Do I need a California business license to do contracting work?
The short answer is yes, but the question is actually two questions in one. California requires a contractor’s license from the Contractors State License Board (CSLB) for any project valued at $500 or more in combined labor and materials. Separately, you need a general business license from the city where your business is based. These are different requirements issued by different agencies, and you need both to operate legally.
The CSLB license is the big one. California has three main classification types. Class A is for general engineering contractors. Class B is for general building contractors. Class C covers specialty trades like electrical (C-10), plumbing (C-36), HVAC (C-20), painting (C-33), and about 40 other specialties. You need to pass a trade exam and a law/business exam, show at least four years of journey-level experience, carry a $25,000 contractor bond, and maintain workers’ comp insurance if you have employees.
The local business license is simpler but easy to overlook. In Long Beach, for example, you register with the city and pay an annual fee based on your business type and gross receipts. If you do work in multiple cities across the South Bay or Greater LA, some of those cities may require you to register there as well. The rules vary by municipality, so check each city where you regularly take on projects.
Operating without a CSLB license on jobs over $500 is a misdemeanor in California. Penalties include fines up to $15,000, and you can’t enforce a contract or file a mechanics lien for unlicensed work. The CSLB actively runs sting operations, so enforcement is real.
All of these licensing costs, including exam fees, bond premiums, insurance, and local business license renewals, are fully deductible business expenses. The problem is that many construction and contracting businesses don’t track these expenses properly throughout the year and end up missing legitimate deductions when tax season arrives.
Beyond licensing, California also requires you to register with the state for income tax, and with the EDD if you have employees. If you’re pulling permits on jobs, some building departments will verify your CSLB license status before issuing them, so keeping your license active and your bond current is not optional.
If you’re getting your contracting business set up or making sure you’re compliant, working with a CPA for construction businesses from the start helps you structure things correctly. That includes choosing the right entity type, understanding your tax obligations, and making sure expenses like licensing and bonding get tracked so they actually show up as deductions on your return.
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More Questions
How much does payroll processing cost for a small business?
Most small businesses pay between $40 and $200 per month for payroll processing, depending on employee count and how much of the work they handle themselves. The real cost depends on whether you use software or outsource it entirely.
Read answerWhat's the difference between an accountant and a bookkeeper?
A bookkeeper handles day-to-day financial recording like categorizing transactions and reconciling accounts. An accountant uses those records for tax prep, compliance, and strategic planning. Most trades businesses need both.
Read answerI'm behind on my bookkeeping—where do I start?
Start by gathering your bank and credit card statements for the months you've missed. Figure out how far behind you are, then work forward from the last month your books were accurate. Prioritize anything tied to upcoming tax deadlines first.
Read answerHow do I deal with customers who pay late?
Prevent late payments with clear terms, upfront deposits, and immediate invoicing. When customers do pay late, use aging reports to catch it early and follow a consistent collection process so nothing slips through the cracks.
Read answerHow do I pay quarterly taxes to the IRS?
Make estimated tax payments four times a year using IRS Direct Pay or EFTPS. The due dates are April 15, June 15, September 15, and January 15. Base each payment on your expected annual tax liability or your prior year's total tax.
Read answerAre contractor tools and equipment tax deductible?
Yes. Tools and equipment used for your trade are fully deductible. Smaller items can be expensed immediately, while larger equipment can be deducted through Section 179 or depreciated over time.
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