Is a rental unit in Johns Island worth the purchase premium?

A rental unit's added cost on Johns Island is worth paying when the extra income and long-term appreciation outweigh the higher purchase price, insurance and upkeep of running a second unit. Johns Island's mix of rural acreage and newer subdivisions means rental demand and HOA restrictions vary block by block, so the math has to be run on the specific property, not the town as a whole. Brian Beatty runs that comparison against comparable rented and non-rented Johns Island sales before a buyer commits.