Sea Island Hamlet Mount Pleasant SC Homes & Real Estate For Sale MLS Listings Data: Sea Island HamletTotal Listings:2Average Price:$909,500Highest Listing Price:$924,000Average Days On Market:58Houses For Sale Sea Island Hamlet subdivision Mount Pleasant SC. MLS real estate listings for sale in Sea Island Hamlet Mount Pleasant SC by price, street, age, list date, bedrooms & more Sea Island Hamlet Mount Pleasant SC. Currently, Sea Island Hamlet in Mount Pleasant SCÂ has a total of two listings on the local MLS for sale with an average price point of $909,500, the max being $924,000 and the lowest priced house $895,000. The neighborhood of Sea Island Hamlet subdivision in Mount Pleasant SC has an average house size of 1,994 sq ft and the average days on the market in this community is 58. RelativeSort by Year Built: low to highSort by Year Built: high to lowSort by price: low to highSort by price: high to lowSort from oldest to newestSort from newest to oldestSort by status: active to under contractSort by status: under contract to active Saving Subscribe Unsubscribe Loading...