Iowa

By Mario Bailey · Last checked 23 Oct 2026

Des Moines, the one Iowa jurisdiction with a verified water heater permit rule so far, requires a water heater permit for every job.

Always required

1

of 1 jurisdiction

Conditional

0

depends on size or scope

Not required

0

exempt outright

Water Heater Permit rules nationwide, beyond Iowa.

Requirements and size thresholds for water heater permits vary by locality. The table below compares what each Iowa county or city requires. Always confirm with the local office before starting.

Comparing states? See water heater permit rules across every locality we cover.

The application steps and inspection sequence for water heater permits come from the model code rather than from Iowa law, so they read the same wherever you build. We keep that walkthrough in one place: how a water heater permit application and its inspections work, start to finish. What changes between Iowa jurisdictions is below: who requires a permit, what they charge, and which office you file with.