Carroll County, Iowa Building Permit Guide

Outside its cities, Carroll County requires a building permit under its zoning ordinance before any structure is built, whether or not it is part of a farm. Region XII Council of Governments administers county zoning (712-792-9914); permits are mailed to its post office box or dropped at the Auditor’s Office in the courthouse. A non-farm project up to $25,000 pays $25, plus $2 for each further $5,000, so a $300,000 house pays $135; a building used for agriculture gets an exemption at no charge.

What requires a permit in unincorporated Carroll County?

The county’s rule covers any new construction or expansion of a building, on farms as well as acreages, and the application is reviewed against the conditions of the zoning district where the site lies. For a non-farm building the review asks whether the use fits the district (commercial uses stay out of residential districts and industry is kept apart), whether the lot size and front, side and rear setbacks are met (the office tells the owner the distances when the application comes in), and whether height and accessory-structure limits for sheds and garages apply. Splitting off a new lot may bring in the subdivision regulations.

A farm building still goes through the application: page 2 of the form is the agricultural exemption request, with a checklist of the farm activities the building serves, from raising crops and caring for livestock to handling or transporting products and treating livestock waste. The form prints the rule under the heading “FARMS EXEMPT”: “The provisions of the Zoning Ordinance shall not be construed to apply to land, farm houses, farm barns, farm outbuildings or other buildings, structures or erections which are primarily adapted, by reason of nature and area for use for agricultural purposes while so used. However, the ordinances may apply to any structure, building, dam, obstruction or excavation in or on the flood plains of any river or stream.” It adds that all farm buildings or structures are subject to the airport zoning ordinances and the Carroll County Flood Plain Ordinance.

What the county decides and what the state holds

The ordinances the county posts include no building code: they are the zoning ordinance, the subdivision ordinance, the flood plain ordinance and the airport zoning ordinance. The permit therefore settles where a building may go and what it may be used for; the decision rests on the county comprehensive plan and those ordinances. Construction standards for the trades, energy and wiring come from the state.

Carroll County building department: who handles permitting

Carroll County contracts the job: its Planning and Zoning page lists Region XII Council of Governments as the zoning contact, and calls, permit applications and payments all go to the council’s zoning administrator. Paper applications can be left at the Auditor’s Office in the courthouse or mailed with payment to the council.

Cities in Carroll County

Each city has its own ordinance and handles permits inside its limits. The county’s zoning map also highlights an area two miles around the cities of Carroll and Glidden, which the county page says is in the jurisdiction of those cities, so an owner near either city should ask which office reviews the site. The application form treats unincorporated communities such as Mt. Carmel, Maple River and Roselle as county sites.

Carroll County permit types

The county’s online forms page carries six documents: the Building Permit and Ag Exemption Application, a Rural Enterprise Application, a Tower Permit with the tower regulations, a Solar Power Permit and the Board of Adjustment application. Completed forms go back by mail or to the Auditor’s Office.

Residential permits

The building permit application asks for the applicant and contractor, the property address and legal description or parcel number, and whether the work is new construction, an addition, an alteration or a moved building. It records the structure’s primary use, its framing (wood, metal, fireproof or other), dimensions, estimated cost and the start and completion dates. Every application must include a map showing where the structure sits on the site. The form also asks five location questions: whether the site is in the airport airspace zone, in a flood plain, in an unincorporated community, within a quarter mile of a city limit, or in an agricultural preservation area of more than 300 acres approved under Iowa Code section 352.6.

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

Commercial permits

Businesses and industry need a district that allows the use; a rural enterprise or home occupation is approved through its own application for $200, and a conditional or special use permit costs $300 plus the building permit fee. Towers and solar arrays each have a dedicated permit. Appeals and variance requests go to the Board of Adjustment ($200), rezonings to the county for $300, and subdivisions are reviewed as minor ($250) or major ($350).

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

• Airport heights. A shaded area around the airport on the county map carries extra height limits for all construction, farm buildings included.
• Flood plain. The county flood plain ordinance applies to every building, farm or not, and the county calls its posted zoning and flood plain maps general information only, so have Region XII confirm whether a site is in the mapped area; the ordinances page also links the Iowa DNR flood plain permit form for work that needs state approval.
• Septic. The Environmental Health Office must issue the septic permit, after a percolation test, before a system is built or rebuilt.
• Well. A private well needs a permit, arranged by the state-certified driller before drilling starts.
• Address. A new rural address is generally needed before electrical service is installed and can be requested with the building permit or ag exemption.

Carroll County permit costs and fees

The county’s Zoning Related Fees page, marked effective October 24, 2016, sets the flat fees and links the valuation table, now titled the Carroll County Zoning Fee Schedule, July 1, 2026. That table starts at $25 for projects up to $25,000 and adds $2 for each further $5,000 of construction value.

Worked example: a $300,000 house on a rural acreage pays $135 for the building permit. With a new septic system ($300 permit and $300 percolation test) and a private well ($250), county permits total $985. The table lists values in $5,000 steps; for a cost that falls between two steps, ask Region XII which figure applies. At the same rate, a $1,075,000 building pays $445.

Septic fees are paid when the septic permit application is returned. Well fees apply to every private well, drinking-water, heat-pump, livestock and monitoring wells alike.

Trade permits and who may pull them

The county pages describe no electrical program, so DIAL issues the electrical permit and inspects the work. The county pages describe no county plumbing or mechanical permit, and the state licenses electricians, plumbers and mechanical contractors; contractors with $2,000 or more a year in construction earnings register with DIAL.

• Well drillers. Only a state-certified well driller may drill, and the driller arranges the county well permit before starting. A well drilled without a permit may bring a penalty, and a well that misses the standards may have to be filled in.
• Septic installers. Environmental Health must approve the system in advance and inspect it before installation is finished.
• Road work. Driveway access onto a county road and oversize loads fall to the County Engineer.

The county’s well page also points owners to a well assistance program run by Region XII Council of Governments.

How to apply for a Carroll County permit

Review, corrections and what causes delay

Applications without the required site map are incomplete. A project that needs a variance waits for the Board of Adjustment, and a use the district does not allow needs a conditional use permit or a rezoning first. The form’s questions on the airport zone, the flood plain and the quarter-mile distance to a city flag sites that other ordinances also cover, and a new lot split from a farm may need review under the subdivision regulations.

Inspections in Carroll County

Carroll County’s permit is a review of location and use, and the county pages describe no inspections of framing, plumbing or mechanical work. Wiring is inspected by the state under the electrical permit.

The one site inspection the county pages describe for a rural home is the septic system’s. Its size is set by state code from factors such as soil type and the number of bedrooms: the tank by bedroom count, and the drainfield length by the percolation test that every system needs.

Rural addresses use five-digit numbers that rise from north to south and from west to east, with odd numbers on the north and west sides of the road and even numbers on the south and east. The Emergency Management Agency director makes the blue address markers and arranges their installation.

Iowa building code

In unincorporated Carroll County, the zoning, subdivision, flood plain and airport zoning ordinances govern construction, and the county posts no building code among its ordinances. FEMA’s Community Status Book lists Carroll County as participating in the National Flood Insurance Program, with its first flood insurance rate map dated June 17, 1986 and current since September 15, 2017.

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

Carroll County permit search and official resources

Carroll County takes permits on paper and lists no online permit search. Questions about an earlier building permit or ag exemption go to Region XII at 712-792-9914; septic and well permit history is with the Environmental Health Office.

• Carroll County Planning and Zoning
• Planning and zoning online forms
• Building Permit and Ag Exemption Application
• Zoning related fees
• Zoning fee schedule, July 1, 2026
• Zoning, subdivision, flood plain and airport ordinances
• Septic permits
• Well permits
• 911 addressing
• County Engineer
• State electrical permits (DIAL)
• FEMA Community Status Book, Iowa

Carroll County permit FAQs

Do I need a permit for a farm building in Carroll County?

You file the same application and ask for the agricultural exemption, which costs nothing; the building still has to meet the airport zoning and flood plain ordinances.

What does a building permit cost for a new house?

$25 up to $25,000 of value plus $2 for each further $5,000, so $95 for a $200,000 house and $135 for a $300,000 one.

Who answers the phone for county zoning?

Region XII Council of Governments, which administers Carroll County zoning, at 712-792-9914, weekdays 8:00 am to 5:00 pm.

I live near Carroll or Glidden. Which office do I apply to?

The county map highlights two miles around each of those cities as their jurisdiction, so ask Region XII and the city before filing.

How much do septic and well permits cost?

Since April 1, 2024, a septic permit is $300 and the percolation test another $300; every private well permit is $250.

When do I need a rural address?

Generally before electrical service is installed; request it with the building permit or ag exemption, or call 712-792-9973.

Do solar panels need a county permit?

Yes. The county posts a separate Solar Power Permit form among its planning and zoning forms; return it to Region XII like the building permit.

Does the county inspect my house?

No. The permit checks zoning; the septic system is inspected by Environmental Health and the wiring by the state.

Simplify Carroll 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 Carroll County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.