Choosing the wrong asbestos contractor can leave you with an incomplete job, no documentation, and a contaminated home. Here's a 7-point checklist to make sure you're hiring a legitimate, licensed professional.
⚡ The Checklist
If a contractor can't satisfy every item on this list, move on. The cheapest quote is almost never the safest — and fixing a bad asbestos removal is always more expensive than doing it right the first time.
The 7-point contractor verification checklist
| # | Verify This | How to Check | Red Flag |
|---|---|---|---|
| 1 | WI DHS Certification | Ask for certification numbers, verify with DHS | Can't produce documentation |
| 2 | General Liability Insurance (≥$1M) | Request Certificate of Insurance with your name as additional insured | Reluctance to provide, expired certificates |
| 3 | Workers' Compensation | Verify coverage is current for all employees | Missing — you're liable if a worker is injured |
| 4 | Written Estimate with Scope | Must detail: materials, quantities, containment, disposal, clearance testing | Verbal-only, vague, or cash-only pricing |
| 5 | WDNR Compliance History | Ask about WDNR notification process, mention NR 447 | Offers to "skip notification to save time" |
| 6 | Disposal Documentation | Ask where waste goes, demand signed disposal manifest after project | Vague about disposal, "handles it quietly" |
| 7 | Clearance Air Testing | Independent 3rd-party must perform post-removal air monitoring | No mention of clearance testing in the quote |
What should an asbestos removal estimate include?
A professional estimate should detail:
- Pre-work inspection scope — what will be tested and how many samples
- Materials to be removed — types, locations, and quantities
- Containment plan — poly sheeting, negative air pressure specifications, air monitoring
- WDNR notification — confirmation that the contractor handles notification and fees
- Disposal plan — which licensed facility, chain-of-custody documentation
- Clearance testing — who performs it, what standard, when results are available
- Completion documentation — final report with lab results, disposal manifest, photos
- Timeline — start date, estimated duration, and planned completion
What are the biggest red flags?
- 🚩 "We can do it this weekend" — WDNR notification requires 10 working days for large projects
- 🚩 Cash-only pricing, no written contract — no paper trail means no accountability
- 🚩 Significantly lower price than other quotes — they're probably cutting corners on containment, disposal, or testing
- 🚩 "We don't need to notify WDNR for this" — unless your project is genuinely under notification thresholds, this is a violation
- 🚩 No mention of clearance testing — how will you know the area is actually safe?
- 🚩 "Our guys handle the air testing too" — clearance testing should be done by an independent 3rd party
One Call 365 delivers on all 7 points. State-certified inspectors and abatement crews, full insurance documentation, written estimates with detailed scope, WDNR-compliant notification, licensed disposal with chain-of-custody, independent clearance testing, and completion reports for your records.
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