08/20/2026
Q: What is modular building, MMC, prefab and panelized construction? Are they the same?
A: Not exactly. These terms are often used interchangeably, but they describe different approaches to off-site and modern construction.
👉 Modern Methods of Construction (MMC) is the broadest term. Rather than referring to one specific building method, MMC encompasses a range of approaches that use manufacturing, technology, automation, digital tools, and improved processes to make construction more efficient, predictable, and higher performing.
👉 Prefabrication, or “prefab,” is a general term for building components that are manufactured or assembled away from their final location before being transported to the construction site. Prefab can therefore include volumetric modular buildings, panelized systems (like SEED panels), individual prefabricated components, and other factory-made assemblies.
👉 SEED is a prefabricated, panelized (2D) building system. Panelized construction does not describe a single level of prefabrication or performance. An open wall panel may simply arrive as a framed wall that still requires insulation, air and weather barriers, windows, and other enclosure components to be installed on site. A more advanced panelized system can integrate many of these functions before the panel leaves the factory.
In short: MMC is the broad category, prefab describes the off-site manufacturing approach, while panelized describes the form of the building system.
Have questions about prefabricated, panelized construction or about SEED panels? Learn more on the Tooketree website through the link in our bio. 👆
🖥️ https://www.tooketree.com/tooketre-faqs
