- What "Passing" Actually Means on the MI-RB
- How 116 Correct Answers Break Down by Domain
- Business and Law vs. Practice/Trade: One Score, Two Halves
- The Domains That Decide Whether You Hit 116
- Registration, Fees, and the Retest Reality
- Building a Study Plan Around the 72.5% Threshold
- Quick Reference: Score Math at a Glance
- Frequently Asked Questions
- You need 116 correct answers out of 160 scored questions - exactly 72.5% - to pass the MI-RB.
- The exam blends 50 Business and Law questions with 110 Practice/Trade questions into one 240-minute, closed-book test.
- Up to 10 unscored experimental questions may appear alongside the 160 that count toward your score.
- Retakes cost $117 and still require passing the combined exam - there is no separate retest for just one section.
What "Passing" Actually Means on the MI-RB
The Michigan Residential Builder License Examination doesn't use a scaled score, a percentile rank, or a curve. According to PSI's August 3, 2026 candidate handbook, the exam is graded on a straightforward raw-score basis: out of 160 scored questions, you must answer 116 correctly to pass. That works out to 72.5%, and it's the same threshold whether this is your first attempt or your third.
This is a closed-book, multiple-choice, computer-based test administered through PSI Services LLC on behalf of Michigan's Department of Licensing and Regulatory Affairs (LARA), Bureau of Construction Codes. It's available in both English and Spanish at PSI test centers. You have 240 minutes to work through the material, which averages out to roughly 90 seconds per scored question - though the exam also seeds in up to 10 additional unscored experimental questions, so the total item count you actually see on screen can run higher than 160 without any warning about which items count.
How 116 Correct Answers Break Down by Domain
The MI-RB isn't a generic contractor's exam - it's built from 23 named domains, each with a fixed number of scored questions defined in the PSI outline. Domains 1 through 8 make up the Business and Law portion (50 questions total); domains 9 through 23 make up Practice/Trade (110 questions total). If you want the full breakdown of what each domain covers, the MI-RB Exam Domains 2026: Complete Guide to All 23 Content Areas walks through every content area in depth. For passing-score purposes, what matters most is understanding that missing questions in a heavily weighted domain hurts far more than missing them in a lightly weighted one.
For example, a domain with only 1 or 2 scored questions (like Types of Business Organization or Personnel) can be entirely missed and barely dent your total. A domain with 14 or 16 scored questions can single-handedly make or break whether you clear 116.
Business and Law Domains (1-8) - 50 Questions
These questions test the legal, administrative, and financial side of running a licensed residential building operation in Michigan.
- Domain 1: Regulatory and Statutory Requirements - 13 questions (largest Business and Law domain)
- Domain 4: Contracts - 7 questions
- Domain 5: Project Management and Administration - 6 questions
- Domain 6: Accounting and Finance - 6 questions
- Domain 7: Insurance, Bonds and Liens - 11 questions
- Domains 2, 3, and 8 (Types of Business Organization, Estimating, Personnel) - 4, 1, and 2 questions respectively
Practice/Trade Domains (9-23) - 110 Questions
These questions cover the physical construction knowledge required to build code-compliant residential structures in Michigan, referencing sources like the 2015 Michigan Residential Code.
- Domain 14: Carpentry - 16 questions (the single largest domain on the entire exam)
- Domain 10: Plans, Specifications and Estimating - 14 questions
- Domain 11: Excavation/Sitework - 9 questions
- Domain 16: Roofing - 9 questions
- Domain 12: Footings and Foundation Walls - 11 questions
- Domain 23: Safety and Employee Protection Including MIOSHA - 10 questions
Business and Law vs. Practice/Trade: One Score, Two Halves
A common misconception is that Business and Law and Practice/Trade are scored separately, as if you need to pass each independently. That's not how the MI-RB works. Per the PSI handbook, both sections are administered and scored as one combined examination - and that holds true on retakes as well. If you fail overall, you retake the entire 160-question exam, not just your weaker section.
This has a practical implication for your prep: you can't "bank" a strong Practice/Trade score to offset a weak Business and Law performance across separate testing sessions, because there's only one session and one combined tally. You either reach 116 total correct answers in that sitting, or you don't. If you're still deciding how to structure your review, the MI-RB Study Guide 2026: How to Pass on Your First Attempt covers how to balance prep time between the two halves.
Key Takeaway
Don't think of Business and Law and Practice/Trade as two exams. Treat 116 out of 160 as one combined finish line, and allocate study time proportionally - roughly 31% of your prep to Business and Law (50 of 160 questions) and 69% to Practice/Trade (110 of 160).
The Domains That Decide Whether You Hit 116
Not every domain deserves equal attention. Because the passing score is a raw count, not a domain-by-domain pass/fail, your best return on study time comes from mastering the domains carrying the most questions. Carpentry leads the entire exam at 16 questions, and Regulatory and Statutory Requirements leads Business and Law at 13. Combined with Plans, Specifications and Estimating (14), Footings and Foundation Walls (11), Insurance, Bonds and Liens (11), and Safety and Employee Protection Including MIOSHA (10), these six domains alone account for 75 of the 160 scored questions - nearly half the entire exam.
If you're trying to gauge how difficult the overall test will feel based on this weighting, How Hard Is the MI-RB Exam? Complete Difficulty Guide 2026 breaks down where candidates typically struggle within these heavier domains.
Registration, Fees, and the Retest Reality
Before you can sit for the exam, LARA requires 60 hours of approved prelicensure education - including at least six hours in each of seven prescribed subjects plus 18 elective hours - along with a physical Michigan business address, identification, education verification, and good-moral-character certification. You must get LARA approval before scheduling your test, and you need to complete the entire application process within its one-year window. For a full checklist of what's required before you can even book a seat, see MI-RB Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Once approved, the initial individual license application runs $195. The exam or retest fee is $117 - and because Business and Law and Practice/Trade are scored together, a retake means paying that fee again for the full 160-question exam, not a discounted single-section retest. If you're budgeting for the process end-to-end, MI-RB Certification Cost 2026: Complete Pricing Breakdown lays out how these fees stack up alongside education costs.
After licensure, individual licenses renew every three years by May 31 in the license's staggered renewal year, for a $150 fee. Your first two renewal cycles require 21 continuing-education hours each; every cycle after that only requires 3 hours. Keep your completion records on hand - LARA can audit them.
Building a Study Plan Around the 72.5% Threshold
Because passing means clearing a fixed raw count rather than beating a curve, the smartest prep strategy is to work backward from the domain weights. Spend early weeks on the heaviest domains - Carpentry, Regulatory and Statutory Requirements, Plans/Specifications and Estimating - since mastering these gives you the largest point cushion. Save lighter domains for later review passes, when you're refreshing rather than learning from scratch.
Heaviest Practice/Trade Domains
- Carpentry (16 questions) and Plans, Specifications and Estimating (14 questions)
- Cross-reference concepts against the 2015 Michigan Residential Code
Business and Law Core
- Regulatory and Statutory Requirements (13 questions) and Insurance, Bonds and Liens (11 questions)
- Contracts and Accounting and Finance as secondary review
Remaining Practice/Trade Domains
- Excavation/Sitework, Footings and Foundation Walls, Roofing, Safety and MIOSHA
- Full-length timed practice under the 240-minute limit
Light Domains + Full Simulation
- Quick review of small-weight domains (Types of Business Organization, Personnel, Ventilation, Specialties)
- At least one full practice run on a full-length practice test to confirm pacing at 90 seconds per question
If your available prep time is short, running through timed practice questions modeled on the real exam format is one of the fastest ways to see exactly where your raw score would land against the 116-answer threshold before test day.
Quick Reference: Score Math at a Glance
| Element | Value |
|---|---|
| Total scored questions | 160 |
| Business and Law questions | 50 (Domains 1-8) |
| Practice/Trade questions | 110 (Domains 9-23) |
| Unscored experimental questions | Up to 10 additional |
| Correct answers needed to pass | 116 out of 160 |
| Passing percentage | 72.5% |
| Time limit | 240 minutes |
| Retest fee | $117 (full combined exam) |
For a broader look at how this passing score compares to overall candidate performance, MI-RB Pass Rate 2026: What the Data Shows is a useful companion read once you've internalized the score mechanics here.
Frequently Asked Questions
You need 116 correct answers out of 160 scored questions, which equals 72.5%. This is a fixed raw-score threshold, not a curved or scaled score.
No. Both sections combine into one 160-question exam and are scored together, including on retakes. There is no independent pass/fail for either section alone.
No. Up to 10 additional unscored questions may appear alongside the 160 scored ones, but since you can't identify them during the test, you should answer every question as if it counts.
A retest costs $117, and you must retake the full combined 160-question exam again - there is no reduced-fee or single-section retest option.
Carpentry (Domain 14) is the largest domain overall with 16 scored questions. Within Business and Law, Regulatory and Statutory Requirements (Domain 1) leads with 13 questions.