General contractor in Hamilton, Ontario
One accountable company to plan, manage and build your project end to end — backed by real planning, scheduling and one accountable team.
Overseen by Johnpaul Guminkiriza, founder
PMI Member · B.Sc. Civil Engineering · MBA, Construction Management · 10+ years in project management. About the founder
Hiring a general contractor means handing your project to one company that owns the outcome. Jopie Construction Group plans the work, runs the schedule and budget, coordinates and self-performs the trades, and delivers a finished result on residential and commercial projects across Hamilton and the surrounding area. What sets us apart is the management behind the build: our projects are planned and run by one team, with scheduling, budgeting and trade coordination handled from day one.
What's included
Single point of accountability
One contract, one team, one company responsible from start to finish.
Professional project management
Structured planning, scheduling and budget control on every job.
Self-performing crew
We do much of the work in-house — drywall, painting, tiling and more — not just subcontract.
Trade coordination
Vetted trades sequenced properly so the project doesn't stall.
Permits & inspections
We handle the paperwork and coordinate approvals.
Transparent budgeting
Clear estimates and cost control, with no surprise change orders.
Project gallery: general contracting in Hamilton
Real project photography across the trades we manage and self-perform — from finished renovations to the demolition and prep work that comes before them.
Full-home renovation
Open-concept living room, new flooring throughout.
Kitchen renovation
Cabinetry, counters and layout managed start to finish.
Demolition & prep
Strip-out work managed in-house ahead of the rebuild.
How much does a general contractor cost in Hamilton?
A general contractor is paid through the price of the project, not a hidden markup on top of it, so the useful question is what your specific project costs. These are the ranges we see most often in Hamilton; the full breakdown is in our renovation cost guide.
| Project type | Typical range (CAD) | What moves the price |
|---|---|---|
| Bathroom renovation | $18,000 – $40,000 | Waterproofing, plumbing relocation, tile and fixtures |
| Kitchen renovation | $30,000 – $90,000 | Layout changes, cabinetry level, appliances |
| Basement finishing | $35,000 – $85,000 | Bathroom or suite, ceiling height, moisture |
| Whole-home interior repaint | $3,000 – $17,000 | Home size, ceilings, prep and repairs |
| Full home renovation | From $120,000 | Square footage, structural changes, age of home |
| Home addition | From $150,000 | Foundation, structure, mechanical extension |
Planning ranges in CAD for Hamilton-area projects in 2026; HST is extra. These are a starting point, not a quote — every job is priced in writing after a walkthrough. See the Hamilton renovation cost guide for how project types compare.
How long does it take?
Small single-trade jobs take days. A bathroom runs 2–4 weeks on site, a kitchen 3–6, a finished basement 6–12, and a whole-home renovation typically 2–5 months. You get a dated schedule with the written quote, before any work starts.
How we work
Consultation & estimate
We review your project, scope it, and give a clear written quote.
Plan & schedule
A realistic timeline, budget and trade plan before work starts.
Build & manage
We run the site day to day and keep you updated throughout.
Hand-over
Final walkthrough, punch list cleared, and the project signed off.
What can go wrong when you hire a general contractor — and how we handle it
- Scope gaps. The most common budget blowout is a quote that never said what was excluded. We write inclusions, exclusions and allowances down before work starts.
- Trades that stall the job. One late crew delays everyone behind it. We sequence the trades and track deliveries so the schedule holds.
- Hidden conditions. Older Hamilton homes hide surprises behind walls. We flag the risk at the walkthrough, recommend a contingency, and get any extra cost approved in writing before we proceed.
- Permit and inspection delays. Structural, plumbing and electrical changes need permits and inspections. We apply early and book inspections into the schedule.
Why Jopie
Most contractors can swing a hammer; far fewer can run a project. We bring large-scale project-management discipline to renovations and builds, so your job is delivered on time, on budget and without the chaos.
What a client says about our work
Really happy with the results. We needed some structural and finishing work done, and Jopie Construction Group was meticulous about the details. Everything feels solid, precise, and looks fantastic. We will definitely be calling them again for future projects.
Need a specific trade? See painting, renovations or commercial construction.
FAQ
What does a general contractor do?
A general contractor takes responsibility for your whole project — planning it, hiring and scheduling the trades, managing the budget and timeline, handling permits, and delivering the finished result — so you deal with one company instead of many.
Do you handle both residential and commercial projects?
Yes. We manage and build residential renovations and additions as well as commercial and industrial projects across Hamilton and the surrounding area.
What makes Jopie different from other contractors?
Our own crew self-performs much of the work, and one team plans, schedules and manages your project from start to finish — instead of you coordinating separate trades yourself.
Are you insured and WSIB-covered?
Fully insured and WSIB-covered. Documentation provided before work begins.
How much does a general contractor cost in Hamilton?
It depends on the project. Bathrooms typically run $18,000 to $40,000, kitchens $30,000 to $90,000 and basements $35,000 to $85,000. We price every project in writing after a walkthrough.
Based in Hamilton, serving the communities around it
- Hamilton · home base
- Ancaster
- Dundas
- Stoney Creek
- Waterdown
- Binbrook
- Flamborough
- Burlington
- Oakville
- Grimsby
Outside this area? Call us — there's a good chance we cover it.
Other services
Ready to start? Let's quote your project.
Tell us about your project and we'll reply within one business day with a clear written quote — or book a free, no-obligation consultation to talk it through.