Get a Cost Estimate for Building A Home Addition in Toronto (and beyond)
You deserve to know what your home addition costs before hiring anyone.
Most homeowners start planning additions without clear budget expectations. They talk to architects, browse Pinterest boards, and dream about extra space. Then reality hits when they finally get pricing from a home builder.
That approach puts you at a disadvantage from day one.
We've created a home addition cost calculator that changes this dynamic. It gives you realistic budget ranges based on our comprehensive database of completed projects across Toronto. No sales pressure. No commitment required. Just honest numbers to help you plan.
Why Home Addition Cost Clarity Matters Before Design
Here's what happens when you skip the budgeting step.
You invest time and money into architectural plans without knowing if you can afford to build them. Designers create beautiful renderings that exceed your budget by 40%. You're forced to compromise or abandon the project entirely after spending thousands (or even tens of thousands) on plans.
We've watched this pattern repeat for years in Toronto's residential construction market.
Our calculator prevents this frustration. You input basic project parameters and get cost ranges that reflect real construction pricing in your area. This information helps you make informed decisions about project scope before you commit to design work. Better yet, come to us once you’ve played around and we can provide you with an even more detailed budget based on our project database!
How the Home Addition Cost Calculator Works
The tool draws from our database of home additions, extensions, and renovations completed throughout Toronto's East End and beyond. We've tracked costs, timelines, and project specifications for years to build the most accurate pricing resource available.
You answer questions about your property, desired addition size, and high-level scope of work. The calculator processes this information and provides an estimated budget for you.
The entire process takes minutes.
What You Get with our Home Addition Cost Calculator
Realistic cost estimates based on actual completed projects. A realistic budget that helps you understand what's possible within your financial parameters. Information that empowers you to have informed conversations.
You also get clarity about whether your project makes financial sense before investing in design work (something we are huge advocates for, why waste money on a design you can’t afford?).
This transparency reflects how we approach every client relationship. We believe homeowners and real estate investors deserve honest information upfront. The calculator embodies our commitment to education over sales pressure.
What Types of home additions can this cost calculator estimate?
Second-Storey Additions
Second-storey additions are by far the most popular type of home addition in Toronto, due to the accessibility of creating them in all areas of Toronto. With virtually all bungalows in Toronto able to add a second level to their home as-of-right (with little to no issues with zoning), this is usually the easiest type of home addition project to get approved and build.
Rear Extensions
If you are looking for additional interior space and are willing to lose some exterior space in your backyard to achieve that, a rear extension might be your best option. Many times our clients are completing an extension and addition at the same time to add space on multiple levels, but there are a fair amount of use cases for a single level extension.
Sunroom Additions
Are you looking for a functional three or four season space to add to your home? A sunroom addition might be the solution. You will face a unique set of constraints depending on if you want the space to be climate controlled or not, so it is best to understand how you want the space to function and for how many seasons you want to use it for to guide informed decision-making.
Basement Expansions
As part of many extension projects, many of our clients elect to also extend their basement level to get additional space. BVM Contracting has completed many basement expansions and can help you navigate the key considerations for adding additional space to your basement.
Third-storey additions
If you already have a two-level home but have the ability to add a third level (or repurpose your attic space) a third-storey addition might be the solution. For smaller properties that cannot expand out, this is sometimes the only option. There are some key considerations with respect to electrical, plumbing, and HVAC that you will want to account for before deciding if this project is right for you, so reach out to us to learn more!
Combination Extensions and Additions
As mentioned above, this is probably the second-most popular type of home addition that we complete. This is a combination of extending back or to the side, then adding a new second level onto the existing home and the new extension.
Home Additions with underpinning
Completing underpinning to your basement while you are completing a home addition is probably the most cost-effective time to complete an underpinning project, but is sometimes cost-prohibitive. BVM Contracting can help you evaluate if underpinning is the right option for your goals, and can inspect your property to determine if there are alternative options other than underpinning to achieve a higher basement ceiling height.
Front and side additions
Not as popular as rear extensions or second-storey additions, but depending on the goals of the property owner and the lot dimensions and existing conditions a side or front extension can be possible to achieve. These types of projects face a unique set of challenges that need to be considered to ensure that the costing for the project is accurate, but BVM Contracting has completed and evaluated countless front and side extensions and can help you evaluate yours!
Cantilevered home additions
Completed as part of a second or third-storey home addition, cantilevered home additions offer a little more space with minimal structural adjustments. You can easily gain an additional 40-60 square feet, which in some areas of Toronto can go a long way!
Over-the-garage Home additions
For property owners looking for a little bit of additional space without completely tearing off their entire roof, an over-the-garage addition might be a great option! This type of home addition involves adding a level on top of an integral (attached) garage, which is usually enough for an extra bedroom.
Side-split Home Additions
We have a unique experience with side-split home additions with many of our immediate service areas having that type of layout. This has given us quite a bit of experience working on side-split additions, which usually involves adding a fourth level on top of the existing ground level (level 2).
Back-split Home Additions
Similar to side-split home additions, back split additions involve adding a fourth (or even fifth) level to a 3 or 4 level backsplit. We have completed both types of back-split additions and can help you navigate the process!
BVM Contracting’s Home Addition Cost Calculator
Your Next Step: Book Your Home Addition Project Consultation
Try the calculator with your project details. See what your addition might cost based on real Toronto construction data. Use this information to plan your next move with confidence.
No consultation required. No contact information needed unless you want to discuss your specific project with our team.
We're here to provide the honest guidance that Toronto's residential construction industry often lacks. The calculator is part of that mission.
Start planning your addition with realistic numbers instead of guesses.