How to Vet Home Service Providers: The Certification Checklist
Don't learn the hard way. Use this 15-point verification system to avoid scams, shoddy work, and "contractors" who disappear with your deposit. Includes downloadable checklist + verification scripts.
The average homeowner loses $4,500 to contractor fraud—not from hiring the expensive option, but from skipping verification steps that take 10 minutes. This guide gives you the exact process we use to vet every technician who wears the Mr Home Guy badge. Use it for any home service hire.
The 5-Step Vetting Process
Complete these steps in order. Skip one, and you're rolling the dice.
Verify Business Legitimacy
Confirm they exist as a real business entity, not just a guy with a truck and business cards.
- Check Secretary of State business registry
- Verify physical address (not just PO box)
- Search for LLC/corp filing status
- Review how long they've been in business
Validate Licenses & Permits
Ensure they're legally authorized to perform the specific work you need in your jurisdiction.
- Request license number and verify online
- Check for disciplinary actions or suspensions
- Confirm license covers your project scope
- Verify reciprocity if跨-state work
Confirm Insurance Coverage
Protect yourself from liability if they're injured on your property or damage your home.
- Request Certificate of Insurance (COI)
- Verify general liability coverage ($1M+)
- Confirm workers' compensation policy
- Check policy expiration dates
Check Background & Reviews
Past performance predicts future results. Dig deeper than star ratings.
- Read 1-star and 2-star reviews first
- Check BBB for complaint patterns
- Request 3 recent references
- Verify background check policy
Secure the Contract
Get everything in writing before work starts or money changes hands.
- Detailed scope of work in writing
- Payment schedule (never 100% upfront)
- Start/completion dates with penalties
- Warranty terms and lien release clause
Required vs. Recommended Documentation
Know exactly what to request—and what's optional.
Certificate of Insurance (COI)
Proof of general liability and workers' comp coverage. Must be current and list minimum $1M coverage.
How to verify →State Business License
Registered entity with your state's Secretary of State. Verify online—don't trust a photo.
Verify by state →Trade-Specific License
Electricians, plumbers, HVAC require state-level licensing. Handymen need local business licenses.
Check requirements →Bond Certificate
Financial protection if they abandon the job. Required in some states, recommended everywhere.
What bonds cover →Manufacturer Certifications
Factory training for specific products (HVAC systems, smart home tech, etc.). Validates expertise.
Why this matters →Continuing Education Records
Proof they stay current with code changes and new techniques. Shows professional commitment.
Red flags here →Step-by-Step Verification Walkthroughs
Click to see exactly how to verify each document type.
How to Verify a Certificate of Insurance
- Request the COI directly from their insurance agent Don't accept a photocopy from the contractor. Call the agent listed on the certificate to confirm it's valid and current.
- Check coverage amounts General liability should be at least $1 million per occurrence. Workers' comp is required if they have employees—verify no exceptions.
- Verify you're listed as "certificate holder" This ensures you're notified if the policy is cancelled. If not listed, request a new COI with your name added.
- Confirm policy dates Make sure coverage extends through your project completion date. Ask for renewal confirmation if project spans policy periods.
How to Verify a Contractor License
- Get the exact license number and state Every licensed contractor has a unique number. "Fully licensed" means nothing without the number to verify.
- Visit your state's licensing board website Search "[State] contractor license lookup" to find the official verification portal. Never use third-party sites.
- Enter the license number and verify status Status should show "Active" or "Current." Note any restrictions on the license type or scope of work.
- Check for complaints or disciplinary actions Most states show complaint history. One complaint isn't a dealbreaker—patterns are. Look for license suspensions or probations.
How to Analyze Online Reviews (The Right Way)
- Start with 1-star and 2-star reviews These reveal real problems: no-shows, damage, unfinished work, price hikes. Look for patterns, not isolated incidents.
- Check how they respond to negative reviews Professional contractors address complaints calmly and offer solutions. Defensive or aggressive responses are red flags.
- Verify review authenticity Look for detailed specifics (dates, names, project types) vs. generic "Great job!" reviews. Check if reviewers have other activity.
- Cross-reference multiple platforms Check Google, Yelp, BBB, Angi, and Facebook. Consistent ratings across platforms indicate genuine reputation.
How to Review a Home Service Contract
- Verify detailed scope of work Vague language like "install TV" leads to disputes. Should specify: mount type, cable concealment, wall patching, cleanup, etc.
- Check payment terms Never pay 100% upfront. Standard is 10-33% deposit, progress payments at milestones, final payment on completion.
- Confirm start and completion dates Should include specific dates or timeframes, plus penalties for delays caused by contractor (not weather/permit delays).
- Look for lien release clause Protects you if they don't pay suppliers. Should include "Final payment contingent upon signed lien releases."
🚩 12 Red Flags That Scream "Scam"
One of these might be a misunderstanding. Two? Walk away. Three? Run.
Demands Full Payment Upfront
Legitimate contractors have accounts with suppliers and don't need your money to buy materials. 100% upfront is a license to disappear.
Average loss: $3,200 - $8,500Door-to-Door "Storm Chasers"
Appear after storms offering quick repairs. Often unlicensed, uninsured, and untraceable once they leave your property.
Average loss: $2,800 - $15,000"Today Only" Pricing Pressure
High-pressure tactics indicate desperation or scams. Quality contractors are booked weeks out and don't need to pressure you.
Average loss: $1,500 - $4,200Only Accepts Cash or Zelle
Cash leaves no paper trail. No checks or credit cards often means no business account, no insurance, and no recourse if things go wrong.
Average loss: $2,100 - $6,800No Physical Address Listed
PO boxes or "we're mobile" means no fixed location to serve legal notices. Legitimate businesses have offices or showrooms.
Average loss: $1,800 - $5,500Refuses Written Estimates
Verbal quotes lead to "surprise" charges. If they won't put it in writing, they plan to change the price later.
Average overcharge: 40-120%Multiple Business Names
Operating under several names helps them escape bad reviews and BBB complaints. Search their name + "also known as."
Pattern of fraudUnmarked Vehicles
No logo, no license number, no company name? They're not established enough to invest in branding—or they're hiding identity.
Untraceable if problems ariseVague About Insurance/License
"We're fully covered" without proof means they're probably not. Specific license numbers and COIs or it didn't happen.
You assume liability riskNo Online Presence Whatsoever
Zero reviews, no website, no social media in 2025 is suspicious. Even solo operators have Google Business profiles.
No accountability mechanismOnly Uses Cell Phones/VoIP
No business line with voicemail, no office number. Disposable numbers make them hard to reach when problems arise.
Communication blackouts commonWants to Start Immediately
Quality contractors are booked 2-6 weeks out. Immediate availability often means they're chasing deposits, not doing quality work.
Desperation = poor quality🎤 The 10-Question Interview Script
Ask these questions in this order. Their answers reveal everything.
1. "Can you provide your license number and the state that issued it?"
Listen for hesitation or "I'll get that to you." Pros have it memorized or immediately accessible.
✓ Good: "Absolutely, it's LIC-12345 issued by Massachusetts. You can verify at mass.gov/..." ✗ Bad: "We're fully licensed" / "Let me check with my office" / "Do you really need that?"2. "Will you provide a Certificate of Insurance naming me as certificate holder?"
This is standard practice. Resistance means they don't have insurance or don't want you verifying it.
✓ Good: "Of course, I'll have my agent email it directly to you today." ✗ Bad: "I have insurance, don't worry" / "Here's a photo of my card" / "That costs extra"3. "Can you provide three references from jobs completed in the last 6 months?"
Recent references verify current work quality. Old references might be from before they went downhill.
✓ Good: "I'll text you contact info for three clients right now. Two are from last month." ✗ Bad: "I have great reviews online" / "My clients prefer privacy" / "Here's one from 2019"4. "What does your warranty cover and for how long?"
Professional standing behind their work offers clear warranty terms. Vague answers mean no real protection.
✓ Good: "1 year on workmanship, lifetime on hardware defects. Here's the warranty document." ✗ Bad: "We guarantee our work" / "If there's a problem, call me" / "Warranty? For what?"5. "What percentage do you require upfront, and what are the payment milestones?"
Never pay 100% upfront. Standard is 10-33% deposit, with progress payments tied to verifiable milestones.
✓ Good: "We take 25% to schedule, 50% at material delivery, 25% on final walkthrough." ✗ Bad: "We need 50% to start" / "Full payment to hold the slot" / "Cash only, day of"6. "Who will be performing the actual work—employees or subcontractors?"
If subs are used, verify they're also insured and background-checked. Some contractors bid then sub everything out.
✓ Good: "Our W-2 employees. Background-checked, uniformed, and trained in-house." ✗ Bad: "My guys" / "I use trusted subs" / "Whoever's available that day"7. "How do you handle permits and inspections if required?"
They should know permit requirements for your project and include permit costs in the estimate.
✓ Good: "We pull all permits, schedule inspections, and factor $X into your quote." ✗ Bad: "Permits? For this?" / "You can pull them to save money" / "We don't do permits"8. "What happens if you discover unexpected issues during the job?"
Change orders are common, but the process should be transparent. They should stop and discuss, not just bill.
✓ Good: "We stop work, document with photos, and provide a written change order for your approval." ✗ Bad: "We handle it" / "It'll cost more, obviously" / "Just trust me"9. "What is your cleanup policy, and do you haul away debris?"
Professional cleanup should be included. "You can keep the scraps" or leaving a mess is unprofessional.
✓ Good: "Full cleanup included. We haul away all debris and recycling. You won't know we were here." ✗ Bad: "We leave the big pieces" / "You can use the extra materials" / "Cleanup costs extra"10. "Can I see a sample contract before committing?"
Transparent contractors have standard contracts ready. Reluctance suggests they customize terms to their advantage.
✓ Good: "I'll email you our standard contract right now. It covers 95% of jobs with minor modifications." ✗ Bad: "I don't do contracts" / "We can write something up after you pay" / "It's standard"Frequently Asked Questions
Request a Certificate of Insurance (COI) directly from their insurance agent, not from the contractor. Call the agent using the phone number on the certificate (not one the contractor provides) to verify the policy is active, coverage amounts are correct ($1M+ general liability), and the expiration date extends past your project completion. Ask to be listed as "certificate holder" so you're notified if the policy is cancelled.
A business license (from your city/county) allows them to operate a business and collect sales tax. A contractor license (from the state) proves they've met experience requirements, passed trade exams, and carry required insurance. For electrical, plumbing, and HVAC work, state-level trade licensing is mandatory. Handymen typically need only a business license for minor repairs, but check your state's threshold for "minor" vs. "contractor-required" work.
These platforms provide leads but do not guarantee licensing or insurance verification. Treat platform hires exactly like independent contractors—run the full vetting checklist. Many platforms have "Elite" or "Pro" badges that indicate background checks, but these are not substitutes for trade licenses or liability insurance. Always verify credentials independently, regardless of platform badges or reviews.
Never pay 100% upfront. Standard terms are: 10-25% deposit to schedule (covers administrative costs), 25-40% at material delivery or project start, and the balance on completion after final walkthrough. For multi-week projects, tie progress payments to verifiable milestones (e.g., "rough-in complete," "drywall hung"). Hold at least 10% until you're completely satisfied—this is your leverage for punch-list completion.
For independent hires (not through a service), it's reasonable to ask if they've had background checks and request proof. For services like Mr Home Guy, we background-check every technician and carry the liability if something goes wrong. If hiring independently, you can request they provide a recent background check (within 6 months) or use a service like Checkr or GoodHire—though most quality contractors working in homes already have this documentation.
This is a major red flag. Licensed contractors must pull permits in their name—it's illegal for unlicensed individuals to perform permitted work. If they ask you to pull permits, they're either unlicensed or trying to avoid accountability. If inspections fail, you're on the hook for corrections, not them. Never agree to this arrangement.
We Did the Vetting So You Don't Have To
Every Mr Home Guy technician passes our 15-point verification, background check, and skills assessment. Book with confidence—skip the homework.
Book a Verified Pro in 60 Seconds →Continue Your Research
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