Second Floor, Rear & Laneway Additions — Designed and Built Under One Roof
Avoid the cost and stress of moving by expanding the home you love. From second-floor additions in Forest Hill to rear extensions in Rosedale and laneway or garden suites in Lawrence Park and Leaside, we handle design, permits, and construction as one integrated team — with fixed pricing, a dedicated project manager, and our on-time completion guarantee. You stay informed at every stage so there are no surprises.
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Trusted by 500+ Toronto homeowners
Consider the impact of your chosen addition on your home’s overall ambiance. It’s crucial to select a room that not only enhances your home’s aesthetics but also aligns with your frequent usage needs.
While these additions can visually enlarge your home, ensuring they contribute to a more spacious feel is essential for long-term satisfaction.
Custom additions can add $100–$300 per square foot to your property value — a strong return in Toronto's established neighbourhoods.
Preserve the character of your home—our experts ensure additions suit both traditional and contemporary styles.
Avoid the hassle and cost of moving by expanding your current home, so you can stay in the neighborhood you love.
With streamlined permits, design, and construction, most additions finish within half a year.
Every home has the potential to grow, and with Maserat Developments, you can expand with confidence. As Toronto’s premier home addition contractor, we specialize in high-end, custom-built expansions that enhance your living space, reflect your lifestyle, and add lasting value to your home.
Transform Your Home with Custom Additions. Unlock new possibilities with expanded living spaces, increased home value, and modern designs tailored to your vision. Here are some of the tailored home addition options we offer:
Double your living space with a beautifully integrated second-story addition. Perfect for growing families who need more bedrooms or a home office, these expansions blend seamlessly with your home’s architecture and can increase rental income.
Explore our 2nd & 3rd Floor ExtensionsExpand your living space with expertly designed room extensions, ideal for creating spacious kitchens, comfortable home offices, or luxurious master suites. Our additions enhance functionality and style without requiring relocation.
Discover our Rear & Side ExpansionsTransform your garage into valuable living space, such as a home office, rental unit, or guest suite, or add a second story to maximize your property’s potential. Our garage conversions are customized, city-compliant, and designed to integrate seamlessly with your home.
Learn About Laneway & Garden SuitesFor over 15 years, Maserat Developments has helped Toronto families create beautiful home additions. Our team is well-versed in Toronto’s diverse home styles and building regulations.
We ensure that your home addition provides you with the space you need and exceeds your expectations.
We build additions that comply with all safety codes, add valuable space to your home, and make your house more comfortable for years to come—all with meticulous attention to detail and proven results.
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At Maserat, we offer a comprehensive approach to home additions, ensuring a seamless experience from start to finish. Our team of experienced home addition contractors in Toronto makes the process simple—from obtaining permits to building. We’re committed to delivering high-quality results that exceed your expectations and add value to your Toronto home.
Custom designs tailored to your vision. Custom 3D renderings let you see your addition before construction begins.
Navigating Toronto’s building regulations. We handle Building Permits, Committee of Adjustment hearings, heritage permits, and TRCA approvals.
Bringing your addition to life. From foundation to finishing, our trades are vetted for the structural complexity additions require.
A simplified approach designed to make your renovation experience smooth and worry-free. These timeframes represent typical project durations and may be shorter or longer, depending on your specific scope and requirements.
We begin with an on-site visit to understand your vision, assess your space, and discuss your budget parameters.
Your journey begins with a friendly on-site consultation to understand your vision. Structural feasibility and local permit requirements are assessed for your specific property.
Receive clear budget guidance and explore initial design concepts together. Every recommendation focuses on creating spaces that perfectly suit your lifestyle.
Our design team produces detailed architectural drawings for your approval. Floor plans and elevations are designed to reflect your vision. Select materials and finishes that complement your style with expert guidance.
Visualize your future space using realistic 3D visualizations before construction starts. Collaborative refinements ensure the final design feels just right for your family.
We handle all building permit applications and approvals in Toronto.
All permit paperwork is handled for you with minimum hassle. Enjoy peace of mind with our 100% approval rate on building permits.
Committee of Adjustment applications are managed when needed for your project. Relax while the complex technical details are expertly coordinated on your behalf.
Our skilled tradespeople bring your vision to life. Your home is protected through careful site preparation techniques. Licensed professionals complete all structural work and systems installation.
Watch your vision come to life during the interior finishing stage. Expect weekly updates and a consistently clean worksite throughout the process.
We complete all final details. All final inspections and building code approvals are secured for your peace of mind.
Tour your completed space during a thorough quality walkthrough. Learn how everything works and receive easy-to-reference documentation.
Your project concludes with a celebration followed by ongoing support as you enjoy your new space.
Let's discuss your project — book a free consultation and get a fixed-price quote tailored to your home.
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If you’re planning a home addition in Toronto, obtaining the right permits is essential. Don’t worry—we take care of everything, but here’s a quick look at what’s involved:
Required for any structural changes to your home. The city reviews your plans to ensure they comply with safety and building codes.
You can find more details in Toronto’s official permit guide.If your addition doesn’t follow local zoning rules (like how close it is to your neighbour’s property), we may need to apply for a minor variance. This includes a hearing and takes extra time.
Learn more about minor variances and consent applications.If your home is in a heritage district, special approval is needed to keep the area’s historic character.
Homes near ravines or rivers might need extra approval from the Toronto and Region Conservation Authority.
We typically submit applications 4–6 weeks before the start of construction. A standard Toronto building permit review typically takes 10–15 business days, depending on the project scope and required approvals.
We’ve completed 500+ projects. Here’s what clients say about working with us.
Professional from start to finish. Our addition looks exactly as we hoped and came in on time and on budget.
Fixed pricing meant no surprises. The team was respectful of our home and kept the site tidy.
We needed more space without moving. Maserat delivered a beautiful second floor addition and made the process straightforward.
Our laneway suite was built on time and to code. Clear communication throughout.
The rear addition feels like it was always part of the house. Highly recommend.
From design to handover, Maserat made a complex addition feel manageable.
Every project is different. We give you a fixed quote after the consultation so you can plan with confidence.
Starting from $180,000
Varies by scope
Starting from $280,000
Varies by scope
Starting from $200,000
Varies by scope
Plan smarter with a real-time estimate tailored to your home. Use our interactive tool to estimate your home addition costs — no sign-up is needed.
Have more questions? Browse our complete FAQ centre →
Explore our other services and guides to help you plan your project.
We’re proud to transform homes across the city’s most prestigious communities. From modern custom builds in Forest Hill to full-home renovations in Rosedale and seamless additions in The Annex, every project is tailored to the character of its neighbourhood — and the vision of its homeowners.
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