Jefferson County offers building opportunities in Eastern, though some factors need consideration.
📊58/100AcreScore
💰$8KLand $/acre
🏠$300KHome Value
👥30,891Population
📈+10%Growth (10yr)
🌊5%Flood RiskLow
🌡️Cold DryClimateZone 6B
🏗️ Can You Build Here?
Idaho has no state building code — regulations are county-level. Jefferson County has no formal zoning ordinance, meaning most rural land can be used for residential construction including barndominiums without special permits beyond standard building codes.
Zone
Min Lot
Barndo OK?
Unzoned
None
✅ Yes
Jefferson County has no formal zoning ordinance. Standard building permits still required. Contact the county building department for specifics.
📋 What Permits Do You Need?
Most states allow owner-builders to act as their own general contractor for personal residences. Check Idaho requirements — licensed subs are typically needed for electrical, plumbing, and HVAC.
Required Permits
• Building permit (residential)
• Septic permit (if no public sewer)
• Electrical permit
• Plumbing permit
Permit Office
Jefferson County Building Department
Rigby, ID
Contact county clerk for current hours and requirements
🌊 What's the Flood & Soil Risk?
Very low flood risk. Only 5% of Jefferson County land falls within FEMA-designated flood zones — well below the national average.
5%
In Flood Zone
Good
Soil Drainage
Good
Septic Viability
Source: FEMA National Flood Hazard Layer, USDA Web Soil Survey
💰 What Does It Cost?
Affordable land market. At roughly $8,000 per acre, Jefferson County offers good value for builders looking for rural acreage.
$8K
Median $/acre
$300K
Median Home Value
$120–200
Build Cost $/sqft
0.72%
Property Tax Rate
Source: U.S. Census Bureau ACS 2024, Jefferson County Assessor
🏔️ Why People Love Living Here
Jefferson County sits in the heart of Eastern. Idaho Falls is 15 min away. Idaho has a state income tax — factor that into your cost-of-living calculations.
🏗️
Affordable Land
Median land at $8,000/acre means you can buy more, build bigger, and still stay under budget.
🔨
Build Freedom
No formal zoning means you can build your barndominium, shop, or homestead without jumping through bureaucratic hoops.
At a Glance
Population30,891
10-Year Growth+10%
County SeatRigby
State Income TaxYes
ClimateCold Dry (Zone 6B)
How Close Is Everything?
Idaho Falls15 min
IDA20 min
Austinvaries
💧 Utilities & Infrastructure
Most rural Jefferson County land uses well water and septic systems. Municipal utilities are available near Rigby. Check with local utility providers for your specific parcel.
Electric ProviderLocal Co-op / TXU
WaterWell or Municipal
SewerSeptic (most rural)
InternetVaries by location
Cell CoverageVariable
Natural GasPropane common in rural areas
🏦 Financing & Incentives
Jefferson County qualifies for USDA Rural Development loans — zero-down-payment financing for eligible buyers in most areas.
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❓ Frequently Asked Questions
Can I build a barndominium in Jefferson County?
Yes. Jefferson County has no formal zoning ordinance. You'll still need standard building permits, but barndominiums are generally permitted on rural land. Check with the county building department for specific requirements.
How much does land cost in Jefferson County?
Median price is approximately $8,000 per acre, though prices vary by location, road access, and improvements. USDA Rural Development loans may be available for eligible buyers.
Is Jefferson County eligible for USDA Rural Development loans?
Yes — most of Jefferson County qualifies for USDA Rural Development programs, including zero-down-payment home loans for eligible buyers.
What is the property tax rate in Jefferson County?
The effective property tax rate is approximately 0.72%. Check with the county assessor for the most current rates and any available homestead exemptions.
Do I need a licensed contractor to build in Jefferson County?
Most states allow owner-builders to act as their own general contractor for personal residences, though requirements vary by state and county. In Idaho, check local building codes for specific licensing requirements. You'll typically need licensed professionals for electrical, plumbing, and HVAC work.