Bathroom Remodel — Ohio license requirements
01 The project
The starting point is the work itself — Bathroom Remodel in Ohio. The job determines which trades are involved, and the trades determine which license classifications may be required.
| Component | Trade |
|---|---|
| Plumbing | Plumbing |
| Electrical | Electrical |
| Tile | Tile |
| Framing | Framing |
| Drywall | Drywall |
| Painting | Painting |
02 Jurisdiction
This project is evaluated for Ohio — the commercial-only specialty license state. The OCILB licenses exactly five trades (electrical, HVAC, hydronics, plumbing, refrigeration) under ORC ch. 4740, commercial only, on a PSI examination, five years' experience, $500,000 liability insurance and company assignment. There is no statewide general or residential contractor license and no state bond; residential work is local and governed by the ch. 4722 contract rule over $25,000. Ohio jurisdiction page.
Permit fees, local construction rules and any municipal licensing were not researched and remain LOCAL_AUTHORITY_REQUIRED. The continuing- education hours are a documented conflict (CONFLICT-OH-001) and the rule returns NOT_DETERMINED for the exact figure — never a guess. State requirements are not the complete story for any locality.
03 Trade → license
Relations below are recorded per state — only this jurisdiction's classifications are shown.
Trades involved: Plumbing, Electrical, Tile, Framing, Drywall, Painting.
- May require PLUMBING-CONTRACTOR — Plumbing Contractor License (OCILB) confirmed S-OH-4740-01 rule OH-TRADE-LICENSEA COMMERCIAL plumbing scope requires an OCILB plumbing contractor license (4740.01(A), 4740.02(B)); residential plumbing is regulated locally and by the ch. 4722 contract rules (research §N).
- May require ELECTRICAL-CONTRACTOR — Electrical Contractor License (OCILB) confirmed S-OH-4740-01 rule OH-TRADE-LICENSEThe electrical portion (receptacles, lighting, exhaust fan) is a separate ch. 4740 trade license.
- Component basis HYDRONICS-CONTRACTOR — Hydronics Contractor License (OCILB) confirmed S-OH-4740-01 rule OH-TRADE-LICENSEHydronic heating work carries the hydronics contractor license (4740.02(B)).
- Component basis CONTRACTING-COMPANY — Contracting Company License (assigned OCILB license) confirmed S-OH-4740-07 rule OH-COMPANY-ASSIGNMENTEach trade license must be assigned to the contracting company performing the work (4740.07).
- Alternative path CONTRACTING-COMPANY — Contracting Company License (assigned OCILB license) confirmed S-OH-4722-02 rule OH-HCSSAFor a RESIDENTIAL bathroom remodel priced at $25,000 or more, the ch. 4722 Home Construction Service Suppliers Act requires a written contract and $250,000 general liability coverage — a CONTRACT rule, not a credential (rule OH-HCSSA).
04 Scope
What the official sources say about the work involved — typed assertions, never a boolean "covers". Interpretations are marked as such.
- Officially included ELECTRICAL-CONTRACTOR Commercial Electrical Construction Work Lit By Ohio 4740 (may_perform) ORC 4740.13(A); 4740.01(A)/(F) S-OH-4740-13 Electrical contracting is its own license (rule OH-ELEC-LICENSE) — the low-voltage carve-out is SCOPE-OH-ELEC-LOWVOLT.
- Officially excluded ELECTRICAL-CONTRACTOR Low Voltage Systems Under 50 Volts Excluded From Electrical Licensure (may_not_perform) ORC 4740.13(D); 4740.13(C) S-OH-4740-13 The electrical licensure boundary; fire alarm/communication work falls outside (rule OH-LOW-VOLTAGE).
- Officially included HYDRONICS-CONTRACTOR Commercial Hydronics Construction Work Under Ohio 4740 (may_perform) ORC 4740.01(A)/(F); 4740.02(B) S-OH-4740-01
- Officially included PLUMBING-CONTRACTOR Commercial Plumbing Construction Work Under Ohio 4740 (may_perform) ORC 4740.01(A)/(F); 4740.02(B) S-OH-4740-01 A COMMERCIAL plumbing contractor license; residential plumbing is locally regulated and governed by ch. 4722 contract rules.
- Officially excluded CONTRACTING-COMPANY Residential Building Work Under The Ch 4740 License (may_not_perform) ORC 4740.01(F); OCILB board page S-OH-4740-01 Not an outright prohibition on licensed contractors doing residential work — it is that ch. 4740 does not COVER the work; residential is a local matter and a locality may require the state license (rule OH-COMMERCIAL-ONLY).
05 Requirements
| Requirement | Kind | Statement | Source |
|---|---|---|---|
| OCILB contractor license required for the five licensed trades ORC 4740.13(A) + 4740.01(A)/(F) + OCILB board page (read 2026-10-05) | license | ORC 4740.13(A) verbatim: 'No person shall act as or claim to be a type of contractor that this chapter licenses unless that person holds or has been assigned a license issued pursuant to this chapter for the type of contractor that person is acting as or claiming to be.' The chapter licenses five trades — 'a heating, ventilating, and air conditioning contractor, refrigeration contractor, electrical contractor, plumbing contractor, or hydronics contractor' (4740.01(A)) — and defines 'contractor' broadly (4740.01(B)). The OCILB verbatim: 'Licenses issued by the Board are Contractor Licenses and also referred to as Master Licenses.' | S-OH-4740-13Source S-OH-4740-13 — Ohio Legislative Service Commission — Ohio Revised Code / Ohio Administrative Code (codes.ohio.gov)ORC 4740.13 — Prohibition; low-voltage exclusion (FindLaw mirror) — ORC 4740.13(A) + 4740.01(A)/(F) + OCILB board page (read 2026-10-05) https://codes.findlaw.com/oh/title-xlvii-occupations-professions/oh-rev-code-sect-4740-13/ Retrieved 2026-10-05 · last verified 2026-10-05 Read in full 2026-10-05. (A) 'No person shall act as or claim to be a type of contractor that this chapter licenses unless that person holds or has been assigned a license issued pursuant to this chapter for the type of contractor that person is acting as or claiming to be.' (B) the attorney general may sue for injunctive relief. (C) A licensed contractor may install/serve/maintain related or interfaced control wiring 'on the condition that the control wiring is less than twenty-five volts.' (D) A person is NOT an electrical contractor subject to licensure for work limited to systems using LESS THAN FIFTY VOLTS of electricity: fire alarm or burglar alarm, cabling, tele-data sound, communication, and landscape lighting and irrigation. Backs REQ-OH-LICENSE-REQUIRED-001 and the low-voltage scope assertion. |
| The ch. 4740 license governs commercial projects; residential buildings are excluded ORC 4740.01(F) + OCILB board page (read 2026-10-05) | exemption | ORC 4740.01(F) verbatim: 'Construction project' means a construction project 'involving a building or structure subject to Chapter 3781. of the Revised Code and the rules adopted under that chapter, but not an industrialized unit or a RESIDENTIAL BUILDING as defined in section 3781.06 of the Revised Code.' The OCILB adds that although local departments regulate residential contractors, 'the State Licensing Law allows those building and health departments to require the State commercial license for their residential contractors.' | S-OH-4740-01Source S-OH-4740-01 — Ohio Legislative Service Commission — Ohio Revised Code / Ohio Administrative Code (codes.ohio.gov)ORC 4740.01 — Construction industry licensing board definitions (FindLaw mirror) — ORC 4740.01(F) + OCILB board page (read 2026-10-05) https://codes.findlaw.com/oh/title-xlvii-occupations-professions/oh-rev-code-sect-4740-01/ Retrieved 2026-10-05 · last verified 2026-10-05 Read in full 2026-10-05 (FindLaw mirror; page states 'Current as of January 01, 2026'). (A) 'License' means a license the board issues to an individual as a heating, ventilating, and air conditioning contractor, refrigeration contractor, electrical contractor, plumbing contractor, or hydronics contractor. (B) 'Contractor' means any individual or contracting company having responsibility for the means, method and manner of construction who holds out/represents itself as permitted or qualified and who performs or employs tradespersons. (D) 'Licensed trade' = HVAC, refrigeration, electrical, plumbing or hydronics. (F) 'Construction project' means a project 'involving a building or structure subject to Chapter 3781. of the Revised Code and the rules adopted under that chapter, but NOT an industrialized unit or a RESIDENTIAL BUILDING as defined in section 3781.06' — the statutory basis for the commercial-only scope. (G) 'Training agency' = an entity approved by the administrative section to provide continuing education. Backs the five classifications and the commercial-only scope. |
| The license is issued to an individual and assigned to ONE contracting company ORC 4740.07 verbatim (read 2026-10-05) | registration | ORC 4740.07(A)-(B): licenses are issued in the name of the individual, and an individual requests assignment to a contracting company; the company license states the assigning individual's name and position, and a license not assigned to a company is placed in inactive status. 4740.07(D): an assignment becomes invalid 90 days after the contractor's death or a change-of-company form. 4740.07(E): work under an assigned license is deemed conducted under the individual's personal supervision. 4740.07(H): no license may be assigned to more than one company at a time. | S-OH-4740-07Source S-OH-4740-07 — Ohio Legislative Service Commission — Ohio Revised Code / Ohio Administrative Code (codes.ohio.gov)ORC 4740.07 — License issued to an individual; assignment to a contracting company (FindLaw mirror) — ORC 4740.07 verbatim (read 2026-10-05) https://codes.findlaw.com/oh/title-xlvii-occupations-professions/oh-rev-code-sect-4740-07/ Retrieved 2026-10-05 · last verified 2026-10-05 Read in full 2026-10-05. (A) The administrative section issues and renews all licenses 'in the name of the individual who meets the requirements of section 4740.06'. (B) An applicant requests that the license be ASSIGNED to a contracting company with whom the individual is employed; the license issued to the contracting company states the assigning individual's name and position, and a license not assigned to a company is placed in inactive status. (D) An assignment becomes invalid 90 days after the contractor's death or a change-of-company form. (E) Work conducted under an assigned license is deemed conducted under the personal supervision of the named individual, and a violation is deemed the individual's. (F)(G)(H) No double assignment; the individual must be actively engaged and available for consultation; no license assigned to more than one company at a time. Backs the individual-license + company-assignment model (REQ-OH-COMPANY-ASSIGNMENT-001). |
| Home Construction Service Suppliers Act — a residential CONTRACT rule over $25,000 ORC 4722.01(C)-(D) + 4722.02(A)-(B) (read 2026-10-05) | contract rule | ORC 4722.01(C): a 'home construction service contract' is a contract to perform home construction services (construction, repair, improvement, remodel or renovation of a one-, two- or three-family dwelling) 'for an amount exceeding twenty-five thousand dollars'. 4722.01(D): a 'supplier' is a person who contracts with an owner for such services and who maintains general liability insurance of not less than $250,000. 4722.02(A): a supplier may not perform a home construction service costing $25,000 or more without a WRITTEN contract that includes the supplier's details, a description, dates, the total estimated cost and '(8) A copy of the supplier's certificate of insurance showing general liability coverage in an amount of not less than two hundred fifty thousand dollars'. 4722.02(B): excess costs over $5,000 require a written/oral estimate before the work. The HCSSA is a CONTRACT/consumer-protection law, NOT a registration or license. | S-OH-4722-02Source S-OH-4722-02 — Ohio Legislative Service Commission — Ohio Revised Code / Ohio Administrative Code (codes.ohio.gov)ORC 4722.02 — Home construction service contract requirements (FindLaw mirror) — ORC 4722.01(C)-(D) + 4722.02(A)-(B) (read 2026-10-05) https://codes.findlaw.com/oh/title-xlvii-occupations-professions/oh-rev-code-sect-4722-02/ Retrieved 2026-10-05 · last verified 2026-10-05 Read in full 2026-10-05. (A) No supplier shall perform a home construction service costing $25,000 or more unless it enters a WRITTEN contract including the supplier's name, physical address, phone and taxpayer ID; the owner's details; the property address; a description of the goods/services; anticipated start and completion dates; the total estimated cost; and '(8) A copy of the supplier's certificate of insurance showing general liability coverage in an amount of not less than two hundred fifty thousand dollars'. (B) If reasonably unforeseen but necessary excess costs exceed $5,000 over the entire contract, the supplier must give the owner a written or oral estimate before performing that work, with statutory 'EXCESS COSTS' notice language. (C) A cost-plus contract need not comply. Backs REQ-OH-HCSSA-001. |
| No statewide general or residential contractor license — verified absence OCILB board page verbatim (read 2026-10-05) | license | Ohio issues no statewide general-contractor or residential-building-contractor license. The OCILB verbatim: 'The Licensing Board regulates commercial contractors who perform the above five specialty trades' and 'All local building and health departments regulate residential contractors.' The only statewide construction credentials are the five ch. 4740 trade licenses and the State Fire Marshal's fire-protection credentials. | S-OH-OCILB-HOMESource S-OH-OCILB-HOME — Ohio Construction Industry Licensing Board (OCILB) — Ohio Department of Commerce, Division of Industrial ComplianceOCILB — Ohio Construction Industry Licensing Board (board home page) — OCILB board page verbatim (read 2026-10-05) Retrieved 2026-10-05 · last verified 2026-10-05 Read in full 2026-10-05 (official). Verbatim: 'The Ohio Construction Industry Licensing Board (OCILB) is a part of the Division of Industrial Compliance and is responsible for issuing licenses to qualified Electrical, Heating Ventilating and Air Conditioning (HVAC), Plumbing, Hydronics and Refrigeration Contractors who successfully pass the PSI licensing examination. The Licensing Board regulates commercial contractors who perform the above five specialty trades. Licenses issued by the Board are Contractor Licenses and also referred to as Master Licenses.' Verbatim: 'The Ohio Contractor Licensing Law (ORC 4740), requires building and health departments who have a registration in place to require the State License before issuing commercial permits. All local building and health departments regulate residential contractors. However, the State Licensing Law allows those building and health departments to require the State commercial license for their residential contractors.' Names the PSI exam, the eLicense Center lookup and the online renewal. Backs the commercial-only model and the five trades. |
| Building permits and residential licensing are local — LOCAL_AUTHORITY_REQUIRED OCILB board page + ORC 4740.12 (read 2026-10-05) | permit | The OCILB verbatim: 'All local building and health departments regulate residential contractors. However, the State Licensing Law allows those building and health departments to require the State commercial license for their residential contractors.' Building permits, local contractor registrations and residential licensing are therefore municipal/county matters; the specific permit rules and fees were not researched to a conclusion and are marked LOCAL_AUTHORITY_REQUIRED. | S-OH-OCILB-HOMESource S-OH-OCILB-HOME — Ohio Construction Industry Licensing Board (OCILB) — Ohio Department of Commerce, Division of Industrial ComplianceOCILB — Ohio Construction Industry Licensing Board (board home page) — OCILB board page + ORC 4740.12 (read 2026-10-05) Retrieved 2026-10-05 · last verified 2026-10-05 Read in full 2026-10-05 (official). Verbatim: 'The Ohio Construction Industry Licensing Board (OCILB) is a part of the Division of Industrial Compliance and is responsible for issuing licenses to qualified Electrical, Heating Ventilating and Air Conditioning (HVAC), Plumbing, Hydronics and Refrigeration Contractors who successfully pass the PSI licensing examination. The Licensing Board regulates commercial contractors who perform the above five specialty trades. Licenses issued by the Board are Contractor Licenses and also referred to as Master Licenses.' Verbatim: 'The Ohio Contractor Licensing Law (ORC 4740), requires building and health departments who have a registration in place to require the State License before issuing commercial permits. All local building and health departments regulate residential contractors. However, the State Licensing Law allows those building and health departments to require the State commercial license for their residential contractors.' Names the PSI exam, the eLicense Center lookup and the online renewal. Backs the commercial-only model and the five trades. |
06 Rule: OH-TRADE-LICENSE
The ch. 4740 license is TRADE-SPECIFIC: ORC 4740.01(A)/(D) names exactly five licensed trades — electrical, HVAC, hydronics, plumbing and refrigeration — and 4740.02 assigns each to a specialty section. A caller must hold (or have assigned) the license for the trade they are performing. Missing facts yield NOT_DETERMINED.
| Outcome | Conclusion | Caveats |
|---|---|---|
| licensed-trade | trade_specific_license_required |
|
| not-a-licensed-trade | not_a_state_licensed_trade |
|
Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-OH-4740-01S-OH-4740-02S-OH-4740-13
07 Rule: OH-COMPANY-ASSIGNMENT
ORC 4740.07: the license is issued to an individual and ASSIGNED to one contracting company; an unassigned license goes to inactive status; an assignment ends 90 days after death or a change-of-company form; work under the assigned license is deemed conducted under the named individual's supervision; no license may be assigned to more than one company at a time. Missing facts yield NOT_DETERMINED.
| Outcome | Conclusion | Caveats |
|---|---|---|
| assignment-required | company_assignment_required |
|
Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-OH-4740-07
08 Rule: OH-HCSSA
ORC ch. 4722: for a RESIDENTIAL home construction service (construction, repair, improvement, remodel or renovation of a one-, two- or three-family dwelling) costing $25,000 or more, the 'supplier' — who must maintain general liability insurance of at least $250,000 — must use a written contract with the statutory contents, and excess costs over $5,000 require an estimate before the work. This is a CONTRACT rule, not a license. Missing facts yield NOT_DETERMINED.
| Outcome | Conclusion | Caveats |
|---|---|---|
| written-contract | hcssa_written_contract_required |
|
| below-threshold | hcssa_not_applicable_below_threshold |
|
| not-residential | not_a_residential_contract | — |
Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-OH-4722-01S-OH-4722-02
09 Rule: OH-NO-STATEWIDE-GC
Verified absence: Ohio issues no statewide general-contractor or residential-building-contractor license. The OCILB regulates commercial contractors in the five specialty trades only, and 'All local building and health departments regulate residential contractors.' Missing facts yield NOT_DETERMINED.
| Outcome | Conclusion | Caveats |
|---|---|---|
| no-gc-license | no_statewide_general_contractor_license |
|
| residential-local | residential_regulated_locally |
|
Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-OH-OCILB-HOMES-OH-OCILB-CONTRACTORS
10 Commercial vs residential limbs
| Portion | Ohio answer | Source |
|---|---|---|
| Commercial plumbing | an OCILB plumbing contractor license (rule OH-TRADE-LICENSE) | S-OH-4740-13 |
| Commercial electrical / hydronics | separate OCILB trade licenses (4740.01(A), 4740.02(B)) | S-OH-4740-13 |
| Residential over $25,000 | ch. 4722 written contract + $250,000 GL — a contract rule, not a license (rule OH-HCSSA) | S-OH-4722-02 |
| General contractor | no statewide license — local regulation (rule OH-NO-STATEWIDE-GC) | S-OH-OCILB-HOME |
| Company assignment | the trade license is assigned to the company (4740.07) | S-OH-4740-07 |
11 Permit and verification layer
Ohio separates the credential from the permit and the residence: the STATE decides who may work on a commercial project (the ch. 4740 trade licence), while the city or county issues the building permit and regulates residential contractors. The permit and its rules are local — LOCAL_AUTHORITY_REQUIRED. S-OH-4740-12
Verify the credential that actually applies on the official lookup before relying on any outcome here: OCILB eLicense Center (the State Fire Marshal publishes its own SFM lookup and ODOT a prequalified contractor listing). S-OH-OCILB-HOME
Source S-OH-OCILB-CONTRACTORS — Ohio Construction Industry Licensing Board (OCILB) — Ohio Department of Commerce, Division of Industrial Compliance
OCILB — Contractors & Contracting Companies (requirements, fees, CE, renewal, reciprocity) — OCILB Contractors page + ORC 4740.06 (read 2026-10-05)
Retrieved 2026-10-05 · last verified 2026-10-05
Read in full 2026-10-05 (official). Requirements to receive a state license: be at least 18; be a US citizen or legal alien with proof; have been a tradesperson in the trade for not less than 5 years immediately prior, OR currently be a registered engineer with 3 years' business experience in the trade; never have been convicted of a disqualifying offense (H.B. 263); pass the examination in the trade; 'Carry minimum $500,000 contractor liability coverage'; pay the applicable fees. After board approval the applicant must complete a State and Federal (BCI/FBI) background check before sitting for the exam. CE: 'All trades must complete 8 hours of CE for one-year renewals or 24 hours for three-year renewals. Electrical trade must have half of the required hours in code courses.' Escrow/inactive status costs 'the $60 renewal fee annually' with no CE or insurance, and reactivation needs up to 24 hours CE plus proof of liability insurance. Renewal: submit the form and fee by the expiration date to avoid a late fee; no longer proves insurance at renewal but must maintain at least $500,000 in a single company name. Fees from the checklist: '$25 application fee per trade'; '$25 licensing fee per trade approved'; '$25 company name change fee per trade'. Reciprocity states listed (AL HVAC/Refrigeration; AR Plumbing; KY, LA, MS; NC, SC, TN, WV, VA, TX electrical and others). Backs practically every Ohio requirement and the fee rows.