Supplier & Sub Pricing
Terminology
The language of subcontractor and supplier pricing. Get these definitions right — they have legal and financial consequences on real bids.
Performs work at the jobsite
An entity bound by contract to the Prime Contractor to perform a specific portion of the scope of work at the project. Associated with specialty skills: surveying, electrical/comm, guardrail, bridge erection, pavement markings, signs, etc.
Delivers materials only — not at the site
An entity who supplies materials or services under terms of a Purchase Order or other legal instrument. A supplier does NOT perform contract work at the jobsite. This distinction matters legally and for insurance/bonding purposes.
Direct contract with the Prime
A subcontractor legally bound to the Prime contractor through a direct subcontract agreement. The Prime is responsible for the first tier sub’s work and compliance.
Sub under a sub
A subcontractor under contract to a first tier subcontractor. Third tier is under contract to a second tier, and so on. The chain of responsibility flows up to the Prime. Many public contracts limit or require disclosure of tiered subs.
Request For Quotation / Proposal
A written request prepared and issued by a contractor to solicit subcontractor or material pricing proposals during bid preparation. A well-written RFQ defines the scope precisely so you get comparable, apples-to-apples quotes back.
Written pricing proposal from a Sub
A quote can be verbal, but customary (and recommended) practice is always to acquire a written quote listing the specific work to be performed and firm pricing. Verbal quotes are risky — they’re hard to enforce after bid day.
Pricing proposal from a Supplier
A formal price for materials, typically on the supplier’s standard quote form. Always check the fine print — suppliers typically disclaim responsibility for quantities. You are responsible for your own quantity takeoff.
The estimator’s best guestimate
A price inserted into the estimate in the absence of a quotation. Can be very volatile depending on scope. Use only for minor items where cost variance has minor impact on the overall bid. Never plug a major scope item.
Draft un-priced proposal before bid day
Prepared by a subcontractor and provided to prime contractors several days before bid date, letting primes see what scope the sub intends to bid. The scope letter becomes the official bid when submitted with final pricing included.
Owner-issued modification to bid documents
A written notice issued by the Owner prior to bid date that clarifies or modifies the bid documents. Addenda become part of the contract upon award. Subs must acknowledge addenda in their scope letters. Primes must acknowledge ALL addenda for a responsive bid.
Work explicitly IN the quoted price
Items listed on a quotation as specifically included in the proposed price. When reviewing competing quotes, only items in inclusions can be reliably compared. If an item isn’t listed as included, assume it’s excluded.
Work explicitly NOT in the quoted price
Items listed on a quotation as specifically excluded from the proposed price. These are costs you must account for elsewhere in your estimate — either with your own forces, another sub, or a plug. Exclusions are where budget gaps hide.
Defines the exact point of delivery
A term defining where a supplier’s price and responsibility ends. The buyer is responsible for all costs beyond the FOB point. The most common FOB points in construction are “FOB truck, jobsite” (supplier delivers) and “FOB plant” (buyer picks up). See the diagram below.
The FOB point determines which party pays for freight at each leg. Everything before the FOB point is the supplier’s cost. Everything after is the buyer’s cost.
| FOB Term | What Supplier Includes | What Buyer Must Add |
|---|---|---|
| FOB Plant | Material loaded at plant only | All freight, trucking, delivery to jobsite, offloading |
| FOB Truck, Supplier Dock | Material loaded on truck at supplier’s facility | Trucking to jobsite, offloading, placement |
| FOB Truck, Jobsite | Delivery by truck to jobsite gate / staging area | Offloading, distributing, placement |
| FOB Jobsite, Unloaded | Delivery AND offloading at jobsite | Distribution and placement only |
Subs vs. Suppliers
Understanding the fundamental differences in how you price, manage, and protect yourself with each type of vendor.
Performs Work at the Site
- Bound by a formal subcontract agreement
- Performs physical work — labor, equipment, materials
- Must be licensed, insured, and often bonded
- Subject to the prime contract’s terms and conditions (flow-down clauses)
- Schedule and safety are your responsibility to manage
- Scope disputes are complex — covered by subcontract language
- Can bond their work scope (performance & payment bond)
- Pricing is all-inclusive: labor + equipment + materials + overhead + profit
- Quotes should be written and scope-specific
- First tier subs can hire second tier subs (verify this is allowed)
Delivers Materials Only
- Governed by a Purchase Order (PO), not a subcontract
- Delivers product — does NOT perform work at site
- Pricing is per-unit (ton, LF, SF, each, etc.)
- You are responsible for quantity accuracy — always use your own takeoff
- FOB point determines who pays freight — check carefully
- Lead times and delivery schedules are critical to plan around
- Material approval submittals must match spec requirements
- Pricing may fluctuate with market (fuel, steel, concrete, etc.)
- Quotes often disclaim responsibility for quantities
- No bonding — credit terms and relationships are your protection
Clear inclusions/exclusions, bonded, signed subcontract. Low scope gap risk.
Hard to enforce. Scope disputes likely after award. Always get written confirmation.
Estimator’s guestimate. Can be significantly wrong for large or complex scopes.
Clear unit price, confirmed delivery point. Risk is your quantity accuracy.
Hidden freight cost not in estimate. Common source of job cost overruns.
Supplier disclaims quantity accuracy in fine print. Always use your own takeoff.
| Specialty Scope | Why Subbed Out | Key Bid Day Considerations |
|---|---|---|
| Surveying | Licensed professional requirement; specialty equipment | Confirm scope: staking only? As-built? How many setups? Mobilization included? |
| Electrical / Communications | Licensed electrician required; specialty knowledge | Conduit vs. pull only? Traffic signals included? Generator connections? |
| Guardrail | Specialized crews and equipment | Posts, rail, and end treatments all included? Removal of existing? |
| Bridge Erection / Steel | Heavy lift equipment; ironworker expertise | Crane size, beam setting, bolting, shear studs — all confirmed? |
| Pavement Markings | Specialized equipment; safety requirements | Thermoplastic vs. paint? Night work premium? How many passes? |
| Signs | MUTCD requirements; specialty fabrication | Fabrication and installation both included? Permit required? |
| Concrete Paving / Structures | Slip-form equipment and expertise | Mix design, curing, forming, finishing all included? |
| Seeding / Landscaping | Specialty equipment; plant material knowledge | Hydroseed? Erosion blanket? Watering? Establishment period warranty? |
Managing Quotes
The most important requirement on bid day is to be ORGANIZED. You must be prepared to receive and analyze quotes — sometimes with very little time. Here’s the system.
When Receiving Subcontractor Quotes
When Receiving Supplier Quotes
Example: Annotating a Phone Clarification
Handling Lowball Quotes
What to do when a quote comes in dramatically below all the others. Using it blindly is a major risk. Ignoring it could cost you the bid. Here’s the professional protocol.
When a Quote Appears Significantly Below Market
Legitimate competitive advantage
Sub confirms scope is complete. They have lower overhead, a unique production method, or material source advantage. They’re willing to bond. Chief estimator approves. Use the number with confidence.
Scope gap suspected
Sub can’t explain the low price. Scope walkthrough reveals missing elements. Unwilling to bond. In this case, either use a higher comparable quote, adjust the price to market with the sub’s number as a starting point, or get your chief estimator involved.
Error or unqualified bidder
Sub made a calculation error and wants to withdraw. Sub is not licensed or experienced in this scope. No explanation given and refuses to bond. Sub is unfamiliar with the spec requirements. Walk away from this number — the risk of performance failure is too high.
Never reveal other bidders’ prices
When you call to verify, advise the sub they appear “significantly below the other bidders” — but do NOT tell them by how much. If you reveal the gap, you give them an opportunity to raise their price to just below the next bidder. Protect your bid information.
Anatomy of a Quote
What to look for — and what to be suspicious of — in every sub and supplier quote you receive. Know every section before bid day.
What a Complete Sub Quote Should Contain
What a Complete Supplier Quote Should Contain
Sub may not have bidded the updated scope
If an addendum changed the scope and the sub didn’t acknowledge it, their price may not reflect current requirements. Call immediately and confirm they have the latest documents.
“Electrical as per plans and specs”
A scope statement this broad hides everything. Subs often use vague language to leave room for change orders. Push for an itemized inclusion list before accepting the quote.
More out than in
A quote with a long exclusion list may look cheap but may be missing critical scope. Tally the value of all exclusions — the “cheap” quote may actually be the most expensive once gaps are plugged.
Price may not hold to award
If no validity period is stated, a sub or supplier can revise their price after bid day, especially if material costs spike. Always get a stated validity period and confirm it extends beyond expected award date.
Quantity disclaimer buried in fine print
Supplier shows a total price based on their quantity. If their count is wrong, you bear the shortfall. Always extract the unit price and apply your own quantity.
Not legally binding
A quote without an authorized signature is not binding. The sub or supplier can walk away from it without consequence. Always get a signature or email confirmation from an authorized representative.
Bid Day Checklists
Printable mental checklists for the two most critical tasks on bid day. Work through these systematically — the pressure is high and details get missed.
Sub Quote Evaluation Checklist
Supplier Quote Evaluation Checklist
Before Bid Day — Do These in Advance
Glossary
Every term from the lecture, defined precisely. These terms appear in real bid documents, subcontracts, and purchase orders.
Self-Check Questions
Test your understanding. Answer each before revealing — these reflect the type of judgment calls you’ll face on a real bid.
Flashcards
Click any card to flip. 24 cards covering every key concept, term, and practical judgment rule from the lecture.
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