- What the MI-RB Certification Actually Covers
- Exam Format, Fees, and Scoring
- Domain Breakdown: Business and Law vs. Practice/Trade
- Eligibility and the Prelicensure Path
- Building a Domain-Weighted Study Schedule
- After You Pass: License, Renewal, and CE
- Who Needs This Certification
- Frequently Asked Questions
- The MI-RB exam has 160 scored questions: 50 Business and Law and 110 Practice/Trade, taken as one combined test.
- You need 116 correct answers out of 160 (72.5%) to pass, in a 240-minute window.
- Exam/retest fee is $117; the initial individual license application adds $195.
- Carpentry (Domain 14) is the single largest content area at 16 questions.
What the MI-RB Certification Actually Covers
The MI-RB certification - short for the Michigan Residential Builder License Examination - is the credentialing exam administered on behalf of the Michigan Department of Licensing and Regulatory Affairs (LARA), Bureau of Construction Codes. PSI Services LLC delivers the computer-based test at approved centers in English and Spanish. Passing this exam is a required step toward holding an individual Residential Builder license in Michigan, distinct from the narrower Maintenance & Alteration trade license track.
If you're still getting oriented to the credential itself, our companion pieces on what MI-RB actually is and what the MI-RB designation means for your career are good starting points before you dive into exam mechanics.
Exam Format, Fees, and Scoring
Per PSI's August 3, 2026 candidate handbook, the MI-RB exam is a single, closed-book, multiple-choice test combining both content areas into one sitting. There is no separate scheduling or separate scoring for Business and Law versus Practice/Trade - even on a retake, both sections are answered and scored together in one 240-minute session.
- Scored questions: 160 total (50 Business and Law + 110 Practice/Trade)
- Unscored questions: up to 10 additional experimental items may appear, indistinguishable from scored ones
- Time limit: 240 minutes
- Passing score: 116 correct out of 160 (72.5%)
- Exam or retest fee: $117
- Initial individual license application fee: $195
Because the two content areas are graded as one composite score, a candidate can't "pass" Business and Law while failing Practice/Trade or vice versa - LARA and PSI treat the exam as a single pass/fail outcome. For the exact mechanics of how that raw score translates to a pass, see our dedicated breakdown of the MI-RB passing score.
Key Takeaway
Study both content areas in parallel rather than mastering one and cramming the other last - the combined scoring model rewards balanced preparation across all 23 domains, not lopsided strength in one half.
Domain Breakdown: Business and Law vs. Practice/Trade
The MI-RB exam blueprint splits into two content areas spanning 23 domains total. Domains 1 through 8 make up Business and Law (50 questions); domains 9 through 23 make up Practice/Trade (110 questions). Knowing the official question allocation per domain lets you weight your study time correctly instead of guessing.
| Domain | Content Area | Question Count |
|---|---|---|
| 1. Regulatory and Statutory Requirements | Business and Law | 13 |
| 2. Types of Business Organization | Business and Law | 4 |
| 3. Estimating | Business and Law | 1 |
| 4. Contracts | Business and Law | 7 |
| 5. Project Management and Administration | Business and Law | 6 |
| 6. Accounting and Finance | Business and Law | 6 |
| 7. Insurance, Bonds and Liens | Business and Law | 11 |
| 8. Personnel | Business and Law | 2 |
| 9. Site Engineering | Practice/Trade | 5 |
| 10. Plans, Specifications and Estimating | Practice/Trade | 14 |
| 11. Excavation/Sitework | Practice/Trade | 9 |
| 12. Footings and Foundation Walls | Practice/Trade | 11 |
| 13. Concrete | Practice/Trade | 7 |
| 14. Carpentry | Practice/Trade | 16 |
| 15. Masonry | Practice/Trade | 9 |
| 16. Roofing | Practice/Trade | 7 |
| 17. Insulation | Practice/Trade | 5 |
| 18. Ventilation | Practice/Trade | 2 |
| 19. Windows, Doors and Skylights | Practice/Trade | 5 |
| 20. Siding Installation | Practice/Trade | 3 |
| 21. Interior and Exterior Finishes | Practice/Trade | 5 |
| 22. Specialties | Practice/Trade | 2 |
| 23. Safety and Employee Protection Including MIOSHA | Practice/Trade | 10 |
Two domains deserve special attention. Regulatory and Statutory Requirements (Domain 1) leads the entire Business and Law section at 13 questions, meaning statutory definitions, licensing rules, and LARA authority questions carry outsized weight. Carpentry (Domain 14) is the single largest domain in the whole exam at 16 questions, edging out even Plans, Specifications and Estimating (14) and Footings and Foundation Walls (11). For a domain-by-domain walkthrough of what to actually study inside each area, see the complete guide to all 23 MI-RB content areas.
Domain 14: Carpentry
As the highest-weighted domain on the exam, Carpentry questions test framing sequences, structural fastening, floor and roof framing systems, and finish carpentry standards referenced against Michigan's residential code.
- Framing terminology and load-bearing member identification
- Fastener and connector selection for structural assemblies
- Sequencing of rough carpentry relative to other trades
Domain 1: Regulatory and Statutory Requirements
This domain anchors the Business and Law section and draws heavily on LARA's licensing statutes and administrative rules governing residential builders.
- Licensing authority and scope of the Bureau of Construction Codes
- Grounds for disciplinary action and license suspension
- Statutory definitions distinguishing builder vs. maintenance & alteration licensure
Eligibility and the Prelicensure Path
Before you can even sit for the exam, LARA requires standard applicants to complete 60 hours of approved prelicensure education. That total breaks down into at least six hours in each of seven prescribed subject areas, plus 18 elective hours to round out the requirement. Course completion documentation becomes part of your license application package alongside identification, proof of a physical Michigan business address, and a good-moral-character certification.
Approval from LARA to test must be secured before you can schedule your PSI appointment, and once you're approved, the entire application process must be completed within a one-year window. Miss that window and you'll need to restart parts of the process. Full detail on documentation, timelines, and the application form itself is covered in our MI-RB eligibility and requirements guide.
Building a Domain-Weighted Study Schedule
Generic study advice - spaced repetition, timed drills, active recall - only helps if it's mapped to the MI-RB blueprint's actual point distribution. Since Carpentry, Plans/Specifications/Estimating, and Footings and Foundation Walls together account for 41 of the 160 scored questions, they deserve the largest blocks of study time, while low-weight domains like Estimating (1 question) or Ventilation (2 questions) need only a light review pass.
Business and Law Foundations
- Domain 1 (Regulatory and Statutory Requirements) and Domain 7 (Insurance, Bonds and Liens) - the two heaviest Business and Law domains
- Review LARA statutory definitions and licensing scope
High-Weight Practice/Trade Domains
- Domain 14 (Carpentry) and Domain 10 (Plans, Specifications and Estimating)
- Cross-reference framing and layout questions against the 2015 Michigan Residential Code
Structural and Site Domains
- Domain 11 (Excavation/Sitework), Domain 12 (Footings and Foundation Walls), Domain 15 (Masonry)
- Domain 23 (Safety and Employee Protection Including MIOSHA) - 10 questions, often underestimated
Remaining Domains and Full Simulation
- Sweep lower-weight domains: Ventilation, Siding Installation, Specialties, Estimating
- Take full-length, 240-minute timed practice runs replicating the 160-question format
For a structured week-by-week plan with more detail on pacing and error-log techniques specific to this exam, see the full MI-RB Study Guide for passing on your first attempt. And if you're wondering whether 72.5% is a realistic target given the exam's difficulty, our difficulty guide and pass rate analysis walk through what the data actually shows.
Key Takeaway
Run at least one full practice exam under the real 240-minute time limit before test day - pacing across 160 questions is as much a skill as domain knowledge.
After You Pass: License, Renewal, and CE
Passing the exam is a milestone, not the finish line. After passing, you still complete the individual license application (the $195 fee applies here) with LARA, submitting your identification, education verification, and moral-character certification. Once licensed, individual Residential Builder licenses renew every three years by May 31 of the applicable renewal year, and renewal years are staggered across the licensee population. The renewal fee is $150.
Continuing education obligations increase in the early years: each of your first two renewal cycles requires 21 continuing-education hours, while subsequent cycles drop to 3 hours each. Keep your completion records on file - LARA can audit them. Note also that a company license and its qualifying officer's individual license are maintained separately; one doesn't substitute for the other.
Full cost breakdowns covering exam fees, application fees, renewal fees, and CE costs over a multi-year horizon are collected in our MI-RB certification cost guide.
Who Needs This Certification
The Residential Builder license - and by extension the MI-RB exam - is required for individuals contracting to build, alter, or repair residential structures in Michigan under the Residential Builder classification, as opposed to the narrower Maintenance & Alteration trade scope. Builders, remodeling contractors, and construction business owners who want to legally bid and contract residential work in their own name or through a licensed company typically need this credential. If you're evaluating whether pursuing this license fits your career goals, our analysis of whether the MI-RB certification is worth it and our earnings guide for licensed residential builders are useful next reads. You can also browse MI-RB related job opportunities to see how the license is used in the field.
Ready to test your knowledge against real exam-style questions across all 23 domains? Head to our practice test platform to start building familiarity with the question format before scheduling your PSI appointment. Working through timed practice sets is one of the most direct ways to confirm you're ready for the 240-minute format.
Frequently Asked Questions
The exam has 160 scored questions - 50 in Business and Law and 110 in Practice/Trade - plus up to 10 additional unscored experimental questions that may appear without notice.
You need 116 correct answers out of the 160 scored questions, which equals 72.5%. Both content areas are combined into this single score.
The exam or retest fee is $117. Separately, the initial individual license application carries a $195 fee once you're ready to apply for licensure.
No. Both sections are administered and scored as one combined examination, including on retakes, so there is a single pass/fail outcome based on total correct answers.
Standard applicants must complete 60 hours of approved prelicensure education, including at least six hours in each of seven prescribed subjects plus 18 elective hours, and receive LARA approval to test before scheduling with PSI.