Construction material procurement process: every step from site request to paid bill

What material procurement means in construction

The construction material procurement process is how a builder or contractor gets the right material to site on time, at an agreed price, and pays only for what arrived. It runs from planning what is needed, through the site's request, approval, supplier quotations and the purchase order, to receiving the delivery, checking the supplier's bill and paying it. A Penn State construction management text notes that procurement is "sometimes referred to as purchasing" (Messner, Penn State); on a building site the two words mean the same work.

It matters because material is a large share of cost. The Construction Industry Institute's materials management handbook put materials and equipment at 50 to 60% of project cost and named lack of materials as the most common cause of construction delays (CII). The handbook dates from 1987, but the point hasn't changed: a late or short delivery stops the work it was meant for.

The procurement process at a glance, and who does what

The rule that makes it work is that no step starts without the record from the one before. No order without an approved request, no payment without a signed delivery. The construction material tracking guide shows where material is lost on site once it has arrived; this guide is about getting it there.

Step 1: Plan purchases from the BOQ and the programme

Planning is the step most small builders skip, and it causes most emergency purchases. Take the quantities from the bill of quantities or estimate, and the dates from the programme, and list each material with the date it must be on site. Then work backwards.

Worked example (sample numbers, counted in days before the pour): a first-floor slab is poured on day 0. Fixing its steel takes 3 working days, so 12 tonnes of rebar must be on site by day −4. The supplier needs 7 days, and you allow 1 day in case a truck is late, so the order must go out by day −12. Getting three quotes and the owner's approval takes 3 days, so the site must request the steel by day −15.

Keep the schedule next to the programme and review it weekly. When the programme moves, the order-by dates move with it. The construction progress tracking guide shows how to keep the programme honest, and the cost estimator gives a first bill of quantities if you don't have one yet.

Steps 2 and 3: Raise the material request and approve it by amount

The site engineer raises a material request (also called a requisition or indent) for the steel on day −15: item, size, quantity, project, phase and the date needed, plus what is already in the site store. A phone call isn't a request; it can't be checked against anything later. The material requisition form guide lists the fields and the difference between a requisition and a purchase order.

Approval limits decide who signs. A common pattern is that the project manager approves up to a set amount and the owner approves anything above it. In the example, the company's written limit is $2,000 for the project manager, so a steel request worth about $9,000 goes to the owner, who approves it from a phone the same day. The name, amount and time of the approval are recorded.

Step 4: Get quotations and choose the supplier

Ask at least three suppliers for the same item, quantity, specification and delivery date. Messner's text recommends at least three bids per scope of work for the same reason (Messner, Penn State). Compare the landed cost, not the headline rate: delivery, unloading, payment terms and whether they can meet the order-by date.

Supplier B looked cheapest on rate, but with delivery added it is $156 dearer than C, and its 10-day lead time would land the steel after fixing should start. The guide to comparing supplier quotations covers splitting an order between suppliers and what to do when quotes aren't like-for-like.

Step 5: Issue the purchase order (and what buyout means)

The purchase order goes to supplier C on day −12: 12 t of 16 mm rebar at $772 per tonne, delivered, $9,264 in total, with the delivery site, the receiver's name, the date needed, the basis of measurement (weighbridge or theoretical weight) and the payment terms. The supplier is asked to quote the PO number on every delivery note and bill. If anything changes later, issue a revision of the same PO rather than a new one, so the history stays together. The construction purchase order template has every field, with a free Excel download.

"Buyout" is the US name for the stage, early in a job, when a contractor places the main purchase orders and subcontracts at agreed prices. On a large project it is a phase of its own; on a small one it is simply placing orders against the procurement schedule.

The moment the PO is issued, $9,264 is committed. The phase budget for slab steel was $9,500, so only $236 is left before a single bill has arrived. That is what makes committed cost useful: a builder who waits for bills to see spending sees this overrun weeks later. See step 7 below and construction budget vs actual.

Step 6: Receive the delivery and record what arrived

The steel arrives in two loads: 7.2 t on day −6 and 4.6 t on day −5. The storekeeper checks each load against the PO before signing, writes the accepted quantity on the delivery note and photographs it. Together the loads come to 11.8 t, so 0.2 t (about one bundle) is short. The shortfall is recorded on the delivery and flagged to the project manager the same day, while the driver is still a phone call away.

• Count or weigh before signing. A delivery note signed "received in good order" without a count proves the truck came, not what was on it.
• Record damaged or rejected material on the note, and return it against the same order.
• Get the signed note to the office the same day. A delivery the office can't see doesn't count as received.
• Put the material into the site store, so what is issued to the work later can be checked against what came in.

The construction material tracking guide covers receiving in detail, and construction site inventory covers stock counts.

Step 7: Match the supplier's bill and pay

Supplier C bills 12 t at $772: $9,264. Before paying, accounts compares the bill with the order and the two signed delivery notes, line by line. This is the three-way match. The order and the bill agree on rate, but the site accepted 11.8 t, not 12. So $9,109.60 (11.8 × $772) is approved and $154.40 is held until the missing bundle arrives or the supplier sends a credit note.

Paying the matching part and holding only the difference keeps the supplier relationship intact and the records right. The payment is recorded against the supplier's ledger, so the balance owed is clear before the next order, and the person who approves the payment shouldn't be the one who raised the order or signed for the delivery.

Procurement measures and common mistakes for small builders

You don't need a procurement department to measure procurement. Five numbers, checked monthly, show where the process is breaking:

• Ordering by phone or voice note, with no written request or order to check the bill against.
• Choosing on rate alone and missing the delivery date.
• One person ordering, receiving and paying.
• Paying the bill total when the delivery was short.
• Seeing the cost only when bills arrive, after the budget is already gone.

Running procurement in a spreadsheet or in software

With one site and a handful of orders a month, a procurement schedule and an order register in a spreadsheet work, alongside a construction project management Excel template. The spreadsheet breaks when several sites buy from the same suppliers, delivery notes stay in site engineers' pockets and the register is updated after the bill is paid.

At that point every step needs to happen where the previous one was recorded. Construction procurement software keeps the request, approval, quotes, order, deliveries and bill on one trail, and deliveries feed the site store and the job's cost tracking. For how it fits with the rest of a builder's records, see what construction management software is.