Mississippi Residential Builder Exam: Complete 2026 Study Guide
So you want your MS Residential Builder license. That's a real career milestone — it opens doors to legally contract residential construction projects across the state and builds your professional credibility with clients. But first, you have to pass the PSI exam. The good news: it's open book, it's 80 questions, and you get three full hours. With the right preparation, this exam is absolutely passable. This guide covers everything you need to know — exam format, topic breakdown, sample questions, study materials, and registration steps. Start here, then take our free practice exam to gauge where you stand.
Mississippi Residential Builder Exam Overview
The Mississippi Residential Builder exam is administered by PSI and consists of 80 scored questions. You have 180 minutes (3 hours) to complete it. To pass, you need a score of at least 70%, which means getting 56 out of 80 questions correct.
The exam is open book — you can bring your own reference materials (more on that below). It's delivered at a PSI testing center, and you'll work through multiple-choice questions across nine topic areas tied directly to the IRC, OSHA standards, and several trade-specific references.
The fee is $120 per attempt, whether it's your first time or a retake. That fee is non-refundable and non-transferable, so come prepared. Once approved by the Mississippi Contractor Licensing Board, you have 6 months to pass. If you don't pass within that window, you'll need to reapply with the Board. You can check details and register through the official exam bulletin or the state licensing website.
What the Mississippi Residential Builder Exam Covers
Nine topic areas appear on the exam. Here they are ranked by how heavily they're weighted — focus your study time accordingly.
Estimating, Plan Reading and General Code Requirements — 18 items
This is the biggest chunk of the exam. Expect questions on building permits, construction documents, inspector authority, required inspections, certificates of occupancy, and minimum room dimensions. Know the code inside and out here.
Carpentry — 15 items
The second largest topic. Questions cover floor joist spans, wall framing, stud sizes, header and girder spans, and wall bracing methods. This is hands-on stuff most builders know — but the code specifics matter.
Site Work, Footings and Foundations — 13 items
Footing depth, soil bearing capacity, drainage, foundation wall types — this section rewards anyone who's spent time reading the IRC foundation chapters carefully.
Concrete and Concrete Reinforcement — 8 items
Mixture proportioning, slump tests, reinforcement grades, concrete cover, and bar splicing. Lean on The Contractor's Guide to Quality Concrete Construction for this one.
Roofing — 7 items
Minimum slopes, underlayment types, flashing installation, fire classifications, and fastener requirements. A relatively small section, but specific.
Associated Trades and Drywall — 6 items
Gypsum board thickness, fastener spacing, vapor retarder classes, and tile backer requirements. Details matter here.
OSHA Safety — 5 items
Fall protection, personal fall arrest systems, guardrail specs, and employer responsibilities under 29 CFR 1926. Five questions, but easy points if you study the standard.
Masonry — 4 items
CMU types, mortar proportions, grout placement, and seismic reinforcement. Fewer questions, but don't skip it.
Licensing — 4 items
Permit procedures, exemptions, validity, and building official authority. These overlap somewhat with the Estimating/Code section and are often straightforward.
Sample Questions
Here's a look at the style and difficulty of questions you'll encounter. Can you answer these? No peeking — try the free practice exam to check your knowledge.
Question 1 (Estimating, Plan Reading and General Code Requirements)
What is the definition of 'ceiling height' as it applies to residential construction?
- A) The clear vertical distance from the finished floor to the finished ceiling
- B) The distance from the top of the floor joists to the top of the ceiling joists
- C) The distance from the subfloor to the bottom of the ceiling joists
- D) The vertical distance from grade to the highest point of the roof surface
This question tests whether you know the IRC's precise definition — not just a common-sense interpretation. Code language matters.
Question 2 (Masonry)
You are a residential builder overseeing the grouting of a reinforced loadbearing concrete block wall. The mason has poured grout into the wall cores in lifts up to 12 inches high. How should the grout be consolidated at this pour height?
- A) Only by mechanical vibration
- B) By rodding or vibration
- C) Only by rodding
- D) No consolidation is required for pours under 12 inches
This is a practical field scenario. You need to know consolidation rules by lift height — the kind of detail Modern Masonry covers.
Question 3 (Carpentry)
What is the minimum diameter of anchor bolts required to attach wood sill plates to a continuous concrete foundation?
- A) 1/2 inch
- B) 3/4 inch
- C) 3/8 inch
- D) 5/8 inch
Straightforward, but only if you've looked it up. Don't assume from field experience — check the code.
Question 4 (Carpentry)
A stud in an exterior bearing wall may be notched to a maximum depth of what percentage of the stud depth?
- A) 10 percent
- B) 33 percent
- C) 40 percent
- D) 25 percent
Framing rules like this appear frequently. The IRC is specific about notching and boring limits.
Question 5 (Site Work, Footings and Foundations)
A stabilized construction entrance is generally required on certain residential building projects. What is its primary purpose?
- A) To prevent unauthorized vehicles from entering the construction site
- B) To provide a level surface for delivery trucks to park on
- C) To reduce mud and sediment transfer from the construction site onto public roads
- D) To establish a permanent driveway for the completed home
This one tests site management knowledge — a practical scenario with a code-based answer.
What Types of Questions to Expect
Our full practice question pool includes 787 questions across all nine topics. Here's a breakdown of what each topic tests:
- Site Work, Footings and Foundations: covering footing sizing based on soil capacity, frost depth requirements, drainage slopes, and foundation wall thickness.
- Concrete and Concrete Reinforcement: on mix design, field testing (slump, air content, compressive cylinders), rebar grades, cover requirements, and splice methods.
- Masonry: testing CMU and mortar types, grout lift procedures, wall thickness minimums, and seismic reinforcement.
- Carpentry: covering joist and header spans, stud sizing, floor sheathing grades, anchor bolt requirements, and wall bracing panel construction.
- Associated Trades and Drywall: on gypsum board installation, plaster types, vapor retarder classes by climate zone, and tile backing materials.
- Roofing: covering slope requirements by cover type, underlayment standards, flashing details at valleys and chimneys, fire classifications, and fastener specs.
- Estimating, Plan Reading and General Code Requirements: on permits, plan review, inspection sequences, certificate of occupancy, and minimum habitable space requirements.
- OSHA Safety: on fall protection trigger heights, personal fall arrest system components, guardrail strength requirements, and competent person responsibilities.
- Licensing: covering permit applications, exempt work, permit expiration, and building official enforcement authority.
Study Materials for the Mississippi Residential Builder Exam
This exam is open book, and the references you bring are the same ones it's built around. Knowing where to find answers fast is half the skill.
Required references:
- IRC 2021 — The foundation of the exam. Most of your points come from this book. Tab it heavily.
- OSHA 29 CFR 1926 — Required for the Safety section. Smaller section, but fast points if your book is tabbed.
- The Contractor's Guide to Quality Concrete Construction — Covers mix design, field testing, and reinforcement details for the Concrete section.
- Modern Masonry — Brick, Block, and Stone (9th edition). Your reference for CMU, mortar, and grout questions.
- BCSI: Guide to Good Practice for Handling, Installing, Restraining, and Bracing of Metal Plate Connected Wood Trusses — Needed for truss-related carpentry questions.
- Pipe and Excavation Contracting — Covers site work and excavation topics.
Highly recommended supplies:
- Sharpie Tank Highlighters — Bright, smear-resistant, and they last. Color-code by topic across your references.
- Redi-Tag Permanent Colored Tabs — 100 tabs in 5 colors. Tab every major section in every book. On exam day, you're flipping to answers, not searching for them.
Study Tips for the Mississippi Residential Builder Exam
Prioritize by weight. Estimating and Code (18 items) and Carpentry (15 items) together make up over 40% of the exam. Master those two sections before spending equal time on Licensing (4 items) or Masonry (4 items).
Tab everything. You can highlight, underline, and tab your references — but you cannot write in them. Build a thorough index system before exam day. On test day, speed matters; you need to locate answers in under a minute.
Practice in exam conditions. Our full practice exam mirrors the real PSI format — 80 questions, 180 minutes, same topic breakdown. Practicing that way now means no surprises on test day. Start with the free practice exam to get a feel for the format, then move to the full paid exam for serious prep and detailed score breakdowns by topic.
Manage the clock, don't fight it. Three hours for 80 questions is generous — that's 2 minutes and 15 seconds per question. Don't let early finishers rattle you. Work at a steady pace, flag anything you're unsure about, and review before you submit. Finishing early isn't the goal; finishing accurately is.
Use your practice scores to guide your review. The full practice exam gives you a topic-by-topic score breakdown. If you're scoring 60% in Concrete but 90% in OSHA, that tells you exactly where to spend your remaining study time.
You've Got This
The Mississippi Residential Builder exam is challenging, but it's built around references you can bring into the room. Good preparation — studying the right topics, tabbing your books, and practicing in exam format — makes the difference. Start with our free practice exam to see where you stand, then use the full paid exam to drill down on weak areas before your test date. Your license is closer than you think.