A licensed GC tells you what to watch for before you hand over a single dollar.
What Are the Biggest Red Flags When Hiring a Contractor in 2026?
The biggest red flags fall into three buckets: licensing problems, bid behavior, and contract terms that favor the contractor at your expense.
I have been a licensed general contractor since 2017. In my experience building homes across Silicon Valley since 2017, the homeowners who got burned almost always ignored at least one of the warning signs below. Not because they were naive - because nobody told them what to look for.
This is that list. Print it out. Use it before you sign anything.
As a contractor, I can tell you that the riskiest moment in any project is not during construction. It is the 72 hours before you sign the contract. That is when every warning sign is visible if you know where to look. Once you sign, your leverage drops to almost zero.
| Red Flag Category | What It Looks Like | What It Actually Means |
|---|---|---|
| Licensing | Unlicensed, expired, or suspended CSLB number | No bond, no workers comp, no legal recourse for you |
| Bid behavior | Bid is 30%+ below the others | Change orders incoming - or they will abandon the job |
| Deposit demand | Asking for more than 10% or $1,000 upfront | Violates California law and a major fraud signal |
| Contract terms | No fixed price, vague scope, no payment schedule | You have no protection if things go sideways |
| Communication | Takes 48+ hours to respond before the contract is signed | It gets worse after you pay them |
| References | Cannot provide 3 recent references from similar jobs | Either new, unreliable, or burning bridges constantly |
How Do I Know If a Contractor's License Is Actually Valid?
Go to cslb.ca.gov and look up their license number right now. Takes 30 seconds. Do not trust a license card they hand you - cards do not expire when licenses do.
What you are checking for on CSLB:
- Status: Must say "Active." Anything else - suspended, expired, canceled - means they legally cannot work on your home in California.
- Bond: Contractors in California are required to carry a $25,000 contractor bond. If it is not current, they are not bonded. Full stop.
- Workers compensation: If they have employees and no WC on file, you could be liable if a worker gets hurt on your property.
- Disciplinary actions: Look for citations, probation, or prior license suspensions. One complaint does not disqualify someone. A pattern does.
According to CSLB complaint data, thousands of unlicensed contractor complaints are filed in California each year. Many involve homeowners who never verified the license before paying a deposit.
As a licensed GC who has completed hundreds of remodels, I have seen homeowners lose $20,000 to $80,000 to contractors who were either unlicensed from day one or had their license suspended before the job started - and nobody checked.
The free CSLB license checker at homeowners.useopsite.com/check pulls live data from the CSLB database and also shows the contractor's permit history from public records - so you can see how many jobs they have actually completed, their inspection pass rate, and what types of projects they specialize in. That permit history is data most homeowners never know to look for.
What Does a Suspiciously Low Bid Actually Signal?
A bid that is 30% or more below the other bids is not a deal. It is one of two things: a contractor who does not understand what the job actually costs, or one who plans to make up the difference through change orders once you are locked in.
Based on typical project data from Bay Area contractors, a mid-range kitchen remodel runs $80,000 to $160,000 in 2026. A bathroom renovation runs $25,000 to $65,000 depending on scope. When I see a bid come in at $45,000 for a job the other two contractors priced at $90,000, that is not a bidding win. That is a liability.
Get three bids minimum. Not two, not one. Three. And when you get them, compare them line by line - not just the bottom-line number. A low total bid often hides:
- Missing scope items (demo, permits, cleanup) that will reappear as change orders
- Low allowances for materials that will balloon when actual selections are made
- Missing subcontractor costs for electrical, plumbing, or HVAC
- No contingency built in - so every surprise becomes a change order
From working with homeowners on projects ranging from $50K to $2M+, the change order game is the most common way contractors squeeze extra money out of a project. A contractor who bids low and then hits you with $15,000 in change orders is not saving you money. They are controlling when you find out what the job actually costs.
The guide on how much a kitchen remodel actually costs breaks down real cost ranges for each phase of the project - useful for sanity-checking any bid you receive.
How Much Deposit Can a Contractor Legally Ask For in California?
Under California law, a contractor cannot legally require more than 10% of the total contract price or $1,000 as an initial deposit - whichever is less. If they are asking for 30%, 40%, or "half up front," that is a legal violation and one of the clearest contractor fraud signals in the industry.
As a contractor, I can tell you that legitimate GCs do not need a large upfront deposit to start your job. We have supplier accounts, lines of credit, and cash flow from other projects. A contractor demanding $25,000 before lifting a hammer has either terrible credit with their suppliers or they are planning to take your money and stall.
What a legal payment schedule looks like on a $100,000 project:
| Payment Stage | Trigger | Typical Amount |
|---|---|---|
| Deposit | Contract signing | $1,000 or 10% max by law |
| Draw 1 | Framing / rough-in complete | 25-30% of contract |
| Draw 2 | Drywall / MEP inspections passed | 25-30% of contract |
| Draw 3 | Substantial completion | 25-30% of contract |
| Final | Punch list complete + sign-off | 10% retention |
That last 10% - called retention or retainage - is your leverage. Do not pay it until every item on the punch list is done and you have a certificate of completion or final inspection sign-off. Contractors who pressure you to release retention early are prioritizing their cash flow over your finished project.
If you want to understand how draw schedules work and why the payment sequence matters, the full breakdown is at what is a draw schedule in construction.
What Contract Red Flags Should I Look For Before Signing?
The contract is the only document that protects you if everything goes wrong. A bad contract is worse than no contract - because it creates the illusion of protection while actually giving all the leverage to the contractor.
Based on 2026 construction cost data and my experience reviewing contracts with homeowners, here are the terms that should make you stop and ask questions:
- No fixed price: Time-and-materials contracts with no cap mean you have no idea what the final cost will be. Insist on a fixed-price contract or a cost-plus contract with a guaranteed maximum price.
- Unlimited change order authority: If the contract lets the contractor proceed with any change order without your written approval first, you will get surprised with invoices. Every change order must require your signature before work begins.
- No specific start and completion dates: "We'll start soon" is not a contract term. "Work commences June 1, 2026 and achieves substantial completion by September 30, 2026" is.
- No lien waiver requirement: If the contract does not require the contractor to provide conditional lien waivers at each draw and a final unconditional lien waiver at the end, subcontractors and suppliers can file a mechanic's lien against your home even after you paid the GC in full.
- Broad force majeure language: Some contracts let contractors blame any delay on "unforeseen circumstances." That is a blank check for schedule extensions.
As a licensed GC who has completed hundreds of remodels, I always tell homeowners: if a contractor resists putting a completion date in the contract, that is a red flag. Confident contractors commit to schedules.
A professional AI-powered contract review through homeowners.useopsite.com checks for these exact clauses - payment terms, lien waiver requirements, change order language, and scope gaps - before you sign.
What Should I Do If I Spot Red Flags During the Project?
Document everything immediately. Red flags mid-project carry different weight than pre-hire warnings - because now you have money on the line and a half-finished kitchen.
The three most common mid-project red flags, and exactly what to do:
Suspicious change orders. You receive a change order for $8,000 to "address unforeseen conditions" and the scope is vague. Do not approve it in writing until the contractor specifies exactly what work is being done, why it was not in the original scope, and how the price was calculated. Based on 2026 construction cost data, padding on change orders typically runs 20-40% above fair market rates for the work. A change order analyzer - like the one built into the Opsite project dashboard - can cross-check claimed amounts against California market rates so you know what is legitimate before you sign.
Work stalling with money already paid. If your contractor has collected 60% of the contract but the project is only 30% complete, that is a severe cash-flow mismatch. This is how jobs get abandoned. Stop the next scheduled payment and request an explanation in writing. If you do not get one within 48 hours, call the CSLB and consult an attorney before paying another dollar.
Permit problems. If work is happening without permits, or permits were pulled but inspections keep failing, that is a serious problem. Unpermitted work can void your homeowner's insurance, create issues when you sell, and - depending on the scope - require demolition and redo. The free Property Watch tool at homeowners.useopsite.com monitors permits filed at your address automatically and emails you if anything changes, so you are not relying on the contractor to keep you informed.
Add 15-20% contingency to your budget before the project starts. Not 10%. Every project hits something unexpected - the question is whether you have the cash to handle it without handing the contractor leverage over you.
Frequently Asked Questions
Is it legal for a contractor to ask for 50% upfront in California?
No. California law limits the initial deposit to 10% of the total contract price or $1,000, whichever is less. A contractor demanding 50% upfront is violating state law. This is one of the most reliable fraud signals in the industry. Report it to the CSLB at cslb.ca.gov.
Can a contractor work without a license in California?
Not legally, on jobs over $500 in combined labor and materials. Working without a CSLB license in California is a misdemeanor. More importantly for you, an unlicensed contractor is not bonded and does not carry workers' compensation insurance - which means you have no legal protection if the work is defective or a worker is injured on your property.
What is a lien waiver and do I really need one?
A lien waiver is a document where a contractor, subcontractor, or supplier acknowledges receiving payment and gives up the right to file a mechanic's lien against your property for that amount. You need one at every draw. Without conditional lien waivers from the GC and key subcontractors, you can pay your general contractor in full and still have a plumber or lumber yard file a lien against your home because the GC did not pay them.
How do I verify a contractor's license in California?
Go to cslb.ca.gov and search by license number or business name. You can also use the free CSLB checker at homeowners.useopsite.com/check, which pulls live data and also shows the contractor's permit history, inspection pass rate, and any disciplinary actions - all in one place.
What is a reasonable response time for a contractor during a project?
Same business day for urgent questions, 24 hours maximum for routine questions. If your contractor consistently takes 48+ hours to return a text or call before the contract is signed, that pace will get worse once they have your money. Communication speed is a direct predictor of project management quality.
What should a contractor's bid include?
A complete bid should include a line-item breakdown of labor and materials, permit costs, a list of included subcontractors, material allowances with specific dollar amounts, start and completion dates, payment schedule, and warranty terms. Any bid that is just a single dollar amount with no breakdown is not a bid - it is a placeholder that will be padded with change orders later.
How many references should I ask a contractor for?
Ask for at least three references from projects completed in the last 24 months that are similar in scope and dollar value to yours. A kitchen remodel contractor should give you kitchen remodel references - not a deck and a bathroom from five years ago. Call every one of them. Ask specifically: did the project finish on time, on budget, and did they come back to fix punch list items promptly?
What happens if my contractor abandons the job mid-project?
First, document everything in writing - send a formal notice of abandonment to the contractor's address of record. Second, file a complaint with the CSLB. Third, if you have a valid written contract with a bonded, licensed contractor, the contractor's bond may cover some of your losses. Fourth, consult a construction attorney before paying any new contractor to complete the work - the way you structure the completion contract affects your legal claims against the original contractor.