Codes & permits
Plumbing permits in Oak Park
Oak Park requires permits for most plumbing changes and registration for contractors, and ties its sewer backup grant to permitted work.
Calls are answered by a referral service that connects you with a local plumbing provider. How this works
Most changes to home plumbing systems — including drain tile and sump pump installations — require permits from the Village’s Permits Processing Division; the Village advises consulting it before starting work.
The Village processes construction permits and contractor registration online, and contractors must register with the Village to work in Oak Park.
Source: Village of Oak Park — Sewer Backup Protection Grant (2024 application packet)
The Village’s 2025 construction fee update lists a flood control / sewer backup control item for interior overhead modifications, and a residential deposit per permit.
Source: Village of Oak Park — 2025 construction fee update (PDF)
Sewer Backup Protection Grant
Grant-funded overhead sewer and backflow valve work must follow Village permit procedures. Oak Park sewer backup protection
What we could not confirm
- 2026 fee amounts (the 2026 schedule is published; not reviewed in full).
- The exact list of plumbing work exempt from permits.
Check with the official source before relying on these points.
Frequently asked questions
Do I need a permit to replace a sump pump in Oak Park?
The Village says sump pump installations need permits; ask the Village whether a like-for-like replacement is treated the same way.
Do plumbers have to register with the Village?
The Village states contractors must register to do work in Oak Park.
Sources
- Village of Oak Park — Basement Flooding Prevention Official / primary
- Village of Oak Park — Sewer Backup Protection Grant (2024 application packet) Official / primary
- Village of Oak Park — 2025 construction fee update (PDF) Official / primary
- Village of Oak Park — 2026 construction fees (PDF) Official / primary
Information can change; official sources control.