Do you need a permit to replace a water heater in Chicago?
It depends on the project. Chicago exempts some water heaters from a building permit and requires one for the rest1.
On this page
Depends on size or scope
Chicago's rule“Repairing or replacing (in-kind) a hot water heater…”1
City of Chicago, Department of Buildings, Plumbing Work
Which permits you need
| Permit | Required when | The city’s wording |
|---|---|---|
| Plumbing permit | Water heater repair/replacement not covered by the exemption: Express Permit (Plumbing Work) | Repairing or replacing an existing hot water heater…2 |
Limits and conditions in Chicago's rule
Each limit sits next to the sentence it comes from; the conditions in that sentence are part of the rule.
| Rule | Value | The city’s wording |
|---|---|---|
| Like-for-like replacement exempt? | Yes | Repairing or replacing (in-kind) a hot water heater…1 |
What to submit
- Existing-condition photo and energy/water efficiency compliance form (Express plumbing)2
Who can apply
- Licensed plumbing contractor2
- Owner/occupant/lessee of detached single-family home may personally do the work3
Who to ask
City of Chicago Department of Buildings4
Building permits
- Website
- chicago.gov4
- Apply online
- ipi.cityofchicago.org5
- Phone
- (312) 744-34494
- [email protected]6
- Address
- 121 N. LaSalle St., Room 900, Chicago, IL 606024
- Hours
- Mon-Fri 8:30 a.m.-4:30 p.m. (9th floor front desk, City Hall; no walk-in permit processing)7
- Inspections
- Online only: webapps1.cityofchicago.org8
Water heater permit rules in other cities
Rules differ from city to city. Compare Chicago with 18 other cities on the national water heater permit guide, or go straight to one:
- New York City, NY
- Los Angeles, CA
- Phoenix, AZ
- San Antonio, TX
- San Diego, CA
- Dallas, TX
- Jacksonville, FL
- Fort Worth, TX
- San Jose, CA
- Charlotte, NC
- Columbus, OH
- Indianapolis, IN
- San Francisco, CA
- Seattle, WA
- Denver, CO
- Oklahoma City, OK
- Philadelphia, PA
- Austin, TX
Sources
- What Types of Work Do Not Require a Building Permit? (Full List)City of Chicago, Department of BuildingsChecked November 7, 2026
- Express Permit Program: Plumbing WorkCity of Chicago, Department of BuildingsChecked November 7, 2026
- Does my project require a licensed plumbing contractor?City of Chicago, Department of BuildingsChecked November 7, 2026
- Department of Buildings (home page)City of Chicago, Department of BuildingsChecked November 7, 2026
- Express Permit ProgramCity of Chicago, Department of BuildingsChecked November 7, 2026
- Calculate the Cost of a Building PermitCity of Chicago, Department of BuildingsChecked November 7, 2026
- Current Operations: Frequently Asked QuestionsCity of Chicago, Department of BuildingsPosted September 29, 2026Checked November 7, 2026
- Permit-Related Building InspectionsCity of Chicago, Department of BuildingsChecked November 7, 2026