How to Choose a Mold Remediation Contractor in Pennsylvania

Pennsylvania has no mold license, no state certification, and no registry of mold contractors. That means the burden of vetting is on you. Here is what to check, in order of how much it tells you.

1. PA Home Improvement Contractor registration

Under the Home Improvement Consumer Protection Act (Act 132 of 2008), any contractor doing $5,000 or more of home improvement work a year must register with the Pennsylvania Attorney General, pay $100 every two years, and carry at least $50,000 in personal injury and $50,000 in property damage liability coverage. Contracts over $500 must follow HICPA's contract rules. Ask for the PA number (it looks like PA012345) and look it up on the Attorney General's site. A remediation company that cannot produce one is either too small to matter or operating illegally.

2. Proof of insurance, not a promise of it

Ask for a certificate of insurance naming you as certificate holder. General liability is the minimum. Pollution liability is what actually covers mold-related claims, and many general policies exclude it. If they cannot explain the difference, move on.

3. Credentials that mean something

• IICRC AMRT (Applied Microbial Remediation Technician). The most recognized remediator credential. Ask whether the technicians on your job hold it, not just the owner.
• IICRC WRT (Water Restoration Technician). Usually paired with AMRT; matters because the water problem is the real problem.
• ACAC CMR / CMRS (Council-certified Microbial Remediator / Supervisor). Board-awarded, requires two and eight years of documented experience respectively. Note that NORMI issues a different "CMR" (Certified Mold Remediator); ask which one.
• Works to ANSI/IICRC S520. The consensus standard. A contractor who has never heard of it is not following it.

"EPA certified" is a red flag. The EPA does not certify mold contractors.

4. Independent clearance testing

S520 treats a remediator sampling its own work as a conflict of interest. The company removing the mold should not be the company declaring it gone. Ask who does clearance, and confirm they are a separate business. Assessment-only firms like Advanced Air Quality Services in York exist for exactly this reason.

5. A written moisture plan

Every legitimate quote answers two questions: what caused this, and what fixes it. If the proposal is a price for "treatment" with no diagnosis, it is a removal job dressed up as remediation. In a Gettysburg house on a stone foundation, that means you will be paying again next year.

6. Containment and filtration in the scope

Look for 6-mil poly containment, negative air pressure, and HEPA air scrubbers in the written scope. Fogging or spraying without containment spreads spores through the house.

7. Local references and a real address

Ask for two Adams County references from the last year. Check that the address on the estimate matches the address on the HIC registration. Several "Gettysburg mold removal" websites are lead-generation templates with an 866 number and no local office; they resell your call.

Questions to ask on the phone

1. What is your PA HIC number?
2. Who on my job holds AMRT or CMR credentials?
3. Do you follow IICRC S520?
4. What do you think caused the moisture, and does your quote fix it?
5. Who does the clearance test, and are they independent of you?
6. Is containment and HEPA filtration in the scope?
7. Do you carry pollution liability, and can I see the certificate?

Red flags

• "Licensed mold contractor" (PA has no such license).
• "EPA certified."
• Free inspection that turns into a same-day $3,000 fogging job.
• A quote with no square footage, no materials list, and no moisture cause.
• No physical address, or an address that is a UPS Store.

Ready to compare? Start with our list of firms serving Gettysburg and Adams County and the cost guide.

Sources: Pennsylvania Attorney General HIC registration page; IICRC S520 (4th ed., 2024); VerifiedRemediation certification guide; U.S. EPA mold guidance. Last reviewed September 15, 2026.