What Is Qualifications-Based Selection (QBS), and Why Does It Matter for A/E/C Firms?

If you work on public-sector A/E pursuits, you have likely heard the term Qualifications-Based Selection, or QBS. It is a procurement method widely used for public-sector architecture and engineering projects, notably under the federal Brooks Act, where firms are selected based on qualifications and past performance first, with fee negotiated only after a firm is chosen. Understanding how QBS actually works can change how you approach your next proposal.

What Is QBS?

QBS is a formal procurement process in which a public agency evaluates and ranks A/E firms based on their qualifications, experience, and technical approach before any discussion of price takes place. It is the standard selection method for many government and public agency contracts, from municipal infrastructure projects to federal facilities work. Only after a firm is chosen as the most qualified does the agency negotiate a fair and reasonable fee.

How QBS Differs From Low-Bid Procurement

Construction procurement is often driven primarily by price: the lowest responsive, responsible bidder typically wins. QBS flips that order for professional design services. Instead of comparing dollar figures first, agencies evaluate demonstrated expertise, relevant project experience, and the strength of the proposed team. Fee only enters the conversation once a firm has already been identified as the best qualified for the job.

What It Means for Your Proposal

Because price is not the deciding factor, at least initially, your proposal and interview need to work harder to demonstrate genuine qualification fit. That means highlighting relevant past projects, spotlighting the specific experience of your key personnel, and showing a clear understanding of the particular challenges of this project rather than a generic pitch.

The Takeaway

Firms that understand the mechanics of QBS can tailor their proposals to what evaluators are actually scoring, rather than treating every pursuit the same way regardless of procurement method. Knowing the rules of the game is the first step to playing it well.