How liquidated damages work in US construction contracts
Liquidated damages (LDs) are a fixed amount, usually per calendar day, that a contractor pays the owner for finishing late, in place of proving the owner's actual delay losses. In AIA contracts the rate sits in the owner-contractor agreement (A101-2017 Section 4.5), not in A201. Courts enforce LDs that reasonably forecast actual harm and strike penalties.
This guide is general information, not legal advice. Statutes and cases are cited as checked on 2026-10-21; have counsel confirm how they apply to your contract and state.
What is a liquidated damages clause?
An LD clause fixes the price of delay before the job starts. If the contractor misses the date, usually substantial completion, it owes the stated amount for each day late. The owner does not have to prove lost rent, financing cost or extended staff time, and the contractor knows its maximum delay exposure when it bids, provided there is a cap.
Where are liquidated damages in an AIA contract?
Not in A201. The general conditions handle time extensions; the agreement holds the rate. That split is why LDs get missed: the rate is in one document and the edits that make it dangerous are usually in the supplementary conditions.
| Document | Section | What it does |
|---|---|---|
| AIA A101-2017 (agreement) | 3.3.3 and 4.5 | 3.3.3 says LDs for missing substantial completion, if any, are assessed as set out in 4.5. Section 4.5 is a blank the parties fill in. |
| AIA A201-2017 | 8.3 | Delays and extensions of time. Not an LD clause: 8.3.1 lists the causes (owner acts, changes, weather, other causes beyond the contractor's control) that extend the Contract Time, which keeps LDs from running for excusable delay. |
| AIA A201-2017 | 15.1.7 | Mutual waiver of consequential damages. It states that nothing in it precludes LDs. |
| ConsensusDocs 200 | 6.5 and 6.6 | 6.5 is an optional LD provision tied to substantial completion. The 6.6 consequential damages waiver carves out LDs agreed under 6.5. |
| Federal work | FAR 52.211-12 | The contracting officer inserts an amount per calendar day of delay until the work is completed or accepted. Under FAR 11.503, separate stages can carry separate rates, paired with 52.211-13 Time Extensions. |
Are liquidated damages enforceable in Texas?
Yes, if they pass the Texas test. Under Phillips v. Phillips, 820 S.W.2d 785 (Tex. 1991), the harm from the breach must be hard to estimate and the amount must be a reasonable forecast of just compensation, judged when the contract was signed. In Atrium Medical Center v. Houston Red C (Tex. 2020) the court added a look at the time of breach: an unbridgeable gap between actual and liquidated damages can make the clause an unenforceable penalty. Most states apply a similar reasonable-forecast test.
How do you calculate LD exposure?
Multiply the daily rate by the realistic days at risk, add any milestone LDs that run in parallel, then compare with the cap. The example below uses invented numbers to show the math.
| Scenario | Rate per day | Days late | Exposure, no cap | With a 5% cap on a $20M contract |
|---|---|---|---|---|
| Substantial completion only | $5,000 | 30 | $150,000 | $150,000 |
| Substantial completion only | $5,000 | 120 | $600,000 | $600,000 |
| Plus an interim milestone at $2,500 per day | $7,500 combined | 180 | $1,350,000 | $1,000,000 |
Which LD terms should you flag before you sign?
- No cap. A daily rate with no aggregate limit.
- Stacked milestones. Interim milestone LDs in the supplementary conditions that run alongside the substantial completion rate.
- Narrowed time extensions. Edits that strip causes out of A201 8.3.1, such as weather or owner-caused delay.
- Soft trigger. Substantial completion tied to a certificate with no objective test.
- Not the sole remedy. Nothing says LDs are the owner's only remedy for delay, or the 15.1.7 consequential damages waiver is deleted.
- Flow-down to subs. The full owner rate passed to every subcontractor regardless of who caused the delay.
What is a reasonable position to negotiate?
- Cap aggregate LDs at a percentage of the contract sum. The percentage is a commercial call for your team.
- Sole remedy: LDs are the owner's exclusive remedy for delay, and the mutual consequential damages waiver stays.
- Excusable delay: keep A201 8.3.1 whole and follow the Article 15 notice rules, because a missed notice can cost the extension.
- Objective trigger: certificate of occupancy or owner beneficial use.
Dora, BAU AI's contract review agent, pulls the LD rate from the agreement and the cap, milestone and time-extension edits from the supplementary conditions, and cites each to its page. Your team and counsel decide what to push back on.
Frequently asked questions
What triggers liquidated damages?
In most US contracts, missing the substantial completion date, as adjusted by change orders and time extensions. Some contracts add interim milestones or a separate final completion rate, which is why the supplementary conditions need a full read.
Can an owner collect liquidated damages and actual delay damages?
Only if the contract allows it. Courts generally treat agreed LDs as the measure of delay damages, but the clause should say so expressly. AIA A201-2017 15.1.7 waives the owner's consequential damages while preserving LDs.
Do liquidated damages stop when the owner causes the delay?
Under AIA A201-2017 8.3.1, owner acts and ordered changes extend the Contract Time, so LDs should not run for those days. The contractor still has to make a timely claim under Article 15, so track notice dates.
How do liquidated damages work on federal projects?
FAR 52.211-12 sets a contracting-officer-inserted amount per calendar day of delay until the work is completed or accepted. If the government terminates the contractor's right to proceed, LDs keep accruing until the work is completed.
Do subcontractors pay liquidated damages?
Only if the subcontract passes them down. AIA A201-2017 5.3 has the contractor bind subs to the contract documents for their work, so negotiate an allocation tied to the delay the sub actually caused, with a cap.