LANDLORD GUIDE · NEW MEXICO
Reviewed November 13, 2026
For an existing private residential tenancy. Fixed-term changes, assisted housing, mobile-home spaces and required local forms need a separate review. This guide explains selected rules; it is not a coverage determination or legal advice for a particular property.
Thirty days before the periodic rent date
New Mexico's enacted 2025 amendments to §47-8-15 require written notice at least 30 days before the periodic rental date for an increase in a month-to-month tenancy. Review the rental agreement for longer notice and for the actual tenancy term. A fixed lease remains a different situation even when rent is paid monthly.
Use the periodic rent date as the target rather than choosing an arbitrary date 30 days after drafting. The tool rounds to a later monthly cycle, but that output cannot establish valid service or authority to change a contract.
[1] New Mexico Legislature - enacted 2025 amendments, §47-8-15
Review fees as part of the proposal
The amended statute addresses rent and fee disclosures and changes. Make the new monthly obligation understandable: identify rent and any separately proposed fee, and explain what remains unchanged. Do not add a surprise mandatory charge through a portal while the notice displays only base rent.
Keep an old-versus-new charge list and the agreement authorizing each item. For subsidized or income-restricted housing, confirm program approval and utility-allowance rules separately. The ordinary form does not calculate an approved program rent.
[1] New Mexico Legislature - enacted 2025 amendments, §47-8-15
Example: the fifth is the relevant date
If the monthly rental date is the fifth and a proposal is delivered only 20 days before the next fifth, select a later eligible fifth instead of charging immediately after the 30th day on a different date. For a change from $1,250 to $1,312.50, the difference is $62.50 or 5%. Use the exact new dollar amount and a clear first payment date.
[1] New Mexico Legislature - enacted 2025 amendments, §47-8-15
Document the change before collection
Save the lease, the revised terms, the completed notice and proof of delivery. Check that the accounting system and any new agreement use the same amount and effective date. If the tenant questions a fee or timing, resolve the legal basis before labeling the proposed difference unpaid rent. The courts' landlord-tenant resources are a starting point for separate disputes; this letter is intended to continue, not terminate, the tenancy.
[1] New Mexico Legislature - enacted 2025 amendments, §47-8-15
Official sources and updates
Dated caps apply only to the periods stated. Check the official sources before preparing a later increase.