Verified 2026-05-02
Plumbing permit check for hot water heater work
Chicago's Express Permit Program plumbing instructions list repairing or replacing an existing hot water heater as eligible plumbing work. Chicago's no-permit guidance separately says a permit is not required to repair or replace a hot water heater in-kind in a residential building up to 4 stories above grade or an associated accessory building, so water heater projects should confirm whether the work is in-kind exempt or should use the plumbing permit path.
Official application