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Ari Zilnik
Construction Join Head of Design

Construction Scenario Comparison

Construction Scenario Comparison

Join is project management for the people who build actual buildings. As Head of Design, I lead a small team and ship product across the platform.

Scenarios is a side-by-side comparison view for construction project decisions. A contractor doesn’t decide “which countertop” in isolation; they decide “which finish package for kitchens and bathrooms” against budget and schedule. Before Scenarios, Join asked users to evaluate one decision at a time, which didn’t match how owners actually weighed options. Real decisions are made on bundled packages — finishes, schedule, scope — against each other.

Decisions as packages

A contractor builds two options — say, premium finishes on a compressed schedule against a value-engineered version that stretches the timeline. Join recalculates every linked line item underneath, and the owner reviews two packages instead of forty individual decisions.

Join Scenarios overview listing two alternative versions of a construction project
Cost propagation across linked line items.

A flat comparison, no ranking

The hardest design decision was about hierarchy. Owners on multi-million-dollar projects didn’t want to be steered toward a “best” option; they wanted to weigh trade-offs themselves. We made the comparison deliberately flat — every dimension visible, no option marked as preferred.

Scenarios comparison view showing two packaged project options side-by-side with their cost and schedule trade-offs
Interactive prototype of Scenarios comparing two bundled options with live trade-off calculations
Two bundled options compared side-by-side with cost and schedule trade-offs visible at a glance.

Progressive disclosure

The default view is intentionally lean — users click into specific dimensions when they need detail. The owner-facing read stays calm for sign-off meetings while the contractor side keeps the richer working data for internal use.

Scenarios decision workflow showing a contractor preparing options for an owner sign-off meeting
Collaboration around scenario sign-off.

Results

The scenario-decision cycle dropped 50%, measured from creation through owner sign-off. Architects accounted for 20% of Scenarios users — a segment Join hadn’t been designing for. The comparison view matched how they presented design options to their own clients, and they found the feature on their own.

“This is like a happy meal for decision making. Everything you need, all in one place.”

“We used Scenarios on a $150M job and it cut our decision timeline in half.”

Credits

Design: Ari Zilnik

Product: Steve Matthews

Engineering: Dan Anthony

Engineering: Mark Deutsch

Shipped at Join, 2024.

Impact

50%

Reduction in scenario-decision cycle time

20%

Share of users who are architects, a new audience for Join