We use cookies to keep you signed in and to see what's working and what breaks. No advertising cookies, nothing sold. Details in our Cookie Policy.
Straight answers
The questions people ask most about starting and running a concrete flatwork business in Ontario. Answered straight, with links to the official sources.
Volume and reliability: driveways and garage pads for builders are repeatable, priced per square foot, and won by being the crew that shows up and pours when the builder needs it. The margin killers are weather days, re-dos from rushed finishing, and under-pricing the base/subgrade prep (most flatwork failures are base failures, not finish failures). Tight scheduling around ready-mix deliveries and a couple of steady builder relationships are the engine.
Early and weather-ruled. Pours start at dawn to beat the heat and give the day to finish, and you work to the concrete's clock — a hot, fast slab doesn't care that it's lunchtime. Rain, frost, and heat all reschedule you, and finishing is hours on your knees and bent over. It rewards people who don't mind 5am, can roll with a cancelled pour, and protect their knees and backs for the long haul.
Residential (driveways, pads, patios) is the high-volume, accessible, price-competitive entry and the easy own-a-business path. Commercial/ICI flatwork (floor slabs, warehouse floors) means tighter tolerances, ACI certifications, and bigger equipment (laser screeds, ride-on trowels) — a higher barrier but higher pay and steadier large pours. Many start residential for cash flow and move toward commercial or add decorative as they build skill and equipment.
Don't race to the bottom on the slab everyone can pour — compete on reliability (showing up and pouring on schedule, which builders value enormously), on doing the base prep right (and pricing it honestly), and on adding higher-margin work. The pure price-per-square-foot fight is a grind; the escapes are builder relationships built on reliability, and moving up into decorative/polished or commercial work where you compete on capability, not just price.
Flatwork is production: more volume, builder clients, price competition, faster cash flow. Decorative (stamped, exposed, polished) is craft: homeowner and commercial clients, portfolio-driven, much higher margins per square foot, and off the price war. They're complementary — many crews run flatwork for steady cash flow and add decorative as the premium line that lifts the whole business. If you want margin and a way out of price competition, decorative is the upgrade.
Low licensing barrier — a business licence, WSIB, and insurance — but the real requirements are a crew that can chase a pour, the finishing tools (screeds, trowels, floats, edgers, a power trowel) and a truck, the judgment to not get caught by weather or a bad sub-base, and builder relationships that feed you driveways and slabs. Many start with residential flatwork on a couple of builders' work and grow from there.
No — a business licence, WSIB, and insurance. The 244G and ACI Flatwork certifications are voluntary credibility. The real entry requirements are a crew that can chase a pour (concrete won't wait), screeds/trowels/brooms, and the scheduling discipline to work around ready-mix deliveries and weather.
Volume and scheduling: driveways and garage pads for builders are repeatable, priced per square foot, and won by being reliable when the builder needs the pour. The margin killers are weather days, re-dos from rushed finishing, and under-priced subgrade prep — most failures are base failures.
Flatwork is production: more volume, builder clients, price competition. Decorative (stamped, exposed aggregate, polished) is craft: homeowner and commercial clients, portfolio-driven, higher margins per square foot. Many crews start flatwork for cash flow and add decorative as the premium line.
A sole proprietorship is cheaper and simpler to start, but you are personally liable for the business's debts and claims. Incorporating creates a separate legal entity that limits personal liability, can reduce tax once you are profitable, and reads as more credible to larger clients. Most contractors incorporate once they have employees, real revenue, or work on others' property.
Yes — construction is a mandatory WSIB sector in Ontario. Even independent operators and partners with no employees generally must register, and clients and general contractors will require a valid WSIB clearance certificate before you can work on their site.
You must register for and charge HST once your revenue exceeds $30,000 over four consecutive quarters. Many contractors register before that threshold so they can claim input tax credits on tools, materials, and vehicles from day one.
Ontario's Construction Act sets the rules: a 10% holdback on most contracts, prompt-payment timelines (you must be paid within set periods after a proper invoice), and an adjudication process for disputes. Understanding holdback, lien rights, and prompt payment is essential to protecting your cash flow.