Contractors State License Services

American Flag Van Nuys, CA

Member since 2012

Contractors State License Services

Construction Trade, Contractor Licensing and Renewal, Electric Power Industry, Lead Paint Certification, Mold Certification, Solar Training

CSLS is the largest school in California devoted strictly to construction professionals. We have been in business since 1985, and over the years our schools have developed and maintained educational courses catering to the construction professional including EPA RRP certification, Solar PV Technical Sales, Solar Installation and Design, California Electrical Certification, Commercial and Residential Building code (ICC), Blue print reading, Estimating and more.

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4.8   reviews average 648 reviews
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Location/Date(s)Course 
Online Anytime CA Contractor In-School Licensing Online Anytime View
Online Anytime CA Contractor In-School Licensing Online Anytime with 6 Days Live Instruction View
CA - Orange Mold Remediation - CSLS View
CA - Orange Lead Renovator Certification Initial View
CA - Santa Clara Lead Renovator Certification Initial View
CA - San Marcos Lead Renovator Certification Initial View
Webinar ICC Commercial Building Inspector (B-2 Certified) Exam Prep View
CA - San Marcos Mold Remediation - CSLS View
CA - Van Nuys Lead Renovator Certification Initial View
CA - Daly City Lead Renovator Certification Initial View
CA - Santa Clara Blueprint Reading View
CA - Van Nuys Blueprint Reading View
Webinar Blueprint Reading View
CA - Orange Blueprint Reading View
CA - Clovis Lead Renovator Certification Initial View
CA - Sacramento Mold Remediation - CSLS View
CA - Santa Clara Mold Remediation - CSLS View
CA - Riverside Mold Remediation - CSLS View
CA - Sacramento Lead Renovator Certification Initial View
CA - Concord Lead Renovator Certification Initial View
Webinar ICC Residential Inspector (B-1 Certified) Exam Prep View
CA - San Diego Lead Renovator Certification Initial View
Webinar ICC Residential Inspector (B-1 Certified) Exam Prep View
CA - San Diego Mold Remediation - CSLS View
CA - Orange Lead Renovator Certification Initial View
CA - Concord Blueprint Reading View
CA - Santa Clara Lead Renovator Certification Initial View
Webinar Blueprint Reading View
Webinar Blueprint Reading View
CA - Van Nuys Blueprint Reading View
Webinar ICC Commercial Building Inspector (B-2 Certified) Exam Prep View
CA - Van Nuys Lead Renovator Certification Initial View
CA - Riverside Lead Renovator Certification Initial View
CA - Concord Mold Remediation - CSLS View
CA - Orange Mold Remediation - CSLS View
CA - Van Nuys Mold Remediation - CSLS View
CA - Santa Clara Blueprint Reading View
CA - Sacramento Lead Renovator Certification Initial View
Webinar California Electrical Contractor Exam Prep Webinar View
CA - Daly City Lead Renovator Certification Initial View
CA - San Marcos Mold Remediation - CSLS View
CA - San Marcos Lead Renovator Certification Initial View
CA - Daly City Mold Remediation - CSLS View
Contractors State License Services CSLS is the largest school in California devoted strictly to construction professionals. We have been in business since 1985, and over the years our schools have developed and maintained educational courses catering to the construction professional including <a href='/epa-lead-rrp-overview'>EPA RRP certification</a>, Solar PV Technical Sales, Solar Installation and Design, California Electrical Certification, Commercial and Residential Building code (ICC), Blue print reading, Estimating and more.
100% Verified Reviews
Below are the most recent student reviews for previous Contractors State License Services Courses. All reviews are from people who registered for and attended the course.
Average rating: Average Rating stars out of 5 stars ( 4.8 out of 5 stars - 648 648 student reviews)


Contractors State License Services
review userAndrew W.
5 stars out of 5 stars attended on September 20, 2026
I really enjoyed the Lead Renovator Certification Initial course. The instructor made the material fun and engaging, and... I really enjoyed the Lead Renovator Certification Initial course. The instructor made the material fun and engaging, and it was clear that they genuinely cared about the subject matter. I gained a lot of valuable knowledge and would definitely recommend this instructor and class to anyone looking for training.
Contractors State License Services
review userEsperanza L.
5 stars out of 5 stars attended on September 20, 2026
Made the class fun and I learned a lot ! Made the class fun and I learned a lot !
Contractors State License Services
review userJoaquin C.
5 stars out of 5 stars attended on September 13, 2026
Great Great
Contractors State License Services
review userDiego G.
5 stars out of 5 stars attended on September 6, 2026
Julio did such an amazing job explaining everything, I walked in not knowing anything and left with a lot of knowledge. Thank... Julio did such an amazing job explaining everything, I walked in not knowing anything and left with a lot of knowledge. Thank you Julio!
Contractors State License Services
review userJoseph I.
5 stars out of 5 stars attended on September 6, 2026
Julio was a great training combining boring info with humor and engagement which made the course fun. Julio was a great training combining boring info with humor and engagement which made the course fun.
Contractors State License Services
review userEyal B.
5 stars out of 5 stars attended on August 16, 2026
Our Instructor was very friendly, kind and informative he kept everything very professional while adding some humor. Very... Our Instructor was very friendly, kind and informative he kept everything very professional while adding some humor. Very recommended
Contractors State License Services
review userJames F.
5 stars out of 5 stars attended on August 16, 2026
Our instructor was very knowledgeable and helpful. He seemed genuinely interested in teaching the material to the students.... Our instructor was very knowledgeable and helpful. He seemed genuinely interested in teaching the material to the students. Great job.
Contractors State License Services
review userCristian P.
5 stars out of 5 stars attended on August 9, 2026
Very nice and fun class Very nice and fun class
Contractors State License Services
review userRyan V.
5 stars out of 5 stars attended on August 9, 2026
Great experience with a Very knowledgeable instructor. They answered all questions and gave detailed explanations. Great experience with a Very knowledgeable instructor. They answered all questions and gave detailed explanations.
Contractors State License Services
review userDavid S.
5 stars out of 5 stars attended on August 9, 2026
The instructor was very good. He made the class enjoyable and kept things light & fresh. The instructor was very good. He made the class enjoyable and kept things light & fresh.
Contractors State License Services
review userAnthony G.
5 stars out of 5 stars attended on July 26, 2026
The instructor Juan was a professional instructor he knows what he is teaching he made the class a enjoyment to go to... The instructor Juan was a professional instructor he knows what he is teaching he made the class a enjoyment to go to , If he could teach me he could teach anyone
Contractors State License Services
review userKeith A.
5 stars out of 5 stars attended on July 26, 2026
The Instructor was very professional in his presentation. The Instructor was very professional in his presentation.
Contractors State License Services
review userMaitreyi C.
5 stars out of 5 stars attended on July 12, 2026
My instructor, Daniel, was so knowledgeable. He was so patient with all our questions and appreciated that he kept the class... My instructor, Daniel, was so knowledgeable. He was so patient with all our questions and appreciated that he kept the class interactive. It was helpful to look at the course from the perspective of different attendees who all are in different trades. The class was organized well, put together in a way to teach us very well. Highly recommend.
Contractors State License Services
review userDavid A.
5 stars out of 5 stars attended on July 12, 2026
Overall very digestible. Daniel was great. Overall very digestible. Daniel was great.
Contractors State License Services
review userCesar A.
5 stars out of 5 stars attended on June 28, 2026
GREAT INSTRUCTOR GREAT INSTRUCTOR
Contractors State License Services
review userJaime M.
5 stars out of 5 stars attended on June 16, 2026
This course made a world of a difference in understanding the book better This course made a world of a difference in understanding the book better
Contractors State License Services
review userAlessandro D.
5 stars out of 5 stars attended on June 16, 2026
Clean , qualified, very good experience!!! Clean , qualified, very good experience!!!
Contractors State License Services
review userSteve H.
5 stars out of 5 stars attended on June 11, 2026
The class was very informative. The teacher was very knowledgeable, The class was very informative. The teacher was very knowledgeable,
Contractors State License Services
review userStuart M.
5 stars out of 5 stars attended on June 7, 2026
Great instructor. Great instructor.
Contractors State License Services
review userKAREN H.
5 stars out of 5 stars attended on May 22, 2026
I ENJOYED THE CLASS, THE INSTRUCTOR, AND THE PROCESS. VERY TRANSPARENT ON EVERYTHING. WORTH THE TIME AND MONEY. I ENJOYED THE CLASS, THE INSTRUCTOR, AND THE PROCESS. VERY TRANSPARENT ON EVERYTHING. WORTH THE TIME AND MONEY.
Contractors State License Services
review userJaein R.
5 stars out of 5 stars attended on May 17, 2026
I had taken a Lead Renovator Certification class about 15 years ago, but my certification had expired. Recently, I took... I had taken a Lead Renovator Certification class about 15 years ago, but my certification had expired. Recently, I took the Lead Renovator Certification class again through Zack Academy. The instructor explained everything very clearly and made the material easy to understand. He repeatedly reviewed the important parts, which helped me remember and understand the key information better. The class was well organized and informative. Even though some of the material was familiar to me from my previous certification, I learned a lot and appreciated the clear explanations. After completing the class, everyone received their certification. Overall, it was a very good experience, and I highly recommend this class to anyone who needs Lead Renovator Certification or renewal. Thank you, James
Contractors State License Services
review userantonio R.
5 stars out of 5 stars attended on May 17, 2026
Very good Very good
Contractors State License Services
review userDion P.
5 stars out of 5 stars attended on May 10, 2026
Joe is a very knowledgeable instructor I would definitely recommend this training. Joe is a very knowledgeable instructor I would definitely recommend this training.
Contractors State License Services
review userMike G.
5 stars out of 5 stars attended on May 10, 2026
Well done Well done
Contractors State License Services
review userBriana S.
5 stars out of 5 stars attended on May 10, 2026
Our Instructor Was Excellent! Our Instructor Was Excellent!
Contractors State License Services
review userAnthony R.
5 stars out of 5 stars attended on May 3, 2026
Both instructors were very personal able, Invested in my outcome. Both had personal experience which made them more relatable... Both instructors were very personal able, Invested in my outcome. Both had personal experience which made them more relatable to. Didnt just tech the book, seemed to be able to answer and guide on the in etween stuff. Very satisfied thanks
Contractors State License Services
review userAtour S.
5 stars out of 5 stars attended on April 26, 2026
Over all class was good Over all class was good
Contractors State License Services
review userDiego O.
5 stars out of 5 stars attended on April 12, 2026
Joe is a very good instructor with a vast amount of knowledge that he consistently shared during the prep classes. The format... Joe is a very good instructor with a vast amount of knowledge that he consistently shared during the prep classes. The format was easy to follow and I learned a good amount of information on navigating the IRC book. The materials I received were so helpful and much appreciated. I would recommend the Zack Academy for anyone interested in improving their knowledge base in the construction industry.
Contractors State License Services
review userNancy F.
5 stars out of 5 stars attended on April 5, 2026
The instructor was awesome.. He broke down the materials. He simplified the EPA regulations and made it so easy to understand. The instructor was awesome.. He broke down the materials. He simplified the EPA regulations and made it so easy to understand.
Contractors State License Services
review userTyrone D.
5 stars out of 5 stars attended on April 5, 2026
He was a great teacher! He was a great teacher!
Contractors State License Services
review userValentin K.
5 stars out of 5 stars attended on March 29, 2026
Great training and a very professional instructor. The class was interactive, engaging, and easy to follow. The material... Great training and a very professional instructor. The class was interactive, engaging, and easy to follow. The material was explained clearly and the time went by quickly. One of the best training experiences I’ve had!
Contractors State License Services
review userFelix L.
5 stars out of 5 stars attended on March 29, 2026
Great class Great class
Contractors State License Services
review userJianbin Z.
5 stars out of 5 stars attended on March 29, 2026
GREART! GREART!
Contractors State License Services
review userKevin R.
5 stars out of 5 stars attended on March 1, 2026
The experience was really good as I learned a lot of new things about mold. The professor was great he made me understand... The experience was really good as I learned a lot of new things about mold. The professor was great he made me understand a lot of things.
Contractors State License Services
review userTony L.
5 stars out of 5 stars attended on March 1, 2026
All good All good
Contractors State License Services
review userBlas M.
5 stars out of 5 stars attended on February 22, 2026
Julio was an amazing instructor! Not only did I learn a lot but we had fun as well. Julio made it possible for me to pass... Julio was an amazing instructor! Not only did I learn a lot but we had fun as well. Julio made it possible for me to pass my exam, thank you Julio!
Contractors State License Services
review userDavid K.
5 stars out of 5 stars attended on February 15, 2026
Great instructor - friendly, thorough, caring. Everything you can ask for. Great instructor - friendly, thorough, caring. Everything you can ask for.
Contractors State License Services
review userMartin M.
5 stars out of 5 stars attended on February 8, 2026
He was very accurate in teaching this course He was very accurate in teaching this course
Contractors State License Services
review userAndrew S.
5 stars out of 5 stars attended on February 8, 2026
Great class and very informative. Instructor was funny and had answers to every question. Very knowledgeable. Great class and very informative. Instructor was funny and had answers to every question. Very knowledgeable.
Contractors State License Services
review userMarcos G.
5 stars out of 5 stars attended on February 1, 2026
Instructor Julio was very knowledgeable and brilliant everything to understand Instructor Julio was very knowledgeable and brilliant everything to understand
Contractors State License Services
review userJeremy M.
5 stars out of 5 stars attended on February 1, 2026
Our I structure did a very good job of explaining things perfectly so we could pass the test. I could tell that he cared... Our I structure did a very good job of explaining things perfectly so we could pass the test. I could tell that he cared about everybody in the room having their opportunity to pass the test. He made sure that everybody understood as we went along. He pace the day very well. It’s a very long day, but it went by pretty quick when you think about it.
Contractors State License Services
review userSergio H.
5 stars out of 5 stars attended on January 25, 2026
Our instructor was very informative and was clear on each module. He made it clear and was very helpful. He made it where... Our instructor was very informative and was clear on each module. He made it clear and was very helpful. He made it where everyone was involved.
Contractors State License Services
review userLorene R.
5 stars out of 5 stars attended on November 23, 2025
Instructor was great! Kept the class engaged. Instructor was great! Kept the class engaged.
Contractors State License Services
review userJolin P.
5 stars out of 5 stars attended on November 16, 2025
Julio was a great instructor. Kept us informed, involved, and cracked jokes (which was really nice). The information received... Julio was a great instructor. Kept us informed, involved, and cracked jokes (which was really nice). The information received was well informed and easy to understand. It was really good that we got to do a mock up simulations, to see how real life would happen. I recommend anyone to use this class.
Contractors State License Services
review userSergei M.
5 stars out of 5 stars attended on November 16, 2025
This was an excellent course. The instructor was a great teacher who explained all the material clearly and professionally.... This was an excellent course. The instructor was a great teacher who explained all the material clearly and professionally. I understood everything, and as a result, I passed the exam on the first try.
Contractors State License Services
review userCarlos R.
5 stars out of 5 stars attended on November 9, 2025
Good experience and knowledge Good experience and knowledge
Contractors State License Services
review userNeyi O.
5 stars out of 5 stars attended on November 9, 2025
Excelente Excelente
Contractors State License Services
review userSkylyr L.
5 stars out of 5 stars attended on November 9, 2025
I absolutely recommend this instructor for his dedication to the subject and each of us attending. Giving us hands on learning... I absolutely recommend this instructor for his dedication to the subject and each of us attending. Giving us hands on learning opportunity and taking time to make sure each of us understands the subject makes this class instructors review a no brainer.
Contractors State License Services
review userJimmy A.
5 stars out of 5 stars attended on November 9, 2025
Best instructor I’ve had by far, very knowledgeable and enjoys what he does and makes it easy to learn. Best instructor I’ve had by far, very knowledgeable and enjoys what he does and makes it easy to learn.
Contractors State License Services
review userTerrell T.
4 stars out of 5 stars attended on November 7, 2025
The instructor was informative and knowledgeable. The instructor was informative and knowledgeable.
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