How Much Does It Cost To Build A Garage Addition In Toronto?

Written by

tgcadmin

Published on

June 4, 2025

The cost of building a garage addition in Toronto typically ranges from $60,000 to $120,000, with high-end or custom builds exceeding $150,000. Final pricing depends on several factors, including the garage size, whether it is attached or detached, the condition or type of foundation, and the level of complexity, finishes, and added features such as insulation, electrical work, or living space above the garage.

Keep reading to understand the full cost associated with building a garage addition in Toronto.

Additionally, check out our Garage Estimator Calculator for an instant free estimate on your next garage addition.

‍

Garage Addition Cost Breakdown

‍

Tier	Cost Range	Description
Single Car	$60,000 - $80,000	Smaller, simple garage additions with minimal amenities. Typically for single-car garages or basic storage needs.
Mid-Range	$100,000 - $120,000	Double car garage addition with standard features. Suitable for most two-car garages or those with basic additional amenities.
High-End	$150,000 - $200,000+	Larger, more complex garage additions with premium features. May include advanced amenities, custom designs, or multi-car capacity.

‍

Basic Garage Addition

A basic garage addition, typically costing between $60,000 and $80,000, is designed to provide essential coverage and functionality without extra frills. These single-car garages usually feature vinyl siding, a standard asphalt shingle roof, and a concrete slab foundation.

The garage door is often a manual or basic automatic model, and interior walls may remain unfinished or use exposed framing. Electrical work is minimal—usually a few outlets and a light fixture—sufficient for basic tasks but not suitable for extended use or workshop activities.

Insulation may be limited or omitted entirely, and there are no climate-control features. Flooring is left as plain concrete, and cabinetry or shelving, if present, is typically open or prefabricated.

This tier is ideal for homeowners who simply need a budget-friendly solution for protecting a vehicle, creating extra storage, or adding curb appeal without investing in interior comfort or advanced functionality.

Mid-Range Garage Addition

A mid-range garage addition, costing between $100,000 and $120,000, offers a well-rounded two-car garage with practical upgrades over the basic version.

These garages are typically fully insulated, with drywalled interiors and painted finishes that provide a clean and functional look. Flooring may include sealed concrete or epoxy coatings to improve durability and aesthetics.

The space often includes automatic garage door openers, multiple lighting zones, and upgraded electrical systems—enabling use of power tools or additional appliances. You might find attic trusses or loft storage, workbenches, or space for seasonal gear.

Exterior finishes may be upgraded to fiber cement siding or brick veneer to better match the home’s design.

This tier is a great option for homeowners who want a versatile, finished garage suitable for both car storage and occasional workspace, offering long-term functionality without entering the realm of luxury.

High-End Garage Addition

A high-end garage addition, priced between $150,000 and $200,000+, delivers a fully customized, multi-use space that blends functionality with premium design.

These garages can accommodate two to four vehicles and often incorporate architectural detailing to match or enhance the existing home. Materials are top-tier: stucco, stone, or board-and-batten siding, architectural shingles or metal roofing, and custom wood or aluminum garage doors with smart openers. Interiors are often climate-controlled with heating and cooling systems, and walls may be finished with drywall, PVC paneling, or custom millwork.

Flooring includes epoxy coatings, ceramic tile, or even radiant heat systems. Amenities often include built-in cabinetry, LED lighting, slat wall storage systems, high-end security features, and sound systems. Many high-end garages incorporate loft spaces, home gyms, studios, or in-law suites above the garage, with full plumbing and HVAC systems. This tier is perfect for homeowners seeking a luxury extension of their living space, or for car enthusiasts and hobbyists who want a high-performance, visually stunning environment.

‍

Factors Affecting the Cost of a Garage Addition

Several important variables influence the total cost of building a garage addition in Toronto or other urban areas. Understanding these factors can help you better plan and budget your project:

Size and Design Complexity.

The overall size of the garage—whether it’s a single, double, or multi-car structure—has a direct impact on material and labor costs. A standard one-car garage is typically around 240 square feet, while a two-car garage ranges from 400 to 600 square feet or more. Larger footprints require more framing lumber, siding, roofing, and concrete. In addition, design complexity—such as adding a gabled or hip roof, vaulted ceilings, multiple bays, or architectural detailing—can significantly increase costs. An attached garage generally costs less than a detached one because it can share existing walls, electrical connections, and roofing lines with the main house.

Materials and Finishes

Material selection plays a critical role in pricing. Basic builds may use vinyl siding, asphalt shingles, and a plain concrete slab, while higher-end projects may feature brick veneer, Hardie board, standing seam metal roofs, custom garage doors, or natural stone finishes. Garage doors alone can vary from $1,000 for a basic steel panel to $10,000 or more for insulated wood carriage-style doors with glass inserts.

Site Preparation and Location

The condition and accessibility of your property can greatly influence construction costs. If your site has a steep slope, poor soil conditions, or existing structures that need demolition (like an old garage or shed), additional grading, excavation, and debris removal will be required. Urban properties with tight lot lines or difficult driveway access may also lead to higher costs for labor, equipment use, and permitting.

Foundation Type

The type of foundation selected will also affect your total investment. A basic concrete slab-on-grade is the most affordable and commonly used option. Monolithic slabs (which include thickened edges) or stem wall foundations (with concrete blocks or poured walls) offer more durability and elevation for water-prone areas but come at a higher cost. If you're adding a second story or loft space, the foundation must be engineered to support the additional load, increasing both design and material costs.

Customization and Amenities

Additional features like insulation, drywall, custom cabinetry, slat wall storage systems, or polyurethane-coated floors can all elevate costs. Including plumbing for a sink, electrical upgrades for EV chargers or workshops, or climate control systems like heating and mini-split cooling adds another layer of complexity. Windows, skylights, and custom lighting are popular for converting garage spaces into dual-use areas such as gyms or studios.

Labor Costs

Labor usually accounts for 50–70% of the total garage addition cost. Rates vary based on region, the skill required (e.g., framing vs. electrical work), and demand in the local construction market. More intricate builds involving masonry, HVAC, or multi-level construction typically command higher labor costs.

Attached vs. Detached Garage

An attached garage tends to be more affordable due to shared walls, roofing, and easier integration with existing utilities. A detached garage, however, often requires separate utility hookups, a freestanding foundation, and more standalone structural work. Detached garages may also require additional permits or variances, especially in Toronto neighborhoods with tight zoning regulations.

Additional Living Space or Loft Additions

Including a second-story apartment, office, or in-law suite above the garage can nearly double the cost. This type of addition involves full plumbing, electrical, HVAC, and insulation, plus structural reinforcements for load-bearing. While costly, these additions also offer significant ROI potential when used as rental suites or guest accommodations.

‍

Takeaway

In Toronto, the average cost for a garage addition typically ranges from $60,000 to $80,000, while high-end projects with custom features can exceed $150,000+. Whether you're looking for a basic addition or a more luxurious, customized garage, the final price will depend on factors such as materials, design, and site conditions.

For the most accurate estimate on your garage addition project, reach out to Toronto General Contractors today. Our expert team can provide personalized quotes and guide you through the entire process, ensuring your garage addition meets both your needs and budget.

‍

Frequently Asked Questions About Garage Additions In Toronto

Below are some of the most common questions when it comes to building a garage in Toronto.

Is A Garage Addition In Toronto Worth It?

A garage addition in Toronto offers several potential benefits that make it a valuable investment for homeowners.

Increased Property Value

A garage addition can significantly increase your home's resale value, offering an estimated return on investment (ROI) of 75% to 85%. In Toronto’s competitive market, properties with garages tend to attract more buyers, especially given the demand for practical features during the city’s harsh winters.

Additional Usable Space

Garages provide more than just vehicle storage—they offer flexible space for tools, outdoor gear, and seasonal items. Many homeowners also convert them into workshops, hobby areas, or general storage to reduce indoor clutter.

Vehicle Protection

Toronto’s winters bring snow, freezing rain, and sub-zero temperatures. A garage protects your vehicle from weather-related damage, minimizes wear and tear, and eliminates the daily task of scraping ice and clearing snow.

Flexible Design Options

With the right layout and insulation, garages can be designed for various uses beyond storage. They can function as home gyms, offices, or flex rooms—and can be finished later to become livable square footage.

Rental Income Potential

If local zoning permits, adding a secondary unit or living space above the garage offers the potential for rental income. This can help offset construction costs and provide a long-term financial benefit.

Is It Cheaper to Build an Attached or Detached Garage?

Yes, building an attached garage is generally more cost-effective than a detached one. Attached garages are typically 10–15% less expensive because they share existing structural elements—such as walls and utilities—with the main house. This reduces material, labor, and utility installation costs. Site preparation and foundation work are also simpler and cheaper. While detached garages offer more flexibility in design and placement, attached garages are quicker to build and more budget-friendly for most homeowners. For accurate pricing, it’s best to consult a local contractor familiar with Toronto’s construction market.

Can You Add a Garage to an Existing Home?

Absolutely. You can add either an attached or detached garage to an existing home. This is a common renovation that enhances storage, functionality, and property value. Key considerations include the available space on your lot, design integration with the existing structure, zoning setbacks, and building code compliance. Structural assessments may be required for attached builds, and utility connections (like electrical) need to be planned in advance. Working with an experienced contractor like Toronto General Contractors ensures your garage addition is seamless, compliant, and well-executed from start to finish.

Do You Need a Permit to Build a Garage in Toronto?

Yes, in most cases, you will need a building permit to construct a garage in Toronto. Detached structures under 10 m² (108 sq ft) may be exempt, but this rarely applies to functional garages. You’ll need to provide detailed drawings, a certificate of survey, and ensure your project complies with Toronto Zoning By-laws and the Ontario Building Code. Permit fees typically start at $220+, depending on the scope. For attached garages, architectural plans are often required. Always verify with Toronto Building Code Services or consult your contractor to avoid fines or delays.

How Much Does It Cost to Build a 24x24 Garage in Toronto?

A 24x24 foot garage (576 sq ft) in Toronto typically costs between $100,000 and $120,000. This estimate is based on a per-square-foot rate of $173–$208, which includes materials, labor, a basic foundation, standard electrical work, and basic finishes. Costs may increase depending on site conditions or added features such as insulation, plumbing, or storage upgrades.

How Much Does It Cost to Build a 30x40 Garage in Toronto?

A larger 30x40 foot garage (1,200 sq ft) can cost between $180,000 and $200,000, using an average rate of $150–$167 per square foot. This price includes basic structural work, concrete slab, electrical, framing, and finishes. Higher-end materials or custom features like heating, loft space, or advanced insulation will raise the final cost.