If you're a New Mexico contractor dealing with delayed payments, withheld retainage, or a GC or owner who won't pay, you have statutory rights you may not know about. Here's how to use them.
New Mexico's Prompt Payment Act establishes specific deadlines for payment at every tier of the construction chain. These aren't suggestions — they're statutory requirements, and violations carry real consequences.
Owners must make progress payments to contractors within 21 days of receiving an undisputed invoice. If the owner believes the invoice is incomplete or inaccurate, they have 7 days to notify the contractor with specific details about the problems. They can't simply sit on the invoice and claim it was deficient months later.
Final payment to the prime contractor is due within 10 days of certification of project completion.
General contractors must pay subcontractors within 7 days of receiving payment from the owner. Subcontractors must pay their suppliers within 7 days of receiving payment from the GC. The obligation flows down the chain — each tier has 7 days once they receive funds from above.
Late or wrongfully withheld payments accrue interest at 1.5% per month — that's 18% annualized. On a $50,000 invoice delayed for six months, the interest alone is $4,500. And in an enforcement action, the court may award costs and reasonable attorney fees to the prevailing party.
The Prompt Payment Act only works if your invoicing is clean. If your invoice is missing required information or doesn't comply with the contractual invoicing requirements, the clock doesn't start. This is where many contractors lose — not because the law doesn't protect them, but because their invoicing practices give the other party a legitimate reason to delay. Get your invoicing procedures right and the statute does the heavy lifting.
A mechanic's lien is a security interest in the property where you performed work. It's the most powerful payment tool available to a New Mexico contractor because it puts a cloud on the owner's title — they can't sell or refinance the property until the lien is resolved. That's leverage no demand letter can match.
Anyone who provided labor or materials for the improvement of real property in New Mexico can file a mechanic's lien, including general contractors, subcontractors, and material suppliers. But there's one critical prerequisite that trips up many contractors.
The deadlines are strict and missing them means losing your lien rights entirely — there is no cure for a late filing.
A mechanic's lien must include specific information identified in NMSA 1978, § 48-2-6, including the nature of the claim, the amount owed, and a description of the property. New Mexico allows substantial compliance with these requirements, but the lien must be verified by oath — an unsworn lien is invalid regardless of its content.
Here's what most contractors miss: your lien rights and your contract terms are interconnected. A poorly drafted lien waiver can extinguish your lien rights before you even realize it. Conditional vs. unconditional lien waivers, progress vs. final — the wrong form at the wrong time can cost you your most powerful enforcement tool. If your contracts and lien waivers haven't been reviewed by a New Mexico construction attorney, you may be signing away your rights on every payment application.
If you're currently dealing with a payment dispute, here's the practical sequence:
First, check your license status. If your CID license wasn't current when you performed the work, your enforcement options are severely limited. Address this before anything else.
Second, review your contract's notice provisions. Many contracts require written notice of a claim within a short window — 7 to 14 days. If you haven't sent formal written notice, do it now. Don't rely on phone calls or emails that don't explicitly state you are making a claim for payment.
Third, calendar your lien deadline. Count 90 days (or 120 if you're the prime) from substantial completion. If that date is approaching, file the lien first and negotiate second. A lien can be released; a missed deadline cannot be fixed.
Fourth, document everything. Invoices, delivery tickets, daily logs, emails, text messages confirming scope changes — all of it. Payment disputes are won or lost on documentation.
Fifth, get your contracts reviewed before the next project. The best time to fix a payment problem is before it happens. A properly drafted contract with NM-compliant payment terms, notice provisions, and lien waiver language prevents the dispute you're dealing with right now from happening again.
Schedule a free 15-minute consultation to discuss your options — including lien rights, prompt payment claims, and how to fix the contract terms that let this happen.
Schedule Your Free ConsultationDon't wait for the next payment dispute. For $2,495, I audit your entire contract suite and deliver a written Contract Health Report showing exactly where you're exposed — including your payment terms, lien waiver language, and notice provisions. If you want me to fix what I find, the diagnostic fee credits in full toward a complete contract rebuild at $7,995.
Under the Prompt Payment Act, owners must pay contractors within 21 days of receiving an undisputed invoice for progress payments. Final payment is due within 10 days of certification of project completion. If the owner determines the invoice is improperly completed, they must notify the contractor within 7 days.
Subcontractors and suppliers without direct privity with the owner must file within 90 days after substantial completion. Contractors in direct privity with the owner have 120 days. A certificate of occupancy is prima facie evidence of substantial completion.
No. Under NMSA 1978, § 60-13-30, unlicensed contractors may not file a mechanic's lien or maintain a lawsuit for payment for unlicensed work. Your CID license is a prerequisite to enforcing your contractual rights.
1.5% per month (18% annualized) under the Prompt Payment Act. The court may also award costs and reasonable attorney fees in an enforcement action.
No. Mechanic's liens apply to private property only. For public projects, your remedy is a bond claim against the contractor's payment bond. The procedures and deadlines differ from private lien rights.
Attorney Advertising. The information on this page does not constitute legal advice. Past results do not guarantee future outcomes, as each case must be decided on its own merits. The responsible attorney is Matthew J. Bouillon Mascareñas, Albuquerque, NM. © 2026 Law Office of Matthew J. Bouillon Mascareñas LLC.