Bolthole Index

Washington County, Iowa

Building permits, zoning and septic rules in Washington County, Iowa

64Index Score / 100
#22 of 99 in Iowa

Unincorporated Washington County, Iowa requires neither a county building permit nor a county zoning permit for ordinary building projects12. Washington County Environmental Health handles septic and private-well permits; floodplain development and county-road driveway permits remain separate requirements34567. Inside Kalona, the city handles building permits and zoning89. For rural land within two miles of a city, ask that city whether its building or zoning codes apply10.

At a glance

Building permit
Not required for ordinary projects in unincorporated areas; floodplain permits are separate16
Zoning
None in unincorporated areas; no county zoning minimum lot size211
Septic / well permit
Required, issued by Washington County Environmental Health345
Owner-builder
Allowed; there is no county building permit to be exempt from12
Floodplain development permit
Required before any development in the mapped floodplain, including farm buildings13
Subdivision review
Minor: 2–5 lots on an existing street without major improvements; major: 6+ lots without improvements or 2+ requiring major improvements14
County-road driveway permit
Required before building a new entrance onto a county road7
RV living
No county zoning restriction in unincorporated areas; floodplain, septic and city rules can still apply1516

Who to call

Planning & zoning

Washington County Planning & Development

Publishes the county's rural building and development permit guidance, administers the subdivision ordinance, and is the office to call about extraterritorial (within-two-miles-of-a-city) questions

319-653-7710

Washington County Courthouse, 222 W Main St, Washington, IA 52353

Septic permits

Washington County Environmental Health

Issues well and septic permits and inspections for unincorporated Washington County

319-653-7782

environmental@co.washington.ia.us

2175 Lexington Blvd. Bldg 2, Washington, IA 52353

Floodplain permits

Washington County Environmental Health (Floodplain Administrator)

Reviews and issues Floodplain Development Permits for development in the mapped 100-year floodplain

319-653-7782

environmental@co.washington.ia.us

2175 Lexington Blvd. Bldg 2, Washington, IA 52353

Roads & driveways

Washington County Engineering & Secondary Roads

Reviews and approves new or modified driveway entrances onto Washington County roads and maintains the county's secondary road network

319-653-7731

703 E. 7th Street, Washington, IA 52353

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 Washington County means bringing your own water and power. The kit we’d start with:

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.

Do you need a building permit in Washington County, Iowa?

Washington County has not adopted building codes, so a building project in unincorporated Washington County does not need a county building permit117. Owner-builders may build their own homes because there is no county building permit from which to obtain an exemption, although state trade-licensing rules can still apply12. A project in the mapped floodplain needs a Floodplain Development Permit, and county officials may enter the property for permit and compliance inspections618. A new or changed entrance onto a county road also needs a driveway permit7. Land within two miles of an incorporated city may be subject to that city's building or zoning requirements, so contact the city before relying on the county rule10. Inside Kalona, building erection, moving, additions and structural alterations require a city building permit; private septic and well approvals still go through Washington County Environmental Health835.

Who handles building-permit questions in Washington County, Iowa?

Washington County has no general building-permit counter because the county has not adopted building codes17. Washington County Planning & Development, at the courthouse, publishes rural building guidance and administers subdivision review19. Washington County Environmental Health handles floodplain development permits and well or septic questions, while Engineering & Secondary Roads handles new entrances onto county roads202122. Floodplain projects are the inspection exception: county officials may inspect the property while reviewing the application and checking compliance18. New electrical work remains subject to state inspections and contractor licensing even without a county building permit17.

Does Washington County have zoning?

Washington County has no current county zoning districts or county zoning permits for unincorporated land because its former zoning ordinance was rescinded in 2013232. Unincorporated Washington County therefore has no county zoning minimum for dwelling size, no county zoning setbacks, no county lot-coverage cap and no county zoning building-height limit24252627. County zoning also sets no minimum lot size in unincorporated Washington County11. Subdivision review, septic approval, floodplain rules and driveway permits can still shape a project143137. A city may enforce its own rules on land within two miles of its limits, so ask that city before buying or building there10. Inside Kalona, the city administers its own zoning; Washington County Environmental Health remains the contact for private septic systems and wells935.

How do septic and well permits work in Washington County, Iowa?

Washington County Environmental Health is the local authority for private septic systems; Iowa requires a construction permit before installing or altering a private sewage disposal system, and new systems need a final inspection before backfilling284. Repairs that do not change treatment or disposal are not treated as alterations, but discharge restrictions still apply4. Washington County has 0% of soils rated “not limited” for a conventional drain field; get a site evaluation rather than assuming a standard system will work, and allow for an engineered alternative if needed29. Washington County Environmental Health also issues household private-well permits5. Construction or reconstruction of a nonpublic water-supply well 20 feet or deeper needs approval before work begins; replacement wells and physical-dimension modifications also require a permit30. The state rule lists a $125 standard fee but allows delegated counties to set a different fee, so ask Environmental Health for Washington County’s charge3021. Iowa generally requires a certified septic inspection before a qualifying property transfer, with the report valid for 2 years31.

Can you live in an RV, manufactured home or tiny home in Washington County?

RV occupancy on private land in unincorporated Washington County has no county zoning restriction, but floodplain, septic, nuisance, state and nearby-city rules can still apply32. Temporary camping likewise has no county zoning restriction there33. The same county-zoning answer applies to tiny homes, manufactured homes and accessory dwellings on private land343536. Iowa law adds that a county may not disallow a manufactured home solely because it is a manufactured home, where county zoning applies37. An RV in the regulated floodplain avoids factory-built-home anchoring and elevation requirements only when it stays for less than 180 consecutive days, remains fully licensed and is ready for highway use16. Longer placement or an RV that is not highway-ready must meet the ordinance's anchoring and elevation requirements16. Contact Environmental Health about sanitation and floodplain limits, and ask the relevant city about land within two miles of its limits2110.

Building a home in Washington County, Iowa: what to do, in order

  1. Confirm that the parcel is in unincorporated Washington County, where building projects need neither a county building permit nor a county zoning permit12.
  2. If the parcel is within two miles of an incorporated city, ask that city whether it enforces building or zoning rules there10.
  3. Apply to Washington County Environmental Health for the well or septic approval needed for the site; a well 20 feet or deeper needs its permit before drilling213828.
  4. Check the flood map before choosing a building pad; where more than 10 square miles of land drains to the site, an Iowa DNR Joint Application Form comes first39; submit the complete application to the Floodplain Administrator, who normally reviews a compliant application within one week, and pay the $50 fee to the Washington County Treasurer4041.
  5. Obtain a driveway permit before creating or changing access to a county road, and give the County Engineer written notice at least 48 hours before construction starts7.
  6. Contact the Iowa Department of Transportation instead when the entrance connects to a state highway42.
  7. If dividing land, start with the Subdivision Coordinator; a pre-application conference is recommended and has no fee, while minor subdivision applications are due 30 days before the desired Board meeting43.
  8. Arrange any state-regulated electrical work and inspections that apply even without a county building permit17.

What should you check before buying land in Washington County, Iowa?

Soils: Washington County has 0% of soils rated “not limited” for a conventional septic drain field; a site evaluation determines whether a standard or engineered system can work29. Terrain: 93.9% of county land has slopes of 15% or less, and 10.8% is wooded4445. Flood risk: farmhouses, barns, bins and sheds in the floodplain need a Floodplain Development Permit, with no farmer exemption46. Access: a county-road driveway needs the County Engineer’s approval and final inspection, and the owner or tenant pays for construction and materials7. Subdividing: minor subdivisions generally have 2–5 lots fronting an existing street without major improvements; major subdivisions include 6 or more lots without improvements or 2 or more requiring major improvements, including streets14. Agricultural-use survey divisions can skip the usual application, departmental review and fees, but the plat must meet specified requirements and state that the parcel is valid for agricultural use only47. Taxes: the effective property tax rate is about 1.3%, with a median annual bill around $2,6884849. Farmland value averages about $9,552 an acre50.

Watch-outs

  • RV occupancy and temporary camping have no county zoning restriction on unincorporated land, but an RV in the regulated floodplain faces duration, highway-readiness, anchoring and elevation conditions323316.
  • A floodplain permit applies even to farm buildings: sheds, bins, tanks and farmhouses in the mapped floodplain all need a Floodplain Development Permit, with no farmer exemption46.
  • If your land is within two miles of an incorporated city, that city, not the county, may control building or zoning there, even though unincorporated Washington County has no county zoning ordinance102.

Sources

  1. Rural Building & Development Permits, quoted and re-checked
  2. Zoning Ordinance (Rescinded on September 27, 2013), quoted and re-checked
  3. Private Onsite Septic Systems (2026 county census)
  4. Chapter 69 — Private Sewage Disposal Systems (Iowa statewide rule), quoted and re-checked
  5. Private Well Construction Permits (Iowa statewide rule), quoted and re-checked
  6. Instructions – Floodplain Development Permit, quoted and re-checked
  7. washingtoncounty.iowa.gov, quoted and re-checked
  8. Kalona: official source (Washington County), quoted and re-checked
  9. Kalona: Chapter 165 Zoning Regulations (Washington County), quoted and re-checked
  10. Rural Building & Development Permits, quoted and re-checked
  11. Iowa law on county zoning and building authority
  12. Iowa law on county zoning and building authority
  13. Floodplain Management Ordinance 13-1, quoted and re-checked
  14. Subdivision & Platting, quoted and re-checked
  15. Zoning Ordinance (Rescinded on September 27, 2013), quoted and re-checked
  16. Floodplain Management Ordinance 13-1, quoted and re-checked
  17. Rural Building & Development Permits, quoted and re-checked
  18. Application for Floodplain Development Permit, quoted and re-checked
  19. Washington County Planning & Development (washingtoncounty.iowa.gov)
  20. Washington County Environmental Health (Floodplain Administrator) (washingtoncounty.iowa.gov)
  21. Washington County Environmental Health (washingtoncounty.iowa.gov)
  22. Washington County Engineering & Secondary Roads (washingtoncounty.iowa.gov)
  23. Zoning Ordinance (Rescinded on September 27, 2013), quoted and re-checked
  24. Zoning Ordinance (Rescinded on September 27, 2013), quoted and re-checked
  25. Zoning Ordinance (Rescinded on September 27, 2013), quoted and re-checked
  26. Zoning Ordinance (Rescinded on September 27, 2013), quoted and re-checked
  27. Zoning Ordinance (Rescinded on September 27, 2013), quoted and re-checked
  28. Private Onsite Septic Systems, quoted and re-checked
  29. 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
  30. Iowa Administrative Code Chapter 567-49, Nonpublic Water Supply Wells, quoted and re-checked
  31. Iowa Code §455B.172, Jurisdiction of department and local boards (Iowa statewide rule), quoted and re-checked
  32. Zoning Ordinance (Rescinded on September 27, 2013), quoted and re-checked
  33. Zoning Ordinance (Rescinded on September 27, 2013), quoted and re-checked
  34. Zoning Ordinance (Rescinded on September 27, 2013), quoted and re-checked
  35. Zoning Ordinance (Rescinded on September 27, 2013), quoted and re-checked
  36. Zoning Ordinance (Rescinded on September 27, 2013), quoted and re-checked
  37. Iowa Code §335.30, Manufactured and modular homes (Iowa statewide rule), quoted and re-checked
  38. Code of Ordinances, Washington County, Iowa, quoted and re-checked
  39. Rural Building & Development Permits, quoted and re-checked
  40. Instructions – Floodplain Development Permit, quoted and re-checked
  41. Floodplain FAQ – Frequently Asked Questions, quoted and re-checked
  42. Access Management (Iowa statewide rule), quoted and re-checked
  43. Washington County Subdivision Ordinance, Amended September 19, 2024, quoted and re-checked
  44. Share of land at 15% slope or less: Bolthole Index county data
  45. Wooded share of land: Bolthole Index county data
  46. Floodplain FAQ, quoted and re-checked
  47. Washington County Subdivision & Platting Ordinance, amended September 19, 2024, quoted and re-checked
  48. Effective property tax rate: Bolthole Index county data
  49. Median property tax bill: Bolthole Index county data
  50. Farmland value per acre (USDA census): 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.

Found land here? Start a Property Hunt →

Compared with neighboring counties

Unlike 4 of its 6 neighbors, Washington County requires no county building permit for a home.

RuleWashington CountyJefferson CountyLouisa CountyHenry CountyKeokuk CountyJohnson CountyIowa County
Building permitNot requiredNot requiredRequiredRequiredNot requiredRequiredLimited
County zoningNoNoYesYesNot publishedYesNo
Septic permitsCounty Env. Health Dept.County Env. HealthCounty Public HealthCounty Env. HealthCounty Public HealthCounty Public Health Dept.IA County Env. Health Dept.

County locator

Washington County in Iowa

64
County map
Washington County highlighted among the Iowa counties · colored by Index score

How Washington County scores

Seclusion46100% ev.
Self-Sufficiency46100% ev.
Admin Boringness91100% ev.
Durability56100% ev.
Property Autonomy51100% ev.
Carry Cost58100% 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 →

$239kTypical home
1.3%Property tax
$9,552Land / acre
38"Annual rain
11.8% of yrsSevere drought
7.4 / yr (+6.5)Mid-century 100°F days
15.5 daysMid-century dry spell
1.95" (+11%)Mid-century 1-day rain
1.8×Wildfire change factor
100%Forward climate coverage
$1,602Home insurance / yr
2.5% / yrInsurance growth
1.24%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
31,320People within 30 min
1,560,861People within 2 hr
23,223Radius comparison (15 mi)
39.7People / sq mi
1.3%Federal land
93.9%Land at 15% slope or less
0%Soils rated "not limited" for septic (strict USDA rating)
0 acWorkable land screen
10.8%Wooded land
54.5 tonsBiomass / forest ac
50°FAvg temp

Scout Washington County

Camp here before you commitBook a few nights nearby on Hipcamp →Already own land here?Earn money hosting campers — get $100 when you become a Hipcamp host →

Some links are affiliate or referral links — we may earn a commission, at no cost to you.

Property hunt

Find land. Bring the promising ones back.

Search live inventory elsewhere, then cost and vet each candidate here. No copied listings, account, or paid data feed.

View your full hunt →
ZillowLand & lotsRealtor.comLand listingsLandSearchRural & vacant land

Each button opens a current land search for Washington County. Listing sites control their own results and filters.

Analyze a property
Add setup-cost allowances

Use rough quotes or placeholders. Blank fields count as $0.

Working estimate

—land + entered setup costs
Asking $ / acre
—
Setup allowance
—
All-in $ / acre
—

A planning estimate, not a valuation or contractor quote. The USDA benchmark includes farm land and buildings; it is context, not a parcel comp.

Before an offer

Parcel due diligence

0/8 checked

Saved properties and checklist progress stay on this device. Bolthole Index does not receive them.

Cities and towns in Washington 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: Ainsworth · Brighton · Coppock · Crawfordsville · Riverside · Washington · Wellman · West Chester

Answers from the rulebook for Washington County

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

Washington County rules

  • Building permitLimited

    Any man-made change to improved or unimproved real estate in the 100-year floodplain shown as Zone A on the Washington County Flood Insurance Rate Map, including placement or repair of structures.

    • A Floodplain Development Permit must be obtained before the project proceeds.
    • The application requires the property owner and builder or contractor information, project description, site plan, flood elevations, the property owner's ink signature, and a $50 permit fee.
    • For substantially damaged existing structures, the structure must be elevated at least one foot above the 100-year base flood elevation or floodproofed and comply with Floodplain Management Ordinance 13-1.
    • The project must be submitted to the Floodplain Administrator; work may commence upon receipt of the permit.

    permit fee: 50 USD · substantial damage threshold: >= 50 percent · minimum elevation above 100-year base flood elevation: >= 1 foot

    “A Floodplain Development Permit is required when you plan to make any man-made change to improved or unimproved real estate in the 100-year floodplain shown as “Zone A” on the Washington County Flood Insurance Rate Map (FIRM).”
    2 more reviewed findings on this topic
    • Not required — Building projects in the unincorporated areas of Washington County, Iowa.
      “BUILDING PERMITS – Washington County has not adopted any building codes and therefore a county building permit is not required for building projects located in the unincorporated areas. However, other permits may be required for certain projects.”
    • Not required — Building projects in unincorporated Washington County outside separately applicable permit regimes.
      “Washington County has not adopted any building codes and therefore a county building permit is not required for building projects located in the unincorporated areas. However, other permits may be required for certain projects.”
  • Owner-builder exemption · follows from the permit answerNot needed

    Unincorporated Washington County: no county building permit is required, so there is no permit to be exempt from and you may build your own home. State licensing for electrical, plumbing and HVAC work may still apply.

    • Washington County has not adopted any building codes.
    • Other permits may be required for certain projects.
    “BUILDING PERMITS – Washington County has not adopted any building codes and therefore a county building permit is not required for building projects located in the unincorporated areas. However, other permits may be required for certain projects.”
  • Building code adoptedNot adopted

    County building-code adoption and county building permits for building projects in the unincorporated areas of Washington County, Iowa.

    • Washington County states that it has not adopted any building codes.
    • A county building permit is not required for building projects in the unincorporated areas.
    • Other permits may be required for certain projects.
    • The State of Iowa requires inspections of all new electrical work done within the county, and electrical contractors must be state licensed.
    • Projects within two miles of an incorporated city may be subject to city building codes and permits.
    “Washington County has not adopted any building codes and therefore a county building permit is not required for building projects located in the unincorporated areas. However, other permits may be required for certain projects. See STATE OF IOWA PERMITS and EXTRATERRITORIAL JURISDICTION below.”
    One more reviewed finding on this topic
    • Not adopted — County building-code adoption and county building permits for building projects in Washington County's unincorporated areas.
      “Washington County has not adopted any building codes”
  • InspectionsLimited

    Projects requiring a Washington County Floodplain Development Permit.

    • County officials may enter the property for inspections related to permit application and compliance.
    • The floodplain permit application includes pre-construction, elevation/floodproofing, and final inspection fields.
    • For substantially damaged structures, before the final inspection the applicant must provide the required elevation or floodproofing certificate.
    “The undersigned permits County Officials to enter the property for the purpose of inspections related to permit application and compliance.”
  • County-wide zoningAbsent

    County zoning permits for uses and building projects in the unincorporated areas of Washington County, Iowa.

    • The county's former Zoning Ordinance was rescinded in 2013.
    • Floodplain development permits remain required before projects in the 100-Year Floodplain.
    • Projects within two miles of an incorporated city may be subject to that city's building or zoning codes and permits.
    “Washington County’s former Zoning Ordinance was rescinded in 2013, therefore a county zoning permit is not required for any uses or building projects in the unincorporated areas.”
    One more reviewed finding on this topic
    • Absent — County zoning permits and the former county zoning ordinance for uses and building projects in Washington County's unincorporated areas.
      “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013.”
  • Local zoningVaries (with conditions)

    Aggregate local zoning in Washington County, including unincorporated areas near incorporated cities; municipal rules may apply within two miles of an incorporated city.

    • The county does not require county zoning permits in unincorporated areas.
    • For a project within two miles of an incorporated city, the applicant should contact the city to determine whether the city enforces building or zoning codes and requires permits in the rural location.
    • The cited county source does not identify which municipalities exercise this jurisdiction or specify municipal exemptions, inspections, or certificates of occupancy.

    extraterritorial distance: <= 2 miles (Measured from an incorporated city; municipal enforcement must be confirmed with the city.)

    “within two miles of an incorporated City”
    One more reviewed finding on this topic
    • Varies (with conditions) — Local zoning or building-code controls affecting rural property within two miles of an incorporated city in Washington County.
      “contact the City to determine if they enforce any building or zoning codes”
  • Zoning districtsNot published

    County zoning districts and county zoning permits for uses or building projects in unincorporated Washington County.

    • The former county zoning ordinance became effective July 1, 2010 and was rescinded September 27, 2013.
    • Other rural building and development permits may still be required depending on the project.
    • This claim does not address municipal zoning or subdivision, floodplain, septic, roadway, or other regulations.

    former zoning ordinance effective date: 2010-07-01 · zoning ordinance rescission date: 2013-09-27

    “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County.”
    One more reviewed finding on this topic
    • Not published — County zoning districts and county zoning permits in unincorporated Washington County.
      “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County. Please note that depending upon the type of project other Rural Building & Development Permits may be required.”
  • Minimum dwelling sizeNone

    County zoning minimum dwelling-size requirements for uses and building projects in unincorporated Washington County.

    • The absence is limited to county zoning requirements.
    • Other Rural Building & Development Permits may be required depending on the project.
    • Subdivision, floodplain, septic, and other applicable state or local requirements may still apply.
    “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County.”
  • Minimum lot size · by state lawNone

    Unincorporated Washington County: no county rule sets this, because Washington County's own reviewed answer confirms it has no county-wide zoning ordinance.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • The former Washington County Zoning Ordinance became effective July 1, 2010 and was rescinded September 27, 2013.
    • Other Rural Building & Development Permits may still be required depending on the project.
    “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013.”
  • SetbacksNone

    County zoning setback requirements in unincorporated Washington County.

    • The absence is limited to county zoning requirements.
    • Other Rural Building & Development Permits may be required depending on the project.
    • Subdivision, floodplain, septic, and other applicable state or local requirements may still apply.
    “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County.”
  • Lot coverageNone

    County zoning lot-coverage requirements in unincorporated Washington County.

    • The absence is limited to county zoning requirements.
    • Other Rural Building & Development Permits may be required depending on the project.
    • Subdivision, floodplain, septic, and other applicable state or local requirements may still apply.
    “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County.”
  • Building heightNone

    County zoning building-height requirements in unincorporated Washington County.

    • The absence is limited to county zoning requirements.
    • Other Rural Building & Development Permits may be required depending on the project.
    • Subdivision, floodplain, septic, and other applicable state or local requirements may still apply.
    “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County.”
  • Living in an RVLimited

    Recreational vehicles placed in the county-regulated floodplain or special flood-hazard areas of unincorporated Washington County.

    • For exemption from the ordinance's factory-built-home anchoring and elevation requirements, the recreational vehicle must be located on the site for less than 180 consecutive days.
    • The recreational vehicle must be fully licensed and ready for highway use.
    • Ready for highway use means the vehicle is on its wheels or jacking system, attached to the site only by quick-disconnect utilities and security devices, and has no permanently attached additions.
    • A recreational vehicle located on the site for more than 180 consecutive days or not ready for highway use must satisfy the ordinance requirements regarding anchoring and elevation of factory-built homes.
    • Floodplain development requires the appropriate permit and the Floodplain Administrator administers the ordinance.

    maximum temporary placement period: < 180 consecutive days (The ordinance separately regulates vehicles placed for more than 180 consecutive days.)

    “Recreational vehicles are exempt from the requirements of Section III(E) of this Ordinance regarding anchoring and elevation of factory-built homes when the following criteria are satisfied. a.The recreational vehicle shall be located on the site for less than 180 consecutive days, and, b.The recreational vehicle must be fully licensed and ready for highway use.”
    3 more reviewed findings on this topic
    • Unrestricted — Long-term recreational-vehicle occupancy on private land in unincorporated Washington County outside rules that independently apply, including floodplain regulations.
      “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County. Please note that depending upon the type of project other Rural Building & Development Permits may be required.”
    • Unrestricted (with conditions) — RV occupancy on private land in unincorporated Washington County, insofar as county zoning regulation is concerned.
      “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County. Please note that depending upon the type of project other Rural Building & Development Permits may be required.”
    • Unrestricted — RV occupancy on private land in unincorporated Washington County, Iowa, insofar as county zoning is concerned.
      “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County. Please note that depending upon the type of project other Rural Building & Development Permits may be required.”
  • Camping on your landUnrestricted (with conditions)

    Temporary camping on private land in unincorporated Washington County, insofar as county zoning regulation is concerned.

    • The county zoning ordinance was rescinded, so no county zoning permit is required for any use or building project in unincorporated areas.
    • Other Rural Building & Development Permits may be required depending on the project.
    • A Floodplain Development Permit is required before starting a project in the 100-Year Floodplain.
    • Within two miles of an incorporated city, the city may enforce building or zoning codes and require permits in the rural location.
    • Well or septic treatment projects require contact with the County Environmental Department before work begins.
    “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County. Please note that depending upon the type of project other Rural Building & Development Permits may be required.”
    One more reviewed finding on this topic
    • Unrestricted — Temporary camping on private land in unincorporated Washington County, Iowa, insofar as county zoning is concerned.
      “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County. Please note that depending upon the type of project other Rural Building & Development Permits may be required.”
  • Tiny homesUnrestricted (with conditions)

    Tiny-home occupancy on private land in unincorporated Washington County, insofar as county zoning regulation is concerned.

    • The county zoning ordinance was rescinded, so no county zoning permit is required for any use or building project in unincorporated areas.
    • Other Rural Building & Development Permits may be required depending on the project.
    • A Floodplain Development Permit is required before starting a project in the 100-Year Floodplain.
    • Within two miles of an incorporated city, the city may enforce building or zoning codes and require permits in the rural location.
    • Well or septic treatment projects require contact with the County Environmental Department before work begins.
    “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County. Please note that depending upon the type of project other Rural Building & Development Permits may be required.”
    One more reviewed finding on this topic
    • Unrestricted — Tiny-home occupancy on private land in unincorporated Washington County, Iowa, insofar as county zoning is concerned.
      “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County. Please note that depending upon the type of project other Rural Building & Development Permits may be required.”
  • Manufactured homesUnrestricted (with conditions)

    Manufactured-home occupancy on private land in unincorporated Washington County, insofar as county zoning regulation is concerned.

    • The county zoning ordinance was rescinded, so no county zoning permit is required for any use or building project in unincorporated areas.
    • A Floodplain Development Permit is required before starting any project in the 100-Year Floodplain, including placement of mobile homes.
    • Within two miles of an incorporated city, the city may enforce building or zoning codes and require permits in the rural location.
    • Well or septic treatment projects require contact with the County Environmental Department before work begins.
    “ZONING PERMITS – Washington County’s former Zoning Ordinance was rescinded in 2013, therefore a county zoning permit is not required for any uses or building projects in the unincorporated areas.”
    One more reviewed finding on this topic
    • Unrestricted — Manufactured-home occupancy on private land in unincorporated Washington County, Iowa, insofar as county zoning is concerned.
      “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County. Please note that depending upon the type of project other Rural Building & Development Permits may be required.”
  • Accessory dwellingsUnrestricted (with conditions)

    Accessory-dwelling occupancy on private land in unincorporated Washington County, insofar as county zoning regulation is concerned.

    • The county zoning ordinance was rescinded, so no county zoning permit is required for any use or building project in unincorporated areas.
    • Other Rural Building & Development Permits may be required depending on the project.
    • A Floodplain Development Permit is required before starting a project in the 100-Year Floodplain.
    • Within two miles of an incorporated city, the city may enforce building or zoning codes and require permits in the rural location.
    • Well or septic treatment projects require contact with the County Environmental Department before work begins.
    “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County. Please note that depending upon the type of project other Rural Building & Development Permits may be required.”
    One more reviewed finding on this topic
    • Unrestricted — Accessory dwelling units on private land in unincorporated Washington County, Iowa, insofar as county zoning is concerned.
      “The Washington County Zoning Ordinance, which became effective July 1, 2010, was rescinded on September 27, 2013. A County Zoning Permit is no longer required for any uses or building projects in the unincorporated areas of Washington County. Please note that depending upon the type of project other Rural Building & Development Permits may be required.”
  • Who permits septicCounty

    Private onsite wastewater systems in Washington County, including unincorporated county areas.

    • The county page identifies Washington County requirements under Iowa Administrative Code Chapter 69 and Chapter 66 of the Washington County Code of Ordinances.
    • Washington County Environmental Health is responsible for septic system inspections.
    “Chapter 567-69 of the Iowa Administrative Code, entitled “On-site Wastewater Treatment and Disposal Systems,” is adopted and incorporated by reference as if fully set forth herein.”
  • Well permitRequired

    New private wells, replacement wells, and modifications to the physical dimensions of nonpublic water supply wells in Washington County, Iowa.

    • Washington County adopts Iowa Administrative Code chapter 567-49 for nonpublic water wells.
    • The rules apply to construction and reconstruction of all nonpublic water supply wells 20 feet or greater in depth.
    • A permit must be obtained before well construction or reconstruction begins.
    • The permit is issued by the Iowa Department of Natural Resources or by a county authorized to issue permits under chapter 567-49.
    • Private well construction permits are not required for public water supply wells; elevator shafts; underground storage tank monitoring wells covered under chapter 567-135; solid-waste-facility monitoring wells covered under chapter 567-113; temporary test holes or wells in place for seven consecutive days or less; soil borings; mineral, rock, gas, and other non-groundwater wells or exploration boreholes; or monitoring wells required as part of a department permit or construction approval.
    • Dewatering wells are exempt from construction standards, but a construction permit is required when a dewatering well will be in place for more than seven consecutive days.
    • Applications require a fully completed form and nonrefundable fee; the standard fee is $125 payable to the department unless a county is authorized to issue permits, in which case the county may set a different fee.
    • A complete application must list wells on contiguous property and provide the well location by legal land description or latitude and longitude.
    • A permit is not a water withdrawal permit; a separate water withdrawal permit may be required for withdrawals exceeding 25,000 gallons per day.
    • Each permitted well must be constructed by a certified well contractor, and the permit expires one calendar year after issuance if construction has not started.

    minimum regulated well depth: >= 20 feet (Rules apply to nonpublic water supply wells 20 feet or greater in depth.) · standard application fee: 125 USD (Unless a county is authorized to issue permits and sets a different fee.) · water withdrawal threshold: > 25000 gallons per day (Separate water withdrawal permitting may apply.) · permit expiration: 1 calendar year (If construction has not started before expiration, a new application and fee are required.)

    “Chapter 567-49 of the Iowa Administrative Code, entitled “Nonpublic Water Wells,” is adopted and incorporated by reference as if fully set forth herein.”
  • Agricultural exemptionAvailable (with conditions)

    Plat-of-survey divisions of land in unincorporated Washington County that have been and will remain agricultural use.

    • The division must have been and will remain Agricultural Use.
    • The plat is exempt from the application procedure, departmental review, and fees otherwise required by the subdivision ordinance.
    • The plat must meet §§45.23, 45.24, and 45.25.1 and be submitted to the Subdivision Coordinator for review and signature.
    • The plat must state that the parcel is valid for agricultural use only.
    “A Plat of Survey for the division of land which has been and will remain Agricultural Use shall be exempt from the application procedure, departmental review and fees otherwise required by this ordinance.”
    One more reviewed finding on this topic
    • Not available (with conditions) — Agricultural development in Washington County floodplains, including farmhouses, farm buildings, bins, sheds, tanks, and other outbuildings.
      “No, all development in the floodplain, including farmhouses, farm buildings, bins, sheds, tanks and other outbuildings requires a Floodplain Development Permit.”
  • Subdividing landRegulated (with conditions)

    All plats, corrections, modifications, vacations, and land divisions constituting subdivisions in unincorporated Washington County, subject to the ordinance's exemptions and special procedures.

    • The ordinance applies to all unincorporated territory or land in Washington County and to plats, corrections, or modifications submitted after adoption.
    • Major subdivisions include six or more lots without improvements fronting an existing street, or two or more lots requiring major improvements including streets.
    • Minor subdivisions generally involve two to five lots fronting an existing street without new major improvements.
    • Exemptions or partial exemptions include cemetery burial lots, acquisition plats, auditor's plats, vacations and corrections, divisions into one-quarter, one-half, or forty acres or more without a new street, easement, or dedication, agricultural-use plat-of-survey divisions, state right-of-way divisions, retracement plats, and the first-split rule.
    • Agricultural-use plat-of-survey divisions remain subject to specified plat, monument, and survey requirements and must state that the parcel is valid for agricultural use only.
    • Within municipal extraterritorial areas, both the municipality and county may review unless a 28E or similar agreement governs.

    major subdivision threshold: 6 or more lots without improvements, or 2 or more lots requiring major improvements including streets · minor subdivision threshold: 2 to 5 lots total, fronting an existing street, without new major improvements

    “The Subdivision Ordinance of Washington County, Iowa, shall apply to all of the unincorporated territory or land in Washington County, Iowa. This ordinance applies to all plats, corrections or modifications of plats and vacations submitted after the date of adoption of this Ordinance.”
  • Driveway accessRequired

    New entrance locations and changes or modifications to existing entrances onto Washington County roads.

    • The County Engineer determines adequate sight distance, slope, culvert requirements, entrance dimensions, and other criteria.
    • A minimum 16-foot entrance top and minimum 30-foot culvert pipe are required where applicable.
    • Entrances on gravel or dirt roads must have 3:1 side slopes; entrances on paved roads must have 8:1 side slopes for culverts and 10:1 side slopes for dry fills.
    • Written notice must be given to the County Engineer at least 48 hours before construction.
    • Final approval requires inspection and approval by the County Engineer or authorized agent.
    • The property owner or tenant is responsible for initial entrance construction and materials; Washington County does not provide dirt, pipe, or other materials.

    minimum entrance top: >= 16 feet · minimum culvert pipe length: >= 30 feet · minimum culvert pipe size: >= 15 inches · advance written notice: >= 48 hours (before commencement of construction)

    “Permit Required - Anyone creating a new entrance location or any change or modification of an existing entrance onto County roads shall first be required to obtain a permit as required in the preceding section. (Driveway Permit )”
    One more reviewed finding on this topic
    • Required — Anyone creating a new entrance location or changing or modifying an existing entrance onto a Washington County road.
      “Permit Required - Anyone creating a new entrance location or any change or modification of an existing entrance onto County roads shall first be required to obtain a permit as required in the preceding section. (Driveway Permit )”
  • Building in a floodplainRequired

    Building, remodeling, or development projects in the floodplain in unincorporated Washington County, including man-made changes such as buildings, structures, mining, dredging, filling, grading, paving, excavation, drilling, and placement of factory-built or mobile homes.

    • A Floodplain Development Permit must generally be obtained before starting the project, with few exceptions.
    • All floodplain development, including farmhouses, farm buildings, bins, sheds, tanks, and other outbuildings, requires a Floodplain Development Permit.
    • Washington County must ensure applicable federal and state permits have been obtained before issuing the county permit.
    • Construction projects in rural Washington County located in watersheds with greater than 10 square miles of upstream drainage first require an Iowa DNR Joint Application Form before applying to Washington County.

    upstream drainage threshold: > 10 square miles (A Joint Application Form from the Iowa DNR is required first.)

    “Q: Do I need a permit when developing my property in the floodplain? A: Yes, with few exceptions you will need to obtain a Floodplain Development Permit prior to starting any building, remodel or development project in the floodplain.”
    One more reviewed finding on this topic
    • Required — Any floodplain development in Washington County's unincorporated areas, including man-made changes to improved or unimproved real estate.
      “Permit Required - A Floodplain Development Permit issued by the Administrator shall be secured prior to any floodplain development (any man-made change to improved and unimproved real estate, including but not limited to buildings or other structures, mining, filling, grading, paving, excavation or drilling operations), including the placement of factory-built homes.”
  • Permit feesPublished (with conditions)

    The Washington County Floodplain Development Permit for projects in the unincorporated areas of Washington County.

    • The fee applies to the Floodplain Development Permit.
    • The fee is payable to the Washington County Treasurer.

    Floodplain Development Permit fee: 50 USD

    “Q: Is there a fee for the Floodplain Development Permit? A: Yes, the fee is $50 made payable to the Washington County Treasurer.”
    One more reviewed finding on this topic
    • Published (with conditions) — Floodplain Development Permits for development in Washington County's unincorporated areas.
      “2. A $50.00 permit fee made payable to Washington County Treasurer.”
  • Permit processPublished (with conditions)

    Floodplain development in the mapped 100-year floodplain Zone A areas of Washington County.

    • The application must be complete and include owner/builder information, property location, work description and future use, site plan, 100-year flood elevation from Iowa DNR, lowest-floor or floodproofing elevation, and owner signature in ink.
    • For nonconforming uses or structures, contractor’s bid, appraisal, assessor record, and plans or drawings are also required.
    • If an existing structure is substantially damaged at 50% or greater damage from any event, it must be elevated at least one foot above the 100-year base flood elevation or floodproofed and meet Floodplain Management Ordinance 13-1.
    • The completed application is submitted to the Floodplain Administrator; staff normally review it within one week, and work may commence upon receipt of the permit.

    substantial damage threshold: >= 50 percent (damage from any event) · elevation above 100-year base flood elevation: >= 1 foot (or floodproofing) · normal staff review time: within one week

    “Application Review: After receiving a completed application, the forms are normally reviewed by staff within one week. If all applicable provisions of the Washington County Floodplain Development Ordinance are satisfied a Flood Plain Development Permit will be mailed. Your project can commence upon receipt of this permit.”
    2 more reviewed findings on this topic
    • Published (with conditions) — Floodplain Development Permit applications in Washington County's unincorporated areas.
      “Once the Floodplain Administrator has received your completed application it will normally be reviewed and you will receive your permit within one week.”
    • Published (with conditions) — Subdivision and platting applications in unincorporated Washington County, Iowa.
      “The Subdivision Ordinance of Washington County, Iowa, shall apply to all of the unincorporated territory or land in Washington County, Iowa. This ordinance applies to all plats, corrections or modifications of plats and vacations submitted after the date of adoption of this Ordinance.”

Iowa rules that apply here

  • 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.”
  • Septic permitRequired

    Installation or alteration of private sewage disposal systems (PSDSs) statewide in Iowa, including systems serving four homes or fewer or fewer than 15 people.

    • A construction permit issued by the administrative authority must be obtained before construction.
    • The administrative authority is the Iowa DNR or the local county board of health.
    • Local boards of health have primary responsibility for PSDSs serving four homes or fewer or fewer than 15 people; the Iowa DNR has primary responsibility for larger public systems.
    • Repair of existing PSDS components that does not change treatment or disposal of the waste is not considered an alteration, but discharge restrictions continue to apply.
    • When a publicly owned treatment works is available, or a local ordinance requires connection, a PSDS may not be installed, repaired, or rehabilitated; a POTW may be considered unavailable when it is more than 200 feet from the proposed building or exterior drainage facility, subject to the administrative authority’s final determination.
    • When a POTW is unavailable, every building where persons generate domestic sewage must be provided with an approved PSDS; a holding tank may be used only if all other PSDS options are impractical.
    • All constructed or altered PSDSs must comply with Chapter 69, and newly constructed systems require an administrative-authority final inspection before backfilling.
    • Systems discharging to designated waters of the state or subsurface drainage tile must comply with NPDES General Permit No. 4 and submit a Notice of Intent before use.

    POTW distance threshold: <= 200 feet (A POTW may be considered unavailable when it is more than 200 feet from the proposed building or exterior drainage facility.) · regulated residential scale: 4 homes or fewer or less than 15 people (Larger public systems are primarily regulated by the Iowa DNR.)

    “69.1(4) Construction permit required. No PSDS shall be installed or altered as described in 69.1(3)“b” unless a construction permit issued by the administrative authority is obtained prior to construction. PSDS installation shall be in accordance with these rules.”
  • 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.”
  • 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.

  • Off-grid sanitation — Off-grid sanitation and private onsite wastewater treatment in Washington County, Iowa.
  • Mandatory utility hookup — Connection to public water or sewer systems in Washington County, Iowa.
  • Short-term rentals — Short-term rental use in Washington County, Iowa, including unincorporated areas.

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 Washington County, Iowa

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

Washington County scores 64/100 on the Bolthole Index, a strong county profile. Its strengths: low administrative friction for a quiet rural property and higher long-term carry cost.

Do you need a building permit in Washington County, Iowa?

Washington County does not require a county building permit for a home in unincorporated areas, and it has no county-wide zoning. Onsite septic is permitted by Washington County Environmental Health Department. 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 Washington County?

Living in an RV on your own land in Washington County is limited to specific cases: Recreational vehicles placed in the county-regulated floodplain or special flood-hazard areas of unincorporated Washington County. For exemption from the ordinance's factory-built-home anchoring and elevation requirements, the recreational vehicle must be located on the site for less than 180 consecutive days. The recreational vehicle must be fully licensed and ready for highway use. A tiny home is allowed. Confirm with the county before relying on it.

How much does land cost in Washington County, Iowa?

Land in Washington County runs about $9,552 per acre, based on the latest county data.

What is the water situation in Washington County?

Washington County gets about 38" of rain a year, with severe drought in roughly 11.8% of years.

How remote is Washington County?

A representative private-land location has about 31,320 people within a 30-minute drive and 1,560,861 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 Washington compares in Iowa

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