Design-Bid-Build
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Design-bid-build is a project delivery method in which an owner engages a designer under one contract, waits for construction documents to reach a defined completion threshold, and then solicits competitive bids from contractors under a separate contract, with selection driven primarily by price.
Why the sequence changes what owners actually evaluate
Because the design is largely fixed before contractors compete, the owner's risk calculus during the design phase is almost entirely about qualifications, not price. This is where QBS applies most cleanly: the Brooks Act (1972) mandates qualifications-based selection for federally funded A/E services, and many state equivalents mirror that structure for design-bid-build public work. What experienced BD teams sometimes miss is that the contractor bid phase creates a second window of owner anxiety: if bids come in over budget, the owner often returns to the designer for scope reductions, and that relationship history matters the next time the owner is selecting a designer. A firm that has helped clients navigate post-bid value engineering quietly accumulates credibility that never appears in a project data sheet.
Where design-bid-build creates specific proposal complications
On the design side, SF-330 Section F (example projects) needs to reflect completed, bid, and built work rather than projects that were designed but handed off to a design-build entity, because owners evaluating design-bid-build pursuits are implicitly asking whether your documents can survive a hard-money competitive bid environment. A project that was designed under one delivery method and then repriced under another is not the same reference. Shortlist pools for public design-bid-build work typically run three to five firms, and the evaluation criteria in the RFQ or RFP will often include questions about your firm's cost estimating integration during design development, because document quality directly determines bid spread. Wide bid spreads and rejected low bids are a known liability for design teams, and sophisticated owners track that history even when they don't ask about it explicitly.
The institutional knowledge problem specific to this delivery method
Design-bid-build pursuits accumulate a type of data that most firms store poorly: the gap between the engineer's estimate at construction document completion and the actual low bid. That number, tracked across a project portfolio, is one of the clearest signals of document quality and estimating discipline, and it's exactly the kind of proof point a client services director wants to cite in a cover letter or project approach section. Most firms can't retrieve it because it lives in a project manager's memory or an archived email thread rather than in any system the marketing team can query. Kantiv captures that post-bid outcome data alongside the original project record so pursuit teams can surface it when an owner's evaluation criteria reward demonstrated cost reliability, without reconstructing it from scratch two days before submission.
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