29 Questions Homeowners should ask
to avoid common mistakes when selecting a renovator
We design and build high-quality home additions across the GTA. Maybe you need room for aging parents, a bigger kitchen, or just a bit more breathing space. A well-planned addition can give you extra square footage while letting you keep the home you already love.
With more than 20 years of experience, we have completed hundreds of home additions in Toronto. Our team understands local zoning rules, the Ontario Building Code, and the city’s permit process. That knowledge helps your project move forward smoothly and reduces the chance of surprises.
Unlike companies that outsource construction, our in-house contractors, project managers, and structural engineers work under one roof. That means less miscommunication and more accountability throughout your home addition project.
We specialize in additions that don’t just add square footage, but feel like a natural part of your home. From second-story additions to family room expansions, every project is designed to integrate seamlessly with your existing architecture and finishes.
We handle the entire process under one roof. That includes design development, engineering, permit applications, and full construction. Our team manages schedules, budgets, and trades so you don’t have to coordinate with multiple companies. You work with a single project team from the first meeting to move-in.
Our home additions incorporate energy-efficient materials, HVAC upgrades, and eco-friendly solutions to enhance sustainability and reduce long-term costs. Better insulation, energy-efficient windows, and smart home integrations contribute to a more sustainable home.
We complete projects on time and within budget, with minimal disruption to your daily life, while keeping you informed at every stage. Our structured home addition process allows homeowners to feel confident throughout the entire process, from planning to construction.
Every home addition project starts with understanding how your entire house needs to evolve. Our approach brings together design expertise, technical precision, and code-compliant construction to deliver results that feel natural and fully integrated with your home.
At Sosna, we help Toronto homeowners get more out of the homes they already own by adding space where it matters most. Floor additions, main-level extensions, and lower-level upgrades all start with a clear plan. We take care of design, permits, construction, and inspections, and make sure everything meets the Ontario Building Code for safety.
Every addition is planned to improve daily life and increase value. We work closely with you so each new area feels like a natural part of the house, not an add-on. Extra bedrooms, larger kitchens, and new family rooms are designed to be comfortable, practical, and fully usable. You can book a no-obligation consultation to see what is possible for your home.
Consultation
We begin with an initial consultation to understand your goals, lifestyle needs, and how you want to use the additional space. This meeting helps us assess your home’s layout and identify opportunities to create more living space that adds value and comfort.
Design & planning
Our team develops a custom design tailored to your home, whether it’s a floor addition, kitchen expansion, or new master bedroom. We focus on maximizing usable space and ensuring your new layout flows seamlessly with your existing space.
Quote
Building a home addition in Toronto starts at $100,000 and varies based on size, design complexity, and necessary electrical, plumbing, or HVAC work. Our fixed-price quotes encompass everything from foundation to finishing, including any required heating system replacements.
Permit approvals
Home additions in Toronto always require zoning checks and building permits, and that paperwork can be confusing. Our team reviews your property, prepares the drawings, submits all applications, and coordinates with the city for reviews and inspections. We keep you updated on progress and timing so you always know where your project is and that everything has been properly approved.
Construction phase
Our in-house team carries out the build, maintaining quality, timeline, and communication throughout the process. From second-floor framing to foundation work, we create more space while respecting your home and daily routine.
Warranty
Every SOSNA renovation comes with a 2-year warranty on labour and materials, and we respond to any warranty requests within two business days, so you’re never left waiting. You’re a client for life, with priority support whenever you need it. Love the peace of mind knowing we’re a lifelong partner for any future project, always prioritizing your needs on our schedule.
Most home additions, including second-floor expansions, structural changes, and the addition of extra rooms or in-law suites, require a building permit in Toronto. This includes work involving plumbing, electrical systems, or layout modifications. Whether you’re adding a spa bathroom or increasing square footage, proper permitting ensures your project is safe, legal, and built to last.
Depending on the project, you may need zoning approval, structural sign-off, or specific permits such as HVAC or plumbing permits. All requirements must align with city standards and follow the Ontario Building Code. Our team handles every step of the process, from submissions to inspections, so your renovation stays on track without added stress.
Most permits take 4 to 8 weeks to secure. During your consultation, we’ll explain what’s needed based on your plans and timeline. Our goal is to help you move forward with clarity, knowing your home addition is fully approved and ready to build.
SOSNA’s in-house team brings attentive planning, clear communication, and expert craftsmanship to every renovation across Toronto & the GTA—creating a more beautiful, comfortable home you’ll love.
The timeline depends on the size and complexity of the project. Smaller home additions, such as rear extensions or sunrooms, may take 8-12 weeks, while second-story additions or full-house expansions can take several months.
For minor additions, staying in your home is often possible. However, larger projects that involve structural work, electrical rewiring, and plumbing installations may require temporary relocation for convenience and safety.
Yes, we integrate design elements, finishes, and materials that match your existing home. Our custom design process ensures a seamless transition between the old and new structures.
Second-story additions, kitchen expansions, and additional bathrooms offer the highest return on investment. A well-planned home addition project increases property value and enhances functionality.
A home addition is a new structure built on top of an existing house without changing its original footprint, such as adding a second story. In contrast, a home extension expands the footprint by adding new rooms or areas to the side, front, or back of the house.
Before starting your home addition, consider zoning bylaws, required permits, budget, and timeline. Zoning bylaws are city rules that determine what you can build on your property. They’ll tell you if the addition is allowed, how large it can be, and whether you need extra approvals. Booking a preliminary consultation with your city’s building division and speaking with home renovation experts at SOSNA will help you understand your options and plan your next steps with confidence.
Start by scheduling a free consultation with our team. We will discuss your needs, budget, and project scope before creating a custom design plan tailored to your home.
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