Condo For Sale Seaside Inn Isle of Palms SC. MLS real estate condominium listings for sale in Seaside Inn Isle of Palms SC by list date, number of bedrooms, baths, & floor. Currently, Seaside Inn condos in Isle of Palms SC have a total of one listings on the local MLS for sale in the community with an average price point of $$259,000, the max being $