Design • Build • Develop
Full-service design–build contractor for home additions & garages, legal duplex/triplex conversions, and modern renovations — serving Kitchener, Waterloo & Cambridge.
Request a Free QuoteWhy Choose SMI Builds
Full-Service, Start to Finish
We guide you from concept and design to permits, construction, and final inspection. Our designer provides options and renderings so you can see the plan before we build.
Transparent & Reliable
Hands-on project management, clear timelines, and honest estimates. No gimmicks, no surprises — just well-run projects and steady communication.
Modern, High-Quality Work
We don’t do “builder-basic” or cut corners. Expect clean, modern finishes and practical design choices that look great and stand up over time.
Our Services
Home Additions & Garages
Expand your living space with seamless additions and purpose-built garages. We evaluate multiple construction methods and can provide 3D renderings for clarity.
- Rear/side additions & second-storey
- Attached & detached garages, loft/storage options
- Permits, engineering, inspections handled
Legal Duplex & Triplex Conversions
Unlock rental income with zoning-compliant, safe suites. We handle design, approvals, fire separations, egress, and all code requirements.
- Bungalow → duplex conversions
- Duplex → triplex expansions
- End-to-end permits & compliance
Kitchens, Bathrooms & Basements
Transform the spaces you use every day. Functional layouts, durable materials, and clean aesthetics — built to your budget and goals.
- Kitchen redesigns & cabinet/layout updates
- Spa-style bathrooms with smart storage
- Basement finishing & secondary suites
How We Work
1) Plan & Design
Discuss goals and constraints, explore options with our designer, and review renderings. We align aesthetics, function, and budget before moving forward.
2) Permits & Approvals
We prepare drawings, coordinate engineering, and submit for permits — keeping you informed as we navigate city approvals.
3) Build & Manage
Dedicated project management, clear timelines, and careful site coordination. We focus on quality workmanship and tidy job sites.
4) Finish & Handover
Final walkthrough, inspections, and documentation. We stand behind our work and remain available after completion.
Recent Projects
Duplex → Triplex — Kitchener
Converted an existing duplex into a legal triplex with a brand-new unit and modern finishes. Full code compliance, permits, and inspections managed by our team.
Basement Renovation — Waterloo
Turned an unfinished basement into a bright living space with a full bathroom and rec room. From layout and permits to finishing details.
Bungalow → Duplex — Cambridge
Created a legal secondary suite while updating the main living area. Increased property value and flexible living options for the owner.
Service Area
Proudly serving homeowners and investors across Kitchener, Waterloo, and Cambridge, including the surrounding communities of Guelph, Stratford, Elmira, St. Jacobs, New Hamburg, and Ayr.
Ready to Start?
Tell us about your project and we’ll respond within one business day.
Request Your Free Consultation