Modular 101
Introduction
Modular construction is changing how buildings are delivered, but the terminology and process can feel unfamiliar to newcomers. Our Modular 101 / Glossary is designed to provide clear, straightforward explanations of key concepts — making it easier for developers, lenders, and municipal stakeholders to understand how modular works and why it matters.
Core Concepts
Volumetric Modular Construction
A method of building where fully finished “modules” (complete with walls, floors, ceilings, plumbing, and electrical) are manufactured in a factory and then transported to the site for assembly into a complete building.
DfMA (Design for Manufacturing & Assembly)
A design approach where buildings are created with factory production in mind, ensuring that modules can be efficiently manufactured, transported, and assembled.
Parallel Workflows
Unlike traditional construction, modular allows site preparation and factory manufacturing to occur at the same time, reducing project timelines by 30–40%.
Module
The basic building block of modular construction. A self-contained unit (e.g., apartment, hotel room, or office segment) manufactured off-site and assembled on-site.
Set & Stitch
The process of craning modules into place (“set”) and connecting them structurally, mechanically, and architecturally (“stitch”) to create a unified building.
QA/QC (Quality Assurance / Quality Control)
Systematic checks and inspections performed during factory production to ensure consistency, compliance, and safety in every module.
ESG (Environmental, Social, Governance)
A framework evaluating sustainability and social responsibility. Modular construction supports ESG goals by reducing waste, cutting emissions, and creating safer jobs.
Close-Out & Delivery
The final project stage where modules are stitched, systems tested, inspections completed, and the building is handed over for occupancy.
Call to Action
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