- What the GARBC Actually Tests
- Exam Format and Registration Mechanics
- Domain-by-Domain Breakdown
- Building a Study Timeline That Matches the Blueprint
- Meeting Eligibility Before You Sit for the Exam
- Common Mistakes That Sink First-Time Candidates
- After You Pass: Licensing, Renewal, and CE
- Frequently Asked Questions
- The Residential-Basic exam is 80 questions in 200 minutes; Business and Law is a separate 50-question, 120-minute exam, each requiring 70%.
- General Code and Construction Knowledge is the single largest domain at 22.5%, followed by Carpentry at 20%.
- Both exams are open book under PSI's permanent-tab, no-loose-paper policy - tab your references before test day.
- You need two years of qualifying Residential-Basic experience and documented responsibility for two completed projects to even apply.
What the GARBC Actually Tests
The Georgia Residential-Basic Contractor License Exam (GARBC) is not a generic contractor trivia test. It is administered by PSI on behalf of the Georgia State Licensing Board for Residential and Commercial General Contractors, Residential Contractors Division, and it exists to confirm that a candidate can safely and competently supervise construction of detached one- and two-family residences and one-family townhouses up to three stories, along with their accessory structures. That scope statement matters more than most study guides admit - every question you see, from footing depth to roofing underlayment, is filtered through the lens of "does this apply to a house this license type covers?"
Because the license is scoped narrowly to residential construction, the exam leans heavily on the practical, day-to-day decisions a residential general contractor makes on a jobsite: reading foundation plans, sequencing framing, interpreting code minimums, and coordinating the associated trades that pour concrete, run wiring, or install HVAC beneath your general oversight. If you want a deeper dive into how each content area is weighted and tested, our GARBC Exam Domains 2026 guide breaks down all eight areas in detail.
Exam Format and Registration Mechanics
Licensure requires passing two separate computer-based exams:
- Residential-Basic exam: 80 questions, 200-minute time limit, 70% passing score.
- Business and Law exam: 50 questions, 120-minute time limit, 70% passing score.
PSI may embed unscored experimental questions in either exam as it evaluates future items, so don't panic if a question feels oddly worded or unfamiliar - it may not even count toward your score. Both exams are open book, but PSI enforces strict rules: references must use permanent tabs (no sticky notes or loose paper), and only a silent, nonprinting, nonprogrammable calculator is allowed at your station. If you show up with a binder full of loose printouts or an unapproved calculator, you risk delays or disqualification before you even start.
For a full walkthrough of exactly what score you need and how the 70% threshold is calculated on each exam, see our GARBC Passing Score 2026 breakdown. If you're still mapping out testing windows and application deadlines, the GARBC Exam Dates 2026 guide covers scheduling logistics in depth.
Key Takeaway
Build your open-book reference binder early. Tab it by domain - Sitework, Concrete, Masonry, Carpentry, Roofing, Code, Associated Trades, OSHA - so you can flip to the right section in seconds during a timed exam.
Domain-by-Domain Breakdown
The Residential-Basic exam blueprint spreads content across eight domains, but the weighting is far from even. Two domains - Carpentry and General Code and Construction Knowledge - together account for over 40% of the exam. Your study time should reflect that reality rather than being split evenly across all eight areas.
Domain 6: General Code and Construction Knowledge (22.5%)
This is the largest single domain and covers the regulatory backbone of residential construction: permitting, inspections, code minimums, and general construction practices that apply across every trade.
- Permitting and inspection sequencing
- Code requirements applicable to one- and two-family dwellings
- General construction standards and terminology
Domain 4: Carpentry (20%)
Framing, rough carpentry, and finish work make up the second-largest slice of the exam. Expect scenario-based questions tied to structural framing decisions on a typical residential build.
- Wall, floor, and roof framing systems
- Load paths and structural member sizing basics
- Finish carpentry standards
Domain 1: Sitework, Footings and Foundation (10%)
Covers site preparation, excavation, and the foundation systems that support the structures within Residential-Basic scope.
- Site grading and drainage basics
- Footing sizing and placement
- Foundation types for detached and townhouse construction
Domain 2: Concrete and Concrete Reinforcement (10%)
Tests knowledge of mix design basics, placement, curing, and reinforcement practices used in residential slabs, footings, and flatwork.
- Reinforcement placement and coverage
- Curing and finishing practices
Domain 5: Roofing (10%)
Covers roofing systems appropriate to Residential-Basic structures, including underlayment, flashing, and material selection.
- Roof sheathing and underlayment requirements
- Flashing details at penetrations and valleys
Domain 7: Associated Trades (12.5%)
Because a residential general contractor oversees subcontractors, this domain tests general awareness of plumbing, electrical, and mechanical systems as they interact with the structures you supervise.
- Coordination points between trades and general construction
- Basic awareness of subcontracted systems
Domain 8: OSHA Safety (8.75%)
Jobsite safety obligations for residential construction sites, including hazard recognition relevant to a general contractor's supervisory role.
- Fall protection and excavation safety basics
- General jobsite hazard recognition
Domain 3: Masonry (6.25%)
The smallest domain by weight, but still testable - covers masonry practices relevant to residential foundations, veneer, and accessory structures.
- Masonry materials and basic installation practices
Want the full picture on how difficult candidates find each of these areas relative to one another? Our How Hard Is the GARBC Exam guide compares candidate experiences across the domain list, and the GARBC Cheat Sheet condenses the must-know facts from all eight domains onto one page for quick review.
Building a Study Timeline That Matches the Blueprint
Because Carpentry and General Code and Construction Knowledge together make up nearly half the Residential-Basic exam, your study calendar should give those two domains the most repeated exposure - not just one week each, but recurring review sessions spaced across your prep period. A simple way to allocate a six-week runway looks like this:
Foundation Domains
- Sitework, Footings and Foundation
- Concrete and Concrete Reinforcement
Structural Focus
- Carpentry (first pass)
- Masonry
Systems and Envelope
- Roofing
- Associated Trades
Code and Safety
- General Code and Construction Knowledge (first pass)
- OSHA Safety
Second Pass on Heaviest Domains
- Carpentry review with scenario questions
- General Code and Construction Knowledge review
Full Simulation
- Timed practice under the 200-minute Residential-Basic limit
- Separate timed run of the 50-question Business and Law exam
Spacing your review of Carpentry and General Code and Construction Knowledge across two separate weeks (rather than cramming them once) uses spaced repetition without turning this into a generic study-skills lecture - the point is simply that these two domains carry enough combined weight to justify a second look before test day. For a broader strategy discussion, our GARBC Study Guide 2026 pulls the full preparation approach together in one place, and you can run realistic timed sessions using the practice exams on the main practice test platform.
Meeting Eligibility Before You Sit for the Exam
Passing the exam is only part of the licensure process. Before you're even approved to test, the Board requires:
- Minimum age of 21
- At least two years of qualifying Residential-Basic experience
- Demonstrated significant responsibility for two Residential-Basic projects completed within the two years before application
- Character and financial-responsibility standards
- At least $300,000 in general-liability insurance
- Workers' compensation coverage when required
These aren't formalities - the application review checks your project history and financial standing before your exam approval is even issued. Once approved, that approval is valid for one year and allows three sittings before reapplication rules kick in, so it pays to be genuinely exam-ready before you schedule your first attempt rather than treating the first sitting as a practice run. Our GARBC Requirements 2026 guide walks through each eligibility item in more depth, including how to document your qualifying experience.
Common Mistakes That Sink First-Time Candidates
Most repeat test-takers don't fail because they lack construction experience - they fail because they misjudge the exam's structure. A few recurring patterns:
- Treating both exams as one exam. The 80-question Residential-Basic exam and the 50-question Business and Law exam are scored separately, each requiring 70%. A strong score on one doesn't offset a weak score on the other.
- Under-tabbing reference materials. PSI's permanent-tab, no-loose-paper rule means you can't improvise on test day. Candidates who bring untabbed or disorganized references lose valuable minutes flipping pages under a 200-minute clock.
- Ignoring the smaller domains entirely. Masonry is only 6.25% of the exam, but skipping it outright still costs points that can be the difference between passing and falling short of 70%.
- Underestimating Carpentry's depth. At 20% of the exam, Carpentry questions go beyond basic terminology into framing sequences and structural decision-making - surface-level review isn't enough.
- Not tracking how experimental questions can appear. PSI may include unscored experimental items on either exam. A confusing question doesn't necessarily mean you're doing poorly - stay calm and keep moving.
If you're trying to gauge overall difficulty before committing to a study plan, the GARBC difficulty guide and GARBC Pass Rate 2026 data are worth reading together - one covers subjective difficulty, the other looks at what the numbers actually show.
After You Pass: Licensing, Renewal, and CE
Passing both exams doesn't end your obligations - it starts a renewal cycle. Georgia Residential-Basic licenses renew by June 30 of even-numbered years, and license holders must complete 3 continuing-education hours each year, reported through CE Broker. Missing this reporting requirement can jeopardize an otherwise valid license, so it's worth setting a recurring reminder well before the renewal deadline rather than scrambling at the last minute.
Once licensed, opportunities open up across residential general contracting roles - supervising crews on new home construction, additions, and renovations within the one- and two-family and townhouse scope. If you're weighing whether the time and cost investment is worthwhile relative to the work available, our Is the GARBC Certification Worth It guide and GARBC Certification Cost 2026 breakdown lay out the full financial picture, while GARBC Jobs covers the types of positions and employers that look for this license specifically.
Key Takeaway
Set your CE Broker reporting reminder now - 3 hours annually is a small requirement, but it's easy to forget between renewal cycles that only occur in even-numbered years.
Before your first sitting, run at least one full timed simulation of both exams separately using resources like the practice sets on our practice test site, so the 200-minute and 120-minute limits feel familiar rather than stressful on test day.
Frequently Asked Questions
The Residential-Basic exam has 80 questions with a 200-minute time limit, and you need a score of 70% to pass. It's separate from the Business and Law exam, which has 50 questions and a 120-minute limit.
Yes. Both the Residential-Basic and Business and Law exams are open book under PSI's rules, but references must use permanent tabs, loose paper is not allowed, and only a silent, nonprinting, nonprogrammable calculator is permitted.
General Code and Construction Knowledge (22.5%) and Carpentry (20%) together make up more than 40% of the Residential-Basic exam, making them the highest-priority domains for study time, though all eight domains are testable.
Exam approval is valid for one year and allows up to three sittings before reapplication rules apply. Use that window to reassess weak domains rather than repeating the same study approach.
Yes. Candidates must be at least 21 years old, have at least two years of qualifying Residential-Basic experience, and show significant responsibility for two Residential-Basic projects completed in the two years before applying.