How to Choose a Contractor: Licensing, Quotes, and the Red Flags That Matter

By Home Cost Guide Editorial Team · Published March 23, 2026

Most home-improvement disasters aren’t caused by bad materials — they’re caused by hiring decisions made in an afternoon on a project worth five figures. The vetting process below takes a few hours spread over a week or two. On an $11,500 roof or a $28,000 bathroom, it’s the highest-paid work you’ll do all year.

Step 1: Verify the license — and know what your state actually licenses

Licensing is wildly inconsistent across states, and knowing your state’s regime tells you how much weight a “licensed and insured” claim carries:

• Strong-licensing states (California, Florida, Arizona, Nevada, and others) license general and specialty contractors at the state level, with exams, bonding, and searchable disciplinary records. Verify at the state board’s website (CSLB in California, DBPR in Florida) — check status, classification matches the work, complaints, and bond.
• Registration states (much of the Northeast and Midwest) require registration but no competency exam. Verification still matters — it confirms a legal entity you can pursue — but it’s not a skill signal.
• No-license states: Texas famously licenses no general contractors or roofers at the state level (plumbers, electricians, and HVAC are licensed trades everywhere). In these states, insurance verification and reputation carry the entire weight.

Wherever you are, licenses for the trades within your project (electrical, plumbing, mechanical) are near-universal requirements. A remodeler who plans to do their own electrical without a licensed electrician is your cue to exit.

Step 2: Verify insurance the way that actually works

Everyone says “licensed and insured.” Verification means:

1. Ask for a Certificate of Insurance (COI) for both general liability (minimum $1M for most residential work) and workers’ compensation.
2. Have the certificate sent to you directly from the insurance agent, or call the agent to confirm the policy is active. Forged and lapsed COIs are a real problem.
3. Why workers’ comp matters to you: if an uninsured worker falls off your roof, your homeowner’s policy — and your assets — can be in play.

Step 3: Get three comparable quotes

Three bids on an identical written scope — same materials by brand and line, same specifications — is the only way price comparison means anything.

• Itemized bids only. A single number can’t be compared, negotiated, or audited against change orders later.
• Expect a 15–25% spread. That’s normal market variation. A bid 40%+ below the others is missing scope, underinsured, or planning change orders; a bid 40% above is often a heavily-marketed sales organization whose price funds the marketing (common in windows and bath-conversion franchises).
• Beware the instant discount. “This price is only good today” is the single most reliable red flag in residential sales. Legitimate pricing survives a week of thought.
• If financing comes up, get the cash price first, in writing — dealer financing fees are frequently baked into quotes before you see them, a mechanic we detail in our financing guide.

Step 4: Check reputation where it’s hard to fake

• References: ask for two recent customers and one from 3+ years ago (durability tells more than fresh paint), and actually call. Ask: on budget? change orders handled how? would you rehire?
• Records over reviews: court records and your state AG/consumer-protection complaint database are harder to fake than review platforms. Search the business name and the owner’s name — problem operators reincorporate.
• Longevity and address: a physical local address and 5+ years under the same name filter out most fly-by-night risk. This matters most after storms, when out-of-town crews canvass damaged neighborhoods — our hail claims guide covers that specific hustle.
• Manufacturer certifications (GAF, Owens Corning, window makers): modest signals — they gate on training and standing, and enable better warranties — but they’re marketing programs, not guarantees.

The red-flag list

Any one of these is a caution; two or more is a no:

• Requires a large deposit — more than ~10–30%, or beyond state caps (California: 10% or $1,000, whichever is less; several states have similar limits)
• Cash-only, or discounts for skipping the contract
• Suggests skipping permits (“saves you money” — it transfers all risk to you)
• Offers to cover or “eat” your insurance deductible (fraud in many states)
• No physical address; magnetic truck signs; license “pending”
• Pressure tactics: today-only pricing, “my manager can approve a special discount if you sign now”
• Vague scope: “install new roof — $12,000” with no shingle line, underlayment, or ventilation specified
• Unwilling to put the workmanship warranty in writing

The contract: where protection actually lives

Before work starts, the agreement should specify: itemized scope with brands and model/line numbers; total price and a payment schedule tied to completed milestones (never dates alone, never majority up front); start and substantial-completion windows; a written change-order process (no verbal extras — this is where budgets die); who pulls permits (the contractor, always); daily cleanup and disposal; workmanship warranty terms (1–2 years minimum written; 5–10 signals confidence); and lien releases from the contractor and subcontractors as payments are made — without them, an unpaid sub can lien your home even though you paid the GC in full.

Hold the final 10% until the punch list is genuinely complete. It’s the only leverage that survives to the end of the job.

FAQs

How many quotes should I get? Three, on an identical written scope, from contractors you found through different channels (referral, supplier recommendation, your own research) — not three names from one lead-matching site, which often draws from the same pool of advertisers.

Is the cheapest bid ever the right choice? Sometimes — when it’s itemized, the scope matches, insurance verifies, and references check out. The cheapest bid is only a red flag when it’s an outlier you can’t explain after asking.

What deposit is normal? 10% is a healthy norm for most work; special-order materials (custom windows, cabinetry) legitimately justify more, paid against documented orders. 50% up front is never justified for an established contractor.

Should I hire the contractor my insurance company recommends? Carrier “preferred vendor” programs offer convenience and workmanship guarantees, but the contractor’s economic loyalty runs partly to the carrier’s cost control. It’s a legitimate option to include in your three bids, not a default.

What if my state doesn’t license contractors? Verification shifts to insurance (confirmed via the agent), lien and court history, business longevity, and references. In no-license states like Texas, assume the burden of vetting is entirely on you — because it is.