I am hoping that someone else from St. Catharines /Niagara Region in Ontario can help me. I am trying to find out what the regulations for a home-based bakery are, and I am having no luck on the city's website.
Call your Board of Health first. They will have rules you have to follow for set up then contact city /township you are in for tax and legal set up. Hardest part is following BOH. And what they demand is what you need to follow. ( Never mess with Board of Health rules... even when doing fundraising I stuck by the rules and had many parents ridicule me... however one day they did appear to inspect...so glad I choose to do the right thing..)
Don't forget to check with you City Office as well. You should first ask if you are even allowed to operate a home based business in you neighbourhood. If they say yes then you must follow the rules from you local Health Dept.
Running a home based business might up your City Taxes so be aware of that. You might get reassessed as commercial. Which is more expensive than residential.