Byrnes Downs Charleston SC Homes & Real Estate For Sale MLS Listings Data: Byrnes DownsTotal Listings:2Average Price:$1,007,000Highest Listing Price:$1,299,000Average Days On Market:86Houses For Sale Byrnes Downs subdivision Charleston SC. MLS real estate listings for sale in Byrnes Downs Charleston SC by price, street, age, list date, bedrooms & more Byrnes Downs Charleston SC. Currently, Byrnes Downs in Charleston SC has a total of two listings on the local MLS for sale with an average price point of $1,007,000, the max being $1,299,000 and the lowest priced house $715,000. The neighborhood of Byrnes Downs subdivision in Charleston SC has an average house size of 1,493 sq ft and the average days on the market in this community is 86. 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 Loading...