General liability excludes pollution, which is a problem for mold, asbestos, and abatement work

You hire a mold remediation contractor because a unit has a water intrusion problem that got away from you. They do the work. Eighteen months later the resident sues, alleging the remediation was incomplete and they got sick.

The contractor's $2,000,000 general liability policy very likely excludes the claim entirely, on two separate grounds.

The pollution exclusion is broader than the word suggests

Standard commercial general liability contains an absolute pollution exclusion. "Pollutant" is defined as any solid, liquid, gaseous, or thermal irritant or contaminant.

Courts have read that definition to cover things most people would not call pollution. Mold and fungi, in most policies now through a specific fungi and bacteria exclusion. Asbestos and lead, typically excluded separately. Carbon monoxide. Sewage. Silica dust.

So the trades where a contamination claim is most likely are the trades whose standard policy excludes contamination claims. That is not an accident or an oversight by the carrier. It is a deliberate market structure, and the coverage exists as a separate product.

Contractors pollution liability is the product that fills it

Contractors pollution liability covers third-party bodily injury, property damage, and cleanup costs arising from a pollution condition caused by the contractor's operations.

Three things to know when reading one.

It is almost always claims-made rather than occurrence. That means the policy responds based on when the claim is reported, not when the work was done. A remediation contractor who lets the policy lapse a year after finishing your job has no coverage for a claim reported after the lapse, even though the work happened while insured.

The retroactive date is the field that matters most. A claims-made policy with a retroactive date of last month covers nothing that happened before last month. A vendor who changed carriers and got a fresh retro date has quietly dropped coverage for every job they have ever done for you.

Completed operations coverage has to be present. Pollution claims surface late. A policy covering only ongoing operations closes the day the crew leaves.

Professional liability covers the advice, not the labor

The second exclusion in the mold scenario is subtler.

General liability covers bodily injury and property damage from operations. It does not cover economic loss from a professional error. If the contractor wrote a remediation protocol and the protocol was wrong, that is a professional services failure, and GL policies exclude professional services.

The trades where this matters in property management:

Environmental consultants who write scopes and do clearance testing. This is pure professional liability, and the clearance letter is the deliverable that gets sued over.

Engineers and architects on capital work. Standard requirement, usually handled.

Mold and asbestos contractors who both design and execute. This is the dangerous combination, because the design part is professional and the execution part is not, and one policy rarely covers both cleanly.

Property condition assessors and energy auditors, where the entire product is a report somebody relied on.

For design-build arrangements, a contractors professional liability policy is the product that covers both sides. Requiring it by name for any vendor who designs what they then build is worth doing, because splitting the coverage across two policies leaves a seam that a plaintiff will find.

Third-party clearance is the control that outperforms insurance

Worth saying, since the goal is not to collect certificates.

On any abatement or remediation job, having the clearance testing done by an independent party rather than by the contractor who did the work is a stronger protection than the contractor's insurance. It removes the conflict of interest from the only document that says the job was finished correctly.

It also gives you a second insured party with professional liability standing behind that document, which is the thing you actually want eighteen months later.

Requirements have to vary by trade or they are wrong twice

A single portfolio-wide insurance requirement is simultaneously too heavy for a landscaper and too light for an asbestos abatement contractor.

Trades that need pollution coverage: mold remediation, asbestos and lead abatement, environmental consulting, waste hauling, fuel delivery, pest control, pool chemical service, tank work, and any excavation that could hit contaminated soil.

Trades that need professional liability: engineers, architects, environmental consultants, property condition assessors, and any design-build arrangement.

Trades where neither is necessary: most landscaping, general cleaning, most interior painting, and appliance repair.

Getting that mapping right is the difference between requirements that protect you and requirements that make good vendors decline to bid.

Where IDCore helps and where it does not

Requirement sets are configurable per trade, so mold remediation can require contractors pollution liability with completed operations while landscaping does not. The AI reads the certificate against the applicable set and surfaces the specific failed check.

Two limits worth stating. The retroactive date on a claims-made policy is sometimes on the certificate and often is not, and when it is absent no reader can extract it. And whether a specific pollution form actually covers the specific work you contracted for is a coverage opinion, which belongs to your broker rather than to a compliance platform.

The related fact that makes the trade-specific requirement usable rather than aspirational: when a vendor comes back non-compliant, coverage can be placed in the flow rather than sending them off to find it. ResProp's project manager sourced a mold remediation vendor and got them verified faster than they had managed before, and the reason it worked was that the gap got closed instead of reported. That is the part of this that changes an outcome.

Audit one trade

Pull your requirement set for mold remediation or asbestos work, whichever you use more.

Check whether it names contractors pollution liability, whether it requires completed operations coverage, and whether it requires the coverage to be maintained after the job ends.

If it is the same requirement set you use for landscaping, that is the finding.

What does yours say?