Do I have to hire a professional if I find mold in my house?

No. New York doesn't legally require homeowners to remediate mold on their own property, and homeowners are allowed to do their own work on their own property regardless of size. The licensing requirements kick in when you decide to hire a professional. Once you're hiring someone, and the affected area is larger than 10 square feet, that contractor needs a NYS Mold Remediation Contractor License and the project follows the assessment-remediation-clearance process. For small isolated spots like a bit of mildew on bathroom grout, soap, water, gloves, and ventilation are usually enough.

Can one company do both the assessment and the remediation?

Not on the same project in New York. NY Labor Law Section 936 prohibits common ownership in both the assessing and remediating company on the same property. Some companies hold both licenses for use on different projects, but never both roles on the same job.

What if I already had mold treated by an unlicensed handyman?

That's a bigger problem than most homeowners realize. Without containment, untrained mold removal usually spreads spores to clean parts of the house. We've responded to plenty of self-handled calls that ended up costing several times what proper remediation would have. A licensed mold assessor can tell you what you're actually dealing with now and whether the original problem is back. Don't assume that because the visible spot is gone, the issue is resolved.

Does homeowners insurance cover mold remediation?

Sometimes. The general rule: mold caused by a sudden covered event such as a burst pipe or storm damage with water intrusion is often partially covered, usually capped at $5,000 to $10,000. Mold from long-term humidity, slow leaks, or deferred maintenance is almost always excluded. Read your policy or call your agent before assuming. We can document the cause to support a claim when there's a legitimate covered event.

Is black mold actually dangerous?

Black mold usually means Stachybotrys chartarum, but plenty of black-colored molds aren't Stachybotrys, and plenty of dangerous molds aren't black. The honest answer is that any significant indoor mold can cause respiratory issues, allergic reactions, and chronic symptoms, especially in children, the elderly, and people with asthma. The species matters less than the volume and your individual sensitivity. Don't get hung up on the color. Get it assessed.

How long does the whole process take, start to finish?

Two to four weeks is typical from the day you call the assessor to the day you get the passed clearance report. About a week of that is active work; the rest is scheduling between the two companies, lab time on any sampling, and report writing. Reconstruction such as drywall, paint, and flooring happens after clearance and is on top of that timeline.

Can I stay in my house during remediation?

Usually yes, if the affected area is contained and isolated. We've done plenty of basement and attic remediations where the family stayed in the rest of the house with no issue. Whole-house contamination or HVAC contamination changes the answer, and sometimes you'll need to relocate for a few days. The assessor's plan will indicate whether occupied work is appropriate.

What's the difference between mold remediation and mold abatement?

In New York, remediation is the work covered by Article 32, which is what most homeowners need. Abatement is a separate license category mostly used for very large or industrial projects. For residential and most commercial work, you're hiring a Remediation Contractor.

Mold Remediation

The New York State Mold Remediation Process, Explained

July 21, 2026 | By KPM Restoration

Key Takeaway

In New York, any mold project over 10 square feet legally requires two separate companies: one licensed assessor to inspect and write the remediation plan, and one licensed remediation contractor to do the cleanup. The assessor returns at the end to verify the work. This article explains why the law works that way, what each step costs, what documents you should receive, and the questions homeowners ask most.

Found mold in your home in New York and not sure what happens next? The state has a specific legal process for it, written into the Labor Law in 2016, and most homeowners have never heard of it until they need it. Call KPM Restoration at (518) 859-9769 for a free consultation, or read on. We’re a NYS Licensed Mold Remediation Contractor serving the Capital Region and Hudson Valley, and we walk homeowners through this process every week.

Here’s the short version: in New York, you hire two separate companies for any mold project over 10 square feet. One inspects and writes the plan. The other does the cleanup. The first one comes back at the end and verifies the work. That’s the whole law in three sentences. The rest of this article explains why it works that way, what each step costs, and the questions our customers ask most often.

Why New York has a mold law in the first place
Step 1: Hire a licensed mold assessor
Step 2: The Mold Remediation Plan
Step 3: Hire a licensed mold remediation contractor
Step 4: Containment, removal, and cleanup
Step 5: Clearance testing and the passed clearance report
How to verify a contractor is licensed
What it costs and how long it takes
What documents you should receive

Why New York has a mold law in the first place

Before 2016, anyone with a shop vac and a business card could call themselves a “mold expert.” After Superstorm Sandy in 2012, thousands of Long Island and NYC homeowners got hit with the same scam: one company would show up, “test” for mold, declare a toxic emergency, and then sell the homeowner a $20,000 cleanup. Same company, same job, no oversight.

New York responded with Article 32 of the New York State Labor Law, the country’s first statewide mold licensing law. It took effect January 1, 2016 and is enforced by the New York State Department of Labor. The law has three parts: training, licensing, and minimum work standards.

The most important part of the work standards is also the part that confuses homeowners the most: a single company is not allowed to perform both the assessment and the remediation on the same property. That’s the rule that protects you, and we’ll keep coming back to it.

The two-license rule, in plain English: The company that tells you how bad the mold is can’t also be the one you pay to clean it up. They have to be separate businesses with separate ownership.

The exact statutory language is in NY Labor Law §936: “No person shall own an interest in both the licensee who performs mold assessment services and the licensee who performs mold remediation services on the same property.” The penalty for getting caught violating it can run from $800 to $10,000 per violation, plus license revocation, depending on which authority is enforcing it.

Step 1: Hire a licensed mold assessor

A mold assessor is the inspector. Their job is to figure out what you’ve got, what’s causing it, and what it’ll take to clean up. In New York, they have to hold a Mold Assessor License from the Department of Labor, valid for two years and renewed with continuing education.

When you call an assessor for the first time, expect them to:

Walk through the affected areas with you and document what they find
Use a moisture meter to find hidden water sources behind walls and under floors
Identify the underlying cause of the moisture (roof leak, plumbing failure, condensation, grading, etc.)
Decide whether mold sampling is actually needed (more on that below)
Educate you about the law and what comes next

A good assessor in the Hudson Valley or Capital Region will charge somewhere between $400 and $900 for a residential inspection, depending on the size of the property and whether sampling is involved.

A note on mold sampling

Most homeowners assume the assessor is going to take a bunch of swabs and send them to a lab. They usually don’t, and the state actually discourages it. The Department of Labor’s official position is that sampling is rarely useful because there are no national or state standards for what counts as “too much” mold, and sampling almost always finds some mold (it’s everywhere: outdoors, indoors, on your skin right now). Sampling has a place, mostly when occupants have a documented allergy to a specific species, but a good assessor won’t sell it to you by default.

What you actually need from the assessor is the next thing.

Step 2: The Mold Remediation Plan

This is the document that drives the rest of the project. By law, the assessor has to give you a written Mold Remediation Plan before any cleanup can start. It’s specific to your property and your project, and it has to include:

A description of the rooms and areas where remediation will be performed
An estimate of how much material will be cleaned or removed (e.g., “100 square feet of drywall in the basement”)
The specific abatement methods to be used in each area
Containment requirements (plastic barriers, negative air pressure, HEPA filtration)
Required personal protective equipment for the workers
Clearance criteria, meaning how the assessor will verify the work was successful
An estimate of cost and time for completion
Information on any EPA-registered disinfectants or antimicrobials being considered
The underlying source of moisture and what type of contractor can fix it

That last bullet is the one homeowners overlook. If you don’t fix the moisture source, the mold will come back. Every time. Roof leak, plumbing leak, grading issue, condensation on cold pipes: whatever the cause is, it has to be repaired before or during remediation. Mold remediation contractors aren’t legally required to fix the moisture source themselves (most don’t have the right trade licenses), but the plan will tell you what kind of contractor you need.

The Mold Remediation Plan is your legal protection. Once you have it, you can bring it to a licensed remediation contractor for an estimate, and the contractor will price the exact scope the assessor wrote, not a scope they made up themselves. That’s the second thing the law does for you that the old system didn’t.

Step 3: Hire a licensed mold remediation contractor

This is where KPM Restoration comes in. A Mold Remediation Contractor holds a separate license from the Department of Labor and employs licensed Mold Abatement Workers to do the physical work. We follow the assessor’s plan exactly. We don’t write the plan, we don’t get to argue with the plan, we don’t get to skip steps in the plan. That’s the law.

When you give us your Mold Remediation Plan, we’ll:

Visit the property and confirm we can do the work as written
Provide a detailed quote that maps line-by-line to the plan
Coordinate with whoever is fixing the moisture source (our water damage restoration crews can do most of that work in-house, or we’ll recommend a plumber or roofer for what we don’t)
Schedule the work around your assessor’s clearance availability

A lot of homeowners ask us to recommend an assessor before they’ve hired one. We can. We work with several independent licensed assessors across the Capital Region and Hudson Valley and we’ll give you a few names. We just can’t be one of them. By law, by ethics, and because we want to keep our license.

What “two separate companies” actually means

It’s not enough that the assessor and remediator have different names on the truck. Per §936, no person can own an interest in both the assessment licensee and the remediation licensee on the same property. That’s the legal line. The point is that the company writing the scope and the company performing the work shouldn’t share ownership in a way that lets one of them control the other on the same job.

Legitimate operators take this seriously because the consequences are real. Lose the license, lose the business.

Step 4: Containment, removal, and cleanup

Here’s what actually happens on the job. Most residential projects take three to five days of active remediation work, give or take depending on scope.

Day 1: Containment

Before we touch any mold, we seal the work area off from the rest of your home. That means:

6-mil polyethylene sheeting taped to floor and ceiling at every entry point
Negative air pressure inside the containment, maintained by HEPA-filtered air scrubbers
Air locked entry/exit zones for workers
Sealed HVAC vents in the affected area so spores don’t ride your ductwork to clean rooms
Posted signage at every entrance, required by the law

Containment is the difference between a $4,000 mold job and a $40,000 cross-contamination disaster. Spores released without containment will travel through the entire house and you’ll be remediating bedrooms upstairs you never had to before.

Day 2–3: Removal and cleaning

Inside the containment, the work is straightforward but careful:

Porous contaminated materials (drywall, insulation, carpet pad) come out and get bagged
Non-porous surfaces (framing studs, subfloor, concrete) get HEPA vacuumed, then wet-wiped with antimicrobial
Everything gets a second HEPA pass after drying
An EPA-registered disinfectant gets applied if the assessor’s plan calls for it (and only if)

We document each step with photos for the assessor and for your records.

Day 4: Drying and pre-clearance prep

Before the assessor comes back, the area has to be visibly clean, fully dry, and ready for inspection. Containment stays up. We don’t pull the plastic until the assessor signs off.

Step 5: Clearance testing and the passed clearance report

Clearance testing is technically optional. New York doesn’t force you to have a post-remediation assessment, and if you decide to skip it, the assessor and contractor will document that you accepted the work as-is before they leave. That said, you’ll especially want clearance done if insurance is covering the project or if the property is part of a real estate deal. The passed clearance report is the document those parties will ask for.

The same assessor who wrote the plan should come back to verify the work. They don’t have to (you can use a different licensed assessor), but most homeowners use the original one because they already know the property.

The post-remediation assessment includes:

Visual inspection inside the containment for any visible mold
Verification that everything in the original plan was actually done
Air sampling, if the plan called for it (most plans don’t, but some do)
A check that the moisture source was addressed

If everything checks out, the assessor issues a written passed clearance report. The project is officially complete. Containment comes down. We schedule reconstruction (drywall, insulation, paint) at your convenience. Reconstruction goes after clearance, not before. Installing new drywall over an unverified remediation can cover up unresolved contamination, and you’ll find out the hard way.

If something failed (wrong materials missed, a spot of mold remaining, moisture source not fixed), the assessor issues a final status report instead, listing what still needs to happen. The remediation contractor is responsible for going back and fixing it. If the work was done according to plan and it still failed clearance, that’s on the contractor to make right at no additional cost to you. That’s another thing the law gets right.

How to verify a contractor is actually licensed

Both your assessor and your remediator should be able to give you a NYS Mold License number on request. You can verify any licensee in the state directly through the Mold Contractor Licenses dataset on the NY Open Data portal, published by the Department of Labor. It takes about 30 seconds. If a contractor can’t or won’t share their license number, that’s the entire conversation. Move on.

A few things to ask any company you’re considering, before you sign anything:

“What’s your NYS Mold License number?”
“Do you also perform mold testing or clearance for the same project?” (If yes, walk away.)
“Will you give me the written remediation plan before work starts?”
“If clearance fails because of something on your end, who pays for the rework?”

A licensed, ethical contractor answers all four without hesitation. KPM holds a Mold Remediation Contractor License under NYS Labor Law Article 32 and our technicians carry IICRC AMRT (Applied Microbial Remediation Technician) certifications.

What it costs and how long it takes

Real ranges, based on what we see across the Capital Region and Hudson Valley in 2026:

Project size	Typical cost	Timeline
Small	$1,500–$3,500	1–2 days
Medium (basement walls, single room)	$3,500–$8,000	3–5 days
Large (multi-room, attic, finished basement)	$8,000–$20,000+	5–10 days
Add: Mold assessment	$400–$900	1 day on-site, 2–3 days for plan
Add: Clearance testing	$300–$600	1 day on-site, 1–2 days for results
Add: Reconstruction	Varies	Scheduled after clearance

Insurance is a separate question. Homeowners policies generally cover mold only when it results from a covered peril like a burst pipe, and most policies cap mold coverage at $5,000 to $10,000 even then. Mold from gradual leaks, humidity, or maintenance issues is typically excluded. We help document the cause for insurance claims when there’s a defensible covered event.

One thing that changed in 2023: New York amended its Property Condition Disclosure Statement to require sellers of residential real estate to disclose known indoor mold conditions. If you’re remediating before a sale, hold onto your passed clearance report. It’s the document that proves the issue was professionally resolved and it can save the deal.

What documents you should receive

Keep a folder. By the time the project is finished, you should have all of the following:

The mold assessment report from your licensed assessor, including their findings and any sampling results
The written Mold Remediation Plan from the assessor, before any cleanup begins
The Mold Remediation Work Plan from the contractor, before site preparation begins
Photos of the work area at containment, mid-job, and at completion
The post-remediation assessment report and a written passed clearance report from the assessor
A reconstruction estimate if rebuild work is part of the project

These documents matter beyond the job itself. Insurance carriers ask for them. Real estate attorneys ask for them at closing. Future buyers’ inspectors ask for them. Tenants in landlord disputes ask for them. If a contractor finishes and walks away without leaving you documentation, you don’t have proof the work happened. Treat the paperwork as part of the deliverable, not an afterthought.

Get a free consultation

If you’ve found mold in your home in the Capital Region or Hudson Valley and want help thinking through next steps, call KPM Restoration at (518) 859-9769. We’re a NYS Licensed Mold Remediation Contractor with offices in Mechanicville, Albany, Schenectady, Queensbury, Colonie, Poughkeepsie, Newburgh, and Kingston. We can recommend independent licensed assessors and walk you through what to expect, at no charge.

We do the remediation. We don’t do the assessment. That’s how the law works, and that’s how we keep it honest.