Choosing the right general contractor is the single biggest factor in whether your project succeeds. Verify the license and insurance, check recent references, compare itemized written estimates, and never pay for the full job up front. Here is the full checklist.
The 7-step checklist
1. Verify the Contractor's License
In California, contractors on projects of $500 or more must be licensed by the Contractors State License Board (CSLB). Ask for the license number and verify it is active and in good standing. Vertex General Contractor holds California license #1108837.
2. Confirm Insurance and Bonding
A reputable contractor carries general liability insurance and, if they have employees, workers' compensation. This protects you from liability if something is damaged or someone is injured on your property. Ask for proof of coverage before work begins.
3. Check Experience and References
Look for a track record with projects like yours. Read recent reviews, ask for references, and, if possible, look at completed work. A contractor experienced with local Bay Area permitting and site conditions will save you time and money.
4. Get Detailed, Itemized Estimates
Collect written estimates from more than one contractor and compare like for like. A good estimate breaks down materials, labor, timeline, and allowances. Be cautious of a bid that is dramatically lower than the rest, as it often signals missing scope or lower-quality materials.
5. Read the Contract Carefully
A solid contract spells out the scope of work, materials, total price, payment schedule, start and completion dates, and how changes are handled. Everything you agreed to verbally should appear in writing.
6. Understand the Payment Schedule
Payments should be tied to milestones, not paid entirely up front. In California, the law limits the down payment a contractor can require. A reasonable schedule protects both you and the contractor.
7. Judge Communication and Professionalism
Notice how quickly and clearly a contractor responds from your first call. Clear communication during the bidding stage is a strong predictor of how the project itself will go.
Quick questions to ask any contractor
Are you licensed and insured? Can I see the license number? Who will be on site day to day? What is the payment schedule? What is the projected timeline? How do you handle change orders and unexpected issues?
Vertex General Contractor is a licensed and insured general contractor serving the San Francisco Bay Area, including Marin and Sonoma County. We provide free, itemized estimates and clear contracts. Learn more about our team or call (415) 727-6637.
Frequently Asked Questions
How do I verify a contractor's license in California?
California contractors are licensed by the Contractors State License Board (CSLB). Ask for the license number and check that it is active and in good standing before hiring. Vertex General Contractor holds California license #1108837.
How many estimates should I get before hiring a contractor?
Getting two or three written, itemized estimates is a good practice. Compare them like for like on scope, materials, and timeline. Be cautious of a bid that is far lower than the others, as it often means missing scope or lower-quality materials.
How much should I pay a contractor up front?
You should never pay for the entire project up front. Payments should be tied to milestones, and California law limits how large a down payment a contractor can require. A reasonable, milestone-based schedule protects both parties.
What should be included in a contractor's contract?
A good contract includes the scope of work, materials, total price, payment schedule, start and completion dates, and how change orders are handled. Anything agreed verbally should also be captured in writing.
Why hire a local Bay Area contractor?
A local contractor knows regional permitting requirements, common site conditions such as sloped lots in Marin, and reliable local suppliers. That local knowledge helps prevent delays and unexpected costs.