A security interest grants a lender rights in collateral under UCC or real property law. It secures obligations beyond mortgages and is essential in CRE lending.
A security interest is a legal right granted by a borrower to a lender in personal property or specific rights to secure repayment of an obligation. In commercial real estate finance, security interests commonly attach to fixtures, equipment, accounts receivable, and leaseholds and are governed by Article 9 of the Uniform Commercial Code for personal property, while real estate interests rely on mortgages or deeds of trust. Creation requires an agreement and usually perfection through filing a UCC-1 financing statement or recording an instrument when statutes require.
Lenders use security interests to capture collateral that complements a mortgage, such as tenant leases, management contracts, or building systems that are not fully conveyed by a deed of trust. Sponsors must be aware of when a real property interest becomes a fixture subject to the mortgage versus a UCC security interest. Closing checklists should include appropriate security agreements, UCC filings, and fixture filings where required. Coordinating filings avoids priority surprises and ensures lender protections remain effective after acquisition or refinancing.
Security interests broaden the lender’s recovery options beyond real estate and are critical in complex capital structures where personal property or contract rights have significant value. Proper creation and perfection determine priority against other creditors, influence refinancing ability, and affect enforcement remedies. Failure to properly perfect a security interest can make a lender unsecured with respect to certain assets, reducing recovery in default. For borrowers, these filings can restrict asset transfers and influence future borrowing capacity, so clear documentation and disclosure are essential.