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Exam Review

Key Facts: CSLB B-2 Exam

3.5 Hours

Time Limit

CSLB

$450

Application Fee

CSLB

4 Years

Required Experience

CSLB

Computerized

Format

PSI

16%

Safety Questions

CSLB Outline

The CSLB B-2 Residential Remodeling Contractor exam is a 3.5 hour computer-delivered test administered by PSI. It requires 4 years of journey-level experience, a $450 application fee, and covers planning, core and finish trades, exterior work, and Cal/OSHA safety regulations.

Sample CSLB B-2 Practice Questions

Try these sample questions to review concepts for the CSLB B-2 exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1On a residential remodeling architectural plan drawn at a scale of 1/4" = 1'-0", a room addition wall measures 5.5 inches on the drawing. What is the actual length of the wall on the job site?
A.22 feet 0 inches
B.13 feet 9 inches
C.16 feet 6 inches
D.27 feet 6 inches
Explanation: At a scale of 1/4 inch equals 1 foot, every 1/4 inch on the plan represents 1 foot of actual field distance (or 1 inch equals 4 feet). Multiplying 5.5 inches by 4 feet per inch yields an actual wall length of 22 feet. Plan scaling is a fundamental estimating skill for verifying material takeoffs against dimension lines.
2A contractor is framing a 60-foot long straight exterior wall with studs spaced 16 inches on center. Excluding corners and partition intersections, how many studs are required for the wall layout including a starter stud?
A.45 studs
B.46 studs
C.48 studs
D.60 studs
Explanation: To calculate stud count for a straight wall spaced 16 inches (1.333 feet) on center, divide the total length in feet by 1.333 and add 1 starter stud. Dividing 60 by 1.333 equals 45 layout spaces, plus 1 starter stud equals 46 studs total. Standard material estimating requires adding the end stud to the layout intervals.
3A concrete slab for a 20-foot by 15-foot room addition is specified to be 4 inches thick. Allowing a 10% waste factor, how many cubic yards of concrete should be ordered?
A.2.8 cubic yards
B.3.1 cubic yards
C.4.1 cubic yards
D.5.2 cubic yards
Explanation: First calculate volume in cubic feet: 20 ft x 15 ft x (4/12 ft) = 100 cubic feet. Convert to cubic yards by dividing by 27: 100 / 27 = 3.70 cubic yards. Adding 10% for waste (3.70 x 1.10) equals 4.07, which rounds up to 4.1 cubic yards. Accurately estimating concrete volume prevents costly cold joints and short-load delivery surcharges.
4Under California Contractors License Law, which project scope is permissible for a B-2 Residential Remodeling Contractor?
A.Contracting solely to replace a roof on an existing home without other trades
B.Contracting exclusively for HVAC system replacement on a single-family dwelling
C.Building a brand-new ground-up detached single-family residence from foundation to finish on a newly graded vacant lot
D.Executing a kitchen remodel involving structural framing, electrical alterations, and plumbing line relocation
Explanation: The B-2 classification is restricted to projects making improvements to existing residential wood-frame structures that require at least three unrelated building trades or crafts. A B-2 contractor cannot take prime contracts for single specialty trades (like roofing or HVAC only) nor build new detached single-family homes from the ground up (which requires a General Building 'B' license).
5Under California Business and Professions Code Section 7159, what is the maximum down payment a contractor may legally solicit or receive for a Home Improvement Contract (HIC)?
A.$1,000 or 10% of the contract price, whichever is less
B.$1,000 or 10% of the contract price, whichever is greater
C.20% of the total contract price regardless of total contract value
D.$2,500 flat fee prior to starting any physical job site work
Explanation: California Home Improvement Contract law strictly mandates that the down payment cannot exceed $1,000 or 10% of the total contract price, whichever amount is less. Soliciting or accepting a down payment greater than this limit is a misdemeanor offense subject to disciplinary action by the CSLB.
6A homeowner requests an upgraded quartz countertop mid-project during a kitchen remodel. Under California law, when must the Home Improvement Contract Change Order be executed?
A.At the conclusion of the overall project during final payment walk-through with the owner
B.In writing and signed by both parties before any work related to the change commences
C.Verbally on site, provided the contractor logs the cost in the job diary
D.Within 10 business days after the new countertop installation is completed
Explanation: California Business and Professions Code Section 7159.6 mandates that all change orders must be in writing and signed by both the contractor and homeowner before any work included in the change order begins. The document must clearly state the added or revised scope, price change, and impact on the project completion schedule.
7How many board feet of lumber are contained in twenty 2-inch by 8-inch joists that are each 12 feet long?
A.160 board feet
B.240 board feet
C.320 board feet
D.480 board feet
Explanation: Board feet is calculated using the formula: (Pieces x Nominal Thickness in inches x Nominal Width in inches x Length in feet) / 12. For this estimate: (20 x 2 x 8 x 12) / 12 = 320 board feet. Accurately computing board footage is essential for lumber material pricing.
8A remodeler is installing drywall on the walls and flat ceiling of a room measuring 12 feet wide by 16 feet long with 8-foot high walls. Assuming no deduction for openings and adding 10% for waste, how many 4-foot by 8-foot drywall sheets are needed?
A.16 sheets
B.18 sheets
C.20 sheets
D.22 sheets
Explanation: Ceiling area = 12 x 16 = 192 sq ft. Wall perimeter = 2(12 + 16) = 56 linear ft. Wall area = 56 x 8 = 448 sq ft. Total gross area = 192 + 448 = 640 sq ft. Each 4x8 sheet covers 32 sq ft. Base sheets = 640 / 32 = 20 sheets. Adding 10% waste (20 x 1.10 = 22) yields 22 sheets required.
9Under the California Residential Code (CRC), when is a residential remodeling project required to submit engineered structural calculations with the permit application?
A.When removing a load-bearing wall replaced by a beam that does not meet prescriptive span tables
B.When replacing existing surface finish materials with like-for-like non-structural tile
C.When painting exterior stucco and replacing existing window trim on a single-family home
D.When replacing a standard residential water heater in the same location without structural modifications
Explanation: When structural alterations deviate from prescriptive code tables—such as installing engineered steel or glue-laminated beams to span large openings after load-bearing wall removal—plans and calculations stamped by a California licensed civil or structural engineer are required for permit issuance.
10A remodeler measures the footprint of a simple gable roof as 30 feet by 40 feet. If the roof has a 4:12 pitch (slope multiplier factor of 1.054), how many squares of roofing material are required including a 10% waste factor? (1 square = 100 sq ft)
A.12.6 squares
B.13.9 squares
C.15.4 squares
D.16.8 squares
Explanation: Footprint area = 30 x 40 = 1,200 sq ft. Actual sloped roof area = 1,200 x 1.054 = 1,264.8 sq ft. Adding 10% waste factor = 1,264.8 x 1.10 = 1,391.28 sq ft. Dividing by 100 sq ft per square equals 13.91 squares, which rounds to 13.9 squares.

About the CSLB B-2 Exam

The CSLB B-2 exam tests the knowledge and skills necessary for the residential remodeling trade, focusing on planning, core and finish trades, job site prep, exterior remodeling, and safety.

Exam sponsor: California Contractors State License Board (CSLB). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Question count not published by the exam provider

Time Limit

3.5 hours

Passing Score

Disclosed at test site

Exam / Certification Fees

$450 application fee

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

15%

Planning and Estimating

Evaluating project sites, reading blueprints, and estimating materials and labor.

13%

Job Site Preparation

Demolition, site layout, and protecting existing structures and utilities.

25%

Core Trades Remodeling

Rough framing, plumbing, electrical, and HVAC components in remodeling.

18%

Finish Trades Remodeling

Drywall, painting, flooring, cabinetry, and finish carpentry.

13%

Exterior Remodeling

Roofing, siding, windows, doors, and exterior finishes.

16%

Safety

Cal/OSHA regulations, hazardous materials, and safe work practices.

Preparing for the CSLB B-2 Exam

What You Need to Know

  • Passing score: Disclosed at test site
  • Assessment: Question count not published by the exam provider
  • Time limit: 3.5 hours
  • Exam / certification fees: $450 application fee Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

CSLB B-2: Suggested Study Strategy

1Review the California Residential Code (CRC) thoroughly.
2Understand basic estimating formulas for area, volume, and material calculations.
3Familiarize yourself with Cal/OSHA safety regulations specific to residential construction.
4Practice reading and interpreting residential blueprints.
5Know the sequence of remodeling operations from demo to final finish.

Frequently Asked Questions

What are the requirements for a B-2 license?

You need 4 years of journey-level experience within the past 10 years, and you must pass both the Law and Business exam and the B-2 trade exam.

What is the format of the B-2 exam?

It is a 3.5 hour computer-delivered multiple-choice exam administered by PSI at various testing centers in California.

How much does it cost to apply?

The application fee is $450. Additional fees apply for license activation after passing.

What topics are covered on the B-2 exam?

Topics include Planning and Estimating (15%), Job Site Preparation (13%), Core Trades (25%), Finish Trades (18%), Exterior (13%), and Safety (16%).

What is the difference between a B and a B-2 license?

A B-2 is limited to projects that make improvements to, on, or in an existing residential wood frame structure, requiring at least three unrelated building trades.