The main differences between Modular and Manufactured aka mobile homes are construction standards, materials and foundations.
Modular homes are built with a wood floor system and are designed to go on a concrete foundation, either a full basement or crawlspace.
Manufactured aka Mobile homes are built on a steel frame and are typically set on concrete blocking or cement or metal pylons.
Modular homes are built to Canadian Standards Association A-277 (Canadian National Building Code). IN addition they are built to meet BC Building Code. These Standard Specifications include engineered floor trusses, 2 x 6 exterior walls, 8′ & 9′ ceilings and primed and painted drywall.
Manufactured aka Mobile homes are manufactured to Canadian Standards Association Z-240. Standard Specifications include 2 x 8 floor joists on a steel frame, 2 x 6 exterior walls, 7 ½’ side walls, vaulted ceilings, and vipsum drywall covered interior walls.