When you are responsible for your company’s growth, controlling costs is always near the top of the list. So when construction bids come in and one number sits well below the rest, it is tempting to circle it and move on. In commercial construction, though, the cheapest bid up front is often the most expensive project in the end. The savings you think you are capturing on day one tend to reappear later as change orders, delays, and quality shortcuts.
Why the lowest bid is so tempting, and so risky
A low bid feels like a win because it is the one part of a complex decision that is easy to compare: a single dollar figure. When one proposal comes in dramatically under the others, that gap is rarely a bargain. More often it is a signal that work was underestimated, left out, or will be billed back to you later.
The hidden costs of the lowest bid
Here is where the “savings” actually go.
- Change orders and scope gaps. Low bids often leave out key elements, by mistake or by design. Once construction starts, those missing pieces come back as change orders at premium prices. Every omission at bid time quickly erases any initial savings.
- Quality shortcuts. To hit a rock-bottom number, a contractor may substitute cheaper materials or lean on less-experienced crews. Those choices are invisible at the ribbon-cutting and expensive afterward, surfacing as failed finishes, callbacks, and premature repairs months or years after you open.
- Schedule delays and disputes. In the traditional model, the architect, engineers, and builder work under separate contracts. When something does not line up in the field, that fragmentation turns into finger-pointing, and finger-pointing turns into delay. For a commercial owner, a slipped schedule is not just an inconvenience; it can push back a lease start, a move-in, or the day the building starts generating revenue.
- The cost you live with for decades. The bid covers construction. It does not cover the years you operate the building. Cheaper systems and finishes raise energy, maintenance, and replacement costs long after the project closes, which is why the lowest bid and the lowest total cost of ownership are rarely the same building.
| Factor | Lowest-bid model | Best-value design-build |
| Contract structure | Separate designer and builder | One team, one contract |
| Price certainty | Low headline number, unknown final cost | Cost shaped during design, fewer surprises |
| Change orders | Common, and a profit path for lowball bidders | Fewer, because scope is settled early |
| Schedule | Sequential and slower | Overlapping phases, faster delivery |
| Accountability | Split, with room for finger-pointing | A single point of responsibility |
What the research actually shows
This is not just a contractor’s opinion. Decades of independent research, including studies from the Design-Build Institute of America, have compared delivery methods head to head, and the integrated design-build model consistently outperforms the traditional low-bid (design-bid-build) approach.
Comparing design-build to the traditional design-bid-build model, industry research has found design-build projects average:
- Roughly 102% faster delivery
- About 3.8% less cost growth
- About 1.7% less schedule growth
The reason behind every one of those numbers is the same. When the people who will build the project help shape its design, the expensive surprises get caught on paper instead of in the field. That is the structural weakness of awarding work to the lowest separate bidder: the design and the build never share a team, so the gaps between them become your cost and your delay.
How to evaluate a bid the right way
You do not have to accept the highest bid to avoid the trap of the lowest one. You have to compare the right things. Before you award a commercial project, work through this:
- Compare scope line by line, not just the bottom line. The cheapest total often hides the thinnest scope.
- Hunt for exclusions and vague allowances. Placeholder numbers are future change orders in disguise.
- Confirm the material specifications and the quality of the subcontractors actually doing the work.
- Weigh qualifications, references, and safety record alongside price, not after it.
- Ask directly how change orders are identified, priced, and approved.
A contractor who welcomes these questions is showing you how they will behave during construction. One who resists them is telling you something too.
One team, no surprises: the design-build alternative
Keller’s design-build process exists to close the gaps that low-bid projects fall into.
One team, one contract. A single point of contact means streamlined communication and one group responsible for the outcome, with nowhere for problems to hide between contracts.
Clear, honest cost proposals. Detailed, transparent pricing surfaces risks early, while they are still inexpensive to solve, so the budget you approve is the budget you build to.
Faster project delivery. Because design and construction planning overlap instead of running end to end, the schedule compresses and you open your doors sooner.
Collaborative planning and value engineering. Bringing every stakeholder to the table early is how real scope gaps get closed and how genuine cost-saving opportunities, the kind that do not compromise quality, actually get found.
The Keller difference: value that lasts
Choosing a construction partner is about more than the number on a proposal. It is about trust, a shared vision, and a real investment in your success. Because Keller is 100% employee-owned, every person on your project has a personal stake in how it turns out.
Your success is our success. We partner with the leaders, teams, and communities behind each building because the outcome matters to us. We listen closely, respond quickly, and advocate for your goals at every step.
Direct accountability. Pride of ownership runs through the work. Our employee-owners treat each project as their own, which shows up as quality, transparency, and responsiveness from start to finish.
Long-term partnerships. We do not disappear when the keys change hands. Many clients choose Keller again and again because the relationship is built around their ongoing success, not just a closed-out job. You can see that track record across our completed projects and in our clients’ own words on our testimonials page.
Spend smart, not just low
When it comes to building, the lowest bid is rarely the safest or most cost-effective path. A number that looks like a bargain at award can quietly become the most expensive line item on the project. The dependable way to protect a budget is to remove the surprises before construction starts, which is exactly what an integrated design-build team is built to do.
Choose a partner as invested in your success as you are. Whether you are planning an industrial or manufacturing facility, a healthcare space, or any other commercial building, we will give you an honest plan and a price you can trust. Start your project with Keller.
Frequently Asked Questions
Why is the lowest construction bid often the most expensive option?
A bid is only as complete as the scope behind it. Low bids frequently leave out work, use cheaper materials, or rely on optimistic assumptions, and those gaps come back during construction as change orders, delays, and repairs. Independent research on delivery methods shows that projects chosen on price alone tend to see more cost growth than projects where the builder and designer work as one team.
What are change orders, and why do low bids create them?
A change order is a mid-project change to the contract price or scope. Low bids create them because anything left out of the original number has to be added back later, often at a premium.
Is design-build cheaper than the traditional bid approach?
Design-build is consistently more cost-reliable. Industry research has found design-build projects average roughly 3.8% less cost growth than traditional design-bid-build projects, along with much faster delivery. Because design and construction are coordinated by one team, costly surprises get caught during design rather than after construction begins.
How do I compare construction bids fairly?
Compare scope, not just the total. Line up each proposal element by element, look for exclusions and vague allowances, confirm material and subcontractor quality, and weigh the contractor’s qualifications and references.
What questions should I ask before choosing a contractor?
Ask what is and is not included in the price, how change orders are identified and priced, which subcontractors will do the work, and what happens if the schedule slips. Ask for references on similar projects and ask how the designer and builder coordinate. The answers reveal how a contractor will treat your budget once the work is underway.
