Manufactured vs Modular Homes

Manufactured Homes

CSA Z240 MH is the CSA National Standard for Manufactured (Mobile) Home Construction. CSA Z240 MH is in effect a building code for manufactured (mobile) homes.

Alberta does not accept homes built to the CSA Z240 MH Standard (although there are some municipalities where bylaws have not been updated to reflect this information so some homes will have both labels); therefore, any home constructed to this Standard cannot be sited in Alberta. Many municipalities in other provinces might limit where a CSA Z240 MH Standard home can be sited. Consumers should check with their local municipal zoning bylaw.

Building Inspectors from the jurisdiction where the homes are being located are responsible for the building inspection process. Homes built in a manufacturing facility which are certified to produce homes to the CSA A277 or CSA Z240 MH Standard are certified by one of the three inspection agencies accredited to certify to the applicable CSA Standard.

The Certification Organizations; CSA, Intertek and Quality Auditing Institute (QAI) are accredited to perform compliance inspections within the manufacturing facility.

To ensure the home has been built to the Regional or Provincial Building Code (CSA A277 or CSA Z240 MH Standard), the building inspector looks at the Label inside the door of the electrical panel to determine code compliance. If the Label is issued by one of the three noted accredited inspection agencies and it indicates CSA A277 Modular compliance or CSA Z240 MH Standard, it is in compliance with the regional or Provincial Government Building Code as per that Provinces’ requirement.

Modular Homes

The CSA A277 Standard is a Certification Standard (not a building code). This Standard is used to certify the residential building is in compliance to the building code it is required to comply within the jurisdiction where the home / building will be sited. CSA A277 can be used to certify compliance with the Japanese Building Code, the UK Building Code, the National Building Code of Canada, the Ontario and the Alberta Building Codes, etc.

In the case of Alberta, all homes must meet the Alberta Building Code and therefore, the A277 Standard. Whenever a home is constructed in a manufacturing facility for placement in Alberta, it must be confirmed for compliance to the Alberta Building Code by labels in each home Certifying compliance under the CSA A277 Standard and Alberta Municipal Affairs.