Plumbing regulated by elevation since 1977
Post-1975 construction on Sullivan's Island requires regulated flood elevation and mandatory flood insurance, and the Town has kept elevation certificates for new or substantially improved structures since 1977 — rules that shape where water heaters and fixtures can go.
What elevation rules mean for plumbing
Water heater and fixture placement on Sullivan's Island often has to respect the same elevation requirements that govern the structure itself, which is different from a standard inland plumbing job and worth flagging early.
Plumbing options for Sullivan's Island homes
What to describe
Tell us whether the home has a current elevation certificate, its approximate build or rebuild year, and the plumbing work you need.
Confirm with the Town
Sullivan's Island's elevation-certificate program and 2024 stormwater-improvement planning both affect how plumbing systems are sited; confirm current requirements before starting work.