Grande Dunes – Siena Park Myrtle Beach SC Homes & Real Estate For Sale ALL ACTIVE MLS Listings Grande Dunes - Siena ParkTotal Listings:2Average Price:$787,450Highest Listing Price:$885,000Average Days On Market:51Houses For Sale Grande Dunes - Siena Park subdivision Myrtle Beach SC. MLS real estate listings for sale in Grande Dunes - Siena Park Myrtle Beach SC by price, street, age, list date, bedrooms & more Grande Dunes - Siena Park Myrtle Beach SC. Currently, Grande Dunes - Siena Park in Myrtle Beach SC has a total of two listings on the local MLS for sale with an average price point of $787,450, the max being $885,000 and the lowest priced house $689,900. The neighborhood of Grande Dunes - Siena Park subdivision in Myrtle Beach SC has an average house size of 2,269 sq ft and the average days on the market in this community is 51. 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 Filters Saving Subscribe Unsubscribe Switch to Grid View Switch to Map View Loading...