I practice in British Columbia. I graduated from the University of British Columbia as a civil engineer in the structural discipline. I qualified as an EIT but EIT doesn't need to be registered. So I am not registered.
I design residential houses but I don't get many jobs. My company is Discotech Architectural Project Management. I hire architectural firm and engineering firms to take care of my projects and they are design built and turnkeys projects. All I have to do is to have coffee with the owner and chief architect. As I understand, you don't need to be a structural engineer to design houses under Part Nine of the Canadian National Building Code, but structural stamps are required when the city requires them.
If you are not a civil or structural engineer, you can only call yourself a civil designer or structural designer, the person responsible for the design.
If you are a civil engineer, you can design any building up to 10 stories high.
For over 10 stories high, you need a structural engineer.
The Building Authority of Canada says the following:
STRUCTURAL ENGINEERS may design any building of any type.
CIVIL ENGINEERS may design any building of any type EXCEPT public schools and hospitals.
ARCHITECTS may design any building of any type EXCEPT the structural portion of a hospital.
UNLICENSED INDIVIDUALS may design only the following types of buildings:
Single-family dwellings of not more than two stories and basement in height.
Multiple dwellings containing not more than four dwelling units of woodframe construction of not more than two stories and basement in height and no more than four
dwelling units per lot.
Garages or other structures appurtenant to the dwellings described above of woodframe construction not more than two stories and basement in height.
NOTE: If any portion of the structures described above does not meet the conventional woodframe requirements described in Title 24 of the California Code of
Regulations or in the building codes of the local jurisdiction, then the building official having jurisdiction shall require the plans, calculations, and
specifications for that portion of the structure to be prepared and signed and sealed by a licensed engineer or a licensed architect.
Agricultural and ranch buildings of wood frame construction, unless the building official having jurisdiction determines that an undue risk to the public health, safety,
or welfare is involved.
Store fronts, interior alterations or additions, fixtures, cabinetwork, furniture, or other appliances or equipment, including any work necessary to install these items, or
any alterations or additions to any building necessary to install these items, as long as the alterations do not affect the structural safety of the building."
disclaimer: all calculations and comments must be checked by senior engineers before they are taken to be acceptable.