Owner Consent to Tenant Improvements: Lessons from Americon

Reviewed September 7, 2026.

Work ordered by a tenant does not automatically create a mechanic’s lien against the landlord’s interest. The claimant must establish the owner’s consent or request within Lien Law § 3.

In Americon Construction Inc. v. Radu Physical Culture, LLC, 93 A.D.3d 580 (2012), the First Department affirmed a foreclosure judgment. The proof included a lease contemplating the improvements, the owner’s approval of the contractor and plans, owner-obtained permits, active participation in site meetings, communications helping start construction, and the owner’s subsequent benefit from the improved space.

These facts worked together. The case does not make a landlord’s passive knowledge, a routine approval or receipt of some benefit alone sufficient in every dispute.

Preserve evidence of authorization

Keep the lease and alteration agreement, written approvals, permit records, plans, meeting minutes and communications identifying who authorized the work. Confirm the owner’s identity and the authority of anyone purporting to act as its agent.

Consent to an improvement is also distinct from an owner’s personal promise to pay the tenant’s contractor. Lien validity, the available lien fund, payment obligations and any direct contract claims must each be evaluated.

Kushnick Pallaci PLLC assists clients throughout New York with mechanic’s lien enforcement and defense. Contact 631-752-7100 or vtp@kushnicklaw.com.

Attorney Advertising. General information, not legal advice.