If you own a home in Colorado — or you're a contractor who hasn't been paid — the phrase "mechanic's lien" carries weight. A properly recorded lien clouds title, blocks sales and refinances, and can ultimately force the sale of the property. An improperly recorded one can expose the filer to slander-of-title liability.
This guide explains the entire Colorado mechanic's lien process in one place: who can file, where they have to file, how they file, what deadlines apply, and what defenses homeowners have when one shows up against their property. It covers Colorado's Mechanic's Lien Act — codified at C.R.S. §§ 38-22-101 through 38-22-133 — and is written for homeowners. Contractors and subcontractors will also find the procedural detail useful, but the perspective throughout is the homeowner's. If your situation may involve these issues, a Colorado mechanic's lien attorney at Hollington Law Firm can review the facts in a consultation.
If you are facing a lien right now and need to act, jump to the [defense and dispute section](#disputing-a-lien) below.
What a Mechanic's Lien Actually Is
A mechanic's lien is a statutory security interest in real property. It does not require a court judgment. The lienholder simply records a written lien statement in the county where the property sits, and from that moment forward the property cannot be cleanly sold, refinanced, or transferred until the lien is released, paid, bonded around, or expires by operation of law.
Two features make Colorado liens powerful:
In-rem effect. The lien attaches to the property itself, not to the homeowner personally. Even if the homeowner never met the lien claimant, the lien can still encumber the home.
Foreclosure remedy. If the claimant follows the procedural rules, the lien can be foreclosed in the same manner as a mortgage — meaning a forced judicial sale of the property to satisfy the debt.
Because of that power, Colorado courts treat mechanic's liens as extraordinary remedies. They are construed strictly against the claimant and in favor of the property owner. Small procedural mistakes — a wrong county, a missed deadline, a defective notice — can void the lien entirely.
Who Can File a Mechanic's Lien in Colorado
Under C.R.S. § 38-22-101, Colorado extends lien rights broadly to anyone who improves real property. "Improve" is the operative word — the statute protects people who add tangible value to the property, not people who provide adjacent services.
Parties who generally have lien rights:
General contractors and builders who performed work or supplied materials. Lien rights are not automatic; a contractor who never began work or who has been paid in full has no enforceable lien.
Subcontractors of every trade — electricians, plumbers, HVAC, framers, drywallers, roofers, concrete, finish carpenters. Subcontractor liens are the most common because subs depend on upstream payment.
Material suppliers who delivered materials that were actually incorporated into the project. Materials sold to a contractor but never installed at the property generally do not support a lien.
Laborers and tradespeople who performed work directly on the property, including day laborers without written contracts.
Design professionals — architects, engineers, surveyors, draftsmen — who produced plans, drawings, structural designs, or site staking. Design work can support a lien even if construction never begins, provided the design was tied to a specific property improvement.
Parties who do not have lien rights:
Consultants whose role was advisory only
Brokers and salespeople involved in facilitating the project
Delivery companies whose role was purely logistical
Contractors who were never authorized to work on the property
Anyone whose contribution did not result in a physical improvement to the real estate
Authorization matters. Even a party who actually improved the property must show that the improvement was authorized — directly by the owner, or indirectly through the general contractor or another authorized agent. Homeowners occasionally receive notices from subcontractors hired by people who had no authority to bind the project; those liens are often vulnerable.
Where a Mechanic's Lien Must Be Filed
Under C.R.S. § 38-22-109, a lien must be recorded in the county where the property is located — and only in that county. There is no flexibility. A lien recorded in the wrong county is void.
This sounds obvious, but it trips contractors up regularly because Colorado property location does not always match mailing address. A home with a "Denver, CO" mailing address may actually sit in Arapahoe, Adams, or Jefferson County. Much of Highlands Ranch is Douglas County, not Denver. Rural parcels can straddle county lines.
The correct county is determined by the property's legal description — the metes-and-bounds or subdivision-lot-and-block description tied to the county's land records — not the street address. Sources that confirm the correct county:
The most recent recorded deed
The county assessor's parcel number
The county GIS map system
The Notice of Intent itself (which usually contains a legal description)
Recording is done at the County Clerk and Recorder's office, either in person, by mail, or through approved electronic recording vendors. Procedures vary:
Denver, Arapahoe, Douglas, Jefferson, Boulder, Larimer, and most metro counties accept electronic recording through approved vendors
Some rural counties still require in-person or mailed submissions
Every county enforces strict notarization rules; documents rejected for formatting errors are not considered recorded, and statutory deadlines keep running
The lien is recorded — and the deadline tolled — only at the moment the county actually records it, not when the document is mailed or submitted.
How a Mechanic's Lien Is Filed: The Process and Deadlines
Colorado law requires lien claimants to follow a specific sequence. Skipping any step can invalidate the lien.
Step 1: Notice of Intent to File a Lien Statement
Before a lien may be recorded, the claimant must serve a written Notice of Intent to File a Lien on both the property owner (or reputed owner) and the prime contractor at least ten days before recording the lien statement. This requirement is set out in C.R.S. § 38-22-109(3).
Service must be by personal delivery or by registered or certified mail, return receipt requested. An affidavit of service must accompany the lien statement when it is recorded. Day laborers on owner-occupied single-family residences are the limited exception — they are not required to serve the Notice of Intent.
For homeowners, the Notice of Intent is critical: it is the chance to resolve the dispute, gather payment records, or post a bond before the lien hits the public record.
Step 2: Record the Lien Statement in the Right County
After the ten-day notice period, the claimant records a written Lien Statement in the county where the property sits. The statement must include:
The name of the owner or reputed owner of the property
The claimant's name and address
A property description with legally sufficient detail
The exact amount claimed due, after all just credits and offsets
Step 3: Meet the Four-Month Filing Deadline
For most claimants, the lien statement must be recorded within four months after the last day labor was performed or materials were furnished to the project. Day laborers on single-family residences have a shorter window — two months. These deadlines come from C.R.S. § 38-22-109(5).
The "last day of work" is one of the most litigated points in Colorado lien practice. Courts look to the date of the last substantial improvement to the property — not punch-list items, warranty repairs, minor corrections, or cosmetic touch-ups designed to revive a stale lien deadline.
If the claimant needs more time, C.R.S. § 38-22-109(5) permits filing a Notice Extending Time to File a Lien Statement before the original deadline runs. That notice pushes the final filing deadline to the earlier of six months after the notice was mailed or four months after the last work — but only if the extending notice was itself filed on time.
Step 4: Enforce the Lien by Lawsuit Within Six Months
Recording the lien only preserves the claim. To collect, the claimant must file a foreclosure lawsuit and record a Notice of Lis Pendens within six months of project completion or the last day of work, as required by C.R.S. § 38-22-110 and § 38-22-113. Missing that deadline causes the lien to expire automatically — the claimant loses the right to foreclose.
If the lien is foreclosed and judgment is entered, interest runs at the contract rate or, if no rate is specified, at 12 percent per annum under C.R.S. § 38-22-101(5).
Homeowner Defenses to a Mechanic's Lien
Colorado law gives homeowners several powerful tools to defeat or dispose of an improper lien. Most disputes are resolved with one of these defenses long before any foreclosure ever occurs.
The Full Payment Defense
The single most important homeowner protection is the full payment defense under C.R.S. § 38-22-102(3.5), often referred to in older guidance as § 38-22-109(10).
The rule is straightforward: if the owner of an owner-occupied single-family dwelling has fully paid the general contractor for the contracted work — including all approved change orders — subcontractors and suppliers cannot enforce a mechanic's lien against the property. The homeowner who honors the contract is not the insurer of the general contractor's downstream payments.
To assert the defense, the homeowner must be able to prove full payment. Records that matter:
The signed contract and any signed change orders
Cancelled checks, wire confirmations, or ACH records
Bank statements showing the funds clearing
Sworn statements from the general contractor confirming receipt
Lien waivers obtained at each payment stage
When the defense applies, a written Notice of Defense citing § 38-22-102(3.5) is often enough to make the lien claimant withdraw. The statute also allows fee-shifting against a claimant who pursues the lien anyway.
Bonding Around the Lien
If the homeowner needs to sell, refinance, or simply clear title without waiting out the litigation, C.R.S. § 38-22-131 allows posting a substitution bond in district court. The bond is typically 150 percent of the lien amount plus court-allowed costs.
Once the bond is approved and recorded, the lien is discharged from the property. The claimant's recovery is then limited to the bond — the property itself is free. This procedure usually resolves in a matter of weeks and is the fastest way to clear title when a closing or refinance is pending.
Challenging the Lien for Procedural Defects
Liens routinely fail for technical reasons. Common defects that vacate a lien:
No Notice of Intent, or the Notice of Intent was served fewer than ten days before recording, or service did not comply with § 38-22-109(3)
Recorded in the wrong county — voids the lien entirely
Recorded outside the four-month window under § 38-22-109(5)
Defective property description — wrong parcel, wrong legal description, or property description so vague it does not identify the right real estate
Inflated or exaggerated amounts — particularly for disputed change orders, delay damages, or work not actually performed
Claimant lacked lien rights — for example, a consultant or unauthorized contractor
A homeowner who can prove any of these defects can file an action to vacate the lien and may recover attorney's fees against the claimant under the statute. Inflated liens also expose the filer to slander-of-title claims, which is a meaningful counter-pressure in negotiation.
The Contractor Trust Fund Statute
Separately, C.R.S. § 38-22-127 — Colorado's contractor trust fund statute — requires general contractors to treat payments received from the homeowner as trust funds and apply them to subcontractor and supplier obligations on the project. A contractor who diverts those funds to other uses may be personally liable to the homeowner and can face criminal prosecution. The trust fund statute is rarely the lead theory in a homeowner case, but it provides leverage when a general contractor has gone dark or filed bankruptcy with subcontractor liens hanging on the home.
What to Do If You Receive a Notice of Intent or a Recorded Lien
The sequence below is the practical playbook for homeowners.
1. Collect every document. The contract, every change order, every payment record, the Notice of Intent itself, and any communications with the contractor or subcontractor. Whether the lien survives or fails almost always turns on documents.
2. Identify the lien claimant. Are they a general contractor, subcontractor, supplier, design professional? Did they actually perform work or deliver materials to the property? Were they authorized? These questions determine whether the claimant even has lien rights to begin with.
3. Check the procedural points. Was the Notice of Intent served at least ten days before recording? Was the lien recorded in the right county within the four-month window? Does the property description identify the right property?
4. Calculate the prime contract status. Have you fully paid your general contractor for the contracted work, including change orders? If yes, the full payment defense may end the matter on its own.
5. Decide on the response. Depending on the facts, that may mean a written Notice of Defense citing § 38-22-102(3.5), a substitution bond under § 38-22-131, a petition to vacate the lien for procedural defects, or a negotiated payoff. Each route has trade-offs in time, cost, and risk.
6. Track the six-month enforcement deadline. If the claimant does not file a foreclosure lawsuit and record a Notice of Lis Pendens within six months of last work, the lien expires automatically. Some lien disputes resolve themselves simply by waiting out the deadline — but a homeowner who relies on that strategy needs to be confident about which date is the operative "last work" date.
How to Prevent Liens Before Construction Starts
For homeowners planning new construction, additions, or significant remodels, the right contract terms prevent most lien problems before they arise.
Require a detailed written contract identifying scope, schedule, payment milestones, and change-order procedure
Require conditional lien waivers from the general contractor and every subcontractor at each progress payment
Require a final unconditional waiver at the final payment, signed by the general contractor and major subcontractors
Require proof of insurance and licensing from every party performing work
Joint-check arrangements for major material suppliers — paying the supplier and the contractor jointly — eliminates the risk of supplier liens
Track project completion carefully so you know when the four- and six-month deadlines run
These steps are not foolproof, but they substantially reduce the chance that a surprise lien shows up after closing.
When to Get a Lawyer Involved
Most homeowner-side lien work is time-sensitive. Once a Notice of Intent arrives, the ten-day window closes quickly, and the four-month and six-month deadlines run in parallel. A short consultation early in the process is generally far cheaper than waiting until the lien is recorded and a closing is two weeks away.
A Colorado construction lawyer can:
Evaluate whether the claimant actually has lien rights
Identify procedural defects that may vacate the lien
Audit payment records and the full payment defense
Coordinate a substitution bond when title needs to be cleared fast
Pursue slander-of-title and fee-shifting claims against inflated or improper liens
If construction defects accompany the lien — for example, if the contractor stopped work because of a payment dispute over defective work — the case may also involve Colorado construction defect law, which has its own deadlines and procedures.
Frequently Asked Questions
Can I challenge a mechanics lien filed against my Colorado home?
Yes. Colorado homeowners have several defenses to a mechanics lien, including the full-payment defense (you fully paid the general contractor), procedural defects in the lien, bonding around the lien, and certain trust-fund-statute arguments.
What is the full payment defense to a mechanics lien in Colorado?
Under Colorado's full payment defense (C.R.S. 38-22-102), a homeowner who paid the general contractor in full before notice of a subcontractor's lien may be protected from that lien, provided the statutory conditions are met.
What should I do immediately after receiving a Notice of Intent to file a mechanics lien?
Don't ignore it. Verify what work or materials are claimed, check your payment records, request the supporting documentation, and consult a Colorado construction attorney before the 10-day window closes. Early action preserves the most defenses.
Talk to a Colorado Construction Lawyer
If a lien has been filed against your Colorado home — or you have received a Notice of Intent and are not sure what to do — Hollington Law Firm represents Colorado homeowners in mechanic's lien disputes statewide. We routinely evaluate lien rights, full-payment defenses, procedural defects, and bonding strategies, and we can usually tell you within a short conversation whether the lien is enforceable and what your fastest path to clear title looks like. Learn more about our mechanic's lien defense practice.
Schedule a free consultation to discuss your situation.
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This article is for general information only. It is not legal advice, and reading it does not create an attorney-client relationship. Every lien dispute turns on its specific facts, contract terms, and timing. Speak with counsel about your situation before taking action.
Last reviewed by W. Neal Hollington on May 13, 2026.
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