Bolthole Index

Cerro Gordo County, Iowa

Building permits, zoning and septic rules in Cerro Gordo County, Iowa

49Index Score / 100
#81 of 99 in Iowa

Unincorporated Cerro Gordo County, Iowa requires a zoning permit for houses, sheds, fences, decks, utility buildings, temporary structures and changes of use1. County zoning applies throughout the rural unincorporated area, and CG Public Health handles private sewage-disposal systems23. RV or travel-trailer occupancy outside a park is limited to a temporary county permit4.

At a glance

Building permit
A zoning permit is required for listed construction and changes of use1
Zoning
Yes; Planning and Zoning regulates rural, unincorporated land uses2
Septic
A CG Public Health permit is required before installation or alteration56
RV living
Temporary occupancy outside a park requires a permit and is limited to 14 days7
Tiny home
Treated as a dwelling: 720 sq. ft. one-floor minimum and a main body at least 22 feet wide (lake lots excepted)8
Owner-builder
Own-property work is excluded from Iowa contractor registration; county zoning approval still applies910
Minimum home size
At least 720 sq. ft. on one floor, or a 650-sq.-ft. ground floor for a taller home11

Who to call

Planning & zoning

Cerro Gordo County Planning and Zoning

Land-use and zoning permits, zoning and building enforcement, subdivision review, floodplain development and special uses in rural unincorporated Cerro Gordo County

641-421-3075

plz@cerrogordo.gov

220 N. Washington Ave., Mason City, IA 50401

Online permits →

Septic permits

CG Public Health

Contact for private sewage disposal system site evaluations, design standards, inspections and consultations in Cerro Gordo County

(641) 421-9300

2570 4th St. SW, Suite 1, Mason City, IA 50401

Roads & driveways

Cerro Gordo County Engineer and Secondary Roads

Roads and bridges on the Cerro Gordo County Secondary Road System; the department publishes road-access and driveway-paving permit materials

641-424-9037

cgcengineer@cerrogordo.gov

17274 Lark Ave., Mason City, IA 50401

Contact details are copied from each office’s official page and were checked against it on October 12, 2026.

Off-grid gear

Going off-grid in Cerro Gordo County means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in Cerro Gordo County, Iowa?

Yes. Cerro Gordo County requires a zoning permit for houses, sheds, fences, decks, utility buildings, temporary structures and changes of use subject to county zoning administration1. Applications may be filed online, by email, in person or by mail; drawings must show the proposed location, size, property-line distances and nearby structures, and a new house or addition also needs a floor plan12. Published fees range from $25 to $1,000 according to construction cost13. Iowa excludes people performing work or having work performed on their own property from contractor registration; county zoning permits still apply910. An agricultural exemption requires a Planning and Zoning determination; qualifying work has no permit fee, while a second home, hobby farm, horse stable or floodplain project still requires review14. Iowa energy-conservation provisions apply to enclosed heated or cooled construction, subject to exceptions, and factory-built manufacture and installation provisions apply statewide15. We could not confirm county adoption of the full State Building Code, routine building inspections or certificates of occupancy; ask Planning and Zoning15.

Who handles building permits in Cerro Gordo County?

Cerro Gordo County Planning and Zoning is the first stop for construction on rural unincorporated land because the office handles land-use and zoning permits, zoning and building enforcement, subdivision review, floodplain development and special uses16. Reach Planning and Zoning at 641-421-3075 or plz@cerrogordo.gov, or visit 220 N. Washington Ave., Mason City, IA 5040116. County zoning covers unincorporated land17. Inside Clear Lake and Ventura, city offices handle building permits1819. CG Public Health remains the septic authority throughout Cerro Gordo County3. A new driveway connecting to a public right-of-way requires a permit from the County Engineer's Office, and widening an existing driveway may also require one20. Reach Engineer and Secondary Roads at 641-424-9037 or cgcengineer@cerrogordo.gov, 17274 Lark Ave., Mason City, IA 5040121. Iowa DOT district offices administer access permits for primary highways, and approval is required before work begins22.

Does Cerro Gordo County have zoning?

Cerro Gordo County zoning applies to unincorporated land23. Mason City, Clear Lake and Ventura administer their own zoning inside city limits; CG Public Health remains responsible for private septic systems countywide2425263. A county-regulated one-floor dwelling needs 720 square feet of usable ground-floor area; a story-and-one-half or two-story dwelling needs 650 square feet, excluding open porches, garages and steps27. Without public sewer and water, a lot needs at least 20,000 square feet and 100 feet of width; with public water but no sewer, the minimums are 10,000 square feet and 80 feet, unless the district requires more28. Setbacks vary: A-2 requires front and rear yards of 50 feet and side yards of 25 feet29. A-2 height is capped at 35 feet and two-and-one-half stories, subject to exceptions30. Ask Planning and Zoning for the parcel's mapped district and applicable lot-coverage limit before designing the site1731.

How do septic permits work in Cerro Gordo County?

CG Public Health handles private sewage-disposal systems in Cerro Gordo County through site evaluations, design standards, inspections and consultations3. A permit application and fee must be submitted before installing or altering a septic system, and a Certified Septic Installer must perform the work5. Where public sewer or water is unavailable, the private sewage and domestic-water plans need County Board of Health approval, and its certificate must accompany the building-permit application32. Contact CG Public Health at (641) 421-9300 or visit 2570 4th St. SW, Suite 1, Mason City, IA 5040133. Only about 6.6% of county soils are rated without severe limitations for a conventional drain field, so make septic feasibility an early purchase condition34. Iowa shares private-sewage oversight between county boards of health and the Iowa Department of Natural Resources, which retains authority over direct discharges to state waters35. A qualifying transfer of a home served by private septic requires an inspection before ownership changes36.

Can you live in an RV or tiny home in Cerro Gordo County?

Unincorporated Cerro Gordo County limits occupancy of an RV or travel trailer outside a travel-trailer park to a temporary permit37. The Zoning Administrator may issue that permit for no more than 14 days, with a $25 application fee37. Permanent storage is allowed only in side and rear yards and remains subject to accessory-structure setbacks; storage is not permission to occupy the vehicle37. A tiny home used as a dwelling in rural unincorporated Cerro Gordo County needs a zoning permit and falls under the dwelling-size rules: at least 720 square feet of usable ground-floor area for one floor, or at least 650 square feet for a story-and-one-half or two-story home8. The main body of the dwelling must also be at least 22 feet wide, except on lake lots in a residential district8. Ask Planning and Zoning how the mapped district and sanitation approval apply to the proposed tiny-home design1738.

How do you build a home in Cerro Gordo County?

  1. Ask Planning and Zoning to confirm county jurisdiction, the mapped zoning district and whether the proposed use is allowed217.
  2. Confirm lot area, width, setbacks, lot coverage and height before choosing the building site because those controls vary by district28293139.
  3. Submit the septic application and fee to CG Public Health before work, and obtain Board of Health approval where public sewer or water is unavailable528.
  4. Complete Iowa DNR review before seeking the county Floodplain Development Permit for structures, reconstruction or dirt work in the FEMA-designated 100-year floodplain40.
  5. Obtain a County Engineer driveway permit for a new connection to a public right-of-way, and ask whether widening also requires one20.
  6. Submit the zoning application and drawings online, by email, in person or by mail12.
  7. Pay the construction-cost-based fee and wait for permit issuance before starting work1341.
  8. Ask Planning and Zoning whether building inspections or a certificate of occupancy applies because we could not confirm either countywide requirement16.

What should you check before buying land in Cerro Gordo County?

Verify the parcel's jurisdiction and mapped zoning district before relying on a listing's description of buildability217. Every planned subdivision in unincorporated Cerro Gordo County must follow the county ordinance; within 2 miles of a municipality that also regulates subdivisions, both sets of rules apply and the stricter standard controls42. Make septic feasibility a purchase condition because only about 6.6% of county soils are rated without severe limitations for a conventional drain field34. Check FEMA floodplain status and confirm that an existing or proposed driveway has the required access approval before choosing a building envelope4020. Countywide farmland value is about $9,033 per acre, while the effective property-tax rate is about 1.5% and the median property-tax bill is about $2,305 per year; a parcel's price and tax treatment can differ434445. For a home on private septic, ask for the required qualifying time-of-transfer inspection record36.

Watch-outs

  • Iowa energy-conservation and factory-built provisions apply statewide, but we could not confirm Cerro Gordo County adoption of the full State Building Code; ask Planning and Zoning about review, inspections and occupancy approval15.
  • An RV or travel trailer outside a park has a temporary-use permit capped at 14 days, not a confirmed route to full-time RV living4.
  • Only about 6.6% of Cerro Gordo County soils are rated without severe limitations for a conventional septic drain field, so settle septic feasibility before committing to a house location34.
  • A claimed agricultural exemption needs a Planning and Zoning determination, and second homes, hobby farms, horse stables and floodplain work are among the listed exceptions14.

Sources

  1. Building/Zoning Permits - Cerro Gordo County, Iowa, quoted and re-checked
  2. Planning and Zoning - Cerro Gordo County Government - Iowa, quoted and re-checked
  3. Septic Inspection/Testing | CG Public Health, quoted and re-checked
  4. Cerro Gordo County Ordinance No. 15 Zoning Ordinance, quoted and re-checked
  5. Septic Inspection/Testing | CG Public Health, quoted and re-checked
  6. Cerro Gordo County Ordinance No. 15 Zoning Ordinance, quoted and re-checked
  7. Cerro Gordo County Ordinance No. 15 Zoning Ordinance, quoted and re-checked
  8. Cerro Gordo County Ordinance No. 15, Zoning Ordinance, quoted and re-checked
  9. Iowa Code § 91C.1, quoted and re-checked
  10. Cerro Gordo County Ordinance No. 15 Zoning Ordinance, quoted and re-checked
  11. Cerro Gordo County Ordinance No. 15 Zoning Ordinance, quoted and re-checked
  12. Building/Zoning Permits - Cerro Gordo County, Iowa, quoted and re-checked
  13. Construction Costs Fee, quoted and re-checked
  14. Frequently Asked Questions - Planning & Zoning, quoted and re-checked
  15. Iowa Code Chapter 103A, State Building Code, quoted and re-checked
  16. Cerro Gordo County Planning and Zoning (cerrogordo.gov)
  17. Cerro Gordo County Zoning Ordinance No. 15, quoted and re-checked
  18. Clear Lake: Clear Lake Code of Ordinances, § 165.47 Building and Zoning Permits and Occupancy Certificates (Cerro Gordo County), quoted and re-checked
  19. Ventura: 172.01 Compliance (Cerro Gordo County), quoted and re-checked
  20. Frequently Asked Questions - Planning and Zoning, quoted and re-checked
  21. Cerro Gordo County Engineer and Secondary Roads (cerrogordo.gov)
  22. Access Management (Iowa statewide rule), quoted and re-checked
  23. Planning and Zoning, quoted and re-checked
  24. Mason City: 12-1-1: Title (Cerro Gordo County), quoted and re-checked
  25. Clear Lake: Clear Lake Code of Ordinances, § 165.47 Building and Zoning Permits and Occupancy Certificates (Cerro Gordo County), quoted and re-checked
  26. Ventura: Chapter 165 Zoning - Title and Definitions (Cerro Gordo County), quoted and re-checked
  27. Cerro Gordo County Ordinance No. 15 Zoning Ordinance, quoted and re-checked
  28. cerrogordo.gov, quoted and re-checked
  29. Cerro Gordo County Ordinance No. 15 Zoning Ordinance, quoted and re-checked
  30. Cerro Gordo County Ordinance No. 15 Zoning Ordinance, quoted and re-checked
  31. Cerro Gordo County Ordinance No. 15 Zoning Ordinance, quoted and re-checked
  32. Cerro Gordo County Ordinance No. 15 Zoning Ordinance, quoted and re-checked
  33. CG Public Health (cerrogordo.gov)
  34. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  35. Iowa Code §455B.172, Jurisdiction of department and local boards (Iowa statewide rule), quoted and re-checked
  36. Iowa Code §455B.172, Jurisdiction of department and local boards (Iowa statewide rule), quoted and re-checked
  37. Cerro Gordo County Ordinance No. 15 Zoning Ordinance, quoted and re-checked
  38. Cerro Gordo County Ordinance No. 15 Zoning Ordinance, quoted and re-checked
  39. Cerro Gordo County Ordinance No. 15 Zoning Ordinance, quoted and re-checked
  40. Floodplains - Planning and Zoning - Cerro Gordo County, Iowa, quoted and re-checked
  41. Building/Zoning Permits, quoted and re-checked
  42. Subdivision Ordinance (Planning & Zoning), quoted and re-checked
  43. Farmland value per acre (USDA census): Bolthole Index county data
  44. Effective property tax rate: Bolthole Index county data
  45. Median property tax bill: Bolthole Index county data

Written October 12, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

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Compared with neighboring counties

Like all 6 of its neighbors, Cerro Gordo County has countywide zoning.

RuleCerro Gordo CountyWorth CountyFranklin CountyFloyd CountyHancock CountyButler CountyWright County
Building permitRequiredRequiredRequiredRequiredLimitedRequiredRequired
County zoningYesYesYesYesYesYesYes
Septic permitsCounty Dept. of Public HealthCounty SanitarianCounty Env. Health Dept.County Env. HealthCounty Env. Health OfficeCounty Env. HealthCounty Public Health

County locator

Cerro Gordo County in Iowa

49
County map
Cerro Gordo County highlighted among the Iowa counties · colored by Index score

How Cerro Gordo County scores

Seclusion44100% ev.
Self-Sufficiency29100% ev.
Admin Boringness50100% ev.
Durability58100% ev.
Property Autonomy51100% ev.
Carry Cost60100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$206kTypical home
1.5%Property tax
$9,033Land / acre
35.8"Annual rain
13.3% of yrsSevere drought
3 / yr (+2.9)Mid-century 100°F days
16.5 daysMid-century dry spell
1.88" (+10.8%)Mid-century 1-day rain
1.76×Wildfire change factor
100%Forward climate coverage
$1,654Home insurance / yr
3.3% / yrInsurance growth
1.07%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
48,793People within 30 min
2,863,542People within 2 hr
42,825Radius comparison (15 mi)
74.6People / sq mi
1.4%Federal land
99.2%Land at 15% slope or less
6.6%Soils rated "not limited" for septic (strict USDA rating)
23,596 acWorkable land screen
3.4%Wooded land
66.3 tonsBiomass / forest ac
45.9°FAvg temp

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Cities and towns in Cerro Gordo County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Not yet researched: Dougherty · Meservey · Plymouth · Rock Falls · Rockwell · Swaledale · Thornton

Answers from the rulebook for Cerro Gordo County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Cerro Gordo County rules

  • Building permitRequired

    Construction of structures subject to Cerro Gordo County zoning administration.

    • The page lists houses, sheds, fences, decks, utility buildings, temporary structures, and changes of use.
    • Applications require drawings showing location, dimensions or size, certain distances to structures, and distances to property lines.
    • New houses or additions require a floor plan.
    • Applications may be submitted online, by email, in person, or by mail.
    “A zoning permit is required to build all types of structures such as:”
    One more reviewed finding on this topic
    • Required — Building, moving, enlarging, altering, reconstructing, or changing the use or occupancy of structures in county-regulated areas.
      “A zoning permit is required to build all types of structures such as:”
  • Owner-builder exemptionConditional

    A property owner personally constructing a drive into the owner's property under Cerro Gordo County Ordinance No. 20B; this is a waiver of the excavator-license bond requirement, not a general exemption from zoning or building permits.

    • The waiver applies only where the property owner is constructing a drive into the owner's property.
    • The owner must personally perform all the work.
    • The ordinance separately requires a permit before work within a county street, alley, or other county right-of-way begins.
    • The ordinance states that the ordinance is effective upon final passage, approval, and publication as required by law; it does not state an actual publication date in the cited passage.

    excavator license fee: 25 USD (The fee is waived for public utilities franchised within Cerro Gordo County.) · bond amount: 5000 USD (The bond requirement is waived for a property owner who will only be constructing a drive into the owner's property and personally performs all work.)

    “waived for a property owner who will only be constructing a drive into their property. The owner must personally preform all the work.”
  • County-wide zoningPresent

    County zoning authority in rural, unincorporated areas of Cerro Gordo County.

    • The county planning and zoning department states that it regulates land uses in rural, unincorporated areas.
    “Regulate land uses in the rural (unincorporated) areas of Cerro Gordo County”
    2 more reviewed findings on this topic
    • Present (with conditions) — County zoning in rural, unincorporated Cerro Gordo County.
      “Regulate land uses in the rural (unincorporated) areas of Cerro Gordo County”
    • Present (with conditions) — Zoning regulation in the unincorporated territory of Cerro Gordo County.
      “Regulate land uses in the rural (unincorporated) areas of Cerro Gordo County”
  • Local zoningPresent (with conditions)

    County-administered zoning in Cerro Gordo County, especially county-regulated unincorporated areas.

    • This claim does not state that the county administers municipal zoning ordinances.
    • Municipal and other local regulations may apply separately within incorporated areas.
    “For the purpose of this Ordinance, the unincorporated territory of Cerro Gordo County, Iowa, is hereby divided into the following districts:”
  • Zoning districtsPublished

    Zoning districts and the official zoning map for the unincorporated territory of Cerro Gordo County.

    • The ordinance divides only the unincorporated territory of Cerro Gordo County; incorporated municipalities may have separate zoning rules.
    • The official zoning map establishes district boundaries and is filed with the County Zoning Administrator.
    • District-specific use, dimensional, and development rules are in the county Zoning Ordinance.
    “For the purpose of this Ordinance, the unincorporated territory of Cerro Gordo County, Iowa, is hereby divided into the following districts:”
    One more reviewed finding on this topic
  • Minimum dwelling sizeSpecified

    Dwellings subject to Article 6.20 of the county zoning ordinance.

    • A one-floor dwelling excludes open porches, garages, and steps from usable ground-floor-area measurement.
    • A story-and-one-half or two-story dwelling excludes open porches, garages, and steps.
    • District-specific rules may impose additional requirements.

    minimum usable ground-floor area for one-floor dwelling: >= 720 square feet (exclusive of open porches, garages or steps) · minimum ground-floor area for story-and-one-half or two-story dwelling: >= 650 square feet (exclusive of open porches, garages or steps)

    “A one (1) floor dwelling shall contain not less than seven hundred twenty (720) square feet of usable ground floor area”
    One more reviewed finding on this topic
    • Specified — Dwellings regulated by the county zoning ordinance.
      “A one (1) floor dwelling shall contain not less than seven hundred twenty (720) square feet of usable ground floor area exclusive of open porches, garages or steps.”
  • Minimum lot sizeSpecified

    Lots subject to county zoning requirements, including lots lacking public sewer and/or water.

    • The stated minimums apply where public sewer and/or water is unavailable.
    • A district minimum for a single-family dwelling controls if greater.
    • Residential district rules may impose separate minimum lot areas.

    minimum lot area without public sewer and water: >= 20000 square feet (unless district minimum is greater) · minimum lot width without public sewer and water: >= 100 feet (unless district minimum is greater) · minimum lot area with public water and no public sewer: >= 10000 square feet (unless district minimum is greater) · minimum lot width with public water and no public sewer: >= 80 feet (unless district minimum is greater)

    “No public sewer and water: Minimum area - 20,000 square feet”
    2 more reviewed findings on this topic
    • Specified — Lot-area standards in county zoning districts, including residential districts.
      “Two-family dwellings, with a minimum lot area of five thousand (5,000) square feet per family.”
    • District specific (with conditions) — Lot-area requirements vary by zoning district in the unincorporated county.
      “The R-3 Single Family Residential District is one of single family dwelling units designed to maintain, protect and preserve the character of development on lots with a minimum area of five thousand (5,000) square feet and lot width of not less than fifty (50) feet.”
  • SetbacksSpecified

    Lots in county agricultural and residential zoning districts.

    • The quoted district example is A-2 Agricultural District.
    • Other district tables in Articles 7-18 establish additional or different yard requirements.
    • Corner-lot and lake-lot exceptions may apply.

    A-2 front yard depth: >= 50 feet · A-2 side yard width: >= 25 feet · A-2 rear yard depth: >= 50 feet

    “A. Front yard depth, fifty (50) feet. B. Each side yard width, twenty-five (25) feet. C. Rear yard depth, fifty (50) feet.”
    One more reviewed finding on this topic
  • Lot coverageSpecified

    Maximum lot-coverage standards in county zoning districts.

    • The ordinance identifies maximum lot coverage by buildings as a district regulation; the exact numeric table was not resolved for each district in this pass.
    “maximum lot coverage by all building; maximum height of structures; minimum off-street parking and loading requirements; and sign regulations shall be the same as those required under the C-2 General Commercial District classification”
  • Building heightSpecified

    Buildings in county zoning districts.

    • The quoted example is the A-2 Agricultural District.
    • Article 6 provides exceptions for specified structures and public, semi-public, hospital, school, church, and temple buildings.
    • Other district tables may set different limits.

    A-2 maximum building height: <= 35 feet (two and one-half stories maximum; special district and Article 6 exceptions may apply)

    “No building hereafter erected or structurally altered shall exceed two and one-half (2-1/2) stories or thirty-five (35) feet.”
    2 more reviewed findings on this topic
    • Specified — Building-height limits in county zoning districts.
      “No building hereafter erected or structurally altered shall exceed two and one-half (2-1/2) stories or thirty-five (35) feet.”
    • District specific (with conditions) — Building height in county zoning districts.
      “No building hereafter erected or structurally altered shall exceed two and one-half (2-1/2) stories or thirty-five (35) feet.”
  • Living in an RVTemporary only (with conditions)

    Occupancy of a recreation vehicle or travel trailer outside a travel-trailer park.

    • The Zoning Administrator may issue a temporary-use permit.
    • The permit may not exceed fourteen days from the date granted.
    • The application must identify the property, occupant, vehicle operator, driver's-license number, and vehicle license number.
    • The application fee is $25.
    • Separate provisions allow permanent storage in side and rear yards only, subject to accessory-structure setbacks.

    maximum temporary occupancy period: <= 14 days · temporary occupancy application fee: 25 USD

    “The permit may be issued for a period not to exceed fourteen (14) days from date of granting the permit.”
    2 more reviewed findings on this topic
    • Temporary only (with conditions) — Occupancy of a recreation vehicle or travel trailer outside a travel trailer park.
      “The Zoning Administrator may issue a permit for the temporary occupancy of a recreation vehicle or travel trailer outside a travel trailer park. The permit may be issued for a period not to exceed fourteen (14) days from date of granting the permit.”
    • Limited — Temporary occupancy of a recreation vehicle or travel trailer outside a travel trailer park.
      “The permit may be issued for a period not to exceed fourteen (14) days from date of granting the permit.”
  • Tiny homesLimited

    A tiny home used as a dwelling in Cerro Gordo County's rural unincorporated area, if treated as a dwelling unit under the county zoning ordinance.

    • A zoning permit is required to build all types of structures, including a house and temporary structures.
    • A one-floor dwelling must contain at least 720 square feet of usable ground-floor area, excluding open porches, garages, and steps.
    • A story-and-one-half or two-story dwelling must contain at least 650 square feet of ground-floor area, excluding open porches, garages, and steps.
    • The county Planning and Zoning Department states that it regulates land uses in the rural (unincorporated) areas of Cerro Gordo County.
    • The ordinance states that the minimum-width requirement does not apply to lake lots in a residential district.

    minimum width of main body of dwelling unit: >= 22 feet (The ordinance states that this minimum-width requirement does not apply to lake lots in a residential district.) · minimum usable ground-floor area for one-floor dwelling: >= 720 square feet (Open porches, garages, and steps are excluded.) · minimum ground-floor area for story-and-one-half or two-story dwelling: >= 650 square feet (Open porches, garages, and steps are excluded.)

    “A one (1) floor dwelling shall contain not less than seven hundred twenty (720) square feet of usable ground floor area”
  • Who permits septicCounty (with conditions)

    Private sewage-disposal systems within Cerro Gordo County.

    • CG Public Health conducts site evaluations, sets design standards, and conducts inspections and consultations.
    • The source identifies the program as operating within Cerro Gordo County.
    “CG Public Health conducts site evaluations, sets design standards, and conducts additional inspections and consultations for private sewage disposal systems (septic systems) within Cerro Gordo County.”
    One more reviewed finding on this topic
    • County (with conditions) — County-regulated private sanitary disposal and water systems.
      “Where public sanitary sewer or water is not available, the application shall include the approval of the County Board of Health as to plans and specifications of the proposed private sanitary disposal or water system.”
  • Septic permitRequired

    Installation or alteration of septic systems in Cerro Gordo County.

    • The private sewage disposal system permit application and fee must be submitted to CG Public Health before any work starts.
    • All septic systems installed in the county must be installed by a Certified Septic Installer.
    “A septic installation permit is required to install or alter a septic system.”
  • Off-grid sanitationLimited

    Buildings using sewage facilities without available public sewer and/or water.

    • Private sewage disposal and domestic water arrangements must comply with County Board of Health requirements.
    • A Board of Health certificate of approval must accompany the building-permit application.
    • The ordinance supplies minimum lot area and frontage requirements for no-public-utility and public-water/no-public-sewer situations.
    “the application for a building permit shall be accompanied by a certificate of approval from said Board of Health.”
    One more reviewed finding on this topic
    • Limited — Private sanitary disposal or water systems where public sanitary sewer or water is unavailable.
      “Where public sanitary sewer or water is not available, the application shall include the approval of the County Board of Health as to plans and specifications of the proposed private sanitary disposal or water system.”
  • Mandatory utility hookupConditional

    Proposed buildings or uses involving sewage facilities where public sewer and/or water is unavailable.

    • Sewage disposal and domestic water supply must comply with County Board of Health requirements.
    • A building-permit application must include a certificate of approval from the County Board of Health.
    • Where no public sewer and water exists, minimum area is 20,000 square feet and minimum lot width is 100 feet.
    • Where public water exists but no public sewer exists, minimum area is 10,000 square feet and minimum lot width is 80 feet.
    • These minimums do not apply where the district's minimum for a single-family dwelling is greater.

    minimum lot area without public sewer and water: 20000 square feet (unless the district minimum for a single-family dwelling is greater) · minimum lot width without public sewer and water: 100 feet (unless the district minimum for a single-family dwelling is greater) · minimum lot area with public water and without public sewer: 10000 square feet (unless the district minimum for a single-family dwelling is greater) · minimum lot width with public water and without public sewer: 80 feet (unless the district minimum for a single-family dwelling is greater)

    “public sewer and/or water is not available, the sewage disposal and/or the domestic water supply shall comply with the requirements of the County Board of Health”
    One more reviewed finding on this topic
    • Conditional — Utility service for county zoning applications.
      “Where public sanitary sewer or water is not available, the application shall include the approval of the County Board of Health as to plans and specifications of the proposed private sanitary disposal or water system.”
  • Agricultural exemptionConditional

    Agricultural construction seeking a county zoning-permit exemption.

    • The applicant must submit an application to Planning and Zoning for a determination.
    • The FAQ lists a second home, floodplain construction, a horse stable, hobby farms, and uses not allowed in A-1 or on property not zoned A-1 as examples requiring review.
    • No permit fee is required if the structure qualifies.
    “You need to turn in an application to the Planning and Zoning office to determine whether a structure qualifies for agricultural exemption. No permit fee is required if the structure qualifies.”
    One more reviewed finding on this topic
    • Conditional — Agricultural-exemption determinations for structures in county-regulated areas.
      “You need to turn in an application to the Planning and Zoning office to determine whether a structure qualifies for agricultural exemption. No permit fee is required if the structure qualifies.”
  • Subdividing landRegulated (with conditions)

    Subdivisions planned within the unincorporated areas of Cerro Gordo County.

    • All subdivisions planned within the unincorporated county must comply with the county Land Subdivision Ordinance.
    • Subdivisions within two miles of a city or town that also enforces subdivision regulations are subject to both sets of regulations and must comply with the more restrictive regulations.
    • A preliminary plat may be approved, approved subject to conditions, or disapproved by the Board of Supervisors; conditional preliminary-plat approval is valid for one year.
    • Final plats require submission to the Zoning Administrator at least fourteen days before a regular Zoning Commission meeting and a $200 fee.
    • Necessary improvements include streets and roads, individual lot sewage treatment facilities, and community sewage treatment and/or water systems.

    municipal review buffer: 2 miles (Where the municipality also enforces subdivision regulations.) · preliminary plat approval validity: 1 year (Unless extended by the Board of Supervisors.) · final plat submission lead time: >= 14 days · final plat fee: 200 USD

    “all subdivisions hereinafter planned within the unincorporated areas of the County shall in all respects be in full compliance with the regulations hereinafter set forth.”
    2 more reviewed findings on this topic
    • Regulated (with conditions) — Subdivisions planned within unincorporated Cerro Gordo County.
      “all subdivisions hereinafter planned within the unincorporated areas of the County shall in all respects be in full compliance with the regulations hereinafter set forth.”
    • Regulated (with conditions) — Subdivisions planned within unincorporated Cerro Gordo County.
      “all subdivisions hereinafter planned within the unincorporated areas of the County shall in all respects be in full compliance with the regulations hereinafter set forth.”
  • Driveway accessRequired

    New driveways connecting to a public right-of-way and potentially widened driveways.

    • A Driveway Permit is required from the County Engineer’s Office for a new driveway connecting to the public right-of-way.
    • A permit may also be required for widening a driveway.
    • A ground-level sidewalk or driveway does not need a zoning permit.
    “However, for a new driveway, you will need a Driveway Permit from the County Engineer’s Office to connect to the public right-of way. You also may need a Driveway Permit for widening a driveway.”
  • Building in a floodplainRequired

    Work in the FEMA-designated 100-year floodplain.

    • Review is required for new or expanded structures, reconstruction, and dirt work including boring, grading, or excavation.
    • The floodplain is determined by FEMA.
    • State review by Iowa DNR must be completed before local review.
    • A local Floodplain Development Permit is required.
    • Local rules are established in Chapter 21 of the County Zoning Ordinance.
    “Any work done in the 100-year floodplain requires review including: New or expanded structures Reconstruction Any dirt work, such as boring, grading, or excavation”
    One more reviewed finding on this topic
    • Required — Work in the FEMA-designated 100-year floodplain.
      “Any work done in the 100-year floodplain requires review including: New or expanded structures Reconstruction Any dirt work, such as boring, grading, or excavation”
  • Permit feesPublished (with conditions)

    County construction/zoning permit fees based on construction cost.

    • The published schedule uses construction-cost brackets.
    • The schedule ranges from $25 for $0-$4,999 to $1,000 for costs over $750,000.

    fee for construction cost $0-$4,999: 25 USD · fee for construction cost $5,000-$14,999: 50 USD · fee for construction cost $15,000-$29,999: 75 USD · fee for construction cost $30,000-$49,999: 100 USD · fee for construction cost over $750,000: 1000 USD

    “Construction Costs Fee $0 to $4,999 $ 25.00”
    One more reviewed finding on this topic
    • Published (with conditions) — County zoning permit fees.
      “The following fees shall be charged for zoning permits and are based on the proposed cost of the erection, construction or structural alteration of the building:”
  • Permit processPublished (with conditions)

    County zoning-permit application process.

    • The application page directs applicants to provide an application and drawings.
    • Drawings must show proposed location, dimensions or size, nearby structures when less than 20 feet away, and distances to property lines including street right-of-way.
    • New houses or additions require a floor plan.
    • Applications may be submitted online, by email, in person, or by mail.
    “What do I need to apply? Application Drawing showing: Location of the proposed structure Dimensions or size of structure”
    One more reviewed finding on this topic
    • Published (with conditions) — County zoning-permit application process.
      “Online: complete and submit application online”

Iowa rules that apply here

  • Building code adoptedPartial

    The Iowa State Building Code, including the 2024 International Building Code adopted by reference with Iowa amendments, applies statewide to state-owned buildings and structures, qualifying state-funded construction, certain cities over 15,000 that lack a substantially equivalent local building code, and governmental subdivisions that accept the code by ordinance. Factory-built-structure provisions apply throughout Iowa.

    • In a governmental subdivision, the code generally applies only after the governing body enacts an ordinance accepting applicability and files a certified copy with the commissioner.
    • The local ordinance fixes the effective date, which must be no more than six months after adoption.
    • A governmental subdivision may withdraw after one year by ordinance, following the required public hearing and written notice; the withdrawal date must be at least 180 days after ordinance adoption, and previously issued permits are unaffected.
    • The state building code applies to state-owned buildings and structures and to newly constructed buildings and structures paid for in whole or in part with state-appropriated money but not wholly state-owned.
    • Cities with populations over 15,000 that lack a local building code substantially in accord with nationally recognized standards must enforce the state building code.
    • Factory-built-structure provisions apply throughout the state; an approved factory-built structure is deemed compliant with building regulations applicable to its manufacture and installation and is exempt from other state or local building regulations, subject to the statutory exceptions concerning professional engineering and architecture and manufactured homes.
    • The current administrative rule adopts the 2024 International Building Code by reference with amendments; detached one- and two-family dwellings, certain townhouses not more than three stories, and their accessory structures instead comply with the amended International Residential Code.

    adopted model building code: 2024 International Building Code (Adopted by reference with Iowa amendments.) · current administrative-rule effective date: 2025-09-10 (Iowa Administrative Code Chapter 481.301 source identifies ARC 9474C as effective September 10, 2025.) · local ordinance effective-date limit: <= 6 months after adoption · local withdrawal waiting period: >= 1 year after code became applicable (A governmental subdivision may withdraw only after this period has elapsed.) · withdrawal effective-date minimum: >= 180 days after ordinance adoption (Previously issued permits remain unaffected.)

    “The state building code shall be applicable: [...] In each governmental subdivision where the governing body has enacted an ordinance accepting the application of the code.”
    2 more reviewed findings on this topic
    • Partial — Iowa State Building Code provisions applicable in Iowa, including any portion applicable within Cerro Gordo County.
      “The state building code shall be applicable: [...] In each governmental subdivision where the governing body has enacted an ordinance accepting the application of the code.”
    • Partial — Iowa building-code requirements that may apply to construction in Cerro Gordo County.
      “the governing body has enacted an ordinance accepting the applicability of the code and has filed a certified copy of the ordinance”
  • InspectionsLimited

    Buildings and structures subject to Iowa Code section 103A.10A, including newly constructed state-owned buildings, state-board-of-regents buildings, and certain state-funded buildings.

    • Newly constructed state-owned buildings and structures subject to the state building code are subject to plan review and inspection, excluding renovations and repairs except as provided by statute.
    • Newly constructed buildings owned by the state board of regents are subject to plan review and inspection, excluding renovations and repairs except as provided by statute.
    • State-funded buildings not wholly owned by the state are subject to state plan review and inspection when the governmental subdivision has not adopted the listed codes or does not perform inspections; otherwise they must comply with the local codes and inspections.
    • For ordinary privately owned construction, inspection administration is governed by the applicable local law or ordinance.
    “All newly constructed buildings or structures subject to the state building code, including any addition, but excluding any renovation or repair of such a building or structure, owned by the state or an agency of the state, except as provided in subsection 2, shall be subject to a plan review and inspection by the commissioner or an independent building inspector appointed by the commissioner.”
  • Certificate of occupancyLimited

    Certificates of occupancy or use for buildings subject to Iowa's State Building Code and certificates approving specified buildings, facilities, or installations for licensure.

    • A local building department issues certificates of occupancy or use when required by ordinance.
    • When issued for a building constructed under the state building code, the certificate must certify conformity with the code and is in the form prescribed by the governing body of the governmental subdivision.
    • For facilities governed by Iowa Administrative Code chapter 481.280, if a certificate of occupancy is required for use, it will not be issued until the inspection fee is paid.
    • Chapter 481.280.5 applies to a certificate approving a building, facility, or installation for occupancy upon request from an owner or owner's agency when applicable rules are satisfied and all fees are paid.
    • The state sources do not require a certificate of occupancy for every building statewide.

    additional reinspection fee: 125 USD (Applies for each additional reinspection after the initial reinspection when original deficiencies remain uncorrected.)

    “Issue certificates of occupancy or use, permits, licenses, and other documents in connection with the construction of buildings or structures as may be required by ordinance. (1) A certificate of occupancy or use for a building or structure constructed in accordance with the provisions of the state building code shall certify that the building or structure conforms to the requirements of the code. The certificate shall be in the form the governing body of the governmental subdivision prescribes.”
  • Manufactured homesAllowed (with conditions)

    Placement and residential occupancy of manufactured homes under county zoning statewide in Iowa

    • A county may not disallow the proposed residential structure solely because it is a manufactured home.
    • The home must be located and installed under the same standards applicable to a site-built single-family dwelling on the same lot, including permanent foundation, setback, and minimum square footage standards.
    • The home must be assessed and taxed as a site-built dwelling.
    • A county may not require an incompatible perimeter foundation system and may not require more than one permanent foundation system.
    • Outside a manufactured home community or mobile home park, requirements may ensure visual compatibility of the permanent foundation system with surrounding residential structures.
    • Recorded restrictive covenants are not abrogated.
    • Counties may regulate transportation, water, sewerage, and other land development; the statute also bars width standards greater than twenty-four feet and certain design standards when federal standards are met.

    maximum mandated width standard: <= 24 feet (if the housing otherwise complies with 42 U.S.C. §5403)

    “A county shall not adopt or enforce zoning regulations or other ordinances which disallow the plans and specifications of a proposed residential structure solely because the proposed structure is a manufactured home. However, a zoning ordinance or regulation shall require that a manufactured home be located and installed according to the same standards, including but not limited to a permanent foundation system, set-back, and minimum square footage, which would apply to a site-built, single family dwelling on the same lot, and shall require that the home is assessed and taxed as a site-built dwelling.”
  • Accessory dwellingsAllowed (with conditions)

    City regulation of accessory dwelling units statewide in Iowa, within a zoning district where a single-family residence is an allowed principal use

    • At least one accessory dwelling unit must be allowed on the same lot as a single-family residence.
    • The accessory dwelling unit must comply with applicable building regulations under chapter 103A.
    • The unit may not exceed 1,000 square feet or 50 percent of the size of the single-family residence, whichever is larger; unfinished basements are excluded from the size calculation.
    • Historic-building-code restrictions, deed restrictions, and common-interest-community rules may limit or prohibit construction or use.
    • A manufactured or mobile home used as the accessory dwelling unit must be converted to real property by placement on a permanent foundation and assessed for real-estate taxes under section 435.26.
    • A historic-preservation area may regulate the unit to the extent the city or commission determines it incongruous and records its reasons.
    • Effective July 1, 2026.

    maximum accessory dwelling unit size: 1,000 square feet or 50% of the single-family residence, whichever is larger (unfinished basements excluded from the size calculation)

    “A city shall allow a minimum of one accessory dwelling unit on the same lot as a single family residence within a zoning district where a single family residence is an allowed principal use, in accordance with the following conditions:”
    One more reviewed finding on this topic
    • Allowed (with conditions) — County regulation of accessory dwelling units statewide in Iowa, within a zoning district where a single-family residence is an allowed principal use
      “A county shall allow a minimum of one accessory dwelling unit on the same lot as a single family residence within a zoning district where a single family residence is an allowed principal use, in accordance with the following conditions:”
  • Septic inspectionRequired

    Private sewage disposal systems serving buildings with one through four dwelling units, before qualifying ownership transfers statewide.

    • Inspection is required before transfer of ownership, including seller-financed real estate contracts.
    • The county recorder may not record the deed or conveyance document without a certified inspector report, unless weather or temporary physical conditions prevent inspection and the buyer executes a binding acknowledgment.
    • The requirement applies to sale, exchange, real estate contract, or other purchase of real estate and improvements.
    • Exceptions include specified court-ordered, foreclosure-related, fiduciary, family, demolition, recently installed system, partition, tax-sale, low-consideration, and qualifying family-entity transfers.
    • The septic tank must be opened and pumped at inspection, unless evidence shows it was properly pumped within three years before inspection by a licensed commercial septic tank cleaner.
    • A failing system must be renovated; a properly treating system without an unsanitary condition need not meet current construction standards.
    • Only a department-certified inspector may conduct the inspection.
    • An inspection is valid for two years for ownership transfers during that period.

    dwelling units: 1-4 · inspection validity: 2 years (for ownership transfers during that period) · prior septic pumping evidence: <= 3 years (must be by a department-licensed commercial septic tank cleaner) · civil penalty for fraudulent report: 5000 USD (and certification suspension for one year)

    “If a building where a person resides, congregates, or is employed is served by a private sewage disposal system, the sewage disposal system serving the building shall be inspected prior to any transfer of ownership of the building.”
  • Well permitRequired

    Construction of private water-supply wells statewide in Iowa, including household, livestock, commercial, processing, irrigation, recreational, industrial, monitoring, dewatering, and related wells identified by the Iowa DNR.

    • A private well construction permit is required for all water-supply wells.
    • For private water-supply wells serving fewer than 25 individuals or fewer than 15 water-service connections, permits are issued by local county health departments, except Osceola County, which lacks authority to issue private well construction permits; the Iowa DNR handles permitting there.
    • The applicant must submit an application and county application fee; each county sets its own fee.
    • The county reviews completeness and location relative to contamination sources and issues or denies the permit in writing before construction proceeds.
    • The county and DNR must be allowed to visit the proposed well site before, during, and after construction.
    • Public water-supply wells serving 25 or more individuals or having 15 or more water-service connections require a Public Water Supply Construction Permit issued by Iowa DNR Water Supply Engineering; county private-well programs cannot issue those permits.
    • Private well permits are not required for geotechnical borings without well casing or screens, Geoprobe-style boreholes without temporary or permanent casing, and cathodic-protection wells.
    • Trench dewatering does not require a private well construction permit.
    • Separate water-allocation, NPDES, floodplain, or underground-injection permits may also be required depending on the project.

    public water supply threshold: >= 25 individuals served (A public-water-supply construction permit is also required at 15 or more water-service connections.) · public water supply threshold: >= 15 water-service connections (A public-water-supply construction permit is also required when 25 or more individuals are served.) · geothermal loop depth threshold: >= 20 feet (Closed-loop and open-loop geothermal systems at or beyond this depth require a private well construction permit.)

    “Private Well Construction Permits are required for all water supply wells, and for all geothermal systems - closed-loop and open-loop - that are 20 feet or greater in depth.”
  • county zoning authorityGeneral

    Iowa counties may adopt zoning ordinances for land and structures within the county but outside the corporate limits of any city.

    • Chapter 335 applies to any Iowa county at the option of its board of supervisors.
    • The zoning power is subject to Iowa Code section 335.2: ordinances generally do not apply to agricultural land, farm houses, farm barns, farm outbuildings, or other structures primarily adapted for agricultural purposes while so used, except that ordinances may apply to structures, buildings, dams, obstructions, deposits, or excavations in or on river or stream floodplains.
    • A county may not require an application, approval, or fee for an ordinance to be deemed inapplicable to qualifying agricultural land or structures.
    • A county may not regulate, restrict, or prohibit the location of permanent buildings or temporary structures used for consumer-fireworks sales pursuant to section 10A.519 in locations zoned commercial or industrial.
    • The board of supervisors may divide the county into zoning districts, and regulations may differ among districts.
    • Regulations and restrictions require public-hearing and notice procedures under sections 335.6 and 331.305; district boundaries must identify the affected township and section and, if possible, streets or roads.
    • Energy-conservation and solar-access objectives do not require zoning in a county that did not have zoning before July 1, 1981.
    “applicable to any county [...] at the option of the board of supervisors [...] outside of the corporate limits of any city.”
  • county building authorityGeneral

    Iowa counties may adopt, administer, and enforce county building codes and may administer and enforce the state building code for buildings, including residential construction, in county jurisdiction outside incorporated municipalities, subject to statutory limitations.

    • A county building code may not apply within the incorporated area of a city except at the city's option.
    • A county building code may not apply within a city's two-mile limit under Iowa Code §414.23 to the extent the city has adopted a building code within that two-mile limit.
    • A county building code may not apply to farm houses or other farm buildings primarily adapted for agricultural purposes while so used or under construction for that use.
    • Administration and enforcement are conducted as prescribed by local law or ordinance.
    • The state building code applies in a governmental subdivision only after the governing body adopts an ordinance accepting it and files a certified copy with the commissioner; the ordinance fixes the effective date, which must be no more than six months after adoption.
    • A local building department may prohibit commencement of construction until a permit is issued after showing compliance with applicable state building-code provisions.
    • Thermal-efficiency energy-conservation standards apply to construction containing heated or cooled enclosed space, but the commissioner must provide appropriate exceptions where applying an energy-conservation requirement would be impractical.
    “The power to adopt, administer, and enforce the state building code shall be exercised in accordance with chapter 103A. The power to adopt by ordinance, administer, and enforce a county building code, is subject to the following restrictions: a. A county building code shall not apply within the incorporated area of a city except at the option of the city, and shall not apply within a city’s two-mile limit referred to in section 414.23, to the extent that the city has adopted a building code within the two-mile limit. b. A county building code shall not apply to farm houses or other farm buildings which are primarily adapted for use for agricultural purposes, while so used or under construction for that use.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Camping on your land — Temporary camping generally, apart from the specifically documented travel-trailer occupancy permit.
  • Short-term rentals — Short-term rental use in Cerro Gordo County.

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Living off-grid in Cerro Gordo County, Iowa

Is Cerro Gordo County a good place to live off-grid or homestead?

Cerro Gordo County scores 49/100 on the Bolthole Index, a solid county profile. Its strengths: higher long-term carry cost and mixed durability signals. Watch-outs: workable self-sufficiency basics (35.8″/yr rainfall).

Do you need a building permit in Cerro Gordo County, Iowa?

Cerro Gordo County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Cerro Gordo County Department of Public Health (CG Public Health). Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

Can you live in an RV or tiny home on your land in Cerro Gordo County?

Living in an RV on your own land in Cerro Gordo County is allowed on a temporary basis only: Occupancy of a recreation vehicle or travel trailer outside a travel-trailer park. The Zoning Administrator may issue a temporary-use permit. The permit may not exceed fourteen days from the date granted. A tiny home is limited to specific cases. Confirm with the county before relying on it.

How much does land cost in Cerro Gordo County, Iowa?

Land in Cerro Gordo County runs about $9,033 per acre, based on the latest county data.

What is the water situation in Cerro Gordo County?

Cerro Gordo County gets about 35.8" of rain a year, with severe drought in roughly 13.3% of years.

How remote is Cerro Gordo County?

A representative private-land location has about 48,793 people within a 30-minute drive and 2,863,542 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

How Cerro Gordo compares in Iowa

Compare side-by-side →See all 99 Iowa counties ranked →