Contracts

What is sole source in construction?

Sole source means buying from one contractor or supplier without competition. In construction it shows up two ways: an owner awarding a contract to one firm without bidding, and a specification that names one product with no substitutes.

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A sole source purchase skips competition. FAR 2.101 defines a sole source acquisition as a contract entered into, or proposed, by an agency after soliciting and negotiating with only one source. Private owners can sole source whenever they like. Public owners usually cannot, unless a specific exception applies and they document why. Contractors run into the idea from both sides: sometimes they are the one firm an owner wants, and sometimes they are stuck pricing a spec that allows only one manufacturer.

When federal agencies can sole source

Federal contracts normally require full and open competition. FAR 6.302 lists seven exceptions:

  1. Only one responsible source, and no other supplies or services will satisfy agency requirements.
  2. Unusual and compelling urgency.
  3. Industrial mobilization; engineering, developmental, or research capability; or expert services.
  4. International agreement.
  5. Authorized or required by statute.
  6. National security.
  7. Public interest.

Each use needs a written justification and approval. Under FAR 6.304, the contracting officer's certification serves as approval up to $900,000; above that, approval moves up to the agency's competition advocate, then the head of the procuring activity, then the senior procurement executive as the dollar value climbs. Justifications are generally made public on SAM.gov within 14 days after award under FAR 6.305, with different timing for urgency awards and brand-name justifications. State and local agencies follow their own procurement laws, which usually have similar ideas: emergency, single available source, or a small-dollar exception.

Sole-source specifications

The more common contractor experience is a spec that says "Basis of design: Brand X, no substitutions." FAR 6.302-1(c) notes that a description requiring a particular brand name or product peculiar to one manufacturer does not provide full and open competition, so on federal work it must be justified the same way. On private work, owners sole source products for good reasons: matching an existing building automation system, a campus-wide door hardware standard, or a roofing warranty tied to one system.

A worked example

A school district renovating two classroom wings specifies access control panels from the manufacturer already installed in its other 14 schools, with no substitutes. Under state law, the district documents why: one system for its security staff, and integration with existing software. The electrical sub pricing the job can only get panels through that manufacturer's authorized dealer network, and the local dealer knows it. The sub gets its price early, asks for the dealer's quote validity in writing, and flags the lead time to the GC so the panels go on the long-lead items list.

Common mistakes and disputes

  • Submitting a substitution request on a no-substitution spec and assuming it will be accepted. Price the named product.
  • Missing escalation risk. A single supplier has pricing power; get quote expiry dates in writing.
  • On public work, treating a sole-source award as a sure thing. Competitors can protest if the justification is weak.
  • Confusing sole source with best value procurement, which still involves competition.

Related: set-aside contract, procurement, and how to manage long lead items. Smart Business Automator tracks purchase orders and shipments so a single-source item with a long lead time stays visible; see construction workflow automation.

Frequently asked questions

What does sole source mean in construction?

Buying from a single contractor or supplier without competition. It covers both contracts awarded without bidding and specifications that allow only one product.

Can a public agency award a construction contract without bidding?

Only under exceptions in its procurement rules. For federal agencies, FAR 6.302 lists seven, such as only one responsible source or unusual and compelling urgency, and each needs a written justification and approval.

What is the difference between sole source and single source?

Sole source usually means only one source can meet the need. Single source often means several sources exist, but the buyer chose one for a reason such as compatibility or standardization.

Can a contractor challenge a sole-source spec?

You can ask questions or request substitutions during bidding if the documents allow. On public work, other vendors may be able to protest a poorly justified sole-source requirement.

Sources

  1. Acquisition.gov: FAR Subpart 6.3 Other than full and open competition
  2. Acquisition.gov: FAR 6.302-1 Only one responsible source
  3. Acquisition.gov: FAR 2.101 Definitions
Written and edited by

Maurice Francois writes and edits construction operations guides for Smart Business Automator. More from Maurice on the Scaling Legends podcast.

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