In-Law Suite Additions

Your Trusted Toronto In-Law Suite Contractor

Build a Legal, Valuable Secondary Suite with Deomax

Is your Toronto home ready for the next chapter? Whether you’re welcoming aging parents, supporting adult children, or creating a smart investment property, a well-designed in-law suite (also known as a secondary suite or granny flat) offers the perfect blend of togetherness and independence.

But navigating Toronto’s specific zoning bylaws, building codes, and permit processes can feel overwhelming. That’s where Deomax steps in. As your dedicated GTA in-law suite contractor, we don’t just build spaces; we build peace of mind, ensuring your project is not only stunning and functional but 100% legal from blueprint to final inspection.

Why Choose Deomax for Your Toronto In-Law Suite Project? 

Forget the stress of coordinating multiple trades or deciphering complex regulations. Deomax is your single point of contact for a seamless, end-to-end experience. Here’s why Toronto homeowners trust us:

• Toronto Bylaw & Code Experts: We live and breathe the City of Toronto’s Zoning By-law (Chapter 150, Section 150.10) and Ontario Building Code. We know exactly where secondary suites are permitted (detached, semi-detached, townhouses), the 45% floor area rule (and the exception for one-storey homes!), and the critical requirements for egress, fire separation, and soundproofing. No guesswork, no costly mistakes.
• Full-Service Design-Build: From your initial vision to the final walkthrough, we handle it all. Our process includes:

– Feasibility & Zoning Check: We’ll confirm your property qualifies for a secondary suite under Toronto regulations.

– Permit-Ready Plans: Our experienced designers create beautiful, functional layouts that meet all code requirements, streamlining the City of Toronto building permit application process.

– Seamless Construction: Our skilled, insured tradespeople execute the build with precision and care, whether it’s a basement conversion, a garage transformation, or a brand-new addition.

– Dedicated Project Management: Your personal project manager is your guide, providing clear communication, timelines, and access to our online portal 24/7.

• Transparent, Guaranteed Pricing: Get a detailed, upfront quote with no hidden fees. We stand by our timelines and budgets, so you can build with confidence.
• Built for Value & Lifestyle: We design suites that enhance your family’s life and your property’s worth. Think private entrances, modern kitchens, accessible features, and high-quality finishes that attract tenants or make family feel truly at home.
• Insured & Warrantied: Rest easy knowing your project is covered by $5M liability insurance, WSIB, and our comprehensive 2-year warranty on all workmanship.

Understanding Toronto’s In-Law Suite (Secondary Suite) Regulations

Knowledge is power, especially when it comes to legal compliance. Here’s a clear breakdown of Toronto’s key rules for secondary suites, based on the official Zoning By-law:

• What is a Secondary Suite? It’s a self-contained residential unit within a single-family home (detached, semi-detached, or townhouse), complete with its own kitchen, bathroom, and living/ sleeping area. It’s the legal term for what most people call an “in-law suite” or “granny suite.”
• Is it Allowed on My Property? Generally, yes, if you own a detached house, semi-detached house, or townhouse anywhere in Toronto. Even in zones like RA, RAC, CL, CR, or industrial areas (I, IH, IE, IS, IPW), a secondary suite is permitted if the main house type was lawfully established there.
• How Many Can I Have? One secondary suite is allowed per existing dwelling unit on your property.
• How Big Can It Be? The suite’s interior floor area must be no more than 45% of the total interior floor area of the main dwelling unit it’s within. Important Exception: If you have a one-storey detached house and are putting the suite in the basement, it can occupy the entire basement level.
• Beyond Zoning: Building Code is Key: Zoning says “you can,” but the Ontario Building Code dictates “how you can.” This includes:

– Egress Windows: Required in every basement bedroom for safe emergency exit.

– Fire Separation: Proper fire-rated walls, floors, and doors between the suite and the main house.

– Sound Insulation: Adequate soundproofing for privacy.

– Separate Entrance: While not always mandated by code for legality (a lockable internal door can suffice), a separate entrance (especially a basement walkout or side door) is highly desirable for tenant privacy and property value. We specialize in integrating these seamlessly.

– Mechanical & Electrical: Separate or adequately sized systems to serve both units safely.

Confused? Don’t be. Our free consultation includes a clear assessment of your property’s potential and the specific regulations that apply to you.

Popular In-Law Suite Options We Build Across the GTA

Every family and every home is unique. Deomax specializes in custom solutions:

• Basement In-Law Suites (Most Popular): Transform underutilized space into a private haven. We expertly handle waterproofing, ceiling height, egress windows, and creating inviting, well-lit living areas. Perfect for aging parents or rental income.
• Garage Conversions: Turn your garage into a independent suite. Ideal for adult children or as a home office/ guest suite combo.
• Main Floor Additions: Build a new wing or bump-out to create a spacious, accessible suite on the same level, often ideal for mobility needs.
• Attic Conversions: Create a cozy, private retreat with unique character (subject to structural feasibility and headroom requirements).
• Backyard Suites (Laneway Suites – Check City Eligibility): While subject to specific City of Toronto laneway suite programs and zoning, we can advise if your property qualifies for this increasingly popular option.

Does an In-Law Suite Add Value to Your Toronto Home?

Absolutely, and in multiple ways:

• Increased Market Value: Homes with legal secondary suites are highly sought after in Toronto’s competitive market, often commanding a significant premium.
• Rental Income: Generate consistent monthly cash flow to offset your mortgage or household expenses. A legal suite attracts quality, long-term tenants.
• Family Savings: Avoid the high costs of assisted living facilities or separate apartments for family members.
• Future Flexibility: The suite can adapt to changing family needs or become a dedicated home office, gym, or guest space.

While ROI varies, the lifestyle and financial benefits often far outweigh the initial investment, especially with a well-executed, legal build by Deomax.

The Deomax Difference: Stress-Free, From Concept to Keys

Building an in-law suite shouldn’t add stress to your life. Our proven process is designed for clarity and confidence:

1. Free In-Home Consultation: We visit you, discuss your vision, assess your property, and outline feasibility based on Toronto regulations.
2. Custom Design & Permitting: Our designers create your perfect suite layout. We handle all drawings and submit the building permit application to the City of Toronto.
3. Transparent Proposal: Receive a detailed, fixed-price quote with a clear timeline.
4. Seamless Construction: Our project manager and skilled crew take over, keeping you informed every step of the way via our online portal.
5. Final Inspection & Handover: We ensure the suite passes all City inspections and hand you the keys to your beautiful, legal new space, backed by our warranty.

Ready to Build Your Dream In-Law Suite? Call Deomax Today for Your Free, No-Obligation Consultation!