County versus municipal jurisdiction
Miami-Dade explains that its online process applies to unincorporated properties with folios beginning in 30, while each municipality has its own Building Official. A Miami property may therefore need City rather than County processing.
Sanitary-line replacement requirements
The County plumbing-permit page lists a building permit application, plumbing fee sheet, slab-cut repair detail and a special-inspector form for certain sanitary-line replacement work. The exact requirements should be checked against the current scope.
Cleaning and inspection are different from alteration
A camera inspection or clearing a stoppage is not the same as replacing or altering concealed pipe. Once work changes regulated plumbing, permit and inspection requirements can change.
Ask before signing
The proposal should state who obtains the permit, which authority has jurisdiction, what inspections are expected and whether fees or special inspection are included.
Association and property approvals are separate
A government permit does not replace condominium, landlord, property-management or utility approval. These may operate on separate schedules.
Use current official guidance
Rules and forms change. Confirm the current requirement with the applicable Building Department rather than relying on a blog post or an old contractor assumption.