Short answer
Yes. Columbus Building and Zoning Services lists "Replace a hot water tank" as work that requires a permit but not plan review. Every contractor must hold a City of Columbus license or registration before applying for permits, and plumbing contractors must first hold a current Ohio license. Suburbs such as Hilliard run their own permits.
Key facts
- Columbus Building and Zoning Services lists replacing a hot water tank as a project that requires a permit, but not plan review.[1]
- Columbus requires all contractors to hold the appropriate City license or registration before applying for permits; OCILB trades such as plumbing need a current Ohio license first.[2]
- The Residential Code of Ohio requires approval from a certified building department before anyone installs, alters, repairs or replaces plumbing or other residential building service equipment.[3]
Is a permit required to replace a water heater in Columbus?
Yes. Columbus Building and Zoning Services (BZS) publishes a one-page sheet of typical residential projects. "Replace a hot water tank" is listed under requires a permit, but not plan review[1]. That puts it in the same group as replacing a furnace, a roof or windows.
The state code points the same way. The Residential Code of Ohio says anyone who intends to install, alter, repair or replace plumbing or other residential building service equipment must first get approval from a certified residential building department. Its list of work that needs no approval covers small plumbing items such as fixing leaks and clearing stoppages, and water heater replacement is not on it[3].
| Project | Columbus BZS category[1] |
|---|---|
| Replace a hot water tank | Permit, no plan review |
| Replace a furnace or AC unit | Permit, no plan review |
| Modify or update an electrical box | Permit, no plan review |
| Finish a basement | Permit and plan review |
| Kitchen or bath remodel | Permit and plan review |
Who can pull the permit in Columbus?
Columbus licenses contractors under City Code chapter 4114. The city says all contractors working in Columbus must hold the appropriate license or registration before they apply for permits[2].
For plumbing, the path has two steps[2]:
- The contractor holds a current Ohio license in the trade from the Ohio Construction Industry Licensing Board (OCILB). OCILB licenses plumbing, electrical, HVAC, hydronics and refrigeration contractors[5].
- The contractor then registers with the City as an OCILB contractor.
Columbus also licenses journeyperson plumbers separately. The city's rule reads that no person shall work at the trade as a journeyperson plumber until they have first procured that license[2].
What we could not confirm: whether a Columbus homeowner may pull a permit for their own house. If you plan to do the work yourself, ask BZS first.
How do I apply, schedule inspections or reach the city?
BZS works from 111 N Front Street, Columbus, OH 43215, open Monday to Friday, 9 a.m. to 4 p.m., city holidays excluded[1].
| Need | Contact[1] |
|---|---|
| Customer service and permit intake | 614-645-7433, [email protected] |
| Apply for trade permits, buy and schedule inspections, search licensed contractors | Citizen Access Portal (portal.columbus.gov/permits/) |
| Zoning questions | 614-645-8637, [email protected] |
The Citizen Access Portal is the city's online system. BZS lists applying for building and trade permits, purchasing and scheduling inspections, and searching for licensed and registered contractors among its services[1].
Fee amounts are set in the BZS fee schedule, which the contractor licensing page links[2]. We have not extracted a water heater fee from it, so ask for the permit cost as a separate line on your quote.
Gas, venting and electrical: separate trades
A gas water heater has a gas connection and a vent. An electric one has a dedicated circuit. A heat pump unit may need a different circuit and a condensate drain. Each of those is licensed work. OCILB licenses electrical contractors separately from plumbing contractors[5]. If your new heater needs a new circuit or a gas line change, expect a licensed electrician or a plumber licensed for gas work, and possibly a separate permit.
If you smell gas: leave the house now. Do not use light switches or phones inside. From outside, call your gas utility or 911.
What about the suburbs?
The Columbus permit covers addresses inside the City of Columbus. Suburbs run their own building departments.
- Hilliard: the city's Q&A page answers "Do I need to get a plumbing permit?" with "Yes" and takes permits through its own online portal[4]. Its page does not name water heaters specifically, so confirm with the city.
- Dublin, Westerville, Grove City, Gahanna, Reynoldsburg, Upper Arlington, Delaware and Newark: we have not verified each city's water heater permit rule. The state code requires building department approval for this work[3], so call your city's building department, or ask your plumber which office issues the permit for your address.
What to ask before you hire
- Is your company licensed by OCILB and registered with the City of Columbus (or my suburb)?
- Is the permit in the quote, and who schedules the inspection?
- Does the price include an expansion tank or relief valve discharge piping if the inspector requires it?
- Will you leave me a copy of the permit and the final inspection result?
Keep those papers. A buyer's inspector may ask when the heater was installed and whether it passed inspection.
When to call a pro
- Any water heater replacement inside Columbus: the city requires a permit, and contractors must be licensed or registered before they apply[1][2].
- Switching from tank to tankless, or gas to heat pump, which can change gas sizing, venting or the electrical circuit.
- A relief valve that drips or releases hot water, or any gas smell near the heater.
- An inspection that fails on discharge piping, expansion control or venting.
More questions
Does a like-for-like water heater swap in Columbus need plan review?
No. The city's Typical Residential Projects sheet puts "Replace a hot water tank" in the group that needs a permit but not plan review. Plan review applies to larger jobs such as kitchen or bath remodels and finishing a basement.
Can a Columbus homeowner pull their own water heater permit?
We could not confirm a homeowner permit option on the city pages we read. Call Building and Zoning Services at 614-645-7433 before you plan a DIY install.
Who issues the permit if I live in Hilliard or another suburb?
Your own city, not Columbus. Hilliard, for example, says a plumbing permit is required and takes applications through its own online permit portal. Check your city's building department page.
Sources
- Typical Residential Projects (BA 3/26), City of Columbus, Building and Zoning Services. Accessed 2026-10-14.
- Contractor Licenses, City of Columbus, Building and Zoning Services. Accessed 2026-10-14.
- Ohio Adm.Code 4101:8-1-01, Residential Code of Ohio Chapter 1 (sections 102.10, 103 and 105.1), State of Ohio. Accessed 2026-10-06.
- Questions and Answers (permits and utilities), City of Hilliard. Accessed 2026-10-06.
- Ohio Construction Industry Licensing Board, Ohio Department of Commerce. Accessed 2026-10-06.
Water Heater Facts is an information and referral service run by Strive LeadGen LLC. We may be paid by contractors when we connect a homeowner with one; that never changes what we publish. Found an error? Tell us. We review safety and legal reports within 2 business days and all others within 7 days.