Williamson County in Central Texas — urban density and zoning complexity lower the buildability score, but opportunities exist in outlying areas.
📊40/100AcreScore
💰$75KLand $/acre
🏠$395KHome Value
👥643,785Population
📈+40.5%Growth (10yr)
🌊12%Flood RiskLow
🌡️Hot Humid SubtropicalClimateZone 2A
🏗️ Can You Build Here?
Williamson 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
Williamson County has local zoning. Contact the county building department for specific regulations.
📋 What Permits Do You Need?
Tennessee allows owner-builders to act as their own general contractor for personal residences. Licensed subs needed for electrical, plumbing, and HVAC.
Required Permits
• Building permit (residential)
• Septic permit (if no public sewer)
• Electrical permit
• Plumbing permit
Permit Office
Williamson County Building Department
Georgetown, TX
Contact county clerk for current hours and requirements
🌊 What's the Flood & Soil Risk?
Moderate flood risk. 12% of county land is in FEMA flood zones. Most buildable parcels are outside hazard areas, but always verify your specific site.
12%
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 $75,000 per acre reflect Williamson County's demand — proximity to Austin and growth pressure drive prices.
$75K
Median $/acre
$395K
Median Home Value
$120–200
Build Cost $/sqft
2.22%
Property Tax Rate
Source: U.S. Census Bureau ACS 2024, Williamson County Assessor
🏔️ Why People Love Living Here
Williamson County sits in the heart of Central Texas. Austin is 25 min away. No state income tax means your dollar stretches further here than in most states.
💰
No State Income Tax
Texas has no state income tax. Combined with typical property taxes at 2.22%, your money works harder here.
📈
Fast Growing
40.5% growth over 10 years — people are moving here and property values reflect it.
🏠
Established Community
Zoning provides predictability — you know what your neighbors can and can't build. Good for long-term property value.
At a Glance
Population643,785
10-Year Growth+40.5%
County SeatGeorgetown
State Income TaxNone
ClimateHot Humid Subtropical (Zone 2A)
How Close Is Everything?
Austinvaries
AUS30 min
💧 Utilities & Infrastructure
Most rural Williamson County land uses well water and septic systems. Municipal utilities are available near Georgetown. 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 Williamson 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 Williamson County?
Check with the Williamson 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 Williamson County?
Median price is approximately $75,000 per acre, though prices vary by location, road access, and improvements.
Is Williamson County eligible for USDA Rural Development loans?
Most of Williamson 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 Williamson County?
The effective property tax rate is approximately 2.22%. Texas has no state income tax, but property tax rates may be higher than the national average. Check with the county assessor for the most current rates and any available homestead exemptions.
Do I need a licensed contractor to build in Williamson County?
Most states allow owner-builders to act as their own general contractor for personal residences, though requirements vary by state and county. In Texas, check local building codes for specific licensing requirements. You'll typically need licensed professionals for electrical, plumbing, and HVAC work.