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Design • Build • Develop

Full-service design–build contractor for home additions & garages, legal duplex/triplex conversions, and modern renovations — serving Kitchener, Waterloo & Cambridge.

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Why 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
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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
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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
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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.

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