Atena Building Group is a Toronto-based, family-operated design-build firm and the creator of Kasa Suites — a standardized, design-forward ADU product delivering Laneway Suites, Garden Suites, and infill housing across the Greater Toronto Area.

With over 30 years of experience in construction and real estate investment, we offer a fully integrated, turnkey process — from pre-construction planning and zoning approvals to in-house manufacturing, architectural design, and final finishes. No subcontracted chaos. No scope creep.

Kasa Suites was built to solve Toronto's Missing Middle housing challenge for three distinct groups:
- Homeowners seeking rental income or multigenerational living without the uncertainty of traditional construction
- Realtors & Investors who need predictable numbers, repeatable delivery models, and dependable execution
- Municipal & Institutional Partners looking for scalable, gentle-density housing solutions across multiple sites

What makes Kasa Suites different: we standardize layouts, assemblies, and finishes — turning backyard housing into a repeatable delivery model without sacrificing quality or livability. Our in-house millwork and custom window manufacturing gives us cost control and schedule certainty that no traditional GC can match.

Contact us to explore how Kasa Suites can add value to your property or portfolio.

Atena Building Group

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