Cantabria Landlord-Tenant Laws: COMMERCIAL SECURITY DEPOSITS

The security deposit for commercial premises, known as the fianza, is a mandatory statutory requirement in Cantabria. Under Article 36 of the Ley de Arrendamientos Urbanos (LAU) (effective 1 January 1995), commercial tenancies (uso distinto del de vivienda) require a two-month deposit. Notably, since the enactment of Ley 9/2017, de 26 de diciembre, Cantabria has abolished the requirement to deposit these funds with a regional administrative body, meaning landlords retain private custody of the security deposit while remaining liable for its eventual return.

Mandatory Two-Month Deposit

Unlike residential tenancies, which only require one month, all commercial leases in Cantabria must involve a security deposit equivalent to two months' rent. This amount is fixed by the LAU and cannot be reduced by agreement. Its purpose is to provide a baseline guarantee for the landlord against breaches of contract or damage to the premises.

• Additional Guarantees: Beyond the statutory two-month fianza, and governed by the principle of freedom of contract (autonomía de la voluntad), the parties are free to negotiate additional security measures, such as a bank guarantee (aval bancario) or an additional cash deposit. These extra measures are not subject to the statutory rules governing the fianza.

No Administrative Deposit in Cantabria

Unlike most other Spanish autonomous communities (such as Madrid or Catalonia), the Government of Cantabria does not currently maintain a public registry for security deposits.

• Abolition of Mandate: Prior to 2017, landlords were required to deposit the fianza with the regional treasury. However, Ley 9/2017 removed this administrative burden.
• Private Custody: The landlord is solely responsible for holding the security deposit funds during the term of the lease. They must ensure the funds are available for refund upon termination, provided the tenant has fulfilled all obligations.
• Tenant Rights: Despite the lack of a public deposit, the tenant maintains all legal protections. The landlord is legally prohibited from using the fianza for general business expenses or personal use.

Return and Dispute Resolution

At the end of the commercial lease, the landlord has a period of one month from the return of the keys to refund the fianza.

• Interest Accrual: If the refund is delayed by more than 30 days without justification, legal interest begins to accrue against the landlord under LAU Article 36.4.
• Justified Deductions: Deductions from the fianza are permitted for unpaid rent, outstanding utility bills, or repairs needed due to damage beyond normal wear and tear. All deductions must be backed by invoices and shared with the tenant.
• Forum for Disputes: Any litigation regarding the return of the fianza for commercial premises is handled by the Juzgado de Primera Instancia in the judicial district where the property is located.

Fiscal Implications

Even though the fianza is not deposited publicly, it remains a critical element for fiscal compliance. Landlords in Cantabria must still account for the deposit in their financial records. Furthermore, the commercial rent itself is subject to VAT (IVA), though the fianza itself is calculated based on the net monthly rent (base rent) and does not include tax.