Bond in lieu of cash retainage on private Colorado construction — mandatory acceptance, like-bond cascade, and A− rating ceiling under HB26-1311 (Ch. 129).
Education only / verify at source / not legal or placement advice. Statutes, session laws, board rules, and bond forms change. Global Guarantors publishes industry education — not premiums, quotes, brokerage, or legal advice. Confirm primary sources and licensed counsel before you rely on anything here.
Start here: Contract surety primer · Surety 101 · Related: SB26-074 payment bond claims · Glossary · FAQ
Retainage is unpaid contract money held back as security for punch-list completion, defect correction, and related performance risk. Even at a modest percentage, retainage on a large private job can lock up substantial cash for months. Owners and lenders treat that holdback as protection; contractors and subcontractors treat it as working capital they cannot deploy.
Colorado’s private retainage statute already capped how much could be withheld. House Bill 26-1311 adds a different tool: a retainage surety bond that a contractor or subcontractor may tender in lieu of cash retainage. When the bond meets the act’s standards, the property owner (or upstream contractor) must accept it and release the retainage covered by the bond.
That swap changes cash flow without eliminating security. The obligee (the party accepting the bond) keeps a three-party surety bond behind the work. The principal (the contractor or subcontractor posting the bond) gets cash released. The surety stands secondarily behind the bonded obligation, typically with a general agreement of indemnity behind the scenes — the same credit-style structure described in Surety 101 and the contract surety primer.
This page is education for brokers, general contractors, subcontractors, owners, and lenders who are searching “retainage bond Colorado” after the law’s effective date. It is not a form specimen, a premium schedule, or a substitute for reading the enrolled act.
Per the Colorado General Assembly bill page and Chapter 129 of the 2026 session laws:
| Fact | Official finding |
|---|---|
| Short title / subject | Concerning the use of a bond in lieu of retainage in construction contracts |
| Status | Became law |
| Governor signed | May 7, 2026 |
| Chapter | 129 |
| Effective date (as published) | August 12, 2026 |
| Applicability | Contracts created on or after the applicable effective date of the act |
The official enacted bill summary states that under Colorado law a private property owner is prohibited from retaining more than 5% of a construction contract as retainage if the contract is at least $150,000; the act authorizes a contractor to submit a retainage bond in lieu of withholding retainage; and a private property owner must accept a qualifying retainage bond and not withhold that retainage.
Section 3 of Chapter 129 also carries Colorado’s standard referendum-petition effective-date language. What to verify at the source: if a referendum petition were filed against the act within the constitutional window, effective timing could shift — confirm live C.R.S. / General Assembly status before you treat a specific contract as covered.
HB26-1311 amends C.R.S. Title 38, Article 46 (private construction retainage). It does not invent retainage from scratch.
Existing architecture (confirm live Article 46 at draft/publish time):
The new bond-in-lieu mechanics sit inside that same article. If Article 46 does not apply to a project type, the new retainage-bond tender right in § 38-46-103(1)(b) does not either.
Chapter 129 adds definitions to C.R.S. § 38-46-101:
“Retainage bond” means a surety bond issued by an insurer licensed to issue the bond in Colorado, as assurance for the person accepting the bond that:
“Like bond” means a retainage bond submitted by a subcontractor to a contractor or subcontractor that is substantially equivalent to the retainage bond submitted by the contractor or subcontractor to the property owner or contractor.
In lieu of retainage, a subcontractor or contractor may tender a retainage bond in an amount not to exceed five percent of the money earned by that subcontractor or contractor. If the tender meets the statute’s requirements, the property owner, contractor, or subcontractor shall accept the retainage bond and release the retainage covered by it.
To comply, the tendering contractor or subcontractor must provide a bond meeting the surety-standards subsection and must:
The subcontractor’s or contractor’s bond — and proceeds from the bond — are subject to claim and lien in the same manner and priority as set forth in Article 22 of Title 38 (Colorado’s mechanic’s lien article). That cross-reference matters for claim priority education; it is not a substitute for lien counsel.
Education takeaway: a retainage bond is still a three-party surety instrument. It is not a traditional two-party insurance policy priced for expected losses. Underwriting remains credit-style: character, capacity, capital, and the indemnity agreement behind the bond. See surety vs insurance + indemnity.
The operational sequence in Chapter 129 is clearer than many secondary summaries:
Secondary firm alerts sometimes paraphrase the cascade differently (for example, emphasizing “regardless of subcontract value”). Stick to the enrolled text: the like-bond duty is triggered when the owner has accepted the contractor’s retainage bond, and the subcontractor tenders a like bond under subsection (1)(b).
Chapter 129 is explicit about what an owner or contractor may demand of the surety:
Read that ceiling carefully. It is a statutory cap on how selective the obligee may be when setting a minimum rating floor. It is not a Global Guarantors rating claim, not an underwriting promise, and not advice to prefer any carrier. Always verify licensing and any contract-specified rating floor against the live bond and the obligee’s documents.
Private construction contracts and subcontracts that already sit inside Article 46 — typically owner–contractor contracts at or above the $150,000 applicability threshold, with related lower-tier work — where a party elects to tender a qualifying retainage bond on or after the act’s applicability date.
Subsection (1)(b) does not apply to a contract or subcontract that concerns property owned by a public entity. That exemption includes a contract or subcontract that results from a public-private partnership (P3).
Public owners and P3 structures generally stay on their own procurement / Little Miller / Article 26 paths — not this private retainage-bond swap. For Colorado public payment-bond claim education, see the companion page on SB26-074.
C.R.S. § 38-46-102 already provides that Article 46 does not apply to a single contract that governs the building of either one single-family dwelling or one multifamily dwelling with no more than four family dwelling units. Because the retainage-bond option lives inside Article 46, those project types remain outside the article’s retainage (and bond-in-lieu) framework unless the statute is later amended. Confirm the live § 38-46-102 text on publish day.
Timing. Chapter 129 states the act applies to contracts created on or after the applicable effective date (published as August 12, 2026, subject to the act’s referendum language). Education framing: update private Colorado templates for post-effective-date contracts; do not assume the statute rewrites every pre-existing agreement.
Claims process. The enrolled act does not publish a detailed retainage-bond claim flowchart. Cure procedures, notice, and draw mechanics will largely come from the bond form, the construction contract, and later court interpretation. Do not invent a GG claim schedule.
Retrieved or confirmed 2026-10-06 (PT). High-level cites; no full bond wording republished.
