How to Bill for Stored Materials in Construction Pay Apps

To bill for stored materials in construction pay apps, you enter the dollar value of purchased-but-uninstalled materials in Column F of the AIA G703 continuation sheet, then support that line with documentation proving the owner has approved the storage arrangement, title has transferred, the goods are insured, and the supplier has been paid. The documentation burden is heavier than for installed work, and that is where most applications stall.

On-Site Versus Off-Site Rules

AIA Document A201-2017 draws a sharp line between the two. Under Section 9.3.2, materials “suitably stored” on the project site can be included in a pay application automatically. Off-site materials cannot. The owner must give advance written approval, and that approval has to identify the specific storage location.¹ Renting a warehouse and starting to bill without getting that approval first is one of the fastest ways to have the request rejected.

The same section requires procedures “satisfactory to the Owner” to establish the owner’s title to the materials, and billing for off-site items must include insurance, storage, and transportation costs back to the job site.¹ You cannot bill the raw material cost alone when the goods sit off-site.

ConsensusDocs Form 750 handles subcontractor stored material similarly in Section 8.2.4, requiring bills of sale, insurance certificates, and whatever other documentation the owner or GC considers satisfactory to establish title. On federal work, FAR 52.232-5 lets the contracting officer consider on-site materials in progress estimates, but off-site billing requires that the contract specifically authorize it and that the contractor furnish “satisfactory evidence that it has acquired title to such material and that the material will be used to perform this contract.”² The contracting officer has wide discretion, so expect a higher documentation bar on federal projects than on comparable private work.

The reason every version of this rule circles back to title: the owner is paying for goods it does not possess, so it needs to own them on paper. AIA A201 Section 9.3.3 states that the contractor warrants title to all work covered by an application for payment will pass to the owner no later than the time of payment.¹ Without that transfer, if the contractor becomes insolvent, the owner may find itself competing with other creditors for materials it already paid for.

The Documentation Package

A stored material application needs much more than a line on a pay app. The specifics vary by contract, but the core requirements run across AIA, ConsensusDocs, and federal work.

Bills of Sale and Paid Invoices

A bill of sale is the document that formally transfers the contractor’s ownership interest to the owner. It travels with copies of paid invoices from the supplier or manufacturer showing what was purchased, when, and for how much. The quantities and dollar amounts on those invoices must match the pay application line by line. Discrepancies are the most common reason architects flag stored material requests for further review.

Note the word “paid.” Many owners and architects will not approve stored material billing until the contractor can show the supplier has actually been paid, not merely invoiced. Canceled checks, a bank statement showing the wire, or confirmation of cleared payment all reduce the risk that a supplier will later file a lien against the project for materials the owner thought it had already purchased.

Inventory List and Photographs

The inventory list must correspond to the line items on your schedule of values. Include manufacturer name, model numbers, serial numbers where applicable, and exact quantities. Rounding and estimates do not belong here.

Photographs should show the materials organized and clearly labeled with the project name and the owner’s name. Labels have to be legible in the image. Date-stamped photos are standard, and some owners now require geotagged images that confirm the storage location matches the approved site. Physical tagging of each item also serves a dual purpose: it demonstrates the goods are segregated for one specific contract, and it discourages the contractor from redirecting them to another project.

Storage Location Details

For off-site storage, document the exact address, the security measures at the facility, and the environmental conditions. Moisture- or temperature-sensitive materials need climate-controlled storage. The general standard is above 50°F in winter, below 80°F in summer, and relative humidity below 50%; once humidity climbs past 55%, the risk of corrosion, mold, and material degradation rises quickly. Custom millwork, electronics, and coated metals are especially vulnerable. The contract may require that the storage facility carry its own bond or insurance, but the contractor remains responsible for the condition of the goods until they are incorporated into the work.

Insurance Requirements

Insurance is where stored material billing most often gets expensive and where claims most often stall. The contractor must provide a certificate of insurance, commonly an ACORD 25 form, that names the project owner as an additional insured. The policy has to cover the full replacement value of the stored materials at the specific location where they are being held.

A standard builder’s risk policy may cover off-site storage and transit, but coverage varies. Some policies include automatic off-site coverage, others impose sub-limits per location, and some exclude off-site storage entirely. Do not assume last project’s policy covers this project’s warehouse. Check the actual terms, and when the off-site value is substantial, consider whether a separate inland transit or installation floater makes more sense.

Transit coverage needs its own look. Moving high-value items from warehouse to site introduces risk that may be subject to per-conveyance sub-limits. If you are trucking $200,000 of custom glazing and your transit sub-limit is $50,000, you have a problem before the truck leaves. Review the sub-limit against the actual value per shipment and adjust coverage before the materials move. Without insurance documentation that specifically covers the storage location and names the right parties, most architects will reject the stored material portion of a pay application outright.

Lien Waivers From Suppliers

Lien waivers assure the owner that the people who manufactured or supplied the materials will not later claim they went unpaid and file against the project. When you bill for stored materials, expect the owner or GC to require waivers from every supplier involved.

The type of waiver depends on the timing. A conditional progress waiver is submitted with the pay application and takes effect only once payment clears. An unconditional waiver confirms a prior payment was received and waives lien rights immediately for the covered amount. The usual sequence for stored materials is a conditional waiver from the supplier at billing, exchanged for an unconditional waiver after payment clears. If sub-tier vendors or fabricators contributed to the stored goods, their waivers may also be required. Building the waiver requirement into your purchase orders and subcontracts from the start keeps this from becoming a bottleneck once a pay application is already pending.

Filling Out the G702 and G703

The G703 continuation sheet is where stored material values are formally recorded. Column F is labeled “Materials Presently Stored,” and this is where you enter the dollar value for which you are requesting payment. Column F has to be recalculated every pay period, because it reflects the running total of materials stored but not yet installed, including both newly stored items and anything carried forward from prior applications.³

Column G totals completed and stored to date by adding work completed (Columns D and E) to the stored materials value in Column F.³ That total flows up to the G702 Application and Certificate for Payment, which summarizes contract status, total earned to date, retainage, previous payments, and the current amount due.⁴

Unit costs for stored materials cannot exceed the original contract values for those line items. If the schedule of values lists 500 lighting fixtures at $100 each, you bill $50,000 for 500 fixtures in storage, not an updated market rate. Billing above contract value is a red flag that can trigger an audit and suspend future payments. Billing below contract value because of a supplier discount is fine. Be consistent. The values on the G703 have to reconcile with your invoices, your inventory list, and your schedule of values at the same time.

Verification, Approval, and Payment Timing

After the pay application and its supporting documentation go through the project management system, the architect or a third-party inspector usually schedules a visit to the storage facility. The inspection verifies three things: the materials exist in the claimed quantities, they are segregated from the contractor’s general inventory, and they are labeled with the correct project and owner information. The inspector may spot-check serial numbers against the invoices.

If everything checks out, the architect certifies the application and the owner pays on the standard cycle. On private projects, payment timing follows whatever the contract specifies, commonly 30 days after certification. On federal projects, FAR 32.904 sets progress payments due 14 days after the designated billing office receives a proper payment request.⁵

Retainage is usually withheld from stored material payments at the same rate as installed work, generally 5% to 10% depending on contract and jurisdiction. Some contracts reduce retainage on stored materials to incentivize early procurement, but that is negotiated, not automatic. Retainage on stored materials is normally released with overall project retainage at substantial completion under AIA A201 Section 9.8.5.¹

Moving Stored Materials to Work Completed

When stored materials are installed, their value shifts from Column F to the work-completed columns (D and E) on the G703. The total in Column G stays roughly the same for that line, because the asset moved from one earned category to another. What changes is the characterization: the owner is no longer paying for something sitting in a warehouse but for something physically in the building.

Missing this transition is one of the more common bookkeeping errors on large projects. Leave $80,000 in the stored column and simultaneously bill $80,000 of work completed for the same materials, and you have billed the owner $160,000 for an $80,000 asset. Even unintentional, that kind of overbilling can trigger payment suspension, back-charges, or a formal dispute. Architects who catch it tend to lose confidence in the entire application, not just the affected line.

Track every material movement from warehouse to site with delivery receipts, each one referencing the original storage documentation so the paper trail connects the item billed as stored to the item now installed. On a project with dozens of stored line items arriving over months, a spreadsheet or project management tool that flags un-transitioned stored values each billing cycle will save you from exactly this problem.

If You’re a Subcontractor

Subcontractors face every requirement the GC faces, plus one more layer of approval. The subcontractor submits stored material documentation to the GC, who reviews it, incorporates the approved values into the prime pay application, and sends the combined package to the architect and owner. The GC is vouching for the subcontractor’s stored materials, which is why GCs scrutinize sub documentation before it moves up.

ConsensusDocs 750 Section 8.2.4 conditions a subcontractor’s stored material payment on the same title-transfer and insurance requirements that apply to the GC. Before purchasing materials for early procurement, get written confirmation from the GC that stored material billing is permitted under the prime contract. The prime contract may not allow off-site storage at all, and the GC cannot authorize what the owner has not approved. Payment flow-down timing is a separate concern: even if the owner pays the GC promptly, a pay-when-paid subcontract may delay the subcontractor’s money to the next billing cycle. Clarify payment terms before materials are ordered, not after they are sitting in a warehouse accruing storage fees.

Common Reasons Stored Material Applications Get Rejected

Missing owner pre-approval for off-site storage. Billing from an unapproved location will be rejected no matter how clean the rest of the file is. Get written approval of the storage site before materials ship.
Insurance that names the wrong parties or location. A certificate listing the wrong warehouse address or omitting the owner as additional insured is worthless. Check the certificate against the actual storage address before submitting.
Unit costs above the schedule of values. If stored materials are billed above the contracted line item, the architect has no basis to approve them. Bill at or below contract value.
No proof the supplier was paid. An invoice is not proof of payment. Include evidence of cleared payment to prevent downstream lien exposure for the owner.
Failing to transition items after installation. Leaving installed goods in the stored column creates a double-billing situation that erodes trust and may trigger a full audit.
Photographs without legible labels. A photo of shrink-wrapped pallets in a dim warehouse proves nothing. Labels have to be clearly visible and identifiable.

AIA A201 Section 9.3.1 requires that pay applications be supported by “all data substantiating the Contractor’s right to payment,” including releases and waivers of liens from subcontractors and suppliers.¹ The architect who signs the payment certificate is personally certifying the application’s accuracy, so expect thorough scrutiny. Incomplete packages do not get partially approved. They get sent back.

1
The American Institute of Architects. AIA Document A201 – 2017 General Conditions of the Contract for Construction
2
Acquisition.GOV. FAR 52.232-5 Payments Under Fixed-Price Construction Contracts
3
AIA Contract Documents. Instructions for G703-1992 Continuation Sheet
4
AIA Contract Documents. Instructions for G702-1992 Application and Certificate for Payment
5
Acquisition.GOV. FAR 32.904 Determining Payment Due Dates