Decisio is CIMA+’s next generation decision-support service that enables smarter, faster and lower-carbon building-design decisions from the earliest project stages. It provides a single point of accountability from concept to completion, helping owners, developers, architects and engineers manage performance requirements that increasingly drive early design decisions and project delivery.

A significant challenge for clients is the timing gap: early design commitments based on inferior or incomplete data can lead to late corrections, redesign, value engineering under pressure, construction coordination conflicts, and cost and schedule uncertainty. Decisio closes this gap using detailed energy models that reflect real building geometry and system configurations, then evaluating thousands of practical combinations across architecture, envelope, mechanical and lighting within weeks. It combines energy modelling, operational and embodied carbon assessment, and cost analysis in one workflow, so trade-offs are visible and defensible.

Scenario comparisons and a sensitivity analysis show which choices help achieve targets and which do not, enabling teams to focus on the options that matter while balancing performance, cost and constructability. Decisio also supports future-ready decisions such as electrification pathways, low-carbon materials selection, and resilience checks aligned with evolving codes and owner commitments. Shared visuals and clear reporting keep owners, architects, engineers and contractors aligned and support coordination and approvals with a transparent record of assumptions and decisions.

The result is fewer late changes and change orders, more predictable costs and scheduling, and fast feedback that protects design intent and momentum.

“Decisio replaces late surprises with early clarity by showing the cost and performance impact of real design choices.” – Ali Nazari, Executive Director, Buildings Engineering, CIMA+

Decisio’s approach is centered on enabling confident, early-stage decision-making through a structured, collaborative and data-driven process. It is delivered as a service that integrates technical expertise with an advanced decision-support platform, ensuring alignment, clarity and accountability from concept to completion.

1. Align: CIMA+ facilitates a kickoff meeting to confirm goals, the timeline, performance targets, constraints and the options to be modelled.

2. Empower: Within weeks, Decisio evaluates thousands of combinations across architecture, envelope, mechanical systems and lighting. A sensitivity analysis shows how each choice influences project targets.

3. Focus: The team narrows down options to the most effective solutions that balance performance, cost and constructability, with input from key stakeholders.

4. Decide: CIMA+ provides expert facilitation and clear, actionable reporting for coordination, decision-making and final approvals, with assumptions and risks documented.

The result is a streamlined path to high-performance, financially sound design outcomes delivered earlier in the project lifecycle.

Decisio has helped teams test thousands of realistic options early and align on targets sooner. By linking energy, carbon and cost in consistent scenarios, teams reduce redesign, support earlier approvals, and improve confidence in budget and schedule decisions.

“Decisio is the future of energy modelling, using sensitivity results to clarify which tweaks achieve energy output goals and making it far easier to narrow down selections.” – Cody Hannah, client (Safri Management).