Expert What Size Carport Can I Build Without A Permit : Find Professional Training Courses. As the owner has contracted a licensed building practitioner to undertake. A class 10a building (shed, garage, carport, veranda or patio) can only be constructed without a building permit if it has a floor area under 10m2 and is no more than 3m high (or no more than.

A class 10a building (shed, garage, carport, veranda or patio) can only be constructed without a building permit if it has a floor area under 10m2 and is no more than 3m high (or no more than. As the owner has contracted a licensed building practitioner to undertake. However, this is not the only rule to keep in.