Every construction and renovation project reaches a point where someone needs to work from a drawing. Whether that’s an architect detailing a renovation, a contractor coordinating trades, or a facility manager planning future work — the quality of that drawing determines how smoothly everything that follows goes.

For project teams throughout Central Illinois, The Wassi Group produces accurate, build-ready CAD drawings and coordinated 3D models. As a result, your team gets something reliable to work from — clear documentation, correct dimensions, and files delivered in the formats you actually use.

Why accurate CAD documentation matters

Design and construction decisions start with drawings. When those drawings are inaccurate — dimensions approximated, systems missing, conditions outdated — the errors don’t stay on paper. Instead, they follow the project into the field, where fixing them costs real time and money.

At TWG, our CAD drafting work starts from verified existing conditions. Where laser scan data is part of the scope, we build drawings and models directly from that data — so what’s on the page reflects what’s actually in the building. Where scan data isn’t available, we apply the same standard of care to produce documentation your team can build from with confidence.

What we deliver

• Existing conditions drawings — accurate 2D floor plans, elevations, and sections reflecting the building as it currently stands
• Revit models — coordinated BIM models built from verified existing conditions for renovation, design, and construction planning
• Mechanical drawings — detailed mechanical models and fabrication-ready drawings for components and assemblies of any scale or complexity
• Industrial facility documentation — facility layouts, process diagrams, and documentation that support planning, coordination, and long-term facility management
• 3D renderings and visualization — photorealistic models that communicate design intent clearly before construction begins

Who we work with in Central Illinois

• Architects and designers who need accurate existing conditions documentation as the foundation for renovation and new design work
• General contractors coordinating trades and sequencing work from drawings that reflect verified field conditions
• Mechanical and industrial engineers who require detailed, fabrication-ready documentation for components, systems, and facility modifications
• Facility managers maintaining commercial buildings, healthcare facilities, and industrial plants who need reliable floor plans and building records
• Owners and developers who want clear visual communication of design intent before committing to construction

Serving Central Illinois and the surrounding region

TWG is based in Morton, IL, and our team has worked with design and construction professionals throughout Central Illinois for nearly 30 years. We regularly serve project teams across the region — including Peoria, Bloomington-Normal, Springfield, Champaign, and surrounding communities. In addition, we handle broader project locations throughout Illinois and beyond.

Our process

• Project review — First, we start by understanding your project goals, existing documentation, and the formats your team needs deliverables in
• Existing conditions verification — Next, where laser scan data is available, we build drawings directly from that data. Where it isn’t, we work from the best available documentation and field verification
• Drafting and modeling — We then produce CAD drawings and Revit models to the level of detail your project requires, with accuracy as the non-negotiable standard throughout
• Delivery — Finally, you receive clean, organized files in the formats your team uses — with clear communication from start to finish

Ready to get started?

We work with architects, contractors, and project teams throughout Central Illinois and beyond — and we genuinely love what we do. Whether your project calls for CAD drafting, 3D laser scanning, or construction prints, our goal is always the same: give your team accurate, reliable documentation you can build from.

Contact us to talk through your project — no pressure, just a straightforward conversation about what you need.