Basement renovation in Hamilton, Ontario
Turn an unfinished basement into living space — extra bedrooms, a rec room, an in-law suite or a rental — built and managed by 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
A finished basement is one of the best returns on investment in a home, and Jopie Construction Group handles the whole basement renovation across Hamilton and the surrounding area — framing, insulation, drywall, flooring, trim, and bathrooms or kitchens where needed. Because we self-perform and manage the trades under one team, your basement gets finished properly, on schedule, without you coordinating a dozen contractors.
What's included
Full basement finishing
Framing, insulation, drywall, flooring and trim to a finished space.
Bedrooms, rec rooms & offices
Turning empty space into rooms you'll actually use.
In-law & rental suites
Separate living space, where layout and permits allow.
Basement bathrooms
Adding a bathroom, including plumbing rough-in coordination.
Egress, code & permits
Handled as part of managing the project.
Moisture-aware builds
Building basements right so they stay dry and comfortable.
How much does it cost to finish a basement in Hamilton?
Most basement finishing projects we quote in Hamilton run $35,000 to $85,000, depending on size, ceiling height, whether a bathroom or suite is included, and moisture mitigation needs.
| Scope | Typical range (CAD) | What moves the price |
|---|---|---|
| Open rec room, roughly 600–800 sq ft, no bathroom | $35,000 – $50,000 | Ceiling height, insulation, flooring and lighting level |
| Bedroom, 3-piece bathroom and rec space, roughly 800–1,000 sq ft | $50,000 – $70,000 | Plumbing rough-in, egress window, finish level |
| In-law or rental suite: kitchenette, separate entry, egress, fire separation | $70,000 – $85,000+ | Permits, zoning, HVAC and electrical upgrades, waterproofing |
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?
Most basement finishing projects take 6–12 weeks on site, depending on size, whether a bathroom or suite is included and how long permits and inspections take.
How we work
Consultation & quote
We assess the space, talk through the layout, and quote it.
Plan & permit
Design the layout and handle the permits and approvals.
Build
Framing through finishing, managed and self-performed by our team.
Hand-over
A finished, inspected, move-in-ready basement.
What can go wrong when finishing a basement — and how we prevent it
- Moisture behind the finished walls. Finishing over a damp foundation grows mould. We assess moisture and drainage first, and can waterproof before framing.
- Low ceilings and ductwork. Beams, ducts and stacks eat headroom. We plan bulkheads and layout before framing starts.
- Egress and code for bedrooms and suites. Bedrooms need proper egress and suites need fire separation. We confirm requirements and permits at the start.
- Permits and zoning. A secondary suite is subject to zoning and permit rules. We tell you what is feasible after a look at the space.
Why Jopie
Basements have their own challenges — moisture, egress, ceiling height, code. We plan for them up front and manage the build properly, so you get a finished space that's done right, not a problem down the road.
What a client says
They were punctual, professional, respectful of our home, and kept us informed throughout the project.
Related: basement waterproofing, framing, drywall and painting — all handled by the same team.
FAQ
How much does it cost to finish a basement in Hamilton?
Most basement finishing in Hamilton runs $35,000 to $85,000, depending on size, ceiling height, whether a bathroom or suite is included, and moisture mitigation needs. See our renovation cost guide for full ranges, or call for a free walkthrough quote.
Can you add a bedroom or bathroom in the basement?
Yes — we build basement bedrooms (with proper egress), bathrooms and rec rooms, and coordinate the plumbing and electrical as part of the project.
Do you handle permits for basement renovations?
Yes. We handle the permits and inspections, which matter for basements because of egress, electrical and code requirements.
Can you build a basement apartment or in-law suite?
Where zoning, layout and permits allow, yes — we can build a separate living suite. We'll tell you what's feasible after a look at the space.
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.