Additions
Home Additions and Extensions
A home addition is more than just extra space—it’s an investment in the future of your family and home. For those who love their neighborhood but need room to grow, a custom addition can provide the perfect solution. At SOSNA, we bring over 20 years of experience to home additions across Toronto and the GTA, transforming homes to meet evolving needs while enhancing comfort, style, and functionality.
Whether you’re looking to create space for loved ones, accommodate a growing family, or simply expand the areas where you spend the most time, our team is here to help you create a space that feels like home. From second-storey additions to rear expansions, kitchen enlargements, and sunrooms, we design and build with your unique vision in mind.
As a full-service team, we handle every detail from concept to completion, ensuring a hassle-free experience with top-tier craftsmanship and personalized service. SOSNA is proud to be certified by the Canadian Home Builders’ Association and the Building Performance Institute, using eco-friendly materials and sustainable practices wherever possible. We’re the renovator you can count on to bring your vision to life.
Services We Offer
Second-Storey Additions
A second-storey addition allows you to double your living space; add bedrooms, bathrooms, offices etc.; and improve your home’s curb appeal. We can either remove your existing roof and build a new second storey from scratch or temporarily lift your roof and add a new level underneath, ensuring your second-storey addition seamlessly blends with your existing home and style.
Rear Extensions
Rear extensions are a common and practical home addition. They allow you to extend your living space to the back of your house, creating more room for your kitchen, dining area, family room, or any other space, and enhance views, natural light and indoor/outdoor connections. We can either extend your existing floor plan to create a new space or create a fresh first-floor layout.
Kitchen & Bathroom Expansions
Enhance the functionality and comfort of your home by enlarging your existing kitchen or bathroom. These expansions also offer a chance to make your home not just tailored to your needs, but also more energy efficient. Our design and construction experts will guide you through the process to create the dream kitchen or bathroom that meets your needs.
Sunrooms & Enclosed Porches
A great way to add more natural light and warmth to your home! Sunrooms and enclosed porches allow you to enjoy the outdoors without exposure to the elements or insects and can serve various functions, such as a dining area, lounge, hobby room, mud room, or greenhouse. We’ll design and build an enclosure that is well-insulated, ventilated, heated, esthetically pleasing, and durable.
Before and After Photos
We’re passionate about enhancing your living experience with our custom home additions. By extending your living space, we create new, functional, and beautiful areas in your home that perfectly match your lifestyle. Our home additions are thoughtfully designed to blend seamlessly with your existing space.






















Our Home Additions Process
At SOSNA, we adhere to a strict and detailed process to ensure a stress-free renovation journey for our clients. Our approach eliminates construction delays, surprises, and price creeps.

Step 1 - Consultation
This first meeting is crucial to lay the foundation of a successful home addition and to establish a strong working relationship. We determine if we are the right fit for each other and our team visits your home to assess its current condition. We then discuss your vision, objectives, expectations, and budget for your home addition renovation. Based on these discussions and our expertise, we provide you with a preliminary cost estimate.

Step 2 - Design
In this phase we match you with an in-house designer, project manager and estimator who prepares a detailed scope of work and drawings for your dream project. We conduct a comprehensive house inspection to pre-emptively identify potential obstacles, ensuring a smooth construction process. We pride ourselves on maintaining close collaboration with you throughout the design phase and promise to deliver you a perfect balance between design and budget.

Step 3 - Quote
Once the design is finalized, we prepare a renovation agreement that includes a fixed-price quote, a comprehensive and detailed scope of work, and payment and construction schedules. Our team is committed to providing unparalleled quality and value, and collaborating with you to ensure the project remains aligned with your budget. The quote we offer encompasses all project specifics and will not increase throughout the renovation process. That is our promise to you.

Step 4 - Construction
Your dedicated project manager oversees the entire project, and an on-site supervisor ensures construction advances smoothly and on schedule. We prioritize limiting disruption to your daily life and maintaining a clean, safe working environment. And we extend continuous support to you throughout the project and beyond, including daily briefings from the supervisor, weekly updates form project manager, history record via daily logs and project photos. Then all that’s left is to enjoy your new space!

Step 5 - Warranty and Post-Construction Service
We provide a 2-year warranty on all our labor and materials. All warranty requests are addressed within 2 business days; or immediately if they are urgent. Every service call is an opportunity for us to remind you what a smart decision it was for you to hire Sosna. We hope that you will spread the word about us in return.
Why Choose SOSNA?
We specialize in extending and transforming your living space through expertly crafted home additions. With over 20 years of experience, we will help you fall in love with your home again. Whether you’re looking to add a new room or expand an existing space, we have you covered. Our team is committed to using only the finest materials and the most skilled tradespeople, guaranteeing that every addition is built to the highest standard. When you choose SOSNA for your home addition in Toronto, you’re choosing a partner who prioritizes quality, customer satisfaction, and a seamless renovation experience, ensuring your new space is both functional and beautifully integrated into your home.
Benefits of Home Additions
A home addition is an ideal solution when you do not want to leave your neighbourhood but your home no longer meets your needs. They can allow you to increase your living space and accommodate your changing needs and lifestyle, improve the functionality of your home by creating an opportunity to revise an inefficient layout of your space, and freshen the look and style to update it and add your personality and taste. Let us help you to get the most out of your home. We pride ourselves on efficiently solving dated design issues, eliminating dysfunctional layouts, and transforming ignored areas into loved-again spaces.
Navigating Local Regulations and Permits
Home additions in Toronto and the GTA are subject to various local regulations and permits, as well as provincial standards that ensure the quality of the construction. Working with SOSNA, you will have our full support throughout the permitting process. We are familiar with the local municipalities we service and their bylaws and regulations. We will work to ensure a stress-free and smooth process for your home addition project.

Areas We Provide
Home Additions Services
SOSNA has chosen to work within a defined geographic area in the Greater Toronto Area to optimize our operations and ensure successful outcomes for our clients. We offer our home addition renovation services in the following areas:
- Aurora
- Brampton
- Etobicoke
- Maple
- Markham
- Mississauga
- North York
- Richmond Hill
- Scarborough
- Thornhill
- Toronto (North of Eglinton)
- Vaughan
Questions Our Customers Often Ask About Home Additions
What is the cost of a home addition in Toronto?
Typically, they start at about $100,000. The cost may vary from $200 to $1,000 per sq. ft. and will depend on various factors, such as the type, size, design, and complexity of the home addition. Other factors such as the materials used, or if electrical, plumbing or HVAC work is required will also impact the price. Often, an addition requires replacement of an existing furnace. For a more accurate estimate for your home addition, contact our team directly.
How long will a home addition project take?
The average project will take 8 to 15 months, including design and pre-construction planning. The duration of a home addition project depends on various factors, such as the scope and scale of the home addition, the design and planning process, the permit process, the weather and site conditions.
What challenges or issues are common with a home addition renovation in Toronto?
Home addition projects are complex and challenging and may encounter some issues or difficulties, including:
- Appreciating the cost; often it is more than people are expecting
- Finding a reliable and reputable contractor with a team of experts who can deliver quality work and service on schedule
- Obtaining the necessary permits and approvals from the municipality and other agencies
- Coordinating with neighbours who could be impacted by the project
- Minimizing renovation disruptions and inconveniences to the homeowners and their home
As a one-stop shop, SOSNA will handle the entire project and eliminate these concerns. When you choose us, you are choosing a caring, reputable renovation company with an experienced team and proven process to ensure your home addition project is as stress-free as possible.
Will my property taxes increase with a home addition?
The Municipal Property Assessment Corporation (MPAC) assesses the value of your property, which determines how much property taxes you pay. MPAC considers various factors when assessing a property’s value, such as the location, size, age, condition, and features of your property, and the sales of comparable properties in your area. A home addition may increase your property value and, consequently, your property taxes. However, the increase depends on the type and extent of the home addition, as well as the tax rate of your municipality. You can contact MPAC or your local tax office to get an estimate of how much your property taxes may increase after a home addition.
Ready to Transform Your Home?
Let’s connect and make your vision a reality! Our team is dedicated to understanding your unique needs and providing personalized renovation solutions that align with your vision and budget.