Re: Anyone run a buisness from their garage?
Better check w/your local government. Home-based businesses often do not allow anyone besides the resident to work there, and are restricted to business use, not retail walk-in sales, warehouse, repair, storage, or other uses, including customer traffic. The zoning department and clerk's office often issues business permits, zoning permits, and what is now called in Florida, a "business tax receipt." The business license or business permit name was changed statewide because a legislator had passed a regulation because when he/she was told they needed a business license, they replied, "why, this is nothing more-than a business tax!" And so it was passed.
By all means, get insurance, form a corporation or 'sole proprietor.' Limit your liability. Say you repair a plastic vessel holding hot water, it breaks, and the person using it gets 2nd/3rd degree burns. You need protection.
Do a search of the area to see if anyone else is doing what you want to do, you could pretend to be a customer to see what they charge, because if it's not worth it, the best time investment may be that this business plan isn't going to be worth your time and money to operate.
Home-based businesses are also limited as to how-much space in the dwelling they can use. There are write-offs for taxes, but don't expect to be able to write-off your mortgage or utilities, usually it's just a small %. I used to do the inspections for home-based businesses in the county where I was employed, so I am very familiar with the requirements and inspection procedures.