How Much Does a Second Story Addition Cost

Here in Toronto, the ever increasing real estate prices makes adding a second story home addition an attractive option compared to buying a bigger home. Adding a second story addition to your home enables many homeowners to nearly double their existing living area at a more affordable price than buying a new home.

One of the most common questions homeowners ask is, " How much does it cost to add a second story to a bungalow in Ontario?" The cost can vary depending on factors like the size of your home, the design, and the materials used. On average, the second-story addition cost in Ontario ranges from $200 to $300 per square foot.
How Much Does Toronto Home Addition Cost 2026 (Updated)

One of the first questions people have about house extensions is: How much does an addition cost in Ontario? Well, it depends. In this blog, we'll discuss the various factors that affect Toronto house addition costs , the benefits of adding to your home, and what you can expect to pay based on the type of home addition.
How Much Does a Second-Story Addition Cost in Ontario? The quick answer? $250 - $400+ per square foot, depending on complexity, materials, and existing conditions. The more accurate answer? It depends on factors like:

How Much Does a Second
The average cost of a second-story addition in Toronto ranges from $250,000 to $550,000. Pricing depends on factors like square footage, materials and structural requierments.
In this blog, our home addition contractors in Southern Ontario have shared an expert look into the cost of adding a room to a house . So, continue reading our home addition cost guide to learn what to expect, including factors that can affect your budgeting for home additions. How Much Does A Home Addition Cost In Ontario In 2025?

How Much Do Home Additions Cost In Toronto
In Toronto, the cost of a home addition can range from $300-$500 per square foot. Basic additions typically start at $300 per square foot for a basic ground-floor extension, with second-story additions ranging from $300 to $500 per square foot due to added structural complexity. Total costs vary based on size, location, materials, and labor. Smaller projects, like adding one or two rooms, can ...
There are many options to consider and questions to ask. How much does a home extension typically cost ? What influences the price, and what extra expenses might arise? This article addresses these questions to help you more effectively plan your project. How Much Does It Cost to Put in a House Extension in Canada? House Addition Prices Per ...

Cost to Add a Second Storey
The cost to add a second storey can vary dramatically based on several factors, but most Canadian homeowners can expect to invest somewhere between $150,000 to $400,000 for a complete second -storey addition.



Home addition costs in Canada range from $150 to $400+ per square foot depending on type. Full breakdown for bump-outs, second storeys, garage conversions, and in-law suites.