Long-lead items: the completion date is decided by purchase orders, not by crew sizes

Pricing lead time risk at bid

Long lead items affect the bid as much as the schedule, and most estimating departments handle them with an optimism that the field later pays for.

Three questions belong in every bid review. First, does the proposed construction schedule actually permit the required procurement, or does winning this job mean committing to a date that the purchasing chain cannot support? That is a question to raise before submitting, because the bid is the last moment at which a contractor has leverage over the schedule. Second, are the quotes carried in the estimate still valid at the anticipated order date, and if not, what is the exposure? Third, does the contract allocate escalation and availability risk to the contractor without any relief mechanism, and has that been priced?

A practical technique is to list the three longest-lead items on the cover of the bid with their quoted durations and a stated assumption about award date and submittal turnaround. This does two useful things: it protects the contractor by making the assumption part of the offer, and it signals competence to sophisticated owners, who have usually been burned by a contractor who never mentioned procurement until month six.

Where the schedule genuinely cannot accommodate the lead time, the honest options are to propose an early release package for the critical equipment, to propose a phased completion, or to qualify the bid. All three are better than accepting a date that arithmetic says is impossible.

The procurement chain nobody schedules

A purchase order is not the beginning of a lead time; it is roughly the midpoint of a longer chain. The full sequence runs from design completion, through the subcontract award, submittal preparation, submittal review and approval by the design team, release for fabrication, fabrication itself, shipping, and finally delivery and installation.

Two of those steps routinely consume more time than anyone plans. Submittal review sits with the design team and is outside the contractor's control, and release for fabrication often waits on a coordination item that nobody identified as critical. A schedule that shows only the fabrication duration is understating the real lead time by weeks or months.

Building a long-lead register in the first two weeks

This is the single highest-return administrative task at the start of a project. The register is a simple table, maintained weekly, containing for each item: the specification section, the responsible subcontractor, the required on-site date driven by the schedule, the quoted lead time, the latest date the order can be placed, the submittal due date, the actual submittal date, the approval date, the release date, the confirmed ship date and the current status.

Working backwards from the required on-site date to the last responsible order date is the whole exercise. Once that date is visible, the conversation with the design team about submittal turnaround becomes concrete rather than abstract, because a missed review date now has a visible consequence.

Submittals are the real bottleneck

Contractors often treat submittals as a paperwork obligation and prioritize them by convenience. The correct prioritization is by lead time. The first submittals prepared and issued should be for the items with the longest fabrication durations, regardless of when those items are installed.

Three practices make a measurable difference. Issue a submittal schedule during preconstruction showing when each package will arrive for review, so the design team can plan resources. Agree a review duration in writing and track it, because unaddressed review delays are among the most common causes of excusable delay claims. And avoid batching unrelated submittals, since a single unresolved item can hold the approval of an entire package.

Release for fabrication and the deposit question

Fabrication rarely begins at approval. It begins at release, which may require a signed change order, a deposit, a confirmed color or finish selection, or resolution of a coordination conflict. Each of those is an opportunity for weeks to disappear quietly.

Deposits deserve particular attention. Many suppliers now require substantial deposits or progress payments before fabrication, which creates a cash requirement well before the material can be billed as stored material. That mismatch, between paying a supplier and being able to bill the owner, is a common and avoidable cash flow surprise. Address it in the schedule of values and confirm the owner's stored material requirements early.

Early release packages and buying equipment before award

When procurement cannot fit inside the construction schedule, the remedy is to start purchasing before the main contract begins. This is standard practice on projects with long-lead equipment and is worth proposing rather than waiting for the owner to suggest it.

The mechanism varies. The owner may issue a limited notice to proceed covering only the purchase of specified equipment, with a defined value and scope. The owner may purchase the equipment directly and assign the purchase order to the contractor later, which shifts cash and some risk but creates questions about warranty and responsibility that must be settled in writing. Or the contractor may be authorized to award a specific subcontract early under an interim agreement.

Each version needs the same three points resolved before anyone signs: who carries the risk if the project does not proceed and equipment has been ordered, who is responsible for storage, insurance and damage before installation, and how warranty periods are measured, since a warranty that begins at delivery rather than at substantial completion can expire before the building is occupied.

Owners resist early release less often than contractors expect, particularly when the alternative is explained in terms of the completion date rather than in terms of procurement mechanics. The conversation that works is short: this equipment takes this long, the building cannot be commissioned without it, and here is the last week it can be ordered.

Price escalation and holding a quote

Long lead times and price volatility interact badly. A quote valid for thirty days on an item that will not be ordered for ninety is not a price; it is an estimate. Contractors have three defensible responses.

The first is to order early and store, accepting carrying and storage cost in exchange for price certainty. The second is to negotiate a price hold with the supplier, sometimes in exchange for a deposit. The third is to include an escalation clause in the contract that allocates the risk explicitly, with a defined trigger, an index or documentation requirement, and a cap. What does not work is carrying an expired quote in a bid and hoping, which is how contractors discover a six-figure variance in month five.

Substitutions, and when they save the schedule

When an item's lead time threatens the completion date, an equivalent product with shorter availability can rescue the schedule. Handled properly, this is a legitimate and valuable service to the owner. Handled casually, it creates warranty and performance disputes.

The process should be formal: a written substitution request identifying the specified product and the proposed alternative, a comparison of relevant performance characteristics, any cost and schedule impact, and the design team's written acceptance. Never install a substitution on a verbal approval, and never assume that an equivalent in one respect is equivalent in all of them, particularly for fire-rated, acoustic or code-driven assemblies.

Storage, insurance and damage

Ordering early solves a schedule problem and creates a custody problem. Material delivered before it can be installed has to be stored somewhere, protected from weather and theft, insured, and inspected on arrival for transit damage.

Two habits prevent most losses. Inspect and photograph everything at delivery, before signing the delivery receipt, because damage discovered weeks later is almost impossible to attribute. And confirm insurance coverage explicitly for material stored off site, since builder's risk policies frequently limit or exclude it without an endorsement.

Utility connections, the lead time nobody controls

Power, gas, water and telecommunications connections are routinely the longest and least predictable item on a project, and the utility is not a subcontractor who can be pressured. Applications must be submitted early, often before design is fully complete, and the utility's own engineering, easement and construction processes can take many months.

Treat this as a first-week item. Identify the applications required, submit them immediately, obtain written confirmation of the utility's schedule, and communicate that schedule to the owner as a constraint on the completion date rather than as a risk the contractor has absorbed silently.

Running procurement as a weekly discipline

The register only works if someone owns it. In practice, the most effective arrangement is a fifteen-minute weekly procurement review, separate from the general project meeting, attended by the project manager, the person responsible for submittals and, when relevant, the affected subcontractor.

The agenda is short: which items have passed their last responsible order date, which submittals are overdue for issue or for review, which releases are held and why, and which confirmed ship dates have changed. Fifteen minutes weekly is enough to prevent almost every procurement-driven delay, which makes it the highest-return meeting on most projects.

A worked example

A project requires switchgear on site in week 46 to support energization and commissioning.

• Quoted fabrication lead time: 34 weeks.
• Shipping and delivery: 2 weeks.
• Release to fabrication after approval, including deposit processing: 2 weeks.
• Design team review of the submittal: 3 weeks.
• Subcontractor submittal preparation: 3 weeks.
• Subcontract award to the electrical contractor: 2 weeks.
• Total backwards from week 46: the electrical subcontract must be awarded no later than week 0, meaning at project start.

This is a common and instructive result. On a project of that duration, the single decision that determines whether commissioning happens on time is made in the first week, before a single foundation is poured, and it is a purchasing decision rather than a construction one.

Mistakes that cost the schedule

• Using lead times from a previous project instead of verifying current ones.
• Scheduling only the fabrication duration and ignoring submittal and release time.
• Prioritizing submittals by installation order rather than by lead time.
• Discovering a deposit requirement after the schedule was committed.
• Assuming a utility connection will follow the construction schedule.
• Allowing a substitution on verbal approval.

Where to start

On your next project, build the long-lead register in week one and calculate the last responsible order date for every item on it. Issue the submittal schedule to the design team and get the review durations agreed in writing. Submit utility applications immediately. Put the fifteen-minute weekly procurement review on the calendar and do not let it be absorbed into the general meeting. Those four steps cost almost nothing and prevent the category of delay that is hardest to recover from, because no amount of overtime manufactures a transformer faster.

Frequently asked questions

What is a last responsible order date?

It is the latest date an item can be ordered and still arrive in time to be installed when the schedule requires it, calculated by working backwards from the required on-site date through every step of the procurement chain. That chain includes delivery and shipping, fabrication, release to fabrication after approval including any deposit processing, design team review of the submittal, subcontractor preparation of the submittal, and award of the subcontract itself. Contractors who schedule only the quoted fabrication duration understate the real lead time by weeks or months, because submittal review and release are frequently the longest uncontrolled steps. Once the date is visible in a register, conversations about review turnaround become concrete rather than abstract.

Which submittals should be prepared first?

Those for the items with the longest lead times, regardless of when the work is installed. Contractors commonly prioritize submittals by construction sequence or by convenience, which means the packages that control the completion date are prepared late. Three practices help: issue a submittal schedule during preconstruction so the design team can plan review resources, agree review durations in writing and track them, since unaddressed review delays are a frequent basis for excusable delay claims, and avoid batching unrelated items into a single package, because one unresolved component can hold approval of everything else in it. Prioritizing by lead time costs nothing and prevents the most expensive category of delay.

What is an early release package?

It is a mechanism for beginning procurement of critical equipment before the main construction contract is awarded, used when the lead time cannot fit inside the construction schedule. The owner may issue a limited notice to proceed covering only specified purchases, may buy the equipment directly and later assign the purchase order to the contractor, or may authorize an early subcontract under an interim agreement. Whichever form is used, three points must be settled in writing beforehand: who bears the risk if the project does not proceed after equipment is ordered, who is responsible for storage, insurance and damage before installation, and when warranty periods begin, since a warranty running from delivery can expire before the building is occupied.