4 bedroom homes for sale in Harbor Island, SC

4 days on Rocket

$975,000

4 beds • 2 baths • 1,600 sqft

104 Harbor Dr N, Harbor Island, SC 29920

#191397, Listing office: The HomesFinder Realty Group

$789,000

4 beds • 3 baths • 1,872 sqft

108 Harbor Dr N, Harbor Island, SC 29920

#190610, Listing office: Keller Williams Realty

Room to negotiate?

Median List Price

$435K

Avg. Sale Time

235 Days

Based on our June 2025 Market Report.

$1,399,000

4 beds • 3 baths • 2,780 sqft

2 Ebb Tide Ct, Harbor Island, SC 29920

#190525, Listing office: Weichert Realtors Coastal PR

$1,400,000

4 beds • 3.5 baths • 2,970 sqft

1 Scallop Ct, Harbor Island, SC 29920

#189440, Listing office: Palmetto Moon Realty, LLC

$1,949,900

4 beds • 3.5 baths • 2,598 sqft

120 Harbor Dr N, Harbor Island, SC 29920

#189196, Listing office: Greco Group Brokered by eXp

$1,155,000

4 beds • 5 baths • 3,370 sqft

45 Ocean Marsh Ln, Harbor Island, SC 29920

#188671, Listing office: Coldwell Banker Realty

$1,155,000

4 beds • 5 baths • 3,370 sqft

45 Ocean Marsh Ln, Saint Helena Island, SC 29920

#25002380, Listing office: Coldwell Banker Realty

$1,150,000

4 beds • 3.5 baths • 2,700 sqft

18 Sand Dollar Ct, Harbor Island, SC 29920

#188502, Listing office: Palmetto Moon Realty, LLC

$969,000

4 beds • 3 baths • 2,254 sqft

11 Windjammer Ln, Harbor Island, SC 29920

#184414, Listing office: BHHS Bay Street Realty

$799,000

4 beds • 2 baths • 2,122 sqft

9 Ebb Tide Ct, Harbor Island, SC 29920

#188518, Listing office: Tideland Realty Inc

Harbor Island, SC Real Estate Market Overview

There are 10 4-bedroom homes for sale in Harbor Island, SC. The following market insights reflect all property types in the Harbor Island, SC real estate market. Between May 2025 and June 2025, Harbor Island, SC real estate market has seen a decrease in the number of listings by 4.2%. In June 2025 median list price was $435,000 and the average listing age was 235 days.

From Rocket Homes Real Estate and based on county public records data

What is it like to live in Harbor Island, SC

Overview

Harbor Island is located in Saint Helena Island, South Carolina. There are roughly 18 residents, living in 10 households. The average temperature for Harbor Island this time of the year is low of 73F and high of 89F. On average, Harbor Island gets about 5.72 inches of precipitation in July. Most residents are home owners (95%), have a post secondary degree (59%) and are married, no kids (69%).

Data provided by Home Junction

4 bedroom homes for sale in Harbor Island, SC

Harbor Island, SC Real Estate Market Overview

What is it like to live in Harbor Island, SC

Overview

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