Last updated: August 28th, 2026
Below are some tips to help you start a construction business in California. These steps provide a starting point for planning your business, choosing the right structure, registering with the appropriate agencies, and understanding the licenses and permits you may need.
The California Office of the Small Business Advocate (CalOSBA) provides resources for starting and operating a business in California. The California Small Business Development Centers also offer business training and mentoring.
One resource I recommend is CalGOLD. Enter your business type and location into the database, and it will help identify the state and local agencies, licenses, and permits that may apply to your business. I’ve used CalGOLD myself and found it extremely helpful.
If you plan to perform contracting work in California, remember that CSLB generally requires a contractor license when a project requires a building permit, uses additional workers, or has a total cost of $1,000 or more in labor and materials.
To increase your chance for success, take the time up front to explore and evaluate your business and personal goals. Then use this information to build a comprehensive and well-thought-out business plan.
The process of developing a business plan can help you think through issues you may not have considered yet. Your plan can also become a valuable tool when seeking financing and provide milestones for measuring your progress.
Take advantage of the free and low-cost counseling and training programs available to California business owners. Resources are available for business planning, access to capital, government contracting, business growth, and other areas.
California Small Business Development Centers can also provide regional assistance and mentoring.
It’s important to consider several factors when deciding on the location of your business. The ideal location will depend on the type of construction business you operate.
Ease of access, proximity to customers and suppliers, zoning requirements, signage regulations, storage needs, and local business requirements are all things to consider.
Every business needs capital at some point to start or expand. Funding may come from personal savings, financing, investors, business loans, or other sources.
Take the time to understand your startup costs and operating expenses before deciding how much financing your construction business will need.
When starting a business, you must decide which type of business entity is appropriate for you. Your business structure can affect taxes, liability, ownership, paperwork, and how your company is registered.
Common structures include sole proprietorships, partnerships, limited liability companies (LLCs), and corporations.
Whether you need to file a Fictitious Business Name (FBN), also known as a DBA, depends on your business structure and the name you use.
For example, a sole proprietor generally needs an FBN when operating under a business name that does not contain the owner’s surname. Corporations and LLCs may need an FBN when operating under a name other than the legal name registered with the state.
Fictitious business names are generally handled through the applicable city or county rather than the California Secretary of State.
Determine which federal, state, and local tax registrations apply to your business.
Not every business is required to obtain a Federal Employer Identification Number (EIN). The requirements depend on factors such as your business structure, whether you have employees, and the types of federal taxes you must file.
For example, corporations, partnerships, and LLCs generally need an EIN, as do businesses with employees. The IRS also allows some businesses that are not otherwise required to have an EIN to obtain one for banking or other business purposes.
The type of business you operate and where it is located will determine which licenses and permits you need.
Local business licenses may be issued by your city or county, while applicable business entities are registered through the California Secretary of State.
You can also use CalGOLD to identify state and local permitting and licensing agencies that may apply to your business.
For construction businesses, you should also determine whether you need a California contractor license through the Contractors State License Board. Generally, a CSLB license is required when a project requires a building permit, uses additional workers, or totals $1,000 or more in labor and materials.
If you plan to hire employees, make sure you understand your federal, state, and local responsibilities. These may include payroll taxes, workers’ compensation insurance, workplace safety requirements, employment eligibility documentation, and other employer obligations.
Businesses with employees are required to obtain an EIN and comply with applicable federal employment tax requirements.
Contractors License Guru would be happy to answer any questions you may have about how to start a construction business in California. I can also assist you with corporate formations and, of course, help you with obtaining your California Contractors License.
