How to Verify a Contractor’s CSLB License in California — Step-by-Step

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Quick Answer: To verify a contractor’s CSLB license in California: go to cslb.ca.gov, click “Check a License,” and enter the license number or contractor name. Verify: (1) license status is “Active,” (2) bond is current ($15,000 minimum for residential, $25,000 for commercial), (3) workers’ compensation insurance is on file, (4) no “disciplinary action” or “suspension” flag, (5) the license classifications match the work (Class B = General Building Contractor). Quartz Construction & Remodeling’s license: CSLB #1003436 — you can verify it right now at cslb.ca.gov.

CSLB License Lookup — Step-by-Step

Helpful Resources:

Step 1: Go to cslb.ca.gov and click “Check a License” in the top navigation
Step 2: Enter the contractor’s license number (e.g., “1003436”) or business name
Step 3: Verify Status = “Active” — any other status means don’t hire
Step 4: Check the “Bond” section — must show a current surety bond
Step 5: Check “Workers’ Compensation” — must show current certificate or “Self-Insured” status
Step 6: Review “Classifications” — Class B is general building contractor; specialty contractors have A (civil) or C (specialty) classifications
Step 7: Check “Disciplinary Actions” — any flag here is a serious warning sign

Question: What is CSLB and why does it matter? The California Contractors State License Board (CSLB) licenses and regulates construction contractors in California. A CSLB license requires: passing trade and law exams, 4+ years of journeyman experience, a $15,000–$25,000 surety bond, workers’ compensation insurance, and a background check. Hiring an unlicensed contractor in California means: no workers’ comp coverage (you’re liable if a worker is injured on your property), no lien protection, no bond to cover incomplete work, and no CSLB mediation if disputes arise. Under California Business & Professions Code §7028, hiring an unlicensed contractor for work over $500 violates California law — the contractor, not you, can be prosecuted, but you bear all civil liability.

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"Quartz Construction did an amazing job on our kitchen remodel. The team was professional, on time, and the results exceeded our expectations. Highly recommend to any Bay Area homeowner!"

— Michael T. | November 15, 2025

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"We hired them for a bathroom remodel in our San Jose home. From permitting to final walkthrough, everything was handled perfectly. The tile work is stunning. 5 stars without hesitation."

— Sarah L. | October 28, 2025

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"Just finished our ADU garage conversion. The project came in on budget and on schedule — rare in the Bay Area! The rental income already started. Could not be happier with Quartz Construction."

— David R. | December 2, 2025

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Google Reviews — What Our Clients Say

      
   Quartz Construction
   65 Google reviews 
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       Posted on Google  
   
   Perry Finch 
 
 
 
 Trustindex verifies that the original source of the review is Google. We’re so happy with the work Hila and her team did on our home addition. The new space flows beautifully with the existing structure, and the quality is clear in every finish. Finished on schedule and stress-free.
  
 
      Posted on Google  
   
   Joy Ruther 
 
 
 
 Trustindex verifies that the original source of the review is Google. Working with Ohad on our full home remodel was an incredible experience. He helped us through every decision and made sure everything turned out exactly how we envisioned. The team was easy to communicate with and super detail-focused. We still can’t believe how beautiful our home looks!
  
 
      Posted on Google  
   
   Ajay Mukhopadhyay 
 
 
 
 Trustindex verifies that the original source of the review is Google. We recently worked with Quartz Construction (Owner: Ohad) for a construction project to remodel our Bathroom
and we couldn’t be more pleased with the results. From start to finish, their team demonstrated professionalism, and exceptional craftsmanship.

They maintained clear communication throughout the project, kept us informed of progress and any potential changes, and delivered everything on time and within budget. Their quality of work is outstanding — every detail was handled with care and precision.

What stood out most was their commitment to customer satisfaction. They were responsive to our questions, respectful of our space, and ensured that the final outcome matched our vision perfectly.

If you're looking for a reliable, skilled, and trustworthy construction contractor, I wholeheartedly recommend Quartz Construction ( Ohad and his team) .They exceeded our expectations in every way.

Ajay
  
 
      Posted on Google  
   
   debbie curley 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had a fantastic experience working with Quartz Construction And Remodeling. Ohad Maloul the owner was professional communicative and a pleasure to work with from start to finish. His team repaired and painted my backyard pergola and the quality of their work was truly excellent. They were always on time, friendly and responsive to any questions I had throughout the process. I appreciated the clear communication and attention to detail. I’m excited to work with Ohad and his team on future projects and highly recommend them to anyone looking for reliable, high-quality construction or remodeling services.
  
 
      Posted on Google  
   
   Harry Lewis 
 
 
 
 Trustindex verifies that the original source of the review is Google. Hila managed our balcony addition project with care and precision. The design complements our home perfectly, and the build quality is outstanding. She communicated every step and made the whole process easy. We’re thrilled with the result!
  
 
      Posted on Google  
   
   Qi Lei 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had the chance to work with Ohad and his construction team on a recent home project, and I was really impressed. Ohad is professional, easy to communicate with, and genuinely cares about the quality of the work. The crew showed up on time, kept the work area clean, and finished the job on schedule. It’s hard to find contractors who are reliable and transparent these days, but Ohad delivered on everything he promised. Would definitely recommend if you’re looking for someone who takes pride in their work and keeps things straightforward.
  
 
      Posted on Google  
   
   Boris Tyron 
 
 
 
 Trustindex verifies that the original source of the review is Google. We’re so happy with the work Quartz Construction did on our backyard. Ohad’s team designed and built a gorgeous deck and patio that turned the area into a dream space. The quality and detail are fantastic. Highly recommend!
  
 
      Posted on Google  
   
   Gloria Collin 
 
 
 
 Trustindex verifies that the original source of the review is Google. Quartz Construction built the most beautiful pergola in our backyard, thanks to Ohad. He was easy to work with, listened to our needs, and delivered a structure that’s both stylish and durable. We now have a shaded space where we can relax and entertain guests.
  
 
      Posted on Google  
   
   Dustin Walsh 
 
 
 
 Trustindex verifies that the original source of the review is Google. They built a beautiful, durable pergola that fits our outdoor space perfectly. Hila paid close attention to both style and quality. We now have the perfect spot for lounging, gatherings, and enjoying every season.
  
 
      Posted on Google  
   
   Paul Wilins 
 
 
 
 Trustindex verifies that the original source of the review is Google. We feel incredibly lucky to have worked with Hila. She made the ADU process simple and stress-free, handling everything with care and professionalism. The final space is perfect—efficient, elegant, and exactly what we hoped for. Big thanks to her and the whole crew!
  
 
  
  
 
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