SC-RB Cheat Sheet 2026: One-Page Review of Must-Know Facts

Exam Basics at a Glance

If you're staring down test day and need the numbers in one place, here they are. The South Carolina Residential Builders Commission, under the Department of Labor, Licensing and Regulation (LLR), oversees licensure for the Residential Builder (RBB) classification. PSI Services LLC delivers the exam by computer at testing centers across the state.

The trade exam - the one most candidates mean when they say "SC-RB" - consists of 110 scored multiple-choice questions with a 360-minute time limit. You need 77 correct answers, or 70%, to pass. PSI may slip in 5 to 10 unscored pretest questions, but time spent on those doesn't count against your clock, so don't panic if the exam feels slightly longer than 110 questions.

For a deeper explanation of how the passing threshold is calculated and what it means for your margin of error, see the SC-RB Passing Score 2026 guide. If you want the full breakdown of every domain with subtopics, the SC-RB Exam Domains 2026 guide goes much deeper than this one-pager.

Domain Breakdown: What's Actually Tested

The trade exam is organized into four official domains. Memorize the question counts - they tell you exactly where to put your study hours.

Because General Building Construction is worth more than the other three domains combined, most candidates should allocate the majority of review time there. That doesn't mean ignoring the trade domains - missing too many electrical, HVAC, or plumbing questions can still sink your score. For guidance on realistically weighting difficulty against question count, check How Hard Is the SC-RB Exam? Complete Difficulty Guide 2026.

Open-Book References You Can Bring

The trade exam is open-book, which changes your prep strategy: you're not memorizing every code section, you're learning how to find answers fast under a clock. The official reference list includes:

• 2021 International Residential Code, South Carolina IRC, or IRC Commentary
• Carpentry and Building Construction (2010 or 2016 edition)
• The Contractor's Guide to Quality Concrete Construction, third edition
• Modern Masonry, ninth or tenth edition
• Building Component Safety Information (BCSI), 2013
• The Gypsum Construction Handbook, seventh edition

A silent, nonprinting, nonprogrammable calculator is permitted, which matters for the estimating and concrete-quantity math embedded in General Building Construction. If you're still assembling your bookshelf, our SC-RB Study Guide 2026 walks through how to tab each reference by domain so you're not flipping blindly during the exam.

Registration, Fees, and Eligibility Windows

Before you ever see a PSI screen, LLR has to approve your application. Key mechanics to keep on your radar:

• Application fee: $135
• Initial licensure fee: $220 (after passing)
• On-time renewal fee: $220, biennially by June 30 of even-numbered years
• Late renewal (2026-2028 cycle, July 1, 2026 - June 30, 2027): $270
• PSI exam charges: billed separately from state fees

Documentation requirements include at least one year of supervised experience under a licensed residential builder or general contractor, an experience affidavit, supporting work-history records, a credit report, and proof of lawful presence. Financial responsibility is typically established with a surety bond of at least $15,000 - remember, that's coverage, not what you pay in premium.

Once approved, you have one year to pass both required exams. You get three attempts; if you fail a third time, you must wait 12 months from your last attempt before trying again. For the full fee breakdown including what's separate versus bundled, read the SC-RB Certification Cost 2026 breakdown. If you're unsure whether you meet the base eligibility criteria, the SC-RB Requirements 2026 guide covers documentation in more detail, and SC-RB Exam Dates 2026 explains scheduling windows and deadlines.

Remember the licensing threshold this credential protects: covered residential builder projects exceeding $5,000 require licensure, and the residential scope covers buildings not exceeding three floors and 16 units. Know that scope cold - it shows up conceptually in General Building Construction questions about project applicability.

Don't Forget the Business and Law Exam

The trade exam gets most of the attention, but licensure requires passing the separate Business Management and Law examination too. It has 50 questions, a 120-minute limit, and a passing requirement of 34 correct (68%). It's also computer-delivered and open-book, drawing from NASCLA's Contractors Guide to Business, Law and Project Management, South Carolina Residential Builders, eighth edition.

Practicing business-and-law question formats is a different skill from trade-exam prep - expect contract, licensing, and project-management scenarios rather than construction methods. Build separate practice sessions for it rather than lumping it in with your trade review.

A One-Page Study Plan Built Around the Domains

Generic study techniques only help if they're mapped to the actual question distribution. Here's a compact schedule that respects the 74/12/12/12 split.

Notice that three of five weeks are dedicated to General Building Construction alone - that's proportional to its 74-question weight. Spaced repetition and timed drills work well here specifically because the open-book format rewards speed of retrieval, not raw memorization. For a broader first-attempt strategy that layers in these weekly blocks, see the SC-RB Study Guide 2026, and use our practice test platform to simulate the 360-minute trade exam under real time pressure.

Test Day Rules at the PSI Center

A few operational details trip up otherwise well-prepared candidates:

• Both exams are computer-delivered at PSI testing centers.
• Open-book means your approved references only - highlighted, underlined, and permanently tabbed. No handwritten notes, no removable tabs, no loose papers.
• Calculators must be silent, nonprinting, and nonprogrammable.
• Unscored pretest questions (5-10 of them) don't count against your time or score, but you won't know which ones they are, so treat every question seriously.

Walking in with a messy, over-tabbed reference set costs you minutes you don't have across 360 minutes and 110 questions. Streamline your tabs by domain before test day, matching the four official categories so navigation is instant.

For candidates weighing whether the overall investment of time and fees makes sense given career plans, Is the SC-RB Certification Worth It? Complete ROI Analysis 2026 and SC-RB Salary Guide 2026 provide additional context beyond this cheat sheet. And if you're just trying to confirm what the credential covers before diving into prep, What Is SC-RB? and SC-RB Certification are good starting points, alongside our home page practice resources.

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