Bid solicitation is the process by which a general contractor invites subcontractors and suppliers to submit pricing for specific scopes of work on a construction project. Done well, it results in competitive pricing, qualified trade partners, and a smooth transition from preconstruction to construction. Done poorly, it leads to incomplete coverage, inflated pricing, and subcontractors who aren't equipped to perform the work. Here's a comprehensive guide to getting it right.
Phase 1: Pre-Solicitation Planning. Before sending a single bid invitation, take time to plan your approach. Review the complete drawing and specification set to identify every trade package you need to solicit. Create a bid package matrix that lists each trade, the relevant drawing sheets, specification sections, and the number of bidders you want to invite. For most trades, three to five qualified bidders provide adequate competition without oversaturating the market.
Build your bidder list from your prequalified subcontractor database. For each trade, select firms that have the appropriate license, bonding capacity, insurance coverage, and experience with your project type. Include a mix of firms you've worked with previously and new companies you want to evaluate. Relying on the same three subcontractors for every project limits your competitive exposure and creates dependency risk.
Phase 2: Bid Package Preparation. A well-prepared bid package dramatically improves the quality of proposals you receive. Each package should include a clear scope description that defines what's included and excluded, the relevant drawing sheets and specification sections, the project schedule with milestone dates, site logistics information, special conditions or requirements, and your bid form template.
The scope description is the most critical document. Ambiguity in scope leads to qualifications, exclusions, and misunderstandings that complicate bid comparison and create change order exposure during construction. State explicitly what's included and what's not. If Division 09 finishes include paint but not wall protection, say so clearly.
Phase 3: Solicitation and Communication. Send bid invitations at least two to three weeks before the bid due date for typical commercial projects. Complex or large projects may require four to six weeks. Include a pre-bid meeting or site visit for projects where existing conditions are a significant factor.
Establish a formal question-and-answer process. Require all questions in writing, and distribute answers to all bidders on that trade package. This ensures fairness and reduces the volume of individual phone calls. Set a question deadline at least three to five days before the bid due date to give subcontractors time to incorporate the answers into their pricing.
Phase 4: Bid Receipt and Evaluation. Accept bids only through your designated channel, whether that's a bid management platform, email to a specific address, or physical delivery. Document the date and time each bid is received and maintain a log of all submissions. Late bids should be handled according to your company's stated policy.
Evaluate bids systematically using the scope checklist from your bid package. Don't just compare bottom-line numbers. Review each bid for scope completeness, qualifications, schedule assumptions, labor rate structures, and unit prices for potential change order work. The lowest compliant bid isn't always the best value when you factor in the subcontractor's track record, financial stability, and capacity.
Phase 5: Award and Closeout. Notify the successful bidder promptly and issue a letter of intent or subcontract. Equally important, notify unsuccessful bidders and thank them for their participation. Subcontractors who invest time in preparing a quality bid deserve a timely response.