That feeling usually has a source. Contractor proposals for commercial building projects don’t follow a standard format. Each contractor decides what to include, how to group costs, and what to flag as an assumption versus a commitment. When you are comparing bids side by side, you are often comparing documents that were built on different foundations, and the differences are not always visible at the total line.
The goal of this guide is to give you a working framework for reading and comparing commercial construction proposals on your own terms. By understanding what allowances, exclusions, and contingencies really mean and knowing where scope gaps often hide, you will be equipped to ask the right questions instead of relying on the contractor to interpret their own bid.
At W. Gohman Construction, we have spent over 75 years delivering commercial facilities across Minnesota. We know how proposals are written, and we know where the gaps tend to appear. What follows is a practical walkthrough of how to evaluate what you are actually being offered.
What Makes Commercial Contractor Proposals So Hard to Compare?
There is no standard format. Commercial construction proposals vary in how costs are organized and how vague language like “as needed” or “per plan” is applied. One proposal may have 40 line items. Another may have 12 covering the same project. One contractor includes site preparation in the price, while another assumes the site is already ready. The documents look similar at the total line while covering completely different ground.
If two bids are more than 10 to 15 percent apart, something is likely different in what they include. Before comparing totals, ask each contractor for a written breakdown by major cost category and confirm that each proposal addresses the same scope, allowances, exclusions, contingency, and change order process. Ask directly: “What assumptions are you making that, if wrong, would result in a change order?” See W. Gohman’s overview of the general contracting process for more context on how responsibilities are structured.
What Are Scope Gaps, and Why Do They Matter?
A scope gap occurs when required work that one or more contractors left out of their bid. The cost does not disappear, it shows up later as a change order. Common scope gaps include:
- Site preparation: grading, soil testing, excavation
- Permit fees and inspection costs
- Temporary utilities during construction
- Demolition or removal of existing structures
- Utility connections to the building
- Commissioning and system startup
Scope gaps often hide in the exclusions section, which many readers skip. Take the lower-priced proposals and ask, category by category: “Is this in your bid?” The price gap frequently narrows once missing scope is made explicit.
For more context on how general contractors structure project responsibilities, see W. Gohman’s overview of the general contracting process.
How Do Allowances, Exclusions, and Contingencies Affect Your Final Cost?
An allowance is a placeholder for a material or finish not yet specified. Two flooring allowances based on different finish assumptions carry very different cost exposure, even when the line item looks identical on paper. Ask each contractor what specification their allowances are based on, then apply the same selection across all bids.
Exclusions are items removed from scope entirely. Common examples include hazardous material abatement, unforeseen underground conditions, and third-party testing. Read every exclusion list and compare them across proposals. If excluded work is required, it will surface later.
A contingency is a budget reserve for unknowns. A proposal without one has not eliminated uncertainty, it has transferred that risk to you. Contingency needs vary by design completeness and are worth discussing with each contractor directly.
What to Do Before You Sign
When evaluating contractors for commercial building projects, the total price reflects decisions about scope, allowances, exclusions, and contingencies that vary significantly from one bid to the next. Read the exclusions. Examine the allowances. Ask about contingencies. Apply those answers consistently before drawing conclusions about price.
Gohman’s commercial building contractors build proposals designed to be understood and compared. Explore and learn more about working with a corporate building contractor before making your decision.
Ready to see what a transparent proposal looks like? Request a bid from W. Gohman’s commercial building contractors.