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Castell, Llano County, Texas Property Taxes

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Property Taxes in Castell, Texas

  • Median Castell, Texas effective property tax rate: 1.01%, significantly lower than the national median of 1.02%, and lower than the Texas state median of 1.48%.

  • Median Castell, Texas home value: $158,740

  • Median annual Castell, Texas tax bill: $1,348, lower than the national median property tax bill of $2,400.

How are property taxes in Llano calculated?

Property taxes in Castell, Texas are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.

Understanding Castell's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Castell, knowing local tax details benefits homeowners and investors.

Last Updated April 13, 2026

Castell, Llano County, Texas Property Tax Bill Calculator

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

1.01%

Estimate Property Tax Bill

$1,603

$1,488

SAVE WITH OWNWELL

$774

Average Annual Tax Savings

How Does the Castell Property Tax Calculator Work?

Use this Castell property tax calculator to estimate your annual tax bill. Enter your property's assessed value and our calculator applies Castell's median effective tax rate of 1.01% — based on actual property records in Llano County — to generate your estimate.

Enter your property's estimated assessed value — the figure the local appraisal district uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Castell's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.

Your bill may vary by ZIP code within Castell: rates range from 1.01% in 76831 to 1.01% in 76831, primarily due to differences in school district levies and local assessment districts.

If your estimate is higher than expected, Ownwell can appeal your Castell assessment — you only pay if we save you money.

About Castell Property Taxes

About Property Taxes in Castell, Llano, Texas

Castell’s median effective property tax rate of 1.01% is lower than the Llano County base levy and higher than the Texas state median of 1.48%, but lower than the national median of 1.02%. This rate reflects the Llano County base levy combined with local school district levies and Municipal Utility Districts that can vary by subdivision throughout the city.

Property tax rates are not uniform across Castell. Homeowners in the 76831 ZIP code carry a median effective rate of 1.01%, while those in the same ZIP also pay 1.01%. This reflects how school district boundaries and local assessment districts are drawn across Llano County. Understanding where you live in Castell can still help you better evaluate your annual tax bill.

Castell homeowners who believe their assessed value is too high can file a formal appeal with the local Appraisal District before the May 15, 2026 deadline each year.

If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.

Property Tax Rates Across Castell, Llano County, Texas

As noted earlier, local government entities set tax rates, which can vary widely within a state.

Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.

While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.

Below, you can compare Castell's effective property tax rate to other cities in Texas and the median property tax rates in Texas and the U.S.

Property Tax Rates Across Castell, Llano County, Texas

Source: Ownwell

0.96%

1.14%

1.32%

Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.

Median Effective Castell Tax Rate

1.01%

Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.

Median Effective Llano County Tax Rate

1.12%

Median Effective Texas Tax Rate

1.48%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Castell, Llano County, Texas

Zip10th Percentile25th PercentileMedian Tax Rate75th Percentile90th Percentile
768310.72%0.94%1.01%1.03%1.03%

Source: Ownwell

Property Tax Assessment Values Across Castell, Llano County, Texas

When examining property taxes in Castell, Texas, understanding the distinction between market value and assessed value is crucial.

The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Llano County appraisal district estimates the market value for tax purposes.

The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.

Assessment notices:

In Llano County, assessment notices are sent in April each year. They'll typically reach your mailbox by the middle of April.

Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Castell.

For example, the median home price in Castell is $158,740, with tax bills ranging significantly across the county. 76831 has the highest median home price at $158,740.

Property Tax Assessment Values Across Castell, Llano County, Texas

Source: Ownwell

$158,740

$400,053

$641,365

Median Castell Market Value

$158,740

Median Llano County Market Value

$285,725

Median Texas Market Value

$258,851

Median United States Market Value

$235,294

Property Tax Assessment Values Across Castell, Llano County, Texas

Zip10th Percentile25th PercentileMedian Home Price75th Percentile90th Percentile
76831$85,744$124,590$158,740$316,560$451,290

Source: Ownwell

Property Tax Bills Across Castell, Llano County, Texas

Property tax bills in Castell are based on the assessed value of a home and the local tax rate set for Llano County. When a home’s market value changes, the assessed value can change too, which may raise or lower the bill. For a home with a median price of $158,740, the property tax bill can vary widely depending on exemptions, local taxing entities, and how the property is assessed.

Homeowners in Castell often see bills that fall between $1,042 and $2,741, with the highest median tax bill at $1,348 in ZIP code 76831. That means two homes with similar market values can still have different tax bills if their assessments or exemptions differ. Compared with the national median property tax bill of $2,400, Castell homeowners may pay less or more depending on their specific property.

Ownwell helps homeowners save by reviewing assessments, identifying savings opportunities, and filing property tax appeals and exemptions to help reduce what they owe.

Property Tax Bills Across Castell, Llano County, Texas

Source: Ownwell

$1,348

$4,686

$8,023

Median Castell Tax Bill

$1,348

Median Llano County Tax Bill

$3,130

Median Texas Tax Bill

$3,441

Median United States Tax Bill

$2,400

Property Tax Bills Across Castell, Llano County, Texas

Zip10th Percentile25th PercentileMedian Tax Bill75th Percentile90th Percentile
76831$689$1,042$1,348$2,741$4,060

Source: Ownwell

Don't miss the deadline to protest!

Frequently Asked Property Tax Questions in Castell, Texas

How are property taxes calculated in Castell, Texas?
Property taxes in Castell, Texas are calculated by multiplying your property's assessed value by the applicable tax rate set by local taxing authorities. The assessed value is determined by the county assessor and may differ from your property's market value depending on local assessment ratios and exemptions.
How do I appeal my property taxes in Castell, Texas?
To appeal your property taxes in Castell, Texas, you typically need to file a formal protest or appeal with your local appraisal district or assessor's office by the stated deadline. You'll need evidence such as comparable sales, a recent independent appraisal, or documentation of property condition issues. Ownwell can handle this entire process for you.
What property tax exemptions are available in Castell, Texas?
Common property tax exemptions in Castell, Texas include homestead exemptions for primary residences, senior citizen exemptions, veteran exemptions, and disability exemptions. Exemption amounts and eligibility requirements vary by county. Contact your local appraisal district or check Ownwell for details specific to your property.
When are property taxes due in Castell, Texas?
Property tax deadlines in Castell, Texas vary by county but typically include an assessment notice period in spring or early summer, followed by an appeal deadline, and a tax payment due date in the fall or winter. Check with your county assessor's office for specific dates in your area.
How can Ownwell help reduce my property taxes in Castell, Texas?
Ownwell provides professional property tax appeal services in Castell, Texas. Our team analyzes your assessment, gathers evidence, files all paperwork, and represents you at hearings — all with no upfront cost. You only pay a percentage of your savings if we successfully lower your tax bill.