Cerro Gordo County, Iowa Building Permit Guide

Outside city limits in Cerro Gordo County, the Planning and Zoning office at the courthouse, 220 N. Washington Ave., Mason City (641-421-3075), issues the zoning permit needed to build, add to, move or alter any structure, from houses and decks to fences and sheds on skids. The fee runs from $25 for work under $5,000 to $1,000 over $750,000 and is charged only after review; the county ordinance list contains no building code, and each of the 11 cities issues its own permits.

What requires a permit in rural Cerro Gordo County?

Article 22 of Zoning Ordinance No. 15 makes it unlawful to grade, erect, construct, reconstruct, enlarge, alter or move any building or structure until the Zoning Administrator has issued a zoning permit, and a permit is also needed to change the use of a building or land or a nonconforming use. The county’s permit page names the common cases.

The agricultural exemption is not automatic. The county asks for a zoning permit application to decide whether a structure qualifies; it does if the parcel or group of parcels is at least 10 acres, zoned A-1, outside a floodplain, used for agriculture and has any Public Health approvals, and then no fee is charged. A second house on the same parcel, a horse stable, a hobby farm and anything in a floodplain never qualify. Fences on residential lots may be 6 feet high in side and rear yards; on a lake lot the limit is 3 feet in the front yard and the rear yard. Swimming pools must be enclosed by a wall or fence from 5 to 6 feet high.

What the county decides and what the state holds

The county permit is a zoning permit: it checks use, lot size, setbacks and floodplain location rather than framing or wiring. The supervisors first adopted Zoning Ordinance No. 15 on March 13, 1990; the copy posted today is the revision of December 13, 2022, and the Planning and Zoning Commission has held work sessions to “Review Draft Zoning Ordinance” on September 24, October 15 and November 5, 2026; no new ordinance had been adopted in the records read. None of the ordinances on the county’s list is a building code. Septic systems and private wells fall under county Board of Health ordinances, while energy-code, electrical and trade-licensing rules come from the state.

Cerro Gordo County building department: who handles permitting

Zoning Administrator Tom Meyer and two assistant zoning administrators run Planning and Zoning, which also handles floodplain permits, rural 911 address markers, the county’s public docks and manure management plan reviews. CG Public Health issues septic permits, and the County Engineer controls road access and work in the right-of-way.

The Engineer’s Licensed Contractor Registration page says that anyone wishing to provide skills or services within the county right-of-way must be a licensed contractor, including surveying, driveways, tile work and brush removal (Ordinance No. 20B, Contractors License). This is a county Engineer right-of-way license, not a trade license.

Cities in Cerro Gordo County

The county zoning ordinance stops at city limits; inside each city the city decides what permits are needed.

Cerro Gordo County permit types

Applications can be filed in the county’s online permitting portal, emailed to plz@cerrogordo.gov, handed in at the courthouse or mailed there. The one-page zoning permit application asks for the owner, contractor, parcel number and township, the structure’s width, depth, area, height to the peak (including roof overhangs and projections over 2 feet) and its distance to each lot line and the nearest building.

Residential permits

A new rural house needs the zoning permit with a floor plan, a CG Public Health septic permit where there is no public sewer, a private well construction permit under the county well ordinance, a road access permit for a new driveway, a 911 address marker and a state electrical permit. In the A-1 district a new building lot must be at least 10 acres unless it existed before March 13, 1990; A-2 parcels, usually farmsteads split from cropland, need 2 acres, and a rezoning from A-1 to A-2 goes to the Planning and Zoning Commission, which advises the supervisors.

Building or remodeling a home here? Alliance handles home building permits, so the crew isn't waiting on the counter.

Commercial permits

Businesses use the same zoning permit and fee table. Many uses are special uses that the Board of Adjustment must approve after a public hearing, and signs need a sign permit priced by area. Ordinance No. 68 of May 15, 2023 stopped applications for utility-scale wind, solar and battery storage for 15 months while the comprehensive plan was redone; that plan was adopted on April 15, 2024, and Ordinance No. 69 on the county’s list amends the zoning ordinance to regulate industrial and utility-scale electricity generation and storage.

For tenant improvements and new commercial builds, Alliance handles commercial permit filing through issuance. More on this: commercial building permits explained.

What comes before the building permit

• Sewer. Inside the Clear Lake Sanitary District or the Environmental Resources Overlay District, the district’s permit comes first; elsewhere, private water or sewer needs CG Public Health approval before the zoning permit.
• Drainage districts. A site in a drainage district may need the Auditor’s Office to review the public drainage easement.
• Floodplain. The Iowa DNR reviews any building or digging in a FEMA floodplain through its joint application, and only then can the county issue its floodplain development permit.
• Zoning relief. Variances, special exceptions, special uses and appeals go to the Board of Adjustment, five citizens appointed for five-year terms whose decisions can be appealed only in court; rezonings go to the Planning and Zoning Commission and then the supervisors.

Cerro Gordo County permit costs and fees

The zoning permit fee depends on the projected cost of construction you write on the application. Planning and Zoning reviews the application first and asks for the fee only if it is approved; the permit must be paid for and issued before work starts.

Because the table uses flat bands, a $260,000 house pays $500 while a $240,000 house pays $250. A $12,000 pole shed on a non-farm lot falls in the $5,000 to $14,999 band and pays $50. The county pages do not post separate amounts for floodplain or septic permits. Neither the posted table nor the application shows an adoption date, so confirm the fee when the office quotes it.

Trade permits and who may pull them

The county pages describe no electrical, plumbing or mechanical permit program for rural land, so electrical permits and inspections outside city limits come from the state (DIAL), which the electrician uses before wiring. Plumbers and HVAC contractors work under their state licenses; the county pages describe no plumbing or mechanical inspection.

• Septic installers must be certified, and the septic installation permit and fee go to CG Public Health before any work starts on a new or altered system; staff evaluate the soil, set the design and inspect during installation.
• Well drillers work under the county’s well ordinance, No. 28C, adopted on June 28, 2022, which takes in the state rules on private well construction permits, nonpublic well construction and plugging of abandoned wells, and requires the well log after drilling.
• Right-of-way work for pay needs the County Engineer’s right-of-way contractor license (Ordinance No. 20B); an owner who builds a new access personally must show proof of insurance with $1 million umbrella coverage, as the road access application states.

The owner or someone authorized to sign for the owner files the zoning permit application under oath, and by signing gives Planning and Zoning staff permission to enter the property to review it.

How to apply for a Cerro Gordo County zoning permit

Review, corrections and what causes delay

The ordinance gives the Zoning Administrator seven days after accepting a complete application to issue the permit or a written denial with reasons. Delays usually come from missing approvals: no permit can issue until the sanitary district or Public Health has signed off, and floodplain work waits for the Iowa DNR. A denied permit can be taken to the Board of Adjustment as a variance or special exception; the variance application must be filed 6 weeks before the board’s next meeting and the hearing is advertised in the newspaper.

Inspections in Cerro Gordo County

Planning and Zoning checks setbacks and the use, but the county ordinances describe no framing, plumbing or final building inspection for a rural house. The inspections that do happen belong to other offices: CG Public Health inspects septic installations as they go in, the Engineer’s staff inspect a new driveway location, and the state electrical inspector checks wiring under the state permit.

In a floodplain, a new or substantially improved home must have its lowest floor, basement included, at least 1 foot above the base flood elevation; businesses may elevate or floodproof to the same level. Detached garages and sheds of up to 600 square feet that serve a home can be exempt from the elevation rule if they are used only for parking or storage, are anchored, have flood openings and keep utilities 1 foot above the base flood elevation. When a home is sold, a certified time-of-transfer inspector must inspect its septic system and send the report to CG Public Health for a pass or fail decision.

Iowa building code

Cerro Gordo County regulates rural building through Zoning Ordinance No. 15, its subdivision ordinance and its Board of Health ordinances on septic systems and wells; none of the ordinances it lists adopts a building code. FEMA’s Community Status Book lists Cerro Gordo County as participating in the National Flood Insurance Program, with flood maps effective December 15, 2022.

Iowa lets most cities and counties adopt the state building code, another code or none (a city of more than 15,000 must enforce at least the state code), but the energy, accessibility, fire, plumbing, mechanical and electrical rules apply statewide. Iowa rules

Cerro Gordo County permit search and official resources

The zoning ordinance requires the Zoning Administrator to keep every zoning permit application on file for public reference, so past permits for a parcel can be requested from Planning and Zoning; have the parcel number ready when you ask. Planning and Zoning Commission agendas are posted on the county site.

• Cerro Gordo County Planning and Zoning
• Building and zoning permits
• Online permit applications
• Zoning permit application
• Zoning permit fee table
• Planning and Zoning FAQ
• Zoning Ordinance No. 15
• County ordinances
• Floodplains
• Floodplain development permit application
• Board of Adjustment
• Planning and Zoning Commission
• Sign permit application
• CG Public Health septic inspections and permits
• Well ordinance No. 28C
• County Engineer permits
• Road access application
• Right-of-way contractor license
• Rural address markers
• Mason City permit portal
• State electrical permits (DIAL)
• FEMA Community Status Book, Iowa

Cerro Gordo County permit FAQs

Do I need a permit for a shed or fence in rural Cerro Gordo County?

Yes. The county requires a zoning permit for sheds, including sheds on skids, and for fences, decks and temporary structures. Residential fences may be up to 6 feet in side and rear yards.

How much is a zoning permit?

It depends on the projected construction cost: $25 under $5,000, $250 for $100,000 to $249,999, $500 for $250,000 to $499,999 and $1,000 over $750,000.

What happens if I build without a permit?

The application form adds a $200 administrative fee, or a fee equal to the permit fee if that is more, on top of the permit fee.

Are farm buildings exempt?

They can be, on A-1 land of 10 acres or more outside a floodplain and used for agriculture, but you still file an application so the county can decide, and there is no fee if it qualifies. Horse stables, hobby farms and second homes never qualify.

Who issues septic permits?

CG Public Health, 641-421-9300. A permit is needed to install or alter a system, the installer must be certified, and homes being sold need a time-of-transfer septic inspection.

Does Cerro Gordo County inspect electrical work?

No. The county pages describe no electrical program, so rural electrical permits and inspections come from the State of Iowa.

How long is a zoning permit good for?

Work must start within 120 days of issue, and the permit expires one year after it was issued.

Simplify Cerro Gordo County permitting with Alliance Permitting

Alliance Permitting is a permit documentation and submission company in Iowa. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

This guide is provided by Alliance Permitting for general information about Cerro Gordo County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.