Michigan Full Unconditional Waiver: Statutory Form and Timing Rules

A Michigan full unconditional waiver is a signed document in which a contractor, subcontractor, or supplier confirms that their contract has been paid in full and permanently releases all construction lien rights against the property. It takes effect the moment it is signed and delivered, and MCL 570.1115 controls its form, timing, and enforceability.¹

What Signing One Actually Does

Two things happen when a lien claimant signs a full unconditional waiver. The claimant declares the contract fully paid and satisfied, and the claimant releases every construction lien right that could have attached to the property for that work. There is no condition attached and no reversal if something later goes wrong with the payment.

Under MCL 570.1115(2), a contractor or supplier who receives full payment on their contract is required to provide the property owner or the owner’s designee with a full unconditional waiver.¹ It is an obligation that follows final payment, not a favor. For the owner, the signed waiver is proof that no further lien claim from that party can attach to the title. For lenders and title companies working a sale or refinance, it clears the parcel.

How It Differs From the Other Three Waivers

Michigan recognizes four waiver types, and the full unconditional sits at one end of a risk spectrum defined by timing.

A partial conditional waiver covers a specific progress payment and only becomes effective when that payment is actually made.
A partial unconditional waiver covers the same specific amount but is effective immediately on delivery.
A full conditional waiver covers the entire contract but takes effect only when payment is actually made.¹
A full unconditional waiver covers the entire contract and takes effect immediately on delivery.

Conditional waivers protect the signer, because the release never activates unless funds actually arrive. Unconditional waivers put the risk on the signer. If you hand over a full unconditional waiver and the payment fails, you have already given up your lien rights. That is why this particular waiver belongs at the end of a job, after money has cleared, not alongside the check that is supposed to pay you.

The Statutory Form and What It Must Contain

Michigan does not let parties invent their own waiver language. MCL 570.1115(9) states that all four waiver types “shall be used in substantially the following format,” and it prints the exact language for each.¹ For the full unconditional version, the form has to carry:

Identification of the contracting party
A description of the improvement provided
A description of the property
A declaration that the contract “has been fully paid and satisfied”
A statement that “all my/our construction lien rights against the described property are waived and released”
The lien claimant’s signature, date, address, and telephone number
The warning at the bottom: “DO NOT SIGN BLANK OR INCOMPLETE FORMS. RETAIN A COPY.”

The word “substantially” allows some layout flexibility, but the core declarations and the identification fields have to be present. A form missing these elements can be attacked as noncompliant. The property and improvement descriptions matter more than they look. A vague description of the work, or a property description that does not match the actual parcel, leaves room to argue about what the waiver actually covered.

The waiver has to be in writing and signed by the lien claimant or an authorized agent. Oral promises to waive lien rights carry no weight under the Construction Lien Act.¹ Notarization is not required. The statutory form calls for a signature, date, address, and phone number, and nothing further.

When It Is Safe to Sign

The rule is simple to state and easy to forget under project pressure: do not sign a full unconditional waiver until every dollar under the contract has been received and cleared. Because the waiver is effective on delivery, handing it over before funds are confirmed surrenders lien rights with nothing guaranteed in return. That is the reason the statutory form carries its own warning against signing blank or incomplete versions.

Retainage complicates this. MCL 570.1115(5) says that retainage which is not payable until a certain event occurs, such as substantial completion, is not considered “due” until that event happens.¹ If a general contractor asks for a full unconditional waiver while retainage is still being held back, the contract has not, in truth, been fully paid. Signing anyway releases lien rights over money still owed. The safer sequence is partial unconditional waivers for progress payments and the full unconditional waiver only after retainage and any closeout balances have hit your account.

Accepting a promissory note or other evidence of debt from the owner or contractor does not by itself waive or discharge lien rights.¹ A promise to pay is not the same as payment, and the statute keeps that line clean.

Advance Waivers Are Void

MCL 570.1115(1) makes Michigan’s position on advance waivers explicit. No one can require that construction lien rights be waived in advance of work being performed. Any waiver signed as part of a contract before work is done is contrary to public policy and invalid, except to the extent that payment for labor and materials was actually made to the person who signed it.¹

Lien rights are the primary leverage a contractor or supplier has to secure payment. Letting those rights be signed away at contract execution would undo the Construction Lien Act’s purpose. If a general contractor or owner hands over a blanket waiver at signing and asks for a signature, that document is unenforceable for work not yet paid for.

Residential Projects: The Verification Rule

Homeowners get an added layer of protection. Under MCL 570.1115(7), an owner or lessee cannot rely on a waiver provided by someone other than the lien claimant named in it, if that claimant filed a notice of furnishing or was excused from doing so, unless the owner first verifies the waiver’s authenticity directly with the lien claimant. Verification can happen in writing, by phone, or in person.¹

The statutory form itself carries this warning, telling residential owners they “may not rely upon it without contacting me/one of us…to verify that it is authentic.” The rule stops a general contractor from delivering a stack of subcontractor waivers that the subcontractors never actually signed. For a homeowner running a renovation, that means calling each named subcontractor before treating the property as clear of that party’s potential lien.

If a Lien Has Already Been Recorded

When a waiver was not obtained in time and a lien is already on the record, MCL 570.1116 provides a separate route. A property owner can vacate and discharge a recorded lien by filing a surety bond with the county clerk. The bond is set at twice the claimed lien amount, with the lien claimant named as obligee.¹ The bond does not resolve the underlying payment dispute. It moves the fight off the property so the title can be sold or refinanced while the parties litigate.

Common Mistakes to Avoid

Signing Before Payment Clears

The most damaging mistake is signing a full unconditional waiver at the same moment a check changes hands. If the check bounces, the waiver still stands. Use a full conditional waiver when payment has not yet cleared, or hold the unconditional version until the funds are confirmed in your account.

Using a Non-Statutory Form

Some contractors and project management platforms use proprietary waiver forms that reach beyond lien rights to release breach-of-contract claims, warranty claims, or other rights that have nothing to do with the Construction Lien Act. If the form in front of you does not look substantially like the template in MCL 570.1115(9), read every word before signing.¹ Broader releases packaged as “waivers” can strip rights you did not intend to surrender.

Treating Retainage as Already Paid

A waiver stating the contract is “fully paid and satisfied” while retainage is still outstanding misrepresents the deal and releases lien rights over the remaining balance. Track retainage as its own line and do not sign the full unconditional version until that holdback has been paid.

Skipping Residential Verification

Homeowners who accept a stack of subcontractor waivers from a general contractor without independently verifying them lose the statutory protection. Even if the waivers turn out to be genuine, the owner cannot rely on them without the verification step.¹

Not Keeping a Copy

The statutory form tells signers to retain a copy, and this is the step that gets skipped most often. If a dispute surfaces months later about whether a waiver was signed, or what amount it covered, the party without a copy is at a real disadvantage. Keep signed originals or clean copies with the project file for the duration of any warranty period and the contract statute of limitations.

1
Michigan Legislature. MCL – Section 570.1115