Shellring at St Thomas Island Charleston SC Homes & Real Estate For Sale MLS Listings Data: Shellring at St Thomas IslandTotal Listings:1Average Price:$1,024,900Highest Listing Price:$1,024,900Average Days On Market:57Houses For Sale Shellring at St Thomas Island subdivision Charleston SC. MLS real estate listings for sale in Shellring at St Thomas Island Charleston SC by price, street, age, list date, bedrooms & more Shellring at St Thomas Island Charleston SC. Currently, Shellring at St Thomas Island in Charleston SCÂ has a total of one listings on the local MLS for sale with an average price point of $1,024,900, the max being $1,024,900 and the lowest priced house $1,024,900. The neighborhood of Shellring at St Thomas Island subdivision in Charleston SC has an average house size of 2,752 sq ft and the average days on the market in this community is 57. 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...