Seabrook Island Seabrook Island currently has 148 properties for sale listed on MLS. Seabrook Island has an average sq foot of 2,149. All the MLS Listings in Seabrook Island totaling 148, are priced from $28,000 to $2,750,000 with an average median home for sale priced around $616,322. The highest square foot 998 to the lowest at 1,026.
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