The frost generated by Canadian winters wreak havoc on structures through their foundations. According to code conventional foundations and footings must rest below the reach of frost on undisturbed soil (in most provinces, this is safely considered to be 4 ft. below ground level or grade), bear directly on bedrock, or be frost-protected. A shallow foundation may be possible in your area in an outbuilding if you can get an engineer to design and stamp plans for insulating the area directly beside your shallow foundation wall so that frost will not form beneath the footing area and cause damage. A slab-on-grade foundation for an outbuilding is another option that will need to be designed by an engineer so that the concrete slab will structurally bear the weight of the shop structure you build above it.
There are benefits to either approach. Sharing a common wall with your house can require some careful soundproofing but can reduce heat loss and exterior finishing costs like siding. A shop located in an addition is more likely to be allowed to have living space or storage space above it, and it may be easier to make use of the existing plumbing and electrical and heating systems of your home to service your shop space. Another advantage of an addition is not having to run to an outbuilding in minus-30-degree weather or a summer downpour.
If you choose to hire a draftsperson or architect, they may charge you based on the square footage of the area you are proposing, by an hourly rate for their time or as a percentage of the cost of the structure. Costs of building permits will be a percentage of the estimated cost of the structure you are proposing (e.g., $15 permit fee per $1000 or 1.5 percent), or a cost-per-square foot depending on your municipality (e.g., $1.20 per square foot). Design work and permits will both differ depending on the part of the country in which you will be building, so ask the questions as you move ahead. One of the costs that is often overlooked in planning is the increase in annual property tax you will pay once your improved property has been reassessed.
The on the go mode is ideal for when I’m just driving all day and need to pull over and get some rest, be it in a parking lot, a residential cul-de-suc, or wherever. I usually toss a couple of items in the cab of my truck and crawl into the “coffin” sleeping arrangement for a quick night’s rest, but I can also crawl in without placing anything in the cab.