Lien waivers explained: conditional, unconditional, final

A mechanics lien is the right a contractor, sub or supplier has to put a claim against a property when they have not been paid for work or materials on it. It is one of the strongest collection tools in construction, because it attaches to the property itself — the owner cannot sell or refinance cleanly while it stands.

A lien waiver is a document in which you give up some or all of that right, usually in exchange for a payment. Owners, lenders and general contractors ask for them so they know the people who worked on the job have been paid and will not come after the property later.

They are routine paperwork. They are also one of the easiest ways in construction to give away money you have not received, because the wrong form signed at the wrong moment does exactly that.

The four types

Waivers come in two pairs. One pair is about when the waiver takes effect; the other is about how much it covers.

Conditional waivers only take effect once the payment they describe has actually been received. If the payment never arrives, or the check bounces, you have waived nothing.

Unconditional waivers take effect the moment you sign, whether or not you have been paid.

Progress (or partial) waivers cover the work up to a specific date or for a specific payment. Your rights for later work are untouched.

Final waivers cover everything on the job. Once effective, you have no lien rights left on that project at all.

Put together, that gives four forms: conditional progress, unconditional progress, conditional final and unconditional final.

The one rule that matters most

Never sign an unconditional waiver until the money is actually in your account — cleared, not just deposited, and certainly not just promised.

Sign a conditional waiver with your pay application or invoice. Sign the unconditional one once the funds have cleared. If someone insists on an unconditional waiver before paying, that is a request to give up your strongest protection in exchange for a promise, and it is worth a conversation with your attorney before you agree.

Read the through date and the amount

A progress waiver typically waives your rights for all work through a certain date, in exchange for a certain amount. Read both.

The trap is the gap between them. If the waiver covers everything through the end of March, but the payment only covers your base contract billing — and you also have an unpaid change order and extra work from March — then signing it may waive your lien rights for those too. Most waiver forms have space for exceptions: list any disputed claims, unapproved change orders and unbilled extras there, with amounts, so they are expressly kept alive.

State rules vary a great deal

Lien law is state law, and it differs more than almost anything else in construction.

Several states — California and Texas among them — require specific statutory waiver forms, and a waiver that does not follow the statutory wording may not be enforceable in the way either side expects. Many states require preliminary notices to be sent early in the job to preserve lien rights at all; miss that notice and you may have nothing to waive. Deadlines for recording a lien differ by state and by your position in the chain.

None of this can be summarised safely in one guide. If lien rights matter to your cash flow — and on commercial work, they usually do — it is worth an hour with a construction attorney in your state to learn the rules that apply to you.

When you are the one collecting them

If you pay subs and suppliers — as a general contractor, or a trade contractor with subs of your own — the waivers flow the other way. Before paying:

• Collect a conditional waiver for the amount you are about to pay.
• After the payment clears, collect the unconditional one.
• Include suppliers, not just subs. A supplier who is not paid by your sub can often lien the property even though you paid the sub in full.
• On larger jobs, ask for lower-tier waivers — your sub's own subs and suppliers — or use joint checks payable to both the sub and their supplier.

Owners and lenders commonly require a full set of waivers with every draw. One missing waiver can hold up the whole payment, which makes waiver tracking a cash flow issue, not just an administrative one.

The bookkeeping side

Waivers are documents, but they need to be tied to the books, because they only mean anything in relation to specific payments. For each job, keep a simple log:

• the payee or payer
• the type of waiver
• the amount
• the through date
• any exceptions listed
• the date signed or received
• the payment it relates to, and the date that payment cleared

With that log, three questions become easy to answer: which payments are still waiting on a waiver, which unconditional waivers were signed before the money cleared, and whether retainage on a finished job is being held up by paperwork on your side. That last one is more common than it sounds — see retainage explained.

Related

• Bookkeeping for general contractors
• When a customer will not pay
• Change orders and getting paid

General information, not legal advice. Lien and waiver law differs substantially between states — confirm the rules and forms that apply to your work with a construction attorney.