Condo For Sale Cannonborough-Elliotborough Charleston SC. MLS real estate condominium listings for sale in Cannonborough-Elliotborough Charleston SC by list date, number of bedrooms, baths, & floor. Currently, Cannonborough-Elliotborough condos in Charleston SC have a total of nineteen listings on the local MLS for sale in the community with an average price point of $$1,857,563, the max being $