St. Louis City County in St. Louis Metro — urban density and zoning complexity lower the buildability score, but opportunities exist in outlying areas.
📊38/100AcreScore
💰$35KLand $/acre
🏠$175KHome Value
👥293,000Population
📈+-5.5%Growth (10yr)
🌊8%Flood RiskLow
🌡️Mixed HumidClimateZone 4A
🏗️ Can You Build Here?
St. Louis City County has local zoning regulations. Check with the county building department for specific rules on your parcel. Barndominiums may require conditional use permits in some zones.
Zone
Min Lot
Barndo OK?
Residential
Varies
⚠️ Conditional
Agricultural
None
✅ Yes
Commercial
Varies
❌ No
St. Louis City County has local zoning. Contact the county building department for specific regulations.
📋 What Permits Do You Need?
Most states allow owner-builders to act as their own general contractor for personal residences. Check Missouri 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
St. Louis City County Building Department
St. Louis, MO
Contact county clerk for current hours and requirements
🌊 What's the Flood & Soil Risk?
Moderate flood risk. 8% of county land is in FEMA flood zones. Most buildable parcels are outside hazard areas, but always verify your specific site.
8%
In Flood Zone
Good
Soil Drainage
Varies
Septic Viability
Source: FEMA National Flood Hazard Layer, USDA Web Soil Survey
💰 What Does It Cost?
Higher land costs at roughly $35,000 per acre reflect St. Louis City County's demand — proximity to St. Louis and growth pressure drive prices.
$35K
Median $/acre
$175K
Median Home Value
$120–200
Build Cost $/sqft
1.2%
Property Tax Rate
Source: U.S. Census Bureau ACS 2024, St. Louis City County Assessor
🏔️ Why People Love Living Here
St. Louis City County sits in the heart of St. Louis Metro. St. Louis is 0 min away. Missouri has a state income tax — factor that into your cost-of-living calculations.
📈
Steady Community
A stable community with affordable growth — less speculation, more authentic rural living.
🏠
Established Community
Zoning provides predictability — you know what your neighbors can and can't build. Good for long-term property value.
At a Glance
Population293,000
10-Year Growth-5.5%
County SeatSt. Louis
State Income TaxYes
ClimateMixed Humid (Zone 4A)
How Close Is Everything?
St. Louis0 min
STL15 min
Austinvaries
💧 Utilities & Infrastructure
Most rural St. Louis City County land uses well water and septic systems. Municipal utilities are available near St. Louis. Check with local utility providers for your specific parcel.
Electric ProviderLocal Co-op / TXU
WaterWell or Municipal
SewerSeptic (most rural)
InternetVaries by location
Cell CoverageGood
Natural GasPropane common in rural areas
🏦 Financing & Incentives
USDA Rural Development loans are generally not available in St. Louis City County due to urban classification. FHA, VA, and conventional financing options are available.
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❓ Frequently Asked Questions
Can I build a barndominium in St. Louis City County?
Check with the St. Louis City County Building Department for specific zoning rules on your parcel. Some zones allow barndominiums outright, others may require conditional use permits.
How much does land cost in St. Louis City County?
Median price is approximately $35,000 per acre, though prices vary by location, road access, and improvements.
Is St. Louis City County eligible for USDA Rural Development loans?
Most of St. Louis City County is not eligible for USDA Rural Development due to its urban/suburban classification. Check the USDA eligibility map for specific addresses.
What is the property tax rate in St. Louis City County?
The effective property tax rate is approximately 1.2%. Check with the county assessor for the most current rates and any available homestead exemptions.
Do I need a licensed contractor to build in St. Louis City County?
Most states allow owner-builders to act as their own general contractor for personal residences, though requirements vary by state and county. In Missouri, check local building codes for specific licensing requirements. You'll typically need licensed professionals for electrical, plumbing, and HVAC work.