Byrnes Downs Charleston SC Homes & Real Estate For Sale MLS Listings Data: Byrnes DownsTotal Listings:3Average Price:$786,333Highest Listing Price:$1,375,000Average Days On Market:25Houses 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 SCÂ has a total of three listings on the local MLS for sale with an average price point of $786,333, the max being $1,375,000 and the lowest priced house $485,000. The neighborhood of Byrnes Downs subdivision in Charleston SC has an average house size of 1,030 sq ft and the average days on the market in this community is 25. 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...