Why the lowest bid is almost never the cheapest commercial job

We see this every quarter. An owner runs a competitive bid on a commercial project. Three reputable Borderplex contractors come in within 4 percent of each other. A fourth contractor, often new to the owner's network, comes in 18 to 22 percent below the others. The owner gets pressured by their board or their lender to take the low bid.

We watch the project for six months. The low bid catches up to the other three numbers by month three. By substantial completion, the low bid has gone meaningfully past the others, the schedule is two months late, and the owner is in litigation with the contractor over change order disputes.

This is not a one-off pattern. This is the modal outcome of selecting the lowest commercial bid in our market. Here is the math behind why.

How low bids stay low

A 20-percent-low bid is not a 20-percent-cheaper contractor. The math does not work. Material costs are the same for everyone. Subcontractor labor in El Paso is roughly the same for everyone. Bonding and insurance are the same. The cost structure of any qualified commercial GC in the Borderplex is within a few percent of the others.

A 20-percent-low bid is a bid that has excluded 20 percent of the scope. The exclusion is sometimes explicit ("excludes off-site utility extensions") and sometimes implicit (a flooring allowance set at half the realistic number, or a roof scope priced for a different roof type than the spec calls for).

The excluded scope does not disappear. It shows up later as change orders. The owner pays for it in addition to the original contract price, plus the contractor's markup on each change, plus the schedule cost of waiting on the change order paperwork.

A specific example

Last year, an El Paso retail owner ran a competitive bid on a 12,000 square foot tenant improvement. Three contractors came in at $1.85, $1.91, and $1.97 million. A fourth came in at $1.52 million.

The owner took the $1.52 million bid. We were one of the higher bidders, and we did not get the work.

We watched. By month two, the contractor had filed change orders totaling $290,000 for "scope clarifications" that were present in the construction documents. The owner pushed back. The contractor stopped work. Litigation began in month four. The owner ultimately settled with the original contractor, hired a different GC to finish, and closed the project at $2.21 million.

The owner paid $360,000 more than they would have paid the highest of the three original bidders, in addition to a six-month delay on the tenant rent commencement date. The low bid did not save money. It cost real money, in a measurable, traceable way.

Why this happens

The honest answer is that most commercial owners do not compare bids on scope. They compare on price.

Bid comparison should be a structured walk through each line item in the proposals: this contractor priced X scope at Y, that contractor priced X scope at Z. When the numbers diverge, the question is "why?" Usually the answer is "one of them did not include scope the other one did."

Owners who do this comparison rarely take the low bid. Owners who skip the comparison and look only at the cover page often do.

What separates qualified from unqualified bidders

The fastest way to spot a low bid that will turn into a change-order disaster is to look at five things:

1. Subcontractor list. The bid should name the subs being carried. If the proposal says "TBD" or "to be named at award," the contractor has not actually priced the work. They have estimated it.

2. Schedule logic. A real schedule has critical path. A wish-schedule has a duration.

3. Allowance levels. Allowances should match the selection tier the spec describes. Half the realistic number means the change order is already drafted.

4. References on comparable work. Within the last 24 months, in the same building type, in the same market. "Did a project just like this in 2018 in Houston" is not a comparable.

5. Pay application format. A contractor who proposes to use AIA G702/G703 with a structured schedule of values is signaling they have done this before and intend to be transparent. A contractor who says "we will work out the pay app format" is not.

What owners should do

When you receive bids on a commercial project, run a structured scope comparison before you look at totals. Layer the proposals side by side. Find the gaps. Ask the low bidder where each gap was priced. If the answer is "we did not price that," you have your answer.

If a contractor comes in 20 percent low after that comparison, they are either much more efficient than the others (rare and worth understanding) or they are setting up a change-order recoupment strategy (common and predictable).

Send us your bid set and we will tell you honestly which is which, whether you award us the work or not.