Recent changes by the Contractors State License Board (CSLB) have introduced a new licensing requirement that impacts all general contractors working on manufactured homes. The new mandate, aimed at enhancing the safety and professionalism in installations, requires B-Gen contractors to obtain a C-47 – General Manufactured Housing contractor license. This article explains the changes and outlines what you need to do to comply.
New Licensing Requirement for Manufactured Housing Contractors
The CSLB has implemented a significant update to licensing regulations affecting contractors who work on manufactured homes. In alignment with federal regulations, it is now mandatory for all B-Gen contractors who deal with manufactured homes to secure a C-47 license. This new classification underscores the importance of specialized skills and knowledge in ensuring the safety of manufactured housing installations.
Training Program Requirement
To qualify for the C-47 license, contractors must demonstrate their proficiency through education. Specifically, the CSLB requires that all applicants for the C-47 license complete a Manufactured Housing Installation Program. As part of your license application, you must submit a “Certificate of Completion of Training,” issued by a trainer who is approved by the U.S. Department of Housing and Urban Development (HUD). This certification confirms that you have received training that meets federal standards and are equipped to handle the unique challenges of manufactured housing.
How to Comply with the New Regulations
For contractors seeking to obtain the new C-47 license, compliance involves several key steps:
- Complete the Required Training: Enroll in and complete a federally approved installer training course. Click here! Make sure the course is recognized by HUD to ensure its acceptance by the CSLB. Click here!
- Certificate of Completion: Upon completing the training, you will receive a Certificate of Completion. This certificate must be included with your application for the C-47 license.
- Locating a Qualified Trainer: Information about finding a HUD-approved training program can be found on HUD’s Manufactured Home Installation Program website. This resource is invaluable in locating approved trainers and programs in your area.
Need Help or Have Questions?
Navigating the application process for a new license can be complex. If you need assistance or have any questions about obtaining your C-47 license, do not hesitate to reach out for help. Consulting with a knowledgeable licensing expert can streamline the process and clarify any uncertainties.
Schedule a consultation today to ensure you meet all the requirements and continue your work without interruption.

Hi, I work for a non-profit. We install measures ranging from lightbulbs to windows and doors. Would replacing a door or window qualify as needing this license?
If the work is being done on property you don’t own, and the labor and materials are $1000 or more, then yes. A license would be required.
Hi, I’m a general contractor having a B license for 30 years and have been installing manufactured and modular homes during that time. Now, for a specific job I’m requireed to get an additional C-47 license. We’ve submitted the additional classification for the additional license and taken the HUD course. Is there an exam waiver that I might qualify for due to my experience?
Hello Gordon,
It’s possible. I’ll check with the cslb.
I checked with the CSLB, there would be no waiver available to you. You will need to take the C-47 exam.