Harbor Island Resort Saint Helena Island SC Homes & Real Estate For Sale MLS Listings Data: Harbor Island Resort Total Listings: 4 Average Price: $518,100 Highest Listing Price: $695,000 Average Days On Market: 120 Houses For Sale Harbor Island Resort subdivision Saint Helena Island SC. MLS real estate listings for sale in Harbor Island Resort Saint Helena Island SC by price, street, age, list date, bedrooms & more Harbor Island Resort Saint Helena Island SC. Currently, Harbor Island Resort in Saint Helena Island SC has a total of four listings on the local MLS for sale with an average price point of $518,100, the max being $695,000 and the lowest priced house $385,000. The neighborhood of Harbor Island Resort subdivision in Saint Helena Island SC has an average house size of 1,429 sq ft and the average days on the market in this community is 120. Relative Sort by Year Built: low to high Sort by Year Built: high to low Sort by price: low to high Sort by price: high to low Sort from oldest to newest Sort from newest to oldest Sort by status: active to under contract Sort by status: under contract to active Saving Subscribe Unsubscribe Loading...