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New Mexico Residential Lease Security Deposits

Last updated: 8 April 2026 · BeforeYouSign Editorial Team

New Mexico's Uniform Owner-Resident Relations Act (NMSA 1978 §§ 47-8-1 to 47-8-52) sets clear rules for security deposits. For leases of less than one year, landlords cannot demand more than one month's rent. For leases of a year or more, no statutory cap applies — but deposits exceeding one month's rent must earn annual interest equal to the passbook savings rate. Deposits must be returned with an itemisation within 30 days of termination. Before signing, make sure the lease documents the deposit amount and your move-in condition.

What is a Security Deposit?

A security deposit in New Mexico is governed by NMSA 1978 § 47-8-18. It is money held by a landlord to secure tenant performance and cover rent arrears or damage at move-out.

Red flags to watch for

Deposit exceeds one month's rent on a lease of less than one year

§ 47-8-18(A) caps deposits at one month's rent for leases under one year.

Deposit over one month's rent with no annual interest on leases of one year or more

§ 47-8-18(A)(2) requires annual interest equal to the passbook savings rate on deposits exceeding one month's rent for long-term leases.

No 30-day return deadline acknowledged in the lease

§ 47-8-18(C) requires return with itemisation within 30 days after termination.

Nonrefundable fees disguised as part of the security deposit

Nonrefundable fees must be clearly distinct from the refundable security deposit, or they risk being treated as part of the deposit for § 47-8-18 purposes.

Waiver of Uniform Owner-Resident Relations Act rights

§ 47-8-15 voids any waiver of statutory tenant rights.

No signed move-in condition statement

A documented condition statement is the tenant's best defence against unreasonable deductions at move-out.

Your legal rights

NMSA 1978 §§ 47-8-1 to 47-8-52 (Uniform Owner-Resident Relations Act) govern New Mexico residential tenancies. § 47-8-18 addresses security deposits: cap for short leases, interest for long-lease excess deposits, 30-day return and itemisation, and double damages plus attorney's fees for bad-faith violations. New Mexico Metropolitan and Magistrate Courts enforce. The Attorney General's office receives complaints.

Questions to ask before you sign

  • 1Does the deposit exceed one month's rent for a lease under one year?
  • 2If my lease is over a year and deposit exceeds one month, what interest will I earn?
  • 3When will my deposit and itemisation be returned after I vacate?
  • 4Are there any nonrefundable fees, and how are they labelled in the lease?
  • 5Does the lease waive any URORA rights I should be aware of?
  • 6Can we complete a signed move-in condition statement?

Disclaimer: This guide is for educational purposes only and does not constitute legal advice. Contract law varies by jurisdiction and individual circumstances. Always consult a qualified legal professional before making decisions based on this information.

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