Reisource Tech Blog

Using Feasibility Studies & Existing Conditions in BIM

Written by Christopher Allen | Mar 13, 2026 3:06:50 PM

 

Using Feasibility Studies & Existing Conditions in BIM

Big decisions in construction and design hinge on confidence. Owners want to know their investment is sound. Architects want to avoid surprises. Contractors want to build without hitting hidden obstacles. This is where feasibility studies and accurate documentation of existing conditions come in — and where Building Information Modeling (BIM) gives everyone a shared foundation.

Why Existing Conditions Matter

Every project starts with a question: what’s already there? Whether it’s a renovation, an addition, or a redevelopment, understanding the existing site and structures is essential. A misplaced column, hidden mechanical chase, or unrecorded ceiling height can derail budgets and timelines if discovered too late.

Feasibility Studies in Practice

Feasibility studies are used primarily to compare reference data with actual existing conditions. They provide quick, early evidence for whether adjustments need to be made — and allow project teams to test how those adjustments affect proposed construction. If only 2D plans and reflected ceiling plans (RCPs) are available, 2D deviation studies can already catch critical discrepancies. But when a reference 3D model is provided, the possibilities expand: levels, element heights, and other spatial discrepancies can be analyzed with far more precision.

Digital Tools for Broader Access

The power of feasibility studies grows when the insights are shared. Tools like NavVis Ivion allow stakeholders without BIM authoring software to view deviations directly on the web. This supplements the typical 2D PDF deliverables generated by aligning point clouds and verified as-builts against potentially erroneous reference data. Suddenly, decision-makers and field teams can see the mismatches themselves, without needing specialized training.

Preventing the Dreaded “We Didn’t Know That Was There”

One of the most common — and costly — setbacks comes from discovering unexpected site conditions. Accurate BIM models informed by feasibility studies help avoid these moments. Whether it’s locating underground utilities before excavation or identifying ceiling conflicts in adaptive reuse projects, a solid digital twin provides a reality check early on.

Conclusion

Feasibility studies and accurate existing condition models in BIM give projects a strong foundation. By comparing reference data to reality, validating assumptions, and sharing results with all stakeholders, they help owners, architects, and contractors move forward with confidence — before surprises can derail the plan.