The Warren County Building Department is at 406 Justice Drive, Building Inspection Room 167, Lebanon, OH 45036 (513-695-1290), open Monday to Friday 8:00AM to 5:00PM except holidays. All plan submittals go through the Warren County Customer Portal; plans sent by email are not reviewed, and there are no expedited reviews.
This guide covers the County Building Department, the County Zoning Office and the Health District’s Plumbing Division, and lists which cities and villages issue their own permits according to the county’s contact sheet.
What requires a building permit in Warren County?
Ohio’s building codes are statewide; what changes in Warren County is which office handles the address and what that office asks for on top.
Starting July 1, 2026, Warren County requires plans for inground and above ground pools. A residential retaining wall 4 feet or taller needs a building permit and zoning approval.
Permits in Warren County are governed by Ohio’s statewide codes: the Ohio Building Code for commercial and other nonresidential buildings, and the Residential Code of Ohio for detached one-, two- and three-family dwellings. The Ohio Building, Mechanical and Plumbing Codes in force since 1 March 2024 are based on the 2021 International Codes; the Residential Code of Ohio is the 2019 edition, based on the 2018 International Residential Code; both use the 2023 National Electrical Code. Only departments certified by the Ohio Board of Building Standards may approve plans, and residential rules are uniform statewide. How Ohio’s statewide code works
Short on time to read all of this?
Get a free quote →Who handles permitting in Warren County?
| Places | Issue locally |
|---|---|
| Mason, Middletown, Franklin, Monroe, Loveland, Springboro, Carlisle, Harveysburg | Building and zoning permits |
| Lebanon, South Lebanon, Corwin, Waynesville, Morrow, Pleasant Plain, Maineville, Butlerville | Zoning permits only |
The Warren County Zoning Office handles zoning only for Franklin, Harlan, Turtle Creek, Union and Washington townships; Clearcreek, Deerfield, Hamilton, Massie, Salem and Wayne townships have their own zoning.
The County Zoning Office is at wczoning@warrencountyohio.gov, (513) 695-1294. Lebanon, the county seat, is served by the county: on the Customer Portal applicants pick the City of Lebanon option or the Warren County option depending on location, and City of Lebanon zoning is handled by the city at (513) 228-3171. The county also does plan review and inspections for Clinton County, the City of Wilmington and the City of Franklin, but permits there are applied for through those jurisdictions.
Plumbing: plan review and inspections are done by the Warren County Health District’s Plumbing Division, 416 S. East St., Lebanon (513-695-1228); plumbing permits and registrations are filed through its iWorQ portal.
The Ohio Board of Building Standards certifies which departments may enforce the code, and for which buildings; the certified department’s political subdivision sets fees, and zoning is a separate approval. Where no certified department has jurisdiction, nonresidential plans go to the state, while houses need no plan submission. The Board’s building-department look-up shows which department has authority over an address. Who has authority in Ohio
Not sure this scope needs a permit?
Get a free quote →Plans, reviews and local rules in Warren County
Submitting plans
Submittals and resubmittals go through the Customer Portal as PDF files only (no JPEG, TIFF or PNG), flattened, preferably under 25 MB and no more than 50 MB per upload.
Review times
Plan review takes approximately two (2) weeks for residential and three (3) to four (4) weeks for commercial, in the order applications arrive. You may excavate while waiting but cannot pour concrete until the permit is issued and a footer inspection is made.
Questions
Inspectors take questions by phone (513-695-1290) and email between 7:00 a.m. and 8:00 a.m., Monday through Friday; plan examiners are available by appointment 8:00 a.m. to 2:00 p.m. on Monday, Wednesday, Thursday and Friday.
Pools
Pool zoning applications in Franklin, Harlan, Turtlecreek, Union or Washington Township need a site plan, fence details and safety cover details.
Hamilton Township commercial projects
They must go to Hamilton Township for zoning and fire review before they are submitted to Warren County; projects without that approval are not put in for review.
Other agencies
The building department lists the Warren County Engineer’s Office (105 Markey Rd., Lebanon, 513-695-1364), Warren County Water & Sewer (406 Justice Dr., 513-695-1377) and ODOT District 8 (505 S. St. Rt. 741, Lebanon, 513-932-3030) as agencies to contact before building. A driveway on a street with open ditch drainage needs a culvert permit. No general contractor registration is required by the county.
Rather talk it over?
Call 1-855-478-4290 →Warren County permit costs and fees
Residential fees, plus the 1% state surcharge:
- Processing fee $50.00; building base fee $100.00 plus $3.00 per $1,000 valuation.
- Electric and HVAC each $100.00 base plus $1.00 per 100 sq. ft.
- Solar panels $200.00; car charger $100.00; above ground pools $100.00; inground pools $150.00.
- Extra inspections $50.00; certificate of occupancy $100.00.
Permits dormant for 6 months must be re-applied for and are not refunded.
Fee schedules are revised on each jurisdiction’s own cycle, so ask the issuing department for the schedule in force on your filing date, and ask separately about plan review, trade, re-inspection and revision charges. A Board of Building Standards assessment of 3 percent (nonresidential) or 1 percent (residential) is added to local fees. How Ohio permit fees work
How to get a building permit in Warren County
Per the county’s contact sheet, eight cities and villages issue their own building permits.
From the County Zoning Office, the township, or the city or village; Hamilton Township commercial work needs township zoning and fire review.
On the Warren County Customer Portal, choosing City of Lebanon or Warren County as the location requires.
File with the Health District through iWorQ.
Excavation may start, but no concrete until the permit is issued and the footer inspected.
Rather not deal with the Warren County building department?
Get a free quote →Approved plans become invalid if work has not started within twelve months, with one twelve-month extension available. Before filing, confirm the department has authority over the address for the work, whether the Ohio Building Code or the Residential Code of Ohio governs, and which approvals must be in hand first. Review and corrections in Ohio
Inspections in Warren County
Inspections are requested with twenty-four (24) hours notice once the work is completely ready. Plumbing inspections are done by the Health District’s Plumbing Division.
No building may be occupied until a certificate of occupancy or completion is issued, and a change of occupancy needs approved construction documents even without other work. Address correction notices before requesting a re-inspection, and do not cover work before it has been inspected and approved. Inspections and occupancy in Ohio
Official Warren County permitting resources
These are the primary sources behind this guide. Codes, fee schedules and procedures change — confirm the position for your filing date.
Want this handled start to finish?
Get a free quote →- Warren County Building Department
- Online submittal instructions
- Township, village and city contacts
- Residential fees
- Permit FAQ
- Warren County Health District plumbing
Frequently asked questions
Who does plumbing inspections in Warren County?
The Warren County Health District’s Plumbing Division, 513-695-1228; permits are filed through its iWorQ portal.
Do I need plans for a pool in Warren County?
Yes, starting July 1, 2026, for inground and above ground pools.
How long does Warren County plan review take?
About two (2) weeks for residential and three (3) to four (4) weeks for commercial; there are no expedited reviews.
Inspections are where schedules slip.
Get a free quote →Simplify Warren County permitting with Alliance Permitting
- Confirm which certified building department, health district and zoning office have the address
- Prepare the building application and plans, plus the zoning, drainage and plumbing filings that go with them
- Submit through the right portal or inbox and track plan review, inspections and the certificate of occupancy
Alliance Permitting is a permit documentation and submission company in Ohio. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.
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More Ohio permitting guides
This guide is provided by Alliance Permitting for general information about Warren County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.