How to Choose a Reliable Home Services Contractor

Every year, homeowners lose billions of dollars to unlicensed contractors, incomplete work, and outright scams. The good news: the warning signs are almost always visible before you sign anything. Knowing what to look for takes less than an hour and can save you from major financial and legal headaches.

Here’s a practical, step-by-step guide for vetting any home services contractor — roofer, plumber, HVAC tech, electrician, or general contractor.

1. Verify the License (Takes 5 Minutes)

Most states require contractors to hold a state-issued license for any work over a certain dollar threshold. Go to your state’s contractor licensing board website and search the contractor’s name or license number.

What you’re confirming:

The license is active (not expired or suspended)
The license covers the type of work being done
The license is held by the actual company, not a subcontractor

If a contractor can’t give you their license number, that’s a hard stop.

2. Confirm Liability Insurance and Workers’ Comp

Ask for a Certificate of Insurance (COI) before any work begins. Two coverages matter:

General liability: Covers property damage the contractor causes. Minimum $1M per occurrence for most residential work.
Workers’ compensation: Covers injuries to the contractor’s employees on your property. If they don’t carry it, you could be liable.

Call the insurance company directly to verify the certificate is current — fake COIs are not unheard of.

3. Check Online Reviews — But Read Them Critically

Google, Yelp, Angi, and the Better Business Bureau all have contractor reviews. Look for:

Volume and recency: 50+ reviews is meaningful; 3 reviews from 2019 is not.
Response to negative reviews: A professional response is a green flag. Defensiveness or threats are red flags.
Specific detail: Real reviews mention specifics (names, project types, timelines). Generic positives (“great work! 5 stars!”) can be fake.

4. Ask for References from Similar Projects

Any contractor willing to work for you should be able to provide 2–3 references from projects similar in scope and value to yours. Call them. Ask:

Did the crew show up on time and as scheduled?
Were there any unexpected charges? How were they handled?
Was the work completed within the quoted timeline?
Would you hire them again?

5. Get Three Quotes — Compare Line Items, Not Just Totals

A total price comparison doesn’t tell you much. Request itemized quotes that break down:

Materials (brand, grade, square footage or unit quantity)
Labor
Disposal
Permit fees (if applicable)
Warranty terms

A contractor who refuses to itemize is a contractor who doesn’t want you comparing their pricing.

6. Understand Payment Terms Before You Sign

Reasonable: 10–20% deposit at signing, progress payments tied to milestones, final payment on completion and inspection.

Red flags:

Requesting 50%+ upfront
Asking for cash-only payment
Asking you to pull the permit (means they may be unlicensed)
“Special discount” only available if you sign today

7. Get Everything in Writing

A verbal agreement is nearly impossible to enforce. Your contract should specify:

Scope of work (detailed, not “roof repair”)
Materials with brand names and product specs
Start and estimated completion dates
What constitutes change-order conditions (work outside scope = written amendment)
Warranty terms and duration
Lien waiver provision (protects you if the contractor doesn’t pay their suppliers)

8. Trust Your Gut on Professionalism

How a contractor communicates before you hire them is how they’ll communicate during the project. Slow responses, vague answers, resistance to standard documentation questions — these rarely improve once a contract is signed.

Skip the Vetting Hassle — ProCraft Does It For You

Every contractor in ProCraft’s network has been pre-screened for active licensing, insurance, and customer history. You get quotes from verified professionals without having to chase down certificates yourself.

Find a licensed contractor near you →