A general contractor with a carpenter’s hands.
Kirwan manages your entire Toronto renovation — every trade, permit and inspection — and self-performs the carpentry most contractors sub out. One accountable point of contact, from first drawing to final walkthrough.
5.0 average — licensed, insured & WSIB-covered
Projects managed
Years on the tools
Projects managed
Average client rating
Licensed & insured
A full-service general contractor, based in Toronto.
Kirwan Carpentry takes your renovation from concept to keys. We coordinate the designers, architects and a vetted network of licensed sub-trades — managing the schedule, the permits and the budget so you have one number to call, not a dozen.
What sets us apart is that we came up on the tools. We self-perform the carpentry — so the contractor running your job is also the craftsman finishing it.
✓ Licensed & insured
✓ WSIB coverage
✓ Permits & drawings handled
✓ Fixed-price quotes
✓ Workmanship warranty
One contractor for every part of your renovation.
General Contracting
One trusted point of contact coordinating every trade, permit and inspection.
Full Home Renovations
Whole-home transformations managed end to end — design, trades and finish carpentry under one roof.
Kitchen Renovations
The heart of the home, built to last — custom cabinetry, stone and millwork detailed to the millimetre.
Bathroom Renovations
Spa-calm ensuites and hard-working family baths, waterproofed and tiled to a fault.
Custom Built-ins & Millwork
Bookcases, banquettes, panelling and closets made for your space — never pulled off a shelf.
Basement Finishing
Warm, dry, livable lower levels — suites, gyms and media rooms that feel like the rest of the house.
Stairs & Railings
Statement staircases and railings, rebuilt or restored with craft.
Decks & Patios
Cedar decks and outdoor rooms built to weather Ontario seasons beautifully.
We build homes the way they used to.
Precise, considered renovations across Toronto — measured twice, finished to the millimetre, handed over spotless.
A renovation should feel calm, not chaotic.
Conversation
We start with a proper sit-down — your vision, how you live, your budget and timeline. No jargon, no pressure.
Design & Fixed Quote
Drawings, material selections and a transparent fixed quote, so you know exactly what you’re getting before we lift a hammer.
Planning & Permits
We schedule trades, order long-lead materials and handle permits and drawings — the unglamorous part, done right.
Craftsmanship
The build. Daily tidy-ups, steady updates and the finish carpentry we’re known for. You’re never left guessing.
Walkthrough & Warranty
A detailed final walkthrough, every snag handled, and a workmanship warranty you can hold us to.
From a Dublin joinery bench to your Toronto home.
Seán began his carpentry and joinery apprenticeship in Dublin in 2010, learning the trade the old way — by hand, under craftsmen who measured in millimetres and forgave nothing.
He moved to Toronto in 2016, built with a renowned custom-home firm, and founded Kirwan Carpentry in 2020. Today he oversees every project personally.
2010 Apprenticed in Dublin
2020 Founded in Toronto
∞ Attention to detail
Homeowners who’d hire us again.
“They produced stellar results on the full ground-floor renovation of our century home — interior wall removal, oak flooring, kitchen cabinetry, a steel-lintel structural opening, a built-in bookcase and a large cedar deck. Always communicated well, delivered on time with great attention to detail, and kept an incredibly tidy site.”
Rob McMahon & Christine Elson
Full ground-floor renovation · Century home
“When it came time for an ambitious, to-the-studs gut of our main bathroom, we knew we could trust Seán to pull it off perfectly. He keeps things on budget and delivers on the timeline he sets out. It’s rare to find a company that executes the big stuff while not compromising the small details.”
Jason de Mestral-Whetter
Main bathroom gut + custom millwork
“Seán started out fixing a broken door and ended up renovating our entire house. You knew everything would be done as said, on time, and with methodical care. With a skill set that stretches from framing to fine carpentry he was a lifesaver. We’ll hire him again at the first opportunity.”
Michael Murphy
Whole-home renovation + general contracting
Rooted on the lakeshore, Long Branch to Oakville.
We’re based around Port Credit and Clarkson and work within roughly a 10 km radius — from Long Branch and the Etobicoke lakeshore, through south Mississauga, to Oakville and Bronte.
Long Branch
New Toronto
Mimico
Port Credit
Lakeview
Mineola
Lorne Park
Clarkson
Sheridan
Rattray Marsh
Oakville
Bronte
Renovate with confidence.
Renovation Guide · 9 min read
How Much Does a Kitchen Renovation Cost in Toronto? (2026)
A no-nonsense breakdown of kitchen reno costs in the GTA — what drives the price, realistic ranges by tier, and where the money actually goes.
Renovation Guide · 7 min read
Renovating a Century Home: What to Expect
Knob-and-tube, balloon framing and walls that aren’t square — a practical guide to renovating Toronto’s beautiful old houses.
Renovation Guide · 6 min read
A Realistic Renovation Timeline, Week by Week
From demo to final walkthrough — what actually happens each week of a renovation, and where delays creep in.
Have a project you’d love to bring to life?
Tell us a little about your home and what you’re dreaming up. We’ll get back to you within one business day to talk it through — no pressure, no obligation.