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Straight answers
The questions people ask most about starting and running a finish carpentry business in Ontario. Answered straight, with links to the official sources.
Most finish carpenters didn't come straight through an apprenticeship — they built base carpentry skills (framing, renovation, general site work) and then learned finish work under someone exacting. Get on a high-end trim or renovation contractor's crew, watch and practice the precision, and build a portfolio. The voluntary 403A formalizes it, but in finish work your demonstrated craft (and photos of it) matter more than the certificate.
It suits patient, precise people who get satisfaction from a perfect miter and a clean reveal — the opposite temperament from production framing. If you find framing's speed-and-grind soul-crushing but love making things look perfect, finish is your lane. If you're happiest moving fast and don't care about the last 1/16", framing pays similarly with less fussiness. Know which kind of carpenter you are.
For a skilled finish carpenter with a reputation, yes — premium hourly or per-opening rates, and the built-ins/stairs/architectural-millwork specialties command real money. It's lower-volume than production trades (you work slower, by definition), so your income is rate × reputation, not speed. A good finish carpenter with a referral base and a strong portfolio does well — $60k–110k solo, more with a specialty — and the body lasts far longer than in framing or roofing.
Trim and doors are the steady bread-and-butter — plentiful work in new builds and renovations. Stairs are a high-skill, high-value specialty that many finish carpenters move into for the premium and the challenge. Built-ins and architectural millwork installation are the highest-craft, designer-facing work with the best rates. Most start in trim, then specialize into stairs or built-ins as their skills and reputation grow.
With your phone. Finish carpentry is bought from photographs — a portfolio of crisp miters, clean stair work, and beautiful built-ins is your entire storefront. Document every job, build relationships with renovation contractors, designers, and high-end builders (who feed steady finish work), and let referrals and the portfolio do the selling. You're selling craft and trust, both of which photograph well and travel by word of mouth.
No — carpentry is a voluntary trade and most finish work is non-structural interior work that does not require permits. You need a business licence, WSIB, and insurance. The real credential is your portfolio: finish carpentry is sold on photographs of your work.
Solo finish carpenters with a reputation bill at premium hourly or per-opening rates — trim packages, stair work, and built-ins are high-margin craft. The ceiling rises with custom built-in and architectural millwork installation work for designers and high-end builders.
Framers build the structure fast, at piece rates, before drywall; finish carpenters install the visible woodwork after paint, slowly and precisely, at craft rates. Same 403A trade family, nearly opposite businesses — production speed versus precision.
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.