Summary. Construction disputes are rarely about whether work was done. They are about whether a change was authorized, whether a delay was excusable, and whether notice was given in time. This article covers delivery methods and pricing structures and how each allocates risk, then the payment chain — schedule of values, payment applications, retainage, and pay-if-paid clauses. It works through changes and constructive change, differing site conditions, and delay claims including critical path analysis, concurrent delay, and no-damages-for-delay clauses, then Spearin, completion and warranty, mechanics liens and their deadlines, payment bonds and the Miller Act, and dispute resolution.

A general contractor building a 40,000 square foot medical office finishes eleven weeks late. The owner withholds $310,000 in liquidated damages at $4,000 per day.

The contractor's position is that the delay was not its fault. The owner's architect took five weeks to respond to a submittal that the contract required be returned in fourteen days. The owner directed three separate scope additions verbally. And the county changed a fire suppression requirement mid-project.

Every one of those may be a valid excuse. None of them will help.

The contract required written notice of any claim for additional time within twenty-one days of the event giving rise to it, with a detailed statement of the schedule impact. The contractor sent no notices. It raised the issues in weekly meetings, mentioned them in emails about other subjects, and assumed everyone understood.

The claim is waived — not because it lacks merit, but because a paperwork obligation the contractor knew about was never performed.

Construction law rewards contemporaneous documentation more than any other commercial field. The parties who lose are almost never the ones who were wrong on the facts.

The short answer

The contract controls, and the standard forms are heavily negotiated. The AIA A201 General Conditions, the ConsensusDocs series, and EJCDC documents each allocate risk differently, and owner-drafted forms typically shift more risk to the contractor than any of them.

Four risk allocations decide most disputes:

  1. Who bears the cost of a change — and what counts as a change.
  2. Who bears the cost of delay — and whether damages are recoverable at all.
  3. Who bears the risk of defective plans — the Spearin question.
  4. Who bears the risk of non-payment up the chain — pay-if-paid versus pay-when-paid.

The two deadlines that end claims:

  • The contractual notice period for claims, commonly 7 to 21 days from the event.
  • The statutory lien deadline, which in many states runs from last furnishing and cannot be extended by anyone.

Project delivery and pricing

Design-bid-build. The owner contracts separately with a designer and a contractor. The contractor builds to the owner's plans and, under Spearin, is generally not responsible for their adequacy. Lowest first cost, most change orders, and the most finger-pointing between designer and builder.

Design-build. A single entity designs and builds. Single point of responsibility, fewer owner-side change orders, and the Spearin protection largely disappears because the builder owns the design. The owner's leverage moves to the front end, into the criteria documents.

Construction manager at risk. The CM joins during design as an adviser, then converts to a guaranteed maximum price and holds the trade contracts. Preconstruction input reduces surprises; the negotiation is about what is in the contingency, who owns savings, and what qualifications the GMP carries.

Multi-prime. The owner holds separate trade contracts and coordinates. Lowest markup, highest owner risk, and coordination delay claims flow directly to the owner.

Pricing structures:

  • Lump sum / stipulated sum — contractor bears cost risk within the defined scope.
  • Cost plus fee — owner bears cost risk; requires audit rights and clear definitions of cost.
  • Cost plus with GMP — hybrid; the fight is always about what the GMP includes, the contingency and who controls it, and savings sharing.
  • Unit price — for quantities not fixed at bid, with an adjustment mechanism when actual quantities vary materially.

Read the GMP qualifications and assumptions. A GMP with fifteen pages of qualifications ("assumes rock excavation not exceeding X," "assumes permits issued by Y date") is a lump sum with a list of exceptions, each of which is a pre-approved change order.

The payment chain

The schedule of values allocates the contract sum across activities and drives every progress payment. Front-loading — assigning disproportionate value to early activities — is common, contested, and worth catching before the first application.

Payment applications are submitted monthly, certified by the contractor, reviewed by the architect or owner's representative, and paid within the contractual period. Standard requirements: updated schedule of values, stored materials documentation, conditional lien waivers from the contractor and subcontractors for the current period, unconditional waivers for the prior period, certified payroll on public work, and an updated schedule.

Retainage. The owner withholds a percentage (commonly 5 to 10 percent) until substantial completion or later. Points to negotiate: the percentage, reduction at 50 percent completion, whether retainage is released separately for early-finishing trades, and whether it may be placed in an escrow or replaced by a retainage bond. Many states cap retainage by statute on public work and, increasingly, on private work.

Pay-if-paid versus pay-when-paid. This single distinction decides who absorbs an owner's insolvency.

  • A pay-when-paid clause is generally read as a timing provision: the general contractor must pay the subcontractor within a reasonable time even if the owner never pays.
  • A pay-if-paid clause is a condition precedent: no owner payment, no subcontractor payment. Courts require clear and unambiguous language expressly making owner payment a condition precedent and shifting the risk of owner nonpayment.
  • Several states void pay-if-paid clauses as against public policy or limit their effect, and several hold that such a clause cannot defeat a mechanics lien or payment bond claim regardless of its effect on the contract claim.

Prompt payment statutes. Nearly every state has one for public work and most now for private work, setting deadlines for owner payment to the contractor and contractor payment to subcontractors, with interest and sometimes attorney's fees for violations, and a defined right to suspend performance after notice. These statutes frequently override contrary contract terms.

Changes and the change order process

The changes clause gives the owner the unilateral right to direct changes within the general scope of the work, with an equitable adjustment to price and time. That right is what makes construction contracts workable; the disputes are about the adjustment.

The mechanics:

  • Change order — a written instrument signed by owner, contractor, and (in AIA form) architect, agreeing on scope, price, and time.
  • Construction change directive — the owner directs the change before agreement on price, with the adjustment determined later by a defined method. Under A201, the contractor must proceed.
  • Minor changes in the work — the architect may order changes not affecting price or time.

Pricing methods, in order of frequency: a lump sum quotation; unit prices; cost of the work plus a fee with a defined percentage; and, where the parties cannot agree, a determination by the architect subject to dispute resolution.

Constructive changes. The most litigated concept in the field. A constructive change occurs when the owner or its agent, without issuing a formal change order, does something that has the effect of changing the work:

  • Interpreting an ambiguous specification more strictly than the contractor reasonably read it.
  • Rejecting work that conforms to the specifications.
  • Directing a method or sequence not required by the contract.
  • Failing to disclose superior knowledge material to performance.
  • Interfering with or disrupting the contractor's chosen means and methods.
  • Accelerating the work by refusing a justified time extension — constructive acceleration.

A constructive change entitles the contractor to an equitable adjustment if it gives timely notice. Which brings us to the provision that decides these cases.

Notice. Standard forms require written notice within a short window — A201 uses 21 days from the event or from recognition of the condition — and provide that failure to give notice waives the claim. Courts enforce these provisions, with some softening where the owner had actual knowledge and suffered no prejudice, and with a minority requiring strict compliance regardless.

The practical rule. Send a notice for every event that might later support a claim, even when relations are good, even when the amount is unknown, and even when the project manager says it is unnecessary. A notice costs nothing. Its absence costs the claim.

Waiver by conduct. A contractor that repeatedly performs changes without written orders may establish a course of dealing waiving the writing requirement — a fact-intensive argument that sometimes works and is never a plan.

Differing site conditions

A differing site conditions clause shifts the risk of unforeseen subsurface or concealed conditions to the owner, in exchange for contractors not padding bids with contingency for the unknown.

Two categories:

  • Type I — conditions differing materially from those indicated in the contract documents.
  • Type II — unknown physical conditions of an unusual nature differing materially from those ordinarily encountered in work of the character provided for.

Elements a contractor must prove: the contract indicated the conditions (Type I); the actual conditions differed materially; the conditions were reasonably unforeseeable based on the information available at bid; the contractor reasonably relied on the indications; and it suffered damages. Prompt written notice before disturbing the condition is nearly always required, so the owner can inspect.

Where the contract omits the clause — common in private owner-drafted forms — the contractor generally bears the risk, subject to misrepresentation and superior knowledge theories.

Site investigation clauses requiring the contractor to have inspected the site cut the other way, and the interaction between an exculpatory site-investigation clause and a differing site conditions clause is a recurring fight. A reasonable pre-bid site visit does not obligate a contractor to conduct subsurface exploration.

Delay claims

The three delay categories:

  • Excusable and compensable — caused by the owner or those for whom it is responsible. Contractor gets time and money.
  • Excusable but non-compensable — caused by neither party (unusually severe weather, certain force majeure events). Contractor gets time only.
  • Non-excusable — caused by the contractor. Contractor gets nothing and may owe liquidated damages.

The critical path. Only delays to activities on the critical path extend the project. A delay to an activity with float does not, unless it consumes so much float that the activity becomes critical. This is why schedule analysis dominates delay litigation, and why a contractor without a baseline schedule and monthly updates cannot prove its claim.

Methods of analysis, roughly in order of persuasiveness: contemporaneous period analysis (windows), time impact analysis, as-planned versus as-built, and collapsed as-built. Courts and boards increasingly reject total cost and modified total cost claims except where the contractor proves the impracticability of itemizing, its bid was reasonable, its actual costs were reasonable, and it was not responsible for the added costs.

Concurrent delay — when owner-caused and contractor-caused delays overlap. The traditional rule: neither party recovers damages, but the contractor receives a time extension, defeating liquidated damages. Modern approaches apportion where the evidence permits. Many contracts now define concurrency and its consequences expressly, which is the better practice for both sides.

No-damages-for-delay clauses bar monetary recovery for delay, allowing only time extensions. They are enforceable in most states, subject to exceptions courts have carved out for delays: caused by bad faith or active interference; not contemplated by the parties; of unreasonable duration amounting to abandonment; or resulting from the owner's breach of a fundamental obligation. Several states restrict such clauses by statute, particularly on public work.

Liquidated damages must be a reasonable pre-estimate of anticipated loss and are unenforceable as a penalty if disproportionate. Contractors should confirm the daily rate has some relationship to the owner's actual exposure, and should insist on a mutual remedy or a cap. An owner that also seeks actual delay damages on top of liquidated damages usually cannot have both.

Acceleration damages — overtime, additional crews, shift work, and lost productivity — are recoverable where the owner directs acceleration, or constructively accelerates by denying a justified extension. Lost productivity is proved by measured mile analysis comparing productivity in unimpacted and impacted periods, which is more persuasive than industry productivity factor studies.

Spearin and the allocation of design risk

United States v. Spearin, 248 U.S. 132 (1918), holds that when an owner provides plans and specifications, it impliedly warrants their adequacy, and a contractor that builds in accordance with them is not responsible for the resulting defects.

Three points define its scope:

  • It applies to design specifications — those that dictate how the work is to be performed — and not to performance specifications, which state the result and leave the means to the contractor. Many specifications are hybrids, and the classification is where the fight occurs.
  • It is displaced in design-build, where the contractor furnishes the design. The residual protection concerns the owner's criteria documents and any prescriptive elements the owner supplied.
  • It can be limited by express disclaimers and by clauses requiring the contractor to review documents and report errors, though courts read broad disclaimers narrowly and will not enforce a disclaimer that effectively transfers design responsibility without the contractor having design authority.

The contractor's duty to report. Most forms require the contractor to review the documents and promptly report errors, inconsistencies, or omissions discovered. That duty does not convert the contractor into a designer, but a contractor that spots a defect and builds it anyway will not be heard to complain.

Completion, warranty, and defect claims

Substantial completion is the milestone that matters. It is the point at which the work is sufficiently complete for the owner to occupy or use the project for its intended purpose. It typically triggers: the end of liquidated damages accrual, the transfer of risk of loss and insurance obligations, the release of most retainage, the start of the warranty period, and the beginning of statutory limitations and repose periods.

Punch list. A list of incomplete or defective items prepared at substantial completion. Practical drafting point: define the value that may be withheld for punch list work — a common formulation is 150 to 200 percent of the estimated cost of the remaining items, rather than the entire remaining balance.

Final completion and final payment. Final payment typically requires: completion of punch list, final lien waivers from everyone, consent of surety, warranties and operation and maintenance manuals, as-built drawings, and certificates of occupancy. Acceptance of final payment usually waives the contractor's claims other than those specifically reserved in writing — so reserve them.

Warranties. Three layers:

  • Express contractual warranty, commonly one year against defects in materials and workmanship. This is a correction period, not a limitation on the owner's other remedies.
  • Manufacturer and subcontractor warranties, assigned to the owner.
  • Implied warranties, which vary by state and may include workmanlike construction and, for residential work, habitability. Some states permit waiver with conspicuous language; others do not.

Statutes of limitation and repose. The limitations period for a construction defect claim typically runs from discovery or from substantial completion, depending on the state. Overlaying it is a statute of repose — an absolute outer limit, commonly six to fifteen years from substantial completion, after which no claim may be brought regardless of discovery. Repose periods are jurisdictional in effect and cannot be tolled by concealment in some states.

The economic loss rule bars tort claims for purely economic damages where the parties are in contractual privity, which is why owners suing designers and remote contractors plead carefully around it.

Mechanics liens

A mechanics lien is a statutory security interest in the improved real property, available to those who furnish labor or materials. It is the most powerful collection tool in construction and the least forgiving.

Universal features, with state-specific details:

  • Who may claim. Contractors, subcontractors, sub-subcontractors (often limited by tier), material suppliers, equipment lessors, and design professionals in many states.
  • Preliminary notice. Many states require a notice to owner or preliminary notice within a short period after first furnishing — commonly 20 to 45 days — as a precondition to lien rights. Missing it forfeits the lien even if everything else is perfect. California's 20-day preliminary notice and Texas's monthly notice regime are the most frequently missed.
  • Deadline to record. Typically 60 to 120 days after last furnishing by the claimant or after completion of the project, depending on the state.
  • Deadline to foreclose. Typically 6 months to 2 years after recording. Miss it and the lien expires.
  • Content. Statutes prescribe the form with unusual specificity — the amount, the property description, the owner's name, the claimant's role, and dates of first and last furnishing. Errors can be fatal.
  • Priority. Varies dramatically. Some states relate the lien back to the commencement of work on the project, which can prime a construction lender's mortgage recorded later; others relate to first furnishing by the claimant, or to recording.
  • Amounts. Some states limit subcontractor liens to amounts unpaid to the general contractor (a derivative or "New York rule" system); others allow a full price lien regardless (a "Pennsylvania rule" system).
  • Bonding off. The owner or contractor may substitute a lien release bond, transferring the claim from the property to the bond.
  • Residential protections. Many states add notice, contract-form, and disclosure requirements for residential work, with penalties including loss of lien and, in some, of the contract claim.

Lien waivers. Exchanged with every payment application. Four types: conditional and unconditional, each for progress and final payment. Rules that matter: several states prescribe statutory waiver forms and void non-conforming ones; prospective waivers of lien rights before work is performed are void in many states; and an unconditional waiver delivered before the check clears is a genuine risk that the drafters of the statutory forms intended to address.

Practical discipline. Calendar preliminary notice deadlines at contract signing, not at first invoice. Track last furnishing date by claimant. Do not let warranty or punch list work be treated as extending the lien period — most states hold it does not.

Payment bonds and the Miller Act

Because federal property cannot be liened, the Miller Act, 40 U.S.C. §§ 3131-3134, requires a payment bond on federal construction contracts above a threshold, protecting those who furnish labor and materials.

Key rules:

  • Claimants are first-tier subcontractors and suppliers, and second-tier claimants (those with a contract with a first-tier subcontractor). A supplier to a supplier is not protected.
  • Second-tier claimants must give written notice to the prime contractor within 90 days of last furnishing.
  • Suit must be filed after 90 days and within one year of last furnishing, in the district where the contract was performed.
  • Rights may not be waived in advance; a waiver is effective only if in writing, signed, and executed after the claimant has furnished labor or material.

"Little Miller Acts" apply to state and local public work, with their own thresholds, notice periods, and limitations — none of which match the federal timetable.

Private payment bonds are creatures of contract; read the bond, because notice and suit deadlines are set by its terms and by the applicable statute.

Performance bonds protect the owner against contractor default. On default, the surety's options typically include financing the contractor, taking over and completing, tendering a replacement contractor, or paying. Owners should follow the bond's declaration-of-default procedures precisely, because sureties defend on notice grounds routinely.

Dispute resolution

Most standard forms include a stepped process: initial decision by the architect or a designated initial decision maker, then mediation as a condition precedent, then arbitration or litigation as selected.

Points to negotiate:

  • Whether the architect — retained by the owner — should be the initial decision maker. Many contractors insist on a neutral.
  • Arbitration versus litigation, and if arbitration, the rules, the number of arbitrators, and whether the award must be reasoned.
  • Joinder and consolidation, which is critical: a dispute involving owner, contractor, subcontractor, and designer resolved in separate proceedings under inconsistent clauses produces inconsistent results. Align the dispute clauses across the prime contract, subcontracts, and design agreement.
  • Continuing performance during a dispute, and whether payment continues for undisputed amounts.
  • Waiver of consequential damages, which is mutual in the standard forms and is one of the most valuable provisions in them.

A worked example

Ridgemont Builders contracts to build a $9.2 million distribution facility. Lump sum, AIA A201 general conditions, 21-day notice requirement, liquidated damages of $3,500 per day.

Month 2. Excavation encounters undocumented buried concrete foundations not shown on the geotechnical report. Ridgemont stops work in the area, notifies the owner in writing within four days with photographs, and requests direction before disturbing further. This is a Type I differing site condition. Change order: $214,000 and 9 days.

Month 5. The architect takes 34 days to return a structural steel submittal the contract required in 14. Ridgemont sends a written notice on day 15 identifying the delay, the affected activity, its critical path status, and a reservation of rights on time and cost. It updates the notice monthly.

Month 7. The owner asks Ridgemont to add a mezzanine. No change order is issued; the project executive says "we'll paper it later." Ridgemont sends a confirming letter stating it will proceed on the owner's direction as a construction change directive, with cost and time to be determined. It tracks the work with separate cost codes.

Month 9. The owner denies a requested 20-day extension and directs Ridgemont to meet the original date. Ridgemont responds in writing that it disagrees, will accelerate under protest, and reserves an acceleration claim. It documents overtime hours, additional crews, and productivity by comparing the accelerated period to a measured mile from months 3 to 5.

Month 13. Substantial completion, 16 days late.

The result. The owner asserts 16 days of liquidated damages ($56,000). Ridgemont's schedule analyst performs a windows analysis showing 9 days attributable to the differing site condition (already granted), 12 days to the submittal delay, and 4 days concurrent with a Ridgemont subcontractor's manpower shortfall.

Because notices were given, the submittal delay is compensable. Because 4 days were concurrent, Ridgemont receives a time extension for those days but no damages. Net: no liquidated damages, a $147,000 acceleration recovery, and the mezzanine priced through the CCD process.

The counterfactual is the contractor in the opening scenario: same facts, no notices, claim waived.

A claims checklist

At contract signing

  • Calendar the notice period for claims and post it where project staff see it.
  • Calendar preliminary notice deadlines for every state where lien rights matter.
  • Confirm the baseline schedule submission requirement and comply.
  • Identify whether the contract contains differing site conditions and no-damages-for-delay clauses.
  • Align dispute resolution clauses across prime, subcontracts, and design agreements.

During the work

  • Daily reports with manpower, equipment, weather, activities, and delays or interferences.
  • Monthly schedule updates, submitted and retained.
  • A written notice within the contractual period for every event that might support a claim — before the amount is known.
  • Confirming letters for every verbal direction.
  • Separate cost codes for changed and disrupted work from day one; reconstructed costs are far weaker evidence.
  • Photographs with dates, and RFI and submittal logs with response times.
  • Lien waivers exchanged only in the statutory form, and conditional waivers until funds clear.

At completion

  • Confirm the substantial completion date in writing.
  • Negotiate the punch list withholding to a multiple of remaining cost, not the full balance.
  • Reserve claims in writing before accepting final payment.
  • Deliver warranties, manuals, and as-builts to obtain retainage release.
  • Calendar the repose period for defect exposure.

Frequently asked questions

We gave verbal notice and everyone knew. Isn't that enough? Usually not. Most forms require writing, and courts enforce it. Actual knowledge helps in some jurisdictions and is not something to rely on.

Can the owner refuse to pay because the project is late? It may withhold liquidated damages if the contract provides them and the delay is non-excusable. Withholding undisputed amounts for other work may violate a prompt payment statute.

Our contract has pay-if-paid. Are we out of luck if the owner fails? Possibly on the contract claim. Check whether your state voids or limits the clause, and whether it can bar a lien or bond claim — in many states it cannot.

Do we lose lien rights if we do warranty work later? In most states warranty and punch list work does not extend the lien period. Track the last furnishing of original contract work.

Is a no-damages-for-delay clause enforceable? Generally yes, subject to exceptions for active interference, bad faith, unreasonable delay, and abandonment, and to statutory limits in several states.

What is concurrent delay worth? Usually a time extension without money — which defeats liquidated damages and is often the more valuable outcome.

Can we claim total cost? Only as a last resort, and only with proof that itemizing was impracticable, the bid was reasonable, the costs were reasonable, and you did not cause them. Expect the defense to attack every element.

Does the architect decide our claim? Under the standard forms, an initial decision maker does — often the architect, who is the owner's consultant. That decision is generally a condition precedent to mediation, not a final determination.

Conclusion

Construction contracts allocate three risks — cost, time, and design adequacy — and then impose a notice regime that determines whether the allocation is enforceable. A contractor with a meritorious differing site condition claim and no notice has nothing. An owner with a genuine defect claim filed after the repose period has nothing.

Everything that matters in a construction dispute is created during the project, by people with clipboards and email accounts, months or years before anyone consults a lawyer: the daily reports, the schedule updates, the RFI response times, the confirming letters, and the notices sent when relations were still friendly and sending them felt unnecessary.

That last point is the whole discipline. Notices are cheap when nobody is angry and impossible once everyone is.

Insurance and indemnity on a construction project

The risk allocation in the contract is worth only as much as the insurance standing behind it, and construction insurance has features that surprise parties familiar with ordinary commercial coverage.

Builder's risk covers the work in progress against physical loss. Negotiate who procures it (owner or contractor), whether soft costs and delay in completion are covered, the deductible and who bears it, coverage for materials in transit and in offsite storage, testing and startup coverage, and — critically — the duration, because policies often terminate at occupancy or substantial completion, leaving a gap before permanent property coverage attaches.

Commercial general liability covers bodily injury and property damage. Two provisions matter disproportionately. The "your work" exclusion in the standard form removes coverage for property damage to the insured's own completed work, subject to the subcontractor exception that restores coverage where the damaged work or the work causing damage was performed by a subcontractor. And whether defective construction constitutes an "occurrence" at all has divided state supreme courts, with several legislatures enacting statutes providing that faulty workmanship is an occurrence. The answer in the governing state determines whether a defect claim has any insurance behind it.

Additional insured status must be conferred by an endorsement, not a certificate of insurance, and the endorsement form matters enormously. Ongoing-operations forms do not cover completed operations; some forms limit coverage to liability "caused in whole or in part by" the named insured's acts; and several states' anti-indemnity statutes limit or void an upstream party's attempt to obtain coverage for its own negligence. Ask for the endorsement and the policy, not the ACORD certificate, which expressly disclaims that it confers rights.

Primary and non-contributory language plus a waiver of subrogation complete the transfer. Without them, the additional insured's own carrier may be forced to contribute, and the downstream carrier may subrogate against the party it was supposed to protect.

Anti-indemnity statutes. A majority of states restrict construction indemnity provisions, and they fall into three groups: those voiding indemnity for the indemnitee's sole negligence, those voiding indemnity for the indemnitee's own negligence in any degree, and those additionally restricting the use of additional insured coverage to accomplish the same transfer. A clause enforceable in one state can be void two states away, which is why multistate contractors should not use a single indemnity form.

Wrap-up programs. On larger projects an owner-controlled (OCIP) or contractor-controlled (CCIP) insurance program covers all enrolled parties under a single policy. Benefits include uniform limits and reduced litigation among insureds; risks include enrollment gaps, exhaustion of shared limits by earlier claims, and the deduction of insurance costs from bids that must be reconciled carefully.

Professional liability. Designers carry errors and omissions coverage, which is claims-made — meaning a claim must be made and reported during the policy period. Owners should require the designer to maintain coverage for a defined tail after completion, because a defect discovered in year four is uncovered if the designer let the policy lapse in year two.

Related articles

This article is provided for general informational purposes and does not constitute legal advice. Lien statutes, prompt payment acts, retainage limits, no-damages-for-delay restrictions, and repose periods vary substantially by state and are unforgiving of missed deadlines. Consult qualified construction counsel promptly.