• Home Additions

HOME ADDITIONS TORONTO

Do you love your home and neighbourhood but are finding your family needs more space?  Perhaps you have a baby on the way or need to make more room for your teenager. We offer a wide range of home addition services, including second-story additions, ground-floor extensions, rear additions, bump out extensions and more. Maybe, you’re looking to create a new second story addition on top of your existing bungalow? Novacon Construction is a Toronto design-build company that has planned, designed and built major home additions since 2004. We build family rooms, second floors, larger kitchens, primary suites and in-law suites, and we manage the whole project under one team: design, structural engineering, City of Toronto permits and construction.

With more than 20 years of design-build experience in Toronto and a Best of Houzz 2025 award, Novacon is dedicated to providing the highest quality of service to our clients.  Our team of skilled and experienced home addition contractors work closely with their clients throughout the entire process, from the initial consultation to the final walkthrough. Novacon is committed to delivering home addition projects on time and within budget, while maintaining the highest standards of quality and safety. Our attention to detail and customer satisfaction have made us the choice for the best home addition contractors in Toronto.

Toronto Home Additions at a Glance

  • Who we are: a licensed, bonded and insured Toronto design-build company based in Scarborough, building major additions, custom homes and ADUs since 2004, with over 500 projects completed. Best of Houzz 2025 award recipient.
  • A boutique builder: we take on a limited number of major projects each year, typically 6 to 10, so we can give each one the attention it needs from planning to handover.
  • Firm fixed price: every Novacon contract is firm fixed price, so you know your construction cost before work begins.
  • Additions we build: second-storey additions, rear additions, side and bump-out additions, garage additions, in-law suite additions, sunrooms and additions to semi-detached homes.
  • One team, one contract: architectural design, structural engineering, interior design, building permits and inspections, and construction, with a dedicated project manager from start to finish.
  • Typical 2026 construction cost (before HST): rear and side additions roughly $350 to $500 per sq. ft.; second-storey additions roughly $450 to $650 per sq. ft.; small bump-outs from around $60,000. See our Toronto home addition cost guide for what these figures include and leave out.
  • Typical timeline: permit review commonly takes 4 to 12 weeks after design; construction for most additions takes 4 to 6 months. A Committee of Adjustment minor variance, if needed, adds 3 to 4 months.
  • Zoning first: we review setbacks, lot coverage, height and permitted floor area for your lot before design begins. How zoning affects Toronto additions.
  • Licensed, bonded, insured and warrantied: a licensed, bonded and insured GTA contractor carrying $5 million liability insurance and WSIB coverage, with certificates provided to every client. Our renovation and addition projects come with a 2-year warranty.
  • Transparency: 24/7 client portal with schedules, drawings, site photos and detailed monthly cost reports.

Last updated October 2026.

Schedule Consultation

Home Addition Projects

At Novacon Construction, we take pride in the home addition projects we’ve completed in Toronto and the GTA. Each project showcases our commitment to quality, our attention to detail, and our ability to transform houses into dream homes. Our expertise in home extensions is particularly beneficial for a growing family needing more space.

Our portfolio includes a wide range of projects, from second-floor additions to main floor extensions and garage additions. Each project is a testament to our team’s expertise and our dedication to delivering exceptional results. We work closely with our clients throughout the process, ensuring that the final result not only meets but exceeds their expectations. Recent Toronto addition projects include:

Home Addition Project Gallery

Schedule Your Free Consultation

As a leading home addition contractor in Toronto, Novacon Construction has had the distinct pleasure of assisting our clients’ create the renovation or addition of their dreams. We specialize in custom home renovations and additions. We can handle all of your home addition needs, whether you are looking for a sophisticated design or a cozy open concept addition.

Call us today at 416-750-7555 or fill out the form to schedule your consultation

Novacon Construction
121 Lebovic Ave, Suite C01
Scarborough, ON M1L 4T7
Phone: 416-750-7555
info@novacon.ca

BLOOR WEST TORONTO HOME ADDITION & RENOVATION

Home Remodeling vs Custom Home Addition

Remodeling an entire house or building a home addition requires a lot of time and high financial effort. But, it usually has a great return on your investment. Keep in mind, that moving tends to be more expensive and stressful than adding a room or two. Endlessly searching for that perfect home and losing money through land transfer fees, lawyers, real estate agent fees, and moving costs.

When investing $100,000+ in your Toronto home addition, you should research before choosing the best possible home addition contractor. In Toronto, our company has built its reputation over time, solidifying our leading position in the GTA as a top-rated home addition contractor. A detailed pre-construction analysis of what the addition provides is given to our customers, including a very accurate cost estimate, and time allowance to complete the project.

We think you should be in the driver’s seat when building an extension to your home. Our expertise in home renovation and home remodeling helps you to see the big picture so that the end result is your dream home. The additional space created through our projects brings your dream home to life.

Above all, we strive to be the most professional and transparent home addition contractors in Toronto. So, give us a call at 416.750.7555, so we can discuss all your home addition project’s needs in detail.

We recently finished an extension on our house (2 floors and basement) and we are very pleased with the results. Pavel and William, and all of the other staff and associates of Novacon were very professional, knowledgeable, and hard-working

They work, dedication and professionalism in detail, is very easy to note in they clients eyes and satisfaction. Novacon clients that we met during the final process of construction is really please with the quality and professionalism.

Excellent company! Amazing people! Great communication! Exceptionally conscientious and high-quality work! Would absolutely recommend them for big or small reno’s!

Why Use Novacon Construction for Your Custom Home Addition Project?

Novacon has designed and built home additions in Toronto since 2004. We are a Best of Houzz 2025 award recipient and have been voted by homeowners as a top Toronto contractor to work with on Houzz and HomeStars. Every project runs on a cloud-based project management portal (Buildertrend) that clients can access 24/7, with detailed monthly cost reports to ensure the best communication possible. Ensuring a transparent process, professionalism, and above all, superior service delivered on time and on budget.

  • Financial Responsibility to Our Clients
  • Superior Quality and Craftsmanship
  • Quality and Value to the Projects We Deliver
  • Highest Standards in Cost Control
  • On Time and on Budget
  • Real Focus on Customer Satisfaction

We offer a single-source option for the design and building of your home using our hassle-free Design Build approach to building a home addition.  We handle all aspects of the home addition process from the planning stage to final construction. You’ll have the opportunity to work side by side with our top-notch designers and builders throughout the home addition process. We can handle all aspects of the project, from the designs to acquiring all necessary building permits to construction, resulting in a beautiful and efficient home addition project.  We ensure that all of your plans and details are fully discussed and implemented into the process where possible. This streamlined approach from Novacon Construction provides you with first-class architecture and design along with dedicated building and detail-focused project management.

Home Remodeling project in Toronto Gallery (46)

Excellent company! Amazing people! Great communication! Exceptionally conscientious and high-quality work! Would absolutely recommend them for big or small reno’s!

Pavel and his team are excellent people to work with. Attention is paid to every detail and suggestions and preferences listened to and acted upon. Their word is their seal. A quality build in a timely and very professional manner.

Novacon was not only very competent construction team who did great work but they were a pleasure to have in my home.

home addition and renovation portfolio Toronto gallery birch

Benefits Of a Home Addition

Building a home addition is a great way to increase the living space in your home and improve your overall quality of life. Whether you are looking to expand your home with a second floor addition or a rear extension, the benefits are significant.

Additional living space: One of the most obvious benefits of building a home addition is that it provides you with new additional living space and a larger home. This can be especially beneficial if your family has grown, or if you are looking for more space to entertain guests. An in-law suite addition is another popular option in Toronto for multi-generational living.

Increased home value: Adding a home addition can significantly increase the value of your home, making it a great investment in the long run. It can also make your home more appealing to potential buyers if you decide to sell it in the future. Adding a second story to a ranch home or adding a living space above your garage are just some examples of additions that can greatly increase the value of your home.

Customization: A home addition allows you to customize your living space to fit your exact needs and preferences. You can choose the layout, materials, and design that best suits your lifestyle and aesthetic tastes. Novacon works with your ideas and turns them into amazing home addition designs you will love, whether you want to add more space with a rear extension or a second floor addition.

Cost-effective: Building a home addition can be a cost-efficient alternative to purchasing a new home or moving to a larger residence. Building a home addition can help you achieve your desired living space without incurring the expenses associated with relocating to a new home or renovating your entire house.

Avoiding the hassle of moving: Building a home addition can help you avoid the hassle and expense of moving to a new home. You can stay in the same neighborhood you love and maintain your current social network while enjoying a new and improved living space. If you need to add more space to your existing home, a second floor addition or rear extension can provide the perfect solution.

Home Addition Options

Planning a Home Addition in Toronto: Zoning, Permits and Structure

Most of the decisions that set an addition’s size, cost and timeline are made before construction begins. Our pre-construction phase works through them in this order, so there are fewer surprises once the walls are open.

1. Zoning sets what you can build

Toronto’s zoning by-law limits how close an addition can come to your side and rear lot lines (setbacks), how much of the lot buildings can cover, the building’s height, and the floor area permitted for your lot. We review these limits at the start so the design fits inside them, or so you know early if it can’t. More detail: how zoning affects your home addition plans in Toronto.

2. Committee of Adjustment, if the design needs relief

If an addition exceeds what zoning allows, it needs a minor variance from the City’s Committee of Adjustment. In 2026 the application fee for an addition to an existing dwelling of three units or less is $2,228.98, and the process typically adds three to four months with no guaranteed outcome. Our Committee of Adjustment guide explains how it works.

3. Structure and foundations

A rear or side addition needs a new foundation that ties into the existing house. A second-storey addition is more structural: the roof comes off, and the existing foundations, walls and beams must be confirmed, and often reinforced, to carry the new load. Older Toronto homes can bring undersized framing or rubble foundations that need remedial work, which is why we assess the existing structure with engineering before pricing.

4. Mechanical and electrical systems

Heating, plumbing and electrical all have to extend into the new space. Many older homes have an electrical service that can’t support the expanded house, or wiring that needs replacing, and these are far easier to plan for in design than to discover mid-construction.

5. Permits and inspections

Most additions require a City of Toronto building permit along with HVAC and plumbing permits, and additions to semi-detached homes usually require a party wall agreement with the neighbour. Novacon prepares and submits the permit applications and coordinates inspections on your behalf.

6. Where old meets new

A well-built addition shouldn’t read as an afterthought. Matching brick, aligning floor levels, integrating rooflines and blending interior finishes are planned in design, not improvised on site.

Thinking about budget? Our Toronto home addition cost guide includes 2026 ranges by addition type and a worked example.

Design Build Contractors

As a leading design-build contractor in Toronto, Novacon Construction offers a comprehensive approach to home additions, renovations, and custom home builds. Unlike traditional methods where design and construction are handled separately, our design-build approach integrates these two important phases. This not only streamlines the process but also allows for better communication, cost savings, and a higher level of customization for every project.

When you choose Novacon Construction as your design-build contractor, you’ll be assigned a dedicated project manager. This professional will be your main point of contact throughout the project, ensuring that everything runs smoothly and according to plan. From the initial design phase to the final construction, your project manager will oversee all aspects of your project, ensuring that your vision is brought to life exactly as you imagined it. Whether it’s a renovation or a type of home addition, we provide a seamless process.

Navigating the building codes and permit requirements in the City of Toronto can be complex, especially when building an addition to an existing house. But with Novacon Construction, you can rest easy knowing that we have extensive experience in dealing with these regulations. We handle all the necessary paperwork and ensure that your project complies with all local codes and standards.

Building an addition or a custom home is a significant investment, and choosing the right contractor is crucial. With our design-build approach, our commitment to quality, and our extensive experience in the City of Toronto, Novacon Construction is the trusted choice for homeowners looking to enhance their living space. Our custom design services ensure that every project is tailored to your specific needs and preferences, making your dream home a reality.

Home Addition Toronto
Laundry room design Toronto

Call Novacon for a Free Home Addition Consultation

A room addition can be a fantastic solution whether you are looking to create an exclusive space for work or for a home theatre or you need the space to accommodate a new member of the family or a child returning home from college. Whatever the reason, a home addition is a job best left to the professionals because of the complexity of the job involved. With our services in Toronto, we can transform your home to meet your needs.

Novacon Construction is a leading home addition contractor in the Greater Toronto area. Call us to set up your complimentary, no-obligation consultation so we can help you through the process of designing the perfect space that meets your needs and your budget and also complies with local building codes. Whether you need to increase the square footage of your home or renovate your entire home, we have the expertise to handle it.

Once we take on a job, we guarantee your full satisfaction. We also take care of obtaining all necessary permits and inspections so you don’t have to. Transform your home with our professional services and enjoy the additional space created by a well-planned and executed home addition.

For High Quality Custom Home Additions, Contact Novacon Construction Today

As a leading home addition contractor in the Greater Toronto area, Novacon Construction has had the distinct pleasure of assisting our clients’ create the home addition of their dreams. At Novacon, we have the expertise and resources to meet your specific home addition needs, whether you’re envisioning a sophisticated, high-end design or a more relaxed and open concept home addition.

Call us today at 416-750-7555 or contact us below to schedule your consultation

Schedule Consultation

Home Addition Frequently Asked Questions

Yes, we are a full service Design-Build contractor, meaning we take you from concept to completion including Architectural Design, Interior design, Structural engineering, building permit acquisition and of course, Construction.

In 2026, hard construction for a Toronto home addition typically runs about $350 to $550 per square foot. A 500 sq. ft. rear addition commonly lands between $175,000 and $275,000 in construction cost, and second-storey additions usually run higher per square foot ($450 to $650) because the roof comes off and the structure below often needs reinforcing. Design, engineering, permits, kitchens and bathrooms, contingency and 13% HST are on top of those figures. Our home addition cost guide walks through a full example.

Only if the design exceeds what zoning permits for your lot, such as setbacks, lot coverage, height or floor area. In that case a minor variance is required, which adds roughly three to four months. We check zoning before design so you know which path your project is on. See our Committee of Adjustment guide.

Often during a rear addition, with some disruption. Generally not during a second-storey addition, because the roof is removed. We plan this with you early because it affects both budget and schedule.

Construction for most additions takes 4 to 6 months, depending on scope. Before that, allow time for design and for City of Toronto permit review, which commonly takes 4 to 12 weeks. A Committee of Adjustment minor variance, if needed, adds 3 to 4 months.

The ROI for home additions is quite high when compared to most other renovations because you are adding actual square footage to the home. Depending on the type of addition you build, some actually create an ROI higher than the investment itself. Design plays a big factor in this and should never be overlooked!

This is a very difficult question as it depends on what is underneath the addition and if it(existing space) has to be renovated due to the addition itself. As a rule of thumb though, building up is slightly less than building out due to the initial costs of foundation work and site prep.

Obtaining a permit makes sure your project is in compliance with Ontario Building Code. Inspections of the project insure your safety!

This depends on the type of addition, but in general you will require a building permit(structural BLD), HVAC and Plumbing permits. However if you are in a semi-detached then you will require signoff from the neighbour in the form of a party wall agreement.

No. Novacon Construction Inc. will get all relevant permits required on your behalf.

Yes we are a full service DESIGN – BUILD company. We can provide full interior designs and architectural/engineer drawings to suit every type of project.

Yes, we carry $5,000,000 liability insurance and have WSIB. We will provide all clients with copies of our certificates.

Yes. All standard renovation or remodeling projects come with a 2-year warranty.

Novacon Construction has been in business since 2004, more than 20 years of design-build work on Toronto homes, with over 500 projects completed. Today we take on a limited number of major projects each year, typically 6 to 10, and every contract is firm fixed price.

Yes. Please see our reviews. We will also provide a list of previous clients when requested. You can also view our project gallery here.

Phone:
416-750-7555

121 Lebovic Ave, Suite C01
Scarborough, ON M1L 4T7

E-mail:
info@novacon.ca