- The TN-BC exam has 100 questions, a 5-hour limit, and requires a 73% score to pass.
- Prov charges $53 per attempt; the initial contractor application runs $250, with $200 renewals every two years.
- Estimating and Plan Reading and Concrete and Concrete Reinforcement each carry the heaviest weight at 15%.
- The exam is open-book - know your 2021 IBC, 2018 IRC, Study Guide, and OSHA 29 CFR 1926 well enough to navigate fast.
Exam Snapshot: The Numbers You Need
If you only have five minutes before you close this tab, memorize this section. The Tennessee Commercial (BC-B) Contractor Examination is administered by Prov on behalf of the Tennessee Board for Licensing Contractors, with new exam appointments running through Prov since July 1, 2026. This is the full commercial-building classification - distinct from the combined BC exam and from the limited small-commercial classification - so every fact below is scoped specifically to BC-B.
- Format: Open-book, computer-based, multiple-choice
- Length: 100 questions
- Time limit: 5 hours
- Passing score: 73%
- Delivery options: In-person test center or remote via Examroom
- Fee per attempt: $53 (paid to Prov)
For a deeper breakdown of how that score is calculated and what a "passing" answer count actually looks like, see TN-BC Passing Score 2026: Exactly What You Need to Pass.
Registration, Fees, and Score Validity
Understanding the money and timeline mechanics is part of passing on your first attempt - showing up unsure of the fee structure or the score window creates avoidable stress on exam day. Here's the full picture:
- Prov exam fee: $53 per attempt (this is separate from the license application)
- Initial contractor application fee: $250
- License renewal: every two years, $200
- Score validity: exam scores are typically valid for two years
- Bulletin reference: the current Prov bulletin is dated July 13, 2026 - always confirm you're studying against the current version
Beyond the exam itself, applicants must also pass Tennessee Business and Law, document relevant experience, provide a reference, demonstrate financial capacity (either through a required financial statement or the Board-approved surety-bond route), and carry liability insurance plus workers' compensation coverage or a documented exemption. None of that is optional - the exam is one piece of a larger licensing package. A full walkthrough of every prerequisite lives at TN-BC Requirements 2026: Eligibility, Prerequisites & How to Qualify, and the complete cost picture - exam fee, application fee, renewal, and related expenses - is broken down at TN-BC Certification Cost 2026: Complete Pricing Breakdown.
Key Takeaway
Budget for $53 per exam attempt plus the $250 initial application fee separately - they are billed through different channels and at different points in the licensing process.
What's on the Open-Book Reference List
Because this exam is open-book, the reference list itself is a study tool. Prov's bulletin lists exactly four sources you're permitted to use:
- 2021 International Building Code (IBC)
- 2018 International Residential Code (IRC)
- Study Guide for Commercial Building Contractor (2024)
- OSHA 29 CFR Part 1926
Notice the IRC appears alongside the IBC - a detail many candidates overlook because they assume a commercial exam only tests commercial code. Some Sitework, Footings and Foundations, and Carpentry questions cross into residential-adjacent code sections, so don't skip the IRC just because you're pursuing the commercial classification.
Domain-by-Domain Cheat Sheet
The exam draws from 15 content areas, and they are not weighted equally. Two domains tie for the heaviest share of the exam at 15% each, which means roughly 30% of your 100 questions come from just these two areas.
Domain 1: Estimating and Plan Reading (tied for highest weight)
Candidates must read commercial plan sets, take off quantities, and reconcile drawings against specifications.
- Practice reading scaled drawings and detail callouts quickly
- Know how to calculate material quantities from plan dimensions
Domain 5: Concrete and Concrete Reinforcement (tied for highest weight)
This covers mix design basics, reinforcement placement, curing, and formwork as applied to commercial structures.
- Understand rebar sizing and placement tolerances
- Know curing time relationships and formwork stripping considerations
The remaining 13 domains - General Code, Sitework, Footings and Foundations, Masonry, Carpentry, Doors/Windows/Stairs, Interior Finish, Structural Steel, Roofing/Siding/Insulation, Plumbing Concepts, HVAC Concepts, Electrical Concepts, and OSHA Safety - round out the rest of the exam. None of them are throwaway domains; a candidate weak in Structural Steel or Electrical Concepts can still fail even after nailing Estimating and Concrete. For a full breakdown of every domain with study priorities, go to TN-BC Exam Domains 2026: Complete Guide to All 15 Content Areas.
| Domain Group | Approx. Weight | Study Priority |
|---|---|---|
| Estimating and Plan Reading | 15% | Highest |
| Concrete and Concrete Reinforcement | 15% | Highest |
| Remaining 13 domains combined | ~70% | High, but individually lighter |
Licensing Context: Why the Thresholds Matter
Tennessee contractor licensing generally applies to projects of $25,000 or more. That threshold is worth memorizing on its own - it's the kind of fact that can appear in a General Code question and also shapes why the license exists in the first place. Employers and general contractors hiring commercial project leads, estimators, and superintendents care about this license precisely because it signals someone can legally bid and manage work above that dollar threshold.
If you're weighing whether pursuing this classification (versus the combined BC exam or the small-commercial classification) makes sense for your career path, the ROI and career-fit questions are covered at Is the TN-BC Certification Worth It? Complete ROI Analysis 2026, and hiring-side context is available at TN-BC Jobs and TN-BC Salary Guide 2026: Complete Earnings Analysis.
Key Takeaway
Know the $25,000 project threshold cold - it anchors why the license matters and can show up directly in General Code questions.
Last-Week Study Plan
If you're inside your final seven days before exam day, don't restart your whole study plan - triage. This isn't a generic study calendar; it's built around the actual weighting of the TN-BC domains.
Reinforce the Heavyweights
- Drill Estimating and Plan Reading takeoffs and quantity math
- Review rebar placement and formwork rules under Concrete and Concrete Reinforcement
Shore Up Structural and Systems Domains
- Footings and Foundations, Structural Steel, and Masonry code triggers
- Plumbing, HVAC, and Electrical Concepts - focus on coordination clashes, not deep trade calculations
Finish Weight Sitework, Safety, and Finishes
- OSHA Safety scenarios tied to 29 CFR 1926 fall-protection and excavation rules
- Roofing/Siding/Insulation, Interior Finish, Doors/Windows/Stairs quick review
Logistics and Light Review
- Confirm test-center or Examroom remote setup and ID requirements
- Rebuild your reference index tabs; skim your weakest domain notes only
For a longer-horizon plan that starts well before exam week, see TN-BC Study Guide 2026: How to Pass on Your First Attempt, and if you're still deciding how much runway you need, How Hard Is the TN-BC Exam? Complete Difficulty Guide 2026 walks through realistic difficulty expectations by domain.
Common Last-Minute Mistakes
A handful of avoidable errors show up repeatedly among candidates who otherwise knew the material:
- Ignoring the IRC: treating this as an IBC-only exam and skipping the 2018 IRC entirely, then getting caught on cross-referenced questions.
- Underestimating the clock: five hours for 100 questions feels comfortable until you're paging through code books on question 12.
- Skipping OSHA scenario practice: memorizing 29 CFR 1926 sections without practicing applied, scenario-style questions.
- Overweighting light domains: spending equal hours on every one of the 15 domains instead of tilting toward Estimating and Plan Reading and Concrete and Concrete Reinforcement.
- Forgetting the non-exam requirements: assuming passing the exam alone secures the license, when Business and Law, insurance, and financial capacity documentation are all separately required.
Running full-length timed practice sets on our practice test platform is one of the fastest ways to catch these mistakes before they cost you on exam day. If you want a data-informed sense of how candidates typically perform, TN-BC Pass Rate 2026: What the Data Shows covers what's known about outcomes.
FAQ
The exam has 100 multiple-choice questions with a 5-hour time limit, and you need a 73% score to pass.
You may reference the 2021 International Building Code, 2018 International Residential Code, the Study Guide for Commercial Building Contractor (2024), and OSHA 29 CFR Part 1926 - no other materials are listed.
Prov charges $53 per exam attempt. This is separate from the $250 initial contractor application fee and the $200 renewal fee due every two years.
Estimating and Plan Reading and Concrete and Concrete Reinforcement are tied as the largest domains at 15% each, so they deserve the most study time, though all 15 domains are tested.
Yes. Prov offers both in-person test-center delivery and remote delivery through Examroom for the TN-BC exam.
Keep this page bookmarked as your quick-reference sheet, and pair it with TN-BC Certification or What Is TN-BC? if you're still confirming this is the right classification before you register. When you're ready to test your recall under real exam conditions, head to the practice test homepage and run a timed set against the actual domain weighting.