Seabrook Island, Charleston County, South Carolina Property Taxes
Median Seabrook Island, SC effective property tax rate: 1.18%, significantly higher than the national median of 1.02%, but lower than the South Carolina state median of 0.72%.
Median Seabrook Island, SC home value: $280,100
Median annual Seabrook Island, SC tax bill: $3,191, $791 higher than the national median property tax bill of $2,400.
How are property taxes in Charleston calculated?
Property taxes in Seabrook Island, SC 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 Seabrook Island’s property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Seabrook Island, knowing local tax details benefits homeowners and investors.
Last Updated March 1, 2025
Seabrook Island, Charleston County, South Carolina Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.18%
Estimate Property Tax Bill
$3,305
$3,067
Property Tax Rates Across Seabrook Island, Charleston County, South Carolina
Local government entities set tax rates, which can vary widely within a state. This is 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.
Seabrook Island in Charleston County, South Carolina, offers a glimpse into how property tax rates can differ significantly from state and national averages. The median property tax rate in South Carolina is 0.57%, significantly lower than the national median of 1.02%. However, Seabrook Island's effective property tax rate is slightly above the state median, showcasing the variability within the state. Homeowners in Seabrook Island may find their tax bills higher than those in other parts of South Carolina but still enjoy lower rates compared to many other states. This disparity highlights the importance of understanding local tax assessments and potential savings through appeals or exemptions. Comparing these rates can provide valuable insights for homeowners looking to manage their property tax expenses effectively.
Property Tax Rates Across Seabrook Island, Charleston County, South Carolina
Source: Ownwell

0.37%
1.09%
1.81%
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 Seabrook Island Tax Rate
1.18%
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 Charleston County Tax Rate
0.53%
Median Effective South Carolina Tax Rate
0.72%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Seabrook Island, Charleston County, South Carolina
Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
29455 | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Seabrook Island, Charleston County, South Carolina
When examining property taxes in Seabrook Island, South Carolina, 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 Charleston County Assessor's Office 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 Charleston County, assessment notices are sent in the spring 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 Seabrook Island.
For example, the median home price in Seabrook Island is $280,100, with tax bills ranging significantly across the county.
Property Tax Assessment Values Across Seabrook Island, Charleston County, South Carolina
Source: Ownwell

$25,350
$890,900
$1,756,450
Median Seabrook Island Market Value
$280,100
Median Charleston County Market Value
$305,700
Median South Carolina Market Value
$140,000
Median United States Market Value
$235,294
Property Tax Assessment Values Across Seabrook Island, Charleston County, South Carolina
Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
29455 | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Seabrook Island, Charleston County, South Carolina
Property Tax Bills Across Seabrook Island, Charleston County, South Carolina
Source: Ownwell

$366
$5,731
$11,095
Median Seabrook Island Tax Bill
$3,191
Median Charleston County Tax Bill
$1,751
Median South Carolina Tax Bill
$1,086
Median United States Tax Bill
$2,400
Property Tax Bills Across Seabrook Island, Charleston County, South Carolina
Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
29455 | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell