Generally, the commercial real estate market operates on the doctrine of caveat emptor ("let the buyer/lessee beware"). Under the Connecticut General Statutes (C.G.S.), which have served as the foundation of property law since 1818, commercial tenants are viewed as sophisticated business entities, and Connecticut state law mandates very few specific consumer-level disclosures for commercial property leases.

The heavy lifting of due diligence falls almost entirely on the commercial tenant before they sign the lease. However, there is one massive exception: Environmental Liability.

Under Connecticut law, environmental disclosures for commercial properties are no longer governed by the Connecticut Transfer Act (C.G.S. § 22a-134 et seq.). The Transfer Act sunsetted on March 1, 2026, and has been replaced by the Release-Based Clean Up Regulations (RBCRs).

Key provisions of the Release-Based Clean Up Regulations (RBCRs) include:

• Trigger for Obligations: Environmental investigation and remediation obligations are now triggered by the discovery of actual environmental conditions (releases) to the land and waters of the state, rather than by real estate transfers or the property meeting the definition of an "Establishment."
• Reporting Requirement: A release must be reported, investigated, and remediated once it is discovered, regardless of whether the property is an "establishment" and independent of any transfer.
• Applicability: The RBCRs apply to all property in the state (subject to exemptions) rather than being limited to a specific subset of commercial and industrial properties.
• Responsible Parties: The reporting requirement applies to the owner and anyone who controls the parcel, as well as the person or entity creating the release.
• Scope of Investigation: The RBCRs track individual releases and do not necessarily require site-wide investigations, which was a characteristic of the former Transfer Act.

While not legally mandated by the state for leasing, commercial tenants are still strongly advised to conduct a Phase I Environmental Site Assessment (ESA) during their due diligence. This practice helps establish a baseline defense against potential environmental liability and is heavily demanded by banking lenders. Landlords who conceal known historical contamination may still face significant liability under common law fraud and federal CERCLA (Superfund) laws. See our Connecticut Commercial Lease GuidePreview unavailable for incorporating these protective clauses.

Official Law Citation: Statutory authority is derived from the Release-Based Clean Up Regulations (RBCRs) and the Real Estate Brokerage Disclosure requirements under C.G.S. § 20-325d.

Brokerage Agency Disclosures

If the commercial property is being leased with the assistance of licensed real estate agents or brokers, C.G.S. § 20-325d requires the agents to disclose whom they represent early in the transaction.

• A broker representing the landlord must disclose this relationship to the prospective tenant.
• Dual agency (holding a fiduciary duty to both the landlord and tenant) must be explicitly disclosed in writing and consented to by both parties per C.G.S. § 20-325g.

How Landager Helps

Landager continually tracks lease terms, required compliance items, and strict escrow accounting records - making it easy to fundamentally stay heavily compliant with Connecticut regulations.

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