Step By Step Guide to Applying Choosing By Advantages

Collaborative Decision-Making in Construction: How Choosing by Advantages Actually Works

Most construction decisions are made through a process that feels systematic but is not. A team generates a list of options. Someone creates a pros-and-cons analysis. The pros and cons are discussed, sometimes weighted informally, and a decision emerges often based on which option the most senior person in the room was already leaning toward, with the analysis providing post-hoc justification rather than genuine analytical support.

Choosing by Advantages CBA is a collaborative and transparent decision-making system developed by Jim Suhr that replaces that informal process with a structured, documented approach that anchors decisions to relevant facts, avoids the double-counting problem that plagues pros-and-cons analysis, and produces outcomes that every participant can understand and defend. It works for decisions ranging from simple to very complex, and its most commonly used form the Tabular Method is appropriate for any decision involving two or more mutually exclusive alternatives of unequal cost.

The Core Insight: Advantages, Not Pros and Cons

The foundation of CBA is a conceptual shift that sounds simple and has significant practical consequences. In traditional pros-and-cons analysis, a difference between alternatives gets counted twice once as a pro for one option and once as a con for the other. This double-counting distorts the analysis, because the same one-foot difference in height between two basketball players shows up as a positive for the taller player and a negative for the shorter player, artificially inflating the apparent size of the difference.

CBA eliminates this problem by counting only advantages positive differences from the perspective of the least-preferred attribute in each category. If John is six feet tall and Peter is five feet tall, CBA records one foot as an advantage of John. Peter’s shorter height is not a separate disadvantage it is simply the baseline from which John’s advantage is measured. This approach keeps the analysis focused on what the options actually offer rather than on a cumulative impression that double-counts every difference.

The Seven Steps of the Tabular Method

The CBA Tabular Method walks through seven steps that any team can follow for any decision, from structural system selection to trade partner choice to equipment procurement. The first step is identifying the alternatives. The team identifies the options that are likely to yield important advantages over each other not an exhaustive list of every possibility, but the realistic candidates that deserve serious evaluation.

The second step is defining the factors. Factors are the dimensions along which the alternatives will be compared the attributes that are relevant to this specific decision. For a structural system selection, factors might include construction timeline, cost per square foot, coordination complexity, and lead time. For a trade partner selection, they might include prior project experience, safety record, workforce capacity, and technology adoption. The goal is to identify the factors that will reveal the most significant differences between the alternatives. The third step is deciding on criteria for judgment. For each factor, the team establishes the rule that determines which direction is preferable. For cost, lower is better. For fuel economy, higher is better. For reliability, more is better. This step establishes the evaluative logic that will be used consistently across all alternatives for each factor.

The fourth step is summarizing the attributes. The team researches and documents the actual attribute of each alternative for each factor the specific numbers, ratings, or descriptions that characterize each option on each dimension. This is the fact-gathering step, and the quality of the subsequent analysis depends on the accuracy of the information gathered here. The fifth step is identifying advantages. For each factor, the team identifies the least-preferred attribute the attribute that, based on the criteria established in step three, is the weakest of the options. That attribute becomes the baseline. Every other alternative’s attribute is then expressed as an advantage relative to that baseline. An option with a fuel economy of 40 miles per gallon, compared to a baseline of 18, has an advantage of 22 mpg. An option at the baseline has no advantage on that factor it is simply the reference point.

The sixth step is deciding the importance of advantages. The team assigns numerical weights Importance of Advantages scores, or IofAs to each advantage across all alternatives. The process begins by identifying the paramount advantage: the single most important advantage across all factors and all alternatives. That paramount advantage receives 100 points. Every other advantage is then weighted relative to the paramount advantage. An advantage that is roughly half as important as the paramount receives 50 points. An advantage that is moderately significant receives 30. The IofAs for each alternative are summed to produce a total importance score.

The seventh step is evaluating cost data against the IofAs. The total importance score for each alternative is compared against its cost. The alternative with the highest IofAs and the lowest cost has the strongest case. When a higher-IofA option also costs more, the team can see clearly whether the advantage premium is worth the cost premium because the advantages and the cost are presented separately rather than collapsed into a single score.

Why the Separation of Advantages and Cost Matters

In most decision-making systems, cost is treated as one factor among many, weighted against quality factors in a single composite score. This produces decisions that are difficult to explain and easy to contest the composite score obscures the trade-offs between the dimensions it combines.

CBA keeps cost separate from advantages. The importance scores capture the team’s collective judgment about what matters most in terms of what each option offers. The cost stands on its own as the investment required to access those advantages. When the team reviews the final table importance scores on one axis, cost on the other the trade-off is visible and explicit: this option’s advantages are worth X points, and accessing them costs Y dollars. Is Y a reasonable price for X? That question can be answered by the team with full information, rather than buried inside a weighted composite that no single participant fully understands.

Here are the conditions that make CBA most effective in a construction context:

• The team agrees on the factors before attributes are gathered, so the analysis is not built around the known strengths of a preferred option
• The least-preferred attribute is identified collaboratively for each factor, not assumed by one party
• The paramount advantage is identified by consensus, not assigned by the most senior person in the room
• Cost is evaluated after the importance scores are complete, not used to anchor the weighting
• The completed table is shared with all participants, including the owner, so the decision is fully transparent and documentable

Applications in Construction

The CBA Tabular Method has been applied across the full range of construction decisions. Structural system selection comparing cast-in-place concrete, structural steel, and mass timber across factors of schedule, cost, coordination complexity, and sustainability. Trade partner selection comparing three firms across factors of workforce capacity, safety record, Lean experience, and prior project performance. Architect-of-record selection in design-build delivery evaluating design firms on factors the team defined collaboratively and presenting the result to an owner who accepted the recommendation because the process was transparent and the reasoning was clear.

In each of these applications, CBA produced outcomes that were more defensible than alternatives selected through informal discussion, more collaborative because the criteria and weightings were developed with the full team, and more durable because the documented rationale remained available for anyone who questioned the decision later.

Several studies have confirmed CBA’s effectiveness in supporting both individual and group decision-making, improving design and construction processes, and helping teams avoid the late changes and negative iterations that poor decision-making generates.

At Elevate Construction, CBA is one of the tools through which the conditions of satisfaction framework is given operational precision when a team must choose between structural options, trade partners, or design approaches, the structure of CBA ensures that the choice reflects the values the owner and team have already defined rather than the intuition of the person with the most authority in the room. If your project needs superintendent coaching, project support, or leadership development, Elevate Construction can help your field teams stabilize, schedule, and flow. Anchor decisions to relevant facts. Count advantages once. Evaluate cost separately. Document everything. That is how CBA produces decisions a team can defend and build from.

On we go.

Frequently Asked Questions

What is the core difference between Choosing by Advantages and a pros-and-cons analysis?

CBA counts only advantages positive differences relative to the least-preferred attribute while pros-and-cons analysis counts each difference twice, once as a positive for one option and once as a negative for another. This double-counting inflates the apparent size of differences and distorts the analysis. CBA eliminates this problem by using a single baseline and counting each difference once.

What is the paramount advantage and why does it anchor the importance scoring?

The paramount advantage is the single most important advantage across all factors and all alternatives the difference that matters most to the decision-makers in this specific context. It receives 100 points and serves as the reference point against which all other advantages are weighted. Starting from the most important difference and working down ensures that the scoring reflects genuine priorities rather than arbitrary assignments.

Why are cost and advantages evaluated separately in CBA?

Because collapsing them into a single composite score buries the trade-off between what an option offers and what it costs. Keeping them separate makes the trade-off explicit and visible: these advantages are worth this importance score, and accessing them requires this investment. The team can evaluate whether the investment is worth the advantages with full information.

Can CBA be updated if new information becomes available?

Yes. The tabular structure makes the analysis easy to revise when new factors, new attributes, or new alternatives emerge. This updatability is one of CBA’s practical advantages over methods that produce a single score or ranking that is difficult to trace back to the underlying factors.

What types of construction decisions is CBA most appropriate for?

Any decision involving two or more mutually exclusive alternatives of unequal cost structural system selection, trade partner selection, equipment procurement, design option selection, architect or contractor selection. It is most valuable for decisions where transparency and group buy-in are important, and where the decision needs to be documentable and defensible after the fact.