Choosing where to build a custom home on Amelia Island is one of the most consequential decisions an affluent buyer will make. The island offers genuine variety: deep-water Intracoastal frontage, oceanfront resort communities, golf-and-nature estates, and walkable historic neighborhoods. Each category attracts a different buyer, carries different design restrictions, and demands a different build strategy. This guide ranks the top neighborhoods by buyer type, with clear tradeoffs on pricing, custom-build fit, water access, and lock-and-leave practicality.