Answer:
A Class 1a building, as defined under the National Construction Code (NCC), is a self-contained dwelling suitable for long-term residential use. It includes everything needed to live independently — bedrooms, bathroom, kitchen, and living areas — in a single dwelling.

Expandify homes are Class 1a certified, meaning:

• They are treated as permanent homes (not cabins or temporary buildings)
• They meet structural, energy, and safety standards
• They are eligible for occupancy certificates through private certifiers
• They are compliant with the same code as a new home built on-site

This classification is essential for legal occupancy, resale value, and council approvals.