Which home type is assembled on-site from panels that include foam insulation sandwiched between sheets of plywood and require no framing members?

• A. Modular Home
• B. Precast Concrete Home
• C. Site-built Home
• D. Panelized Home

Answer: (D)

Panelized homes use large factory-made wall and roof panels that have rigid foam insulation sandwiched between structural skins such as plywood or OSB. When these panels are brought to the site, they’re assembled together, providing both the structure and insulation in one unit, so there’s no separate framing members added on site. This construction method leads to fast assembly and high energy efficiency because the insulation is integral to the panels.

This differentiates it from modular homes, which are built in factory modules that still rely on traditional framing inside and are later joined on site, and from site-built construction, which is assembled entirely on site with conventional framing. Precast concrete homes use concrete panels and do not feature foam insulation sandwiched between plywood sheets.