Ohio Owner-Builder Permit Guide
By a retired general contractor with 15+ years building custom homes — about the author. Last updated: May 2026.
Yes. Ohio has no statewide general contractor license for residential work, so you can act as your own general contractor on a home you own and occupy — residential building permits and the Residential Code of Ohio (the 2019 RCO, based on the 2018 IRC) are enforced by your local building department. The state licenses only the commercial specialty trades through the Ohio Construction Industry Licensing Board (OCILB) — electrical, plumbing, HVAC, hydronics, and refrigeration — but most Ohio jurisdictions let a homeowner pull a permit and do their own electrical or plumbing on their own primary residence (inspected to the same code as a pro's). Confirm permit and trade rules with your specific city or county building department.
| Requirement | Owner-builder in Ohio |
|---|---|
| State GC license to build your own home | Not required — Ohio has no statewide residential general contractor license |
| Who enforces residential permits/code | Local certified building department; 1-2-3 family homes follow the 2019 Residential Code of Ohio (2018 IRC base) |
| Can a homeowner pull their own permit | Yes in most jurisdictions for an owner-occupied primary residence (proof of ownership / affidavit typical) |
| DIY electrical & plumbing | Allowed in many jurisdictions on your own home if you pull the permit yourself and pass inspection — verify locally |
| Licensed trades (if you hire out) | Commercial electrical, plumbing, HVAC, hydronics, refrigeration contractors are OCILB-licensed; residential contractor registration is local |
| Current code editions | 2019 RCO (2018 IRC) for homes; 2024 OBC/OMC/OPC (2021 I-Codes) for non-residential; 2018 IECC energy provisions |
Ohio is one of the most overlooked owner-builder states in the country. With no statewide general contractor license requirement, a clear residential code, and reasonable permit costs across most of the state, Ohio is a quiet sweet spot for owner-builders — especially in suburban and rural counties.
The Residential Code of Ohio (RCO) is enforced by certified local building departments. Where no certified department exists, the Ohio Board of Building Standards (BBS) is the default authority for non-residential, but residential work in those areas may have very limited enforcement.
Ohio Building Code Overview
Ohio operates under a statewide code with delegated local enforcement model. The state writes the code; local jurisdictions enforce it if they've established a certified Residential Building Department (RBD).
Current Code Adoption
| Code | Basis & effective date | Applies to |
|---|---|---|
| 2019 Residential Code of Ohio (RCO) | 2018 International Residential Code with Ohio amendments; effective July 1, 2019; still current as of 2026 | One- to three-family dwellings |
| 2024 Ohio Building Code (OBC) | 2021 IBC; effective March 1, 2024 | Non-residential only |
| 2024 Ohio Mechanical Code (OMC) & 2024 Ohio Plumbing Code (OPC) | 2021 I-Codes | Non-residential (1-3 family dwellings use the RCO's own mechanical and plumbing provisions) |
| Energy provisions: 2018 IECC | As referenced by the 2019 RCO | Residential energy |
| Electrical: 2017 NEC | Referenced by the 2019 RCO; a 2024 RCO amendment package updated residential electrical provisions, and some departments now reference a newer NEC edition | Confirm exact NEC edition with your building department before wiring |
The Board of Building Standards updates Ohio's codes on a multi-year cycle, but the residential code has lagged the commercial codes — the RCO is still on the 2018 IRC while the commercial OBC moved to the 2021 I-Codes in 2024.
Local Enforcement Patchwork
Not every Ohio jurisdiction enforces the RCO directly. Each county or city must establish a certified Residential Building Department (RBD) to gain authority. Some smaller counties have no RBD at all — in those areas, residential construction operates with minimal oversight (similar to no-code Texas rural counties).
| Jurisdiction type | Enforcement |
|---|---|
| Major metros (Columbus, Cleveland, Cincinnati, Dayton, Toledo, Akron) | Full RBD enforcement |
| Suburban counties (Delaware, Franklin, Hamilton, Cuyahoga) | Full RBD enforcement |
| Many rural counties | Either rely on township/village officials with limited authority, or have no formal enforcement for one- and two-family dwellings |
Always confirm enforcement status with your local jurisdiction before assuming your build is unregulated.
Ohio-Specific Amendments
The RCO modifies the base IRC in several areas:
- Frost depth: 32 inches (most of Ohio) to 42 inches (northeast Ohio lake-effect zones) — verify with your jurisdiction
- Energy efficiency: Uses the 2018 IECC provisions referenced by the RCO, generally less stringent than Oregon or California
- Storm shelters: Encouraged but not required (despite tornado activity)
- Radon: The RCO uses IRC Appendix F (radon-resistant construction), which is adopted locally — many jurisdictions in EPA Radon Zone 1 require passive radon-resistant techniques in new homes, but it is not a blanket statewide mandate. Confirm with your building department
- Sprinklers: Not required in one- and two-family dwellings (the IRC fire-sprinkler mandate was not adopted statewide)
Unlike some states, Ohio does not require fire sprinklers or storm shelters in one- and two-family dwellings — the IRC fire-sprinkler mandate was not adopted statewide, and storm shelters are encouraged but not required despite tornado activity.
Ohio Owner-Builder Laws
Ohio does not have a statewide general contractor licensing law. This is huge for owner-builders.
The Ohio Construction Industry Licensing Board (OCILB) licenses only the commercial specialty trades (electrical, plumbing, HVAC, hydronics, refrigeration). General contractors are not licensed by the state at all, and residential contractor registration — where it exists — is handled locally.
Legal Rights
You may act as your own general contractor on your own property because:
- Ohio does not require a state-issued general contractor license (residential or otherwise)
- Most cities and counties allow homeowners to pull their own permits as owner-builder
- Hiring labor is permitted without contractor licensing (the OCILB commercial trade licenses apply to contractors offering those services commercially — see below)
Critical Restrictions and Requirements
Local Permit Requirements: Even though Ohio has no state contractor license, most building departments require:
- A property owner verification (deed or title)
- A homestead declaration (the home will be your primary residence)
- A signed acknowledgment that you understand you're acting as your own contractor
- In some jurisdictions, an interview with the building official
One-Home-Per-Year Norm: While not a state law, most local jurisdictions limit owner-builder permits to one home every 1–2 years to prevent abuse by speculators.
Licensed Trade Contractors: If you hire a contractor for these trades, Ohio licenses the commercial contractor at the state level through OCILB:
| Trade | OCILB license |
|---|---|
| Electrical | Commercial electrical contractor license |
| Plumbing | Commercial plumbing contractor license |
| HVAC | Commercial HVAC contractor license (combustion appliances, refrigeration, connected systems) |
| Hydronics & Refrigeration | OCILB licensed |
Note these are commercial trade licenses. For residential one- to three-family work, the operative requirement is the local building department's permit and inspection — many local trade contractors register with the city/county rather than (or in addition to) holding an OCILB license. Always confirm what your jurisdiction requires.
Homeowner Doing Their Own Trade Work: This is where Ohio is friendly. There is no single statewide rule — it is set by each local building department — but most Ohio jurisdictions let an owner-occupant pull the permit and do their own electrical and plumbing on the home they own and live in. Examples confirmed in major jurisdictions:
- Homeowners may perform their own electrical work in their own home in most jurisdictions if they pull the permit personally and the work is inspected
- Columbus, for example, allows a plumbing permit to be pulled by an OCILB-licensed plumbing contractor or an occupying homeowner
- Montgomery County does not require homeowners to be registered to work on their own property
- HVAC homeowner allowances vary more widely — check locally
It must be your own primary residence, you must pull the permit yourself, and the work is held to the same code standards as a licensed contractor's work. Verify your specific jurisdiction's homeowner rule before you start — a few stricter cities limit or prohibit homeowner electrical work.
Liability and Insurance
As an owner-builder in Ohio:
- You're personally liable for any injuries on-site (workers' comp recommended for paid labor)
- You can typically obtain builder's risk insurance, but rates are higher than for licensed contractors
- Some lenders require owner-builders to carry liability insurance during construction
- Ohio has standard seller disclosure requirements that apply for years after sale
Seller Disclosure
Ohio Revised Code § 5302.30 requires sellers of residential property (one to four dwelling units) to complete a Residential Property Disclosure Form covering known material defects. Owner-built homes don't have to be labeled as such, but any known defects, unpermitted work, or code issues must be disclosed.
Permit Costs in Ohio
The figures below are planning estimates compiled from public fee schedules. Actual costs change often and vary by site — confirm exact fees with your local building department before budgeting.
Ohio permit costs are dramatically lower than coastal states. Most jurisdictions charge a per-square-foot fee plus separate fees for trades and inspections.
Major Metro Areas
Estimates below are for a 2,000 sq ft home.
| Cost item | Amount |
|---|---|
| Building permit | $0.45/sq ft of new construction + base fee (~$900 for 2,000 sq ft) |
| Plan review | ~$400 |
| Trade permits (electrical, plumbing, mechanical) | $450–$700 combined |
| Sewer/water tap fees | $4,000–$8,000 |
| Total typical cost | $5,800–$10,200 |
| Cost item | Amount |
|---|---|
| Building permit | Valuation-based sliding scale on construction value; ~$1,100–$1,400 for a 2,000 sq ft home (~$350K valuation) |
| Plan review | $20 per 1,000 sq ft ($20 minimum) |
| Park & Recreation fee | $175 per bedroom (Cleveland Codified Ord. Ch. 187) |
| State surcharge | 1% State of Ohio surcharge on permit fees |
| Trades | $500–$800 combined |
| Tap fees | $5,000–$9,000 |
| Total | $7,500–$12,000 |
| Cost item | Amount |
|---|---|
| Building permit | ~$0.50/sq ft (~$1,000 for 2,000 sq ft) |
| Plan review | ~$500 |
| Trades | $475–$725 |
| Tap fees | $4,500–$8,500 |
| Total | $6,500–$10,800 |
| Cost item | Amount |
|---|---|
| Building permit | $0.35/sq ft (~$700 for 2,000 sq ft) |
| Plan review | ~$350 |
| Trades | $400–$650 |
| Tap fees | $3,500–$6,500 |
| Total | $5,000–$8,400 |
| Cost item | Toledo (Lucas County) | Akron (Summit County) |
|---|---|---|
| Building permit | $0.35/sq ft (~$700) | $0.40/sq ft (~$800) |
| Trades | $400–$650 | $450–$700 |
| Tap fees | $3,500–$6,000 | $3,800–$6,500 |
| Total | $4,800–$8,100 | $5,200–$8,800 |
Suburban Counties
| County | Per-sq-ft rate | Total |
|---|---|---|
| Delaware County (Columbus suburbs) | ~$0.40/sq ft | $5,500–$9,500 |
| Warren County (Cincinnati suburbs) | ~$0.35/sq ft | $5,000–$8,500 |
| Medina County (Cleveland suburbs) | ~$0.40/sq ft | $5,500–$9,000 |
| Geauga County (Cleveland suburbs) | ~$0.35/sq ft | $4,800–$8,200 |
Rural Counties
| County | Per-sq-ft rate | Total |
|---|---|---|
| Holmes County (Amish country, light enforcement) | ~$0.25/sq ft | $2,500–$5,000 |
| Wayne County | ~$0.30/sq ft | $3,000–$6,000 |
| Coshocton County | ~$0.25/sq ft | $2,500–$5,500 |
| Tuscarawas County | ~$0.30/sq ft | $2,800–$5,800 |
| Adams County (some areas with minimal enforcement) | ~$0.25/sq ft | $2,000–$5,000 |
Hidden Fees
| Fee | Typical amount / note |
|---|---|
| Sewer/water tap fees | Often the largest single charge in metro Ohio |
| Stormwater fees | $200–$800 depending on lot size and disturbance |
| Driveway permit (county road tie-in) | $150–$400 |
| Septic permit and design | $500–$1,200 (rural areas) |
| Well permit | $200–$400 (rural areas) |
| Radon mitigation rough-in inspection | Usually included, but verify |
| Impact fees | A few growth jurisdictions charge them (Delaware County), but most Ohio counties don't |
Processing Timelines
Ohio is generally faster than coastal states.
| Jurisdiction | Time to permit |
|---|---|
| Columbus | 4–8 weeks |
| Cleveland | 6–10 weeks |
| Cincinnati | 4–8 weeks |
| Dayton | 3–6 weeks |
| Toledo, Akron | 3–6 weeks |
| Delaware, Warren, Medina (suburban) | 3–6 weeks |
| Wayne, Holmes, Tuscarawas, Adams (rural) | 1–3 weeks (small staff, small volume) |
Energy Code Requirements
Ohio energy code is moderate — much less stringent than Oregon, more so than Texas.
| Requirement | Zone 4A (Southern Ohio: Cincinnati, Dayton, southern counties) | Zone 5A (Central & Northern Ohio: Columbus, Cleveland, Toledo, Akron, northern counties) |
|---|---|---|
| Ceiling insulation | R-49 | R-49 |
| Wood-framed wall | R-20 cavity or R-13 + R-5 continuous | R-20 cavity or R-13 + R-5 continuous |
| Slab edge | R-10 to 24" below grade | R-10 to 24" |
| Windows | U-0.32 max | U-0.30 max |
| Air leakage | ≤5.0 ACH50 | ≤5.0 ACH50 |
Foundation and Frost Depth
| Region | Minimum frost depth |
|---|---|
| Southern Ohio (Zone 4A) | 32" |
| Central Ohio | 32–36" depending on local amendments |
| Northeast Ohio (Lake-effect belt) | 36–42" |
Check your specific jurisdiction — frost depth amendments vary.
Inspection Requirements
| # | Inspection | When |
|---|---|---|
| 1 | Footing | After excavation, before pour |
| 2 | Foundation | After rebar/concrete forms, before backfill |
| 3 | Underground plumbing | Before slab pour |
| 4 | Underground electrical | If applicable, before slab |
| 5 | Framing/sheathing | — |
| 6 | Electrical rough-in | — |
| 7 | Plumbing rough-in | — |
| 8 | Mechanical rough-in | — |
| 9 | Insulation | Before drywall |
| 10 | Drywall | Some jurisdictions |
| 11 | Final electrical | — |
| 12 | Final plumbing | — |
| 13 | Final mechanical | — |
| 14 | Final building / Certificate of Occupancy | — |
Typically 10–14 inspections. Schedule 1 week ahead in most jurisdictions; same-day or next-day available in many rural counties.
Radon Requirements
Most of Ohio falls in EPA Radon Zone 1 (highest risk). The RCO uses IRC Appendix F for radon-resistant construction, which is adopted locally — many Zone 1 jurisdictions require passive radon-resistant techniques in new homes, but it is not a blanket statewide mandate. Where required, expect:
- Vapor barrier under slab
- 4" gas-permeable layer (gravel) under slab
- 3" or 4" vent pipe routed from sub-slab to roof
- Electrical outlet near pipe (for future fan installation)
- Labeling at penetrations
This adds $400–$900 to build cost. Worth it — Ohio has elevated radon levels statewide.
Special Ohio Considerations
Lake-Effect Snow (Northeast Ohio)
Northeast Ohio sees extreme snow loads. If you're in Geauga, Ashtabula, Lake, Trumbull, or Cuyahoga counties — engineer roofs carefully.
Roof structural calculations must account for:
- Ground snow load: 25–35 psf in lake-effect snowbelt
- Roof snow load (per ASCE 7): 20–28 psf
- Drift loads: Especially significant where roofs change pitch or where parapets are present
- Ice dam considerations: Adequate insulation and ventilation to prevent dam formation
Expansive and Clay Soils
Ohio has significant expansive clay zones — a geotechnical evaluation is strongly recommended for slabs on grade.
Ohio has significant expansive clay zones, especially in:
- Western Ohio (Mercer, Auglaize, Darke counties)
- Lake Plains (north of I-90)
- Areas overlying lacustrine clay deposits
Foundation considerations:
- Geotechnical evaluation strongly recommended for slabs on grade
- Properly compacted base under slab
- Footings extending below frost line on undisturbed soil
- Drainage around foundation perimeter
Tornado Country
Ohio experiences tornadoes, especially in spring. While the RCO doesn't require storm shelters, consider:
- Reinforced safe rooms (a 5x7 closet with reinforced walls)
- FEMA P-361 design guidance for above-ground shelters
- Below-grade rooms (basements) are inherently safer
- Cost: $4,000–$10,000 for a basic in-home shelter
Septic Systems (Rural Areas)
Ohio Department of Health and county health departments regulate septic. Site evaluation is critical.
| Item | Cost |
|---|---|
| Percolation test | $300–$600 |
| Standard absorption system | $7,000–$14,000 |
| Aerobic system (required on poor sites) | $14,000–$24,000 |
| Pretreatment/sand filter combination on tight soils | $15,000–$28,000 |
Wells
Wells permitted through ODNR and county health.
| Item | Cost |
|---|---|
| Construction | $20–$35/foot drilled |
| Typical 200–400 ft well | $4,500–$12,000 |
| Pump and pressure tank installation | $1,500–$3,000 |
Top Counties for Owner-Builders
1. Delaware County (Columbus suburbs)
- Pros: Best schools in Ohio, strong real estate appreciation, growing economy
- Cons: Among the higher-cost jurisdictions in Ohio
- Best for: Owner-builders wanting metro proximity with good resale
2. Warren County (Cincinnati/Dayton corridor)
- Pros: Good schools, employment access, moderate fees
- Cons: Land prices rising fast
- Best for: Owner-builders wanting suburban convenience
3. Medina County (Cleveland suburbs)
- Pros: Excellent schools, rural feel within reach of Cleveland metro
- Cons: Northeast Ohio snow loads add cost
- Best for: Cleveland-area owner-builders
4. Holmes County (Amish country)
- Pros: Light enforcement, low fees, strong building tradition (Amish craftsmen)
- Cons: Limited urban amenities; some financing limitations
- Best for: Owner-builders prioritizing rural lifestyle and low costs
5. Wayne County (Wooster area)
- Pros: Moderate fees, agricultural setting, reasonable processing
- Cons: Limited employment outside Wooster proper
- Best for: Owner-builders wanting countryside without isolation
Most Expensive / Challenging Areas
The jurisdictions below carry the highest fees, strictest inspections, or toughest site conditions in the state — go in with eyes open.
- City of Cleveland: Older lot challenges, lead remediation on existing structures, expensive utility connections
- Cuyahoga County urban: Strict inspections, higher fees, slow processing in some communities
- City of Columbus: Higher-than-average fees, complex review for non-standard plans
- Coastal Ottawa, Erie: Floodplain restrictions, shoreline regulations
Key Resources
- Ohio Board of Building Standards (BBS): state code adoption, certified RBD list
- Ohio Construction Industry Licensing Board (OCILB): electrical, plumbing, HVAC, hydronics licensing
- Ohio Department of Health: septic system standards and county delegation
- Ohio EPA: stormwater rules and permits
- Ohio Department of Natural Resources (ODNR): well construction permits
- Your county or municipal building department: plan review, permit issuance, inspections
Common Questions
Do I need a license to build my own house in Ohio? No. Ohio does not require a state-issued general contractor license, so building your own home as owner-builder is straightforward. However, you must hire OCILB-licensed electricians, plumbers, and HVAC contractors for those trades (or pull homeowner permits for the work yourself in jurisdictions that allow it).
Can you build your own house without a permit in Ohio? It depends on the jurisdiction. Most metro and suburban counties enforce the RCO and require permits. Some rural counties without a certified Residential Building Department have very limited enforcement for one- and two-family dwellings.
What is the Ohio owner-builder exemption? Ohio doesn't have a formal state-level owner-builder exemption because there's no state contractor license to be exempt from. Local jurisdictions allow homeowners to pull their own permits and act as their own general contractor on their own primary residence.
How much does an Ohio owner-builder permit cost? Building permits in Ohio are among the most affordable in the country: $700–$1,200 for a typical 2,000 sq ft home in major metros, $400–$800 in rural counties. Sewer/water tap fees are usually the biggest add-on at $3,500–$9,000.
Which Ohio counties are best for owner-builders? Delaware, Warren, and Medina counties offer the best combination of resale value and reasonable processes. Holmes, Wayne, and Tuscarawas offer the lowest costs. Rural counties without certified RBDs have minimal enforcement but harder financing.
Typical Owner-Builder Timeline
Typical phased timeline for a part-time owner-builder in Ohio.
| Phase | Tasks |
|---|---|
| Months 1–2: Pre-permit | Site evaluation; septic perc test (if rural); architectural plans; energy compliance docs; radon plan (if required) |
| Months 2–3: Plan review | Submittal; review comments; resubmittal; permit issuance |
| Months 3–5: Foundation and shell | Excavation and footings; foundation pour; framing, sheathing, roof; window/door installation; framing inspection |
| Months 5–7: Rough-ins | Mechanical, electrical, plumbing rough-ins; insulation; drywall |
| Months 7–10: Finishes | Cabinets, flooring, trim, paint; final inspections; Certificate of Occupancy |
Total: 9–11 months (part-time owner-builder). Full-time, 7–9 months.
Final Thoughts for Ohio Owner-Builders
Ohio is the underrated owner-builder state. Without the regulatory burden of Oregon or California, without the wild-west legal risk of completely unregulated rural Texas, Ohio sits in a sweet spot: clear code, reasonable enforcement, affordable fees, and friendly building officials in most jurisdictions.
The big decisions:
- Pick the right county: Delaware for resale, Holmes/Wayne for affordability. Avoid older urban cores unless you want to tackle existing-structure regulations.
- Get your trades lined up early: OCILB-licensed electricians and plumbers in Ohio are in high demand. Book them 2–3 months in advance.
- Plan for radon: Don't skip the rough-in even if your specific lot tests low. Future buyers will care.
- Engineer for snow loads in northeast Ohio: Roof failures from drift loads are real in the lake-effect belt.
- Build in a basement: Most Ohio markets expect basements; they add tornado safety and significant living/storage space at low marginal cost.
Ohio rewards the practical, methodical owner-builder. The pace is slower than the coasts demand and the codes are forgiving enough that mistakes are usually correctable. It's an excellent state to build your first home yourself.
Ohio Owner-Builder FAQs
Can you build your own house in Ohio without a license?
Yes. Ohio has no statewide general contractor license for residential work, so you can legally act as your own general contractor on a home you own and occupy. You still need building permits from your local building department, and your home must meet the 2019 Residential Code of Ohio (based on the 2018 IRC). If you hire out the electrical, plumbing, or HVAC, those commercial trade contractors are licensed by the OCILB.
Do you need a contractor's license to build your own home in Ohio?
No. Ohio does not issue a statewide general contractor license, so there is no state GC license to obtain. General contractors are not licensed by the state at all; only commercial electrical, plumbing, HVAC, hydronics, and refrigeration contractors are licensed (through the OCILB). Some cities and counties have their own local contractor registration, but a homeowner building their own primary residence is generally exempt and can pull permits directly.
Can a homeowner do their own electrical and plumbing in Ohio?
In most Ohio jurisdictions, yes — an owner-occupant can pull the permit and do their own electrical and plumbing on the home they own and live in, provided the work is inspected and meets code. There is no single statewide rule; it is set by each local building department, and a few stricter cities limit homeowner electrical work. Columbus, for example, allows an occupying homeowner to pull a plumbing permit. Always confirm your jurisdiction's homeowner rule before starting.
What is the Ohio owner-builder exemption?
Ohio doesn't have a formal state-level owner-builder exemption because there's no state general contractor license requirement. Most local jurisdictions allow homeowners to pull their own permits and act as their own general contractor on their own primary residence.
Can you build your own house without a permit in Ohio?
Most Ohio counties enforce the Residential Code of Ohio (RCO) and require permits. Some rural counties without a certified Residential Building Department have minimal enforcement for one- and two-family dwellings, but financing and resale become more difficult without permits.
Do I need a contractor's license to be an owner-builder in Ohio?
No. Ohio doesn't issue state general contractor licenses, so no GC license is needed. However, you must hire OCILB-licensed electricians, plumbers, and HVAC contractors for trade work. Some jurisdictions allow homeowners to pull permits and perform their own electrical or plumbing work in their own home.
How much does an Ohio owner-builder permit cost?
Building permits in Ohio run $700-$1,200 for a typical 2,000 sq ft home in major metros and $400-$800 in rural counties. Total permit-related costs including trade permits and tap fees usually run $5,000-$10,000 in metro areas and $2,500-$5,500 in rural counties.
Which Ohio counties are best for owner-builders?
Delaware County offers the strongest resale value, Warren and Medina counties offer balance of cost and amenities, and Holmes, Wayne, and Tuscarawas counties offer the lowest construction costs. Avoid urban cores of Cleveland and Cincinnati for first-time owner-builds — older lots and existing-structure regulations complicate the process.
Does Ohio require radon mitigation in new homes?
It depends on your jurisdiction. Most of Ohio falls in EPA Radon Zone 1 (highest risk), and the RCO uses IRC Appendix F for radon-resistant construction, which is adopted locally rather than mandated statewide. Many Zone 1 jurisdictions require passive radon-resistant techniques in new homes — a sub-slab vapor barrier, gas-permeable layer, vent pipe routed from sub-slab to roof, and an electrical outlet for a future fan. Confirm with your building department. Cost: $400-$900.
Related State Guides
Building in a nearby Midwest state? Check the requirements for:
- Indiana Owner-Builder Permit Guide
- Pennsylvania Owner-Builder Permit Guide
- Tennessee Owner-Builder Permit Guide
- Virginia Owner-Builder Permit Guide
See all state owner-builder guides →
Last updated: May 2026. Verified this update: Ohio has no statewide general contractor license (OCILB licenses only commercial electrical, plumbing, HVAC, hydronics, and refrigeration contractors — per the Ohio Department of Commerce); homes follow the 2019 Residential Code of Ohio (2018 IRC base, effective July 1, 2019), while non-residential moved to the 2024 OBC (2021 I-Codes) on March 1, 2024; energy provisions use the 2018 IECC; seller disclosure is governed by ORC § 5302.30. Ohio codes are adopted by the Board of Building Standards and enforced locally. The exact NEC edition for residential work, homeowner DIY-trade rules, radon requirements, permit fees, and processing times all vary by jurisdiction — verify with your specific county or municipal building department before relying on any figure here.