If you are shopping for a backyard shed in Ontario and trying to keep the cost down, you have three real options: build it yourself, buy a kit and assemble it, or buy a professionally built shed. Each one has a different upfront cost, a different time commitment, and a different outcome.
This guide breaks down what each option actually costs and where the hidden expenses tend to show up, so you can make the right call for your budget and your backyard.
Every backyard shed in Ontario comes from one of three places: you build it from scratch, you assemble a prefabricated kit, or you buy a finished structure that gets installed by a professional crew. The right answer depends on how much time you have, how confident you are with tools, and how long you want the shed to last.
A DIY shed built from lumber and basic materials can be done for $2,000 to $5,000 in materials if you are buying new wood, roofing, siding, and hardware. That number drops if you have materials on hand or access to reclaimed lumber, and rises quickly if you need to buy or rent tools.
The real cost of a DIY shed is time. A first-time builder working alone should expect to spend several weekends on a basic 10x10 structure. That includes framing, roofing, siding, a door, and finishing the floor. If anything goes wrong -- and something usually does -- add more time.
Start here and do not rush it. In Ontario, frost heave is real -- the ground moves in winter, and a shed on an inadequate base will shift, rack, and cause door and wall problems within a few years. Concrete deck blocks or helical screw piles are reliable options for smaller structures. Make sure your base is level before anything goes on top of it.
Use 2x4 construction lumber for walls and roof framing, spaced at 16 or 24 inches on centre. 16 inch spacing gives you a stronger wall and makes it easier to insulate later if you change your mind. Use pressure-treated lumber for anything that contacts the ground or sits close to it.
A basic gable roof is the most practical choice for Ontario -- it sheds snow and rain well and is straightforward to frame. Use proper roofing felt under your shingles and do not skip the drip edge. Ice and water shield along the eaves is worth adding in Ontario's climate.
LP SmartSide and T1-11 plywood are the two most common budget siding options for DIY sheds. LP SmartSide holds up better to moisture over time. Whatever you choose, prime all cut edges before installation -- unprotected cut edges are where rot starts.
A sliding barn door is easier to build and hang than a hinged door and works well on a shed. If you go hinged, use heavy duty exterior hinges and make sure your frame is square before you hang it -- a door hung in an out-of-square frame will bind within a season.
Before you build anything, check your municipality's rules. In Ontario, structures under 160 square feet generally do not need a building permit, but setback rules from your property lines still apply regardless of size. London requires at least 2 feet from side and rear lot lines. Kitchener, Guelph, and Cambridge have similar but not identical rules. A quick call to your local building department before you pour a foundation saves a lot of trouble later.
Prefabricated shed kits sold at home improvement stores typically range from $1,500 to $6,000 depending on size and material. You get panels, hardware, and instructions. Assembly is on you.
The appeal is a lower upfront cost and a faster build than starting from scratch. The trade-off is quality. Most kit sheds use thin wall panels, basic hardware, and roofing that does not hold up well to Ontario winters. After a few freeze-thaw cycles, doors start to stick, panels warp, and floors soften.
Kit sheds are also not designed to be insulated, wired, or finished for anything beyond basic storage. If you think you might want to use the space for more than that in the future, a kit shed is not the right foundation.
Good for: basic seasonal storage where appearance and longevity are not the priority.
A professionally built shed from a company like Backyard Escape Studios starts around $8,000 to $15,000 installed, depending on size, materials, and options. That price includes delivery, installation, and a finished structure that is ready to use the same day.
The difference in quality is significant. A professionally built shed uses proper framing lumber, quality siding, a real roof, and hardware that is designed to last. It also sits on a proper foundation appropriate for Ontario's climate, with anchoring that keeps it in place through winter.
For homeowners who want to insulate the shed, add electrical, or use it for more than storage, a professional build is also the only option that makes that realistic without a full rebuild.
Good for: homeowners who want a shed that lasts, looks good, and can grow with their needs.
The cheapest shed to buy is rarely the cheapest shed to own. A $2,500 kit shed that needs to be replaced in five years costs more over a decade than a $10,000 professionally built structure that lasts twenty.
The factors that drive long-term cost are materials, foundation, and construction quality. Pressure-treated framing, quality siding, proper roofing, and a level foundation on appropriate footings are not optional if you want a shed that survives Ontario winters without ongoing maintenance and repairs.
A shed that warps, leaks, or settles unevenly also has no resale value. A well-built shed from a reputable builder holds its value and can even be relocated if you move.
Here are realistic ranges for each option in Ontario in 2025:
DIY build: $2,000 to $5,000 in materials, plus your time and any tool costs
Kit shed: $1,500 to $6,000 for the kit, plus foundation costs and your time to assemble
Professionally built shed: $8,000 to $15,000 installed, depending on size and specification
Professionally built studio (insulated, wired, finished): $20,000 to $40,000 depending on size and use
If turnaround time matters, a professionally built prefab shed is the clear winner. BES sheds are fabricated in our London, Ontario shop and installed on site in a single day. You place your order, we confirm the details, and your shed arrives ready to use.
There is no waiting on lumber delivery, no weekends lost to assembly, and no risk of a project that drags on through fall and into winter.
If you are in southwestern Ontario and want a shed that goes in fast and lasts, get a free estimate from Backyard Escape Studios. We build across London, Kitchener, Guelph, Cambridge, Brantford, Woodstock, and surrounding communities.
Today is the day to start building the structure of your dreams. Share your design ideas with us so we can get started on bringing your shed to life.
