Whitney Lake Johns Island SC Homes & Real Estate For Sale MLS Listings Data: Whitney LakeTotal Listings:8Average Price:$536,212Highest Listing Price:$660,000Average Days On Market:51Houses For Sale Whitney Lake subdivision Johns Island SC. MLS real estate listings for sale in Whitney Lake Johns Island SC by price, street, age, list date, bedrooms & more Whitney Lake Johns Island SC. Currently, Whitney Lake in Johns Island SCÂ has a total of eight listings on the local MLS for sale with an average price point of $536,212, the max being $660,000 and the lowest priced house $415,000. The neighborhood of Whitney Lake subdivision in Johns Island SC has an average house size of 2,008 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 Saving Subscribe Unsubscribe Loading...