Harbor Island, SC Real Estate Listings & Homes for Sale

New On Site Today

$870,000

1 of 69

Beachwalk | Harbor Island

4 beds

2 baths

2,122 sqft

On Site: Today

MLS ID#: 188518
© 2025 Lowcountry Regional MLS. Listing courtesy of Jami Pizzo-Rankin of Tideland Realty Inc.

New On Site Today

$74,900

1 of 11

Harbour Key | St. Helena Island

0.1 acres

On Site: Today

MLS ID#: 188510
© 2025 Lowcountry Regional MLS. Listing courtesy of Susan Schiavon of RE/MAX Island Realty Inc..

New On Site 1 Day Ago

$1,150,000

1 of 58

Beachwalk | Harbor Island

4 beds

3 baths

1 ½ baths

2,700 sqft

On Site: 1 Day

MLS ID#: 188502
© 2025 Lowcountry Regional MLS. Listing courtesy of Mary Ann Weir of Palmetto Moon Realty, LLC.

New On Site 6 Days Ago

$355,000

1 of 36

Cedar Reef Vill | St. Helena Island

1 beds

1 baths

1 ½ baths

806 sqft

On Site: 6 Days

MLS ID#: 188419
© 2025 Lowcountry Regional MLS. Listing courtesy of Susan Schiavon of RE/MAX Island Realty Inc..

$375,000

1 of 39

Cedar Reef Vill | Harbor Island

2 beds

2 baths

1 ½ baths

1,080 sqft

On Site: 9 Days

MLS ID#: 188394
© 2025 Lowcountry Regional MLS. Listing courtesy of Gregory Bennett of Beaufort Realty Consultants.

$49,900

1 of 44

Ocean Marsh | Harbor Island

0.29 acres

On Site: 11 Days

MLS ID#: 188352
© 2025 Lowcountry Regional MLS. Listing courtesy of Amada Slade of BHHS Bay Street Realty.

$435,000

1 of 27

Ocean V. M Bldg | St. Helena Island

2 beds

2 baths

1,150 sqft

On Site: 12 Days

$75,000

1 of 8

Ocean Marsh | St. Helena Island

0.29 acres

On Site: 32 Days

$599,000

1 of 19

Harbour Key | St. Helena Island

4 beds

3 baths

1,772 sqft

On Site: 33 Days

Price Reduced

$639,500

1 of 40

Ocean Marsh | Harbor Island

3 beds

2 baths

1,364 sqft

On Site: 54 Days

42 Harbor Island Real Estate Listings