5 Questions to Ask a Contractor Before Signing Anything

Why Signing Too Fast Is the Most Expensive Mistake in Home Improvement

The fastest way to lose money in home improvement isn't a bad bid — it's a signature placed before the questions get asked. California's licensing board puts it bluntly: most of the problems it sees could be prevented if homeowners knew their rights and took responsibility for their project.

The stakes are real. California requires a CSLB license for any job totaling $1,000 or more in combined labor and materials, and unlicensed operators rarely carry bonds or workers' compensation. If a worker gets hurt on your property and the contractor has no insurance, CSLB warns that you could be financially liable for injuries and rehabilitation — costs that can dwarf the project itself.

And if things go wrong, the safety net is thinner than most homeowners expect. The standard contractor license bond is only $25,000, which CSLB notes is often not enough to cover multiple complaints or a project worth more than the bond. Even filing a complaint with the state doesn't guarantee your money back: CSLB's complaint process prioritizes public protection, not restitution — recovering actual damages means going to court. Prevention, in other words, is the only reliable protection.

The warning signs tend to cluster around pressure and payment. Consumer reporting from KCRA and Good Housekeeping identifies the patterns that should stop any homeowner mid-signature:

• Pressure to sign immediately — a legitimate contractor can wait a day while you verify credentials.
• Blank spaces or too many "TBD" costs in the contract, which can leave the final bill $10,000 higher than expected.
• Large upfront payment requests — California caps down payments at 10% of the contract price or $1,000, whichever is less.
• Cash-only demands or an inability to produce license and insurance documentation.

One detail trips up even careful homeowners: a license number printed on a truck or business card proves nothing. CSLB is explicit that seeing a license number doesn't mean the license is valid — it has to be verified against the state's records before you sign.

That verification step is exactly why the Altadena Builder Directory checks every listed contractor's license against CSLB before they appear in the registry. The five questions that follow will show you how to run that same check yourself — before your signature makes someone else's problems your own.

The 5 Questions That Protect You Before You Sign

A signature on a contract is the moment your leverage disappears. These five questions — all grounded in guidance from the Contractors State License Board and consumer experts — put that leverage back in your hands before the ink dries.

Question 1: Are you licensed, and in what classification? California requires a CSLB license for any job totaling $1,000 or more in combined labor and materials, and licenses span 45 distinct classifications. But here's the catch: every contractor ad must display a license number, yet CSLB explicitly warns that seeing a number doesn't mean the license is valid. Verify it yourself — by law, you're never required to pay an unlicensed contractor, and CSLB complaint investigations don't guarantee you'll recover a dime.

Question 2: Can I see copies of your license, bond, and insurance? Dan DiClerico, Good Housekeeping's home improvement director, puts it bluntly: "Don't take their word for it. You have to get a copy before you sign that contract." Paper copies matter because a contractor's bond is capped at $25,000 — which CSLB notes is often not enough to cover multiple complaints or a project worth more than the bond. And if a worker is injured on your property and the contractor lacks insurance, you could be financially liable.

Question 3: What's your down payment and payment schedule? California caps down payments at 10% of the contract price or $1,000, whichever is less. A request for more is a red flag — only about two dozen licensees statewide hold the blanket performance bond that legally allows exceeding the cap. Payments after that should be tied to completed, inspectable work.

Question 4: Are there allowances or TBD costs in this contract? DiClerico describes an allowance as "any blank space on a contract — think of it almost like a TBD." Unresolved allowances can leave your final bill roughly $10,000 higher than expected. Before signing, demand that every allowance carries a dollar figure and a specification.

Question 5: Are you the right type of contractor for this project? Per CSLB classification rules, a "B" General Building contractor is appropriate when a job involves more than two trades — say, a kitchen remodel touching plumbing, electrical, and cabinetry. Mismatched classifications can void your protections entirely.

Your pre-signing checklist:

• Verify the license number through CSLB's lookup or (800) 321-CSLB
• Get physical copies of license, bond, and insurance certificates
• Confirm the down payment stays at or below 10%/$1,000
• Attach dollar amounts to every allowance line item
• Match the license classification to your project's scope

CSLB itself puts it best: "Most of the problems CSLB sees could be prevented if homeowners knew their home improvement rights and took responsibility for their project." The Altadena Builder Directory applies that same principle upstream — every contractor in our registry is license-verified against CSLB before listing, so the first question is answered before you ever pick up the phone.

A License Number Isn't Proof — How to Actually Verify a Contractor

That license number printed on the truck door or business card? It proves nothing on its own. California law requires all contractor advertisements to display a license number, but as the Contractors State License Board cautions, "seeing a license number doesn't necessarily mean the license is valid." The number could be expired, suspended, revoked — or belong to someone else entirely.

Verification takes minutes and costs nothing. Start with CSLB's free online license lookup, where you can check any contractor's status, classification, bond, and workers' compensation coverage. Prefer to talk to a person? Call CSLB directly at (800) 321-CSLB (2752) and ask them to confirm the license is active and in good standing.

While you're in the lookup, pay attention to the classification. CSLB licenses approximately 285,000 contractors across 45 different classifications, and the right one matters. A "B" General Building contractor is appropriate when your job spans more than two unrelated trades — say, a remodel involving framing, plumbing, and electrical work. A specialty classification (like C-10 for electricians) covers single-trade projects. Hiring a painter to run your electrical wiring isn't just risky; it may mean the work isn't legally performed by someone qualified in that trade.

Once you've confirmed the license, move to bid comparison. CSLB advises getting at least three written bids on identical plans and scope of work — identical being the key word. If one bid covers different materials or omits tasks, you're not comparing prices; you're comparing apples to oranges.

And watch for the bid that seems too good to be true. An abnormally low bid is a warning sign that the contractor made mistakes in estimating, deliberately left out work, or plans to cut corners once the contract is signed. Either way, you're the one who pays for it later — through change orders, disputes, or unfinished work.

This is exactly why every listing in the Altadena Builder Directory is license-verified against CSLB records before it appears. If you'd rather skip the manual lookup, our built-in CSLB verification widget lets you check any Altadena contractor's license status in seconds — right on the page.

One last reason not to skip this step: if you hire unlicensed, you're not legally required to pay them, but you also lose most of your protections. A CSLB complaint investigation doesn't guarantee you'll recover money, and the state's $25,000 license bond "is often not enough" to cover a serious project. Verification before signing is your best — and cheapest — insurance.

Your Pre-Signing Checklist — and Where to Find Verified Altadena Contractors

Before you sign a home improvement contract in California, run one final check. A signature locks in the price, the payment schedule, and the scope — and any item you skipped verifying becomes your problem after the ink dries.

Use this checklist as your final gate. Every item maps directly to the five questions covered above:

• Verified license and correct classification — a "B" General Building contractor when the job spans more than two trades
• Physical copies of license, insurance, and the $25,000 contractor license bond — not verbal assurances
• A compliant down payment of no more than 10% of the contract price or $1,000, whichever is less
• Zero unresolved allowances or TBD line items that could inflate your final bill
• A written scope that matches your three bids, all priced on identical plans

The license item deserves extra attention. All contractor advertising in California must display a license number, but CSLB guidance is blunt: seeing a number doesn't mean the license is valid. Verify it yourself through the CSLB lookup or by calling (800) 321-CSLB (2752) — and note that the $25,000 bond behind that license "is often not enough" to cover a project worth more than the bond's value.

Why does all this matter so much before signing? Because remedies after the fact are weak. If you hire unlicensed, you're not legally required to pay the contractor at all — but you also carry real exposure, including potential financial liability if an uninsured worker is injured on your property. And even a CSLB complaint, which must be filed within four years of the act, doesn't guarantee restitution; recovery ultimately requires the courts.

The allowances item trips up even careful homeowners. Good Housekeeping's Dan DiClerico describes an allowance as "any blank space on a contract — think of it almost like a TBD," and warns those gaps can leave a final bill $10,000 more than expected. Resolve every one in writing before you sign.

Here's the good news: you can skip much of this legwork. The Altadena Builder Directory maintains a builder registry where every listing is license-verified against CSLB before it appears — so the first questions on this checklist are already answered for you. You can also run any contractor's license number through the site's live CSLB verification tool in seconds.

Verification takes an afternoon. Skipping it can cost you the project.

ctaText: Browse license-verified Altadena contractors in the builder registry socialProofText: Every listing in the Altadena Builder Directory is verified against CSLB before it appears.