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H 4024

An Act relative to a study to determine standards of mold levels in multi-unit dwellings

194th Legislature (2025-2026) Introduced by Bruce Ayers

Massachusetts bill mandates a study to establish and enforce specific mold contamination standards for multi-unit apartment buildings to protect tenant health and define landlord obligations.

Accompanied a study order, see H5234
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Bill Summary · H 4024

Legislative bill overview

H 4024 establishes a study commission to develop enforceable mold level standards for multi-unit residential dwellings in Massachusetts. The bill directs relevant state agencies and health experts to investigate acceptable mold thresholds and create guidelines for landlords and tenants.

Why is this important

Mold in apartments poses health risks—particularly for children, elderly residents, and those with respiratory conditions—yet Massachusetts currently lacks specific legal standards for mold contamination in rental properties. Establishing clear standards would create accountability for property maintenance, inform tenant rights, and provide objective benchmarks for enforcement.

Potential points of contention

  • Cost burden on landlords: Implementing mold remediation to new standards could require significant property investments, potentially raising rents or reducing rental supply in tight markets
  • Standard-setting complexity: Mold thresholds vary by type, location, and health sensitivity; establishing one-size-fits-all standards may be either too strict or insufficiently protective depending on circumstances
  • Enforcement mechanisms unclear: The bill orders a study but doesn't specify who enforces standards, how violations are penalized, or whether remediation timelines are realistic for building owners

Compiled from official sources — confirm details with the bill’s official record.

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