Hiring a general contractor is one of the most consequential decisions a homeowner makes. The right contractor delivers your project on time, on budget, and built to last. The wrong one can cost you months, tens of thousands of dollars, and a half-finished project. In Agoura Hills — where homes are valuable and projects often involve hillside lots, custom finishes, or multi-trade work — choosing carefully matters even more. Here is how to do it right.
Start With the License — and Verify It Yourself
In California, any contractor doing work over $500 in labor and materials must hold a valid Contractors State License Board (CSLB) license. For general building work, that means a B license; specialty work like plumbing or HVAC requires the corresponding C-classification.
Do not take a license number on faith. Look it up yourself on the CSLB website and confirm three things: the license is active, it covers the classifications your project needs, and the name on the license matches the company you are hiring. Also check for any disciplinary actions. This takes five minutes and is the single most effective filter against unlicensed operators.
We hold CSLB license #1138550 covering General Engineering (A), General Building (B), Plumbing (C-36), and HVAC (C-20) — and we encourage every homeowner to verify it.
Insurance: The Other Non-Negotiable
A legitimate contractor carries general liability insurance and workers' compensation for their employees. Ask for a certificate of insurance and confirm it is current. If an uninsured worker is injured on your property, the liability exposure can land on you. This is not paperwork for paperwork's sake — it is your financial protection.
Red Flags That Should Stop You Cold
No license or "we work under someone else's." If they cannot show you their own active license, walk away.
Demanding large deposits. California law caps home-improvement deposits at 10% of the contract price or $1,000, whichever is less. Any contractor asking for half down on a residential project is either ignorant of the law or ignoring it — neither is acceptable.
No written contract. A handshake is not a contract. Legitimate contractors provide a detailed written agreement covering scope, materials, timeline, payment schedule, and warranty.
Pressure tactics. "This price is only good today" is a sales trick, not a business practice. A reputable contractor gives you time to decide.
No local references. Established contractors have a trail of completed local work and clients willing to talk about it. If they cannot produce any, ask yourself why.
Cash-only or off-the-books offers. If a contractor offers a discount for cash with no contract, they are asking you to give up every protection the law provides.
Green Flags Worth Looking For
On the positive side, look for a contractor who communicates clearly, provides a detailed written estimate (not a one-line number), has a physical business address, and answers your questions directly instead of deflecting. Multi-trade capability matters too — a contractor who self-performs plumbing, HVAC, and electrical coordination keeps your project under one accountable roof instead of a chain of subcontractors pointing fingers.
Also pay attention to how they handle your questions about permits. A good contractor pulls permits as a matter of course and explains the process. One who suggests skipping permits is telling you everything you need to know.
The Estimate Meeting: What to Expect
A professional contractor visits your Agoura Hills property, listens to what you want, asks questions about how you use the space, and follows up with a detailed written proposal. Be wary of anyone who prices a major project sight unseen or pressures you to sign on the spot. Compare bids on scope, not just price — the cheapest bid with the thinnest scope is rarely the best value.
Hire Once, Hire Right
Your home deserves a contractor who is licensed, insured, transparent, and accountable. Learn more about our work as a general contractor in Agoura Hills, then call Mars Construction Industries at 310.880.9718. We will visit your property, give you a straight assessment, and put everything in writing — because that is how this business should be done.