupation standards. Automobile dealers and other retail uses…

Polk County zones unlicensed massage establishments as an Adult Use, keeping them 1,000 feet from any residential district boundary or school and 500 feet from a church, day care or…

Every illuminated sign in unincorporated Polk County, including billboards, has to divert glare and keep light from crossing property lines or spilling into the road right-of-way under…

Polk County caps outdoor lighting on nonresidential property next to homes at 0.2 footcandles measured at the property line, and requires it to restrict glare and stop spill-over onto…

Polk County's zoning ordinance requires every exterior light fixture to use one of three defined cutoff types and caps illumination and pole height for each, from 0.20 footcandles and…

Polk County's Weed Commission explicitly does not handle complaints about trees or bushes. Tree-trimming disputes between neighbors are civil matters, and tree rules inside cities are…

Polk County's outdoor junk-storage ban carves compost piles out entirely under Section 2-5(d) of the Health Nuisance Regulation. The only outdoor yard-waste standard that survives is…

A tree with Dutch elm disease is a health nuisance under the Polk County Health Nuisance Regulation, and the county Health Officer can order it removed. The rule reaches unincorporated…

A home occupation in unincorporated Polk County cannot bring more traffic to the neighborhood and can serve no more than two customers at a property at one time. The zoning ordinance…

Unincorporated Polk County allows roof-mounted, building-mounted and ground-mounted Accessory Solar Energy Conversion Systems (ASECS) in every zoning district, but the installer must…