John Gee and Company and Sanibel Island real estate and Captiva Island real estate website. Sanibel and Captiva Island homes and condos are in high demand because the islands are two of the most intimate and well-preserved in Florida. The limited supply of Sanibel Island homes and condos creates even more demand for this island community. Sanibel is also incredibly special as over 60% of the island is conservation property, including the world renown Ding Darling Wildlife Refuge. Not to mention Sanibel being considered one of the best shelling locations in the Western hemisphere.