Reborn renovations logo.Reborn Renovations Logo without text
Schedule a consultation

Understanding Home Addition Costs: How Much Does A Home Addition Cost in Calgary in 2024?

Published February 29, 2024
Updated: March 7, 2024
Est. Reading: 14 minutes

Expanding your home and wondering how much does a home addition cost? You’re likely to encounter prices ranging broadly from $100,000 to $400,000, though an average project rings in around $250,000. Factors such as design complexity, type of addition, and location play a substantial role in the final total, which we’ll navigate together in this guide - preparing you to make an informed investment.

Key Takeaways

  • Home addition costs can vary widely, with averages around $250,000.

  • Different types of home additions will have different average prices associated.

  • Second story additions typically start at $100,000.

  • Main Floor additions (not including basement) typically start around $150,000.

  • Main floor or multi level additions that will include additional basement space, typically start around $250,000.

  • Numerous factors influence home addition costs, including location, design complexity, materials and finishes, labor costs, as well as permits and zoning laws, all contributing to the final cost of a home addition.

  • Cost estimates by room type highlight the variability in home addition expenses, with bedrooms, bathrooms, and living rooms each presenting unique cost considerations based on size, complexity, and desired finishes.

Types of Home Additions and Their Costs

Illustration of different types of home additions while discussing home addition cost

Home additions can provide a way to increase the living space of your home without having to move. It is important to be familiar with the different types and costs before beginning any physical changes or hiring contractors. The three main categories for home additions are second story (or third story), main floor, and multi-level options that each come with their own considerations and price implications.

So how much does a home addition cost? Typically, homeowners spend around $250,000 on home additions, but this cost can vary between $75,500 and $500,000 depending on factors such as project complexity and size. For example, a 400 square foot addition typically falls within the range of $150-300k while adding a modular second-story addition may cost approximately $100k at an average rate of about $250 per square foot.

On average a home addition costs tend to be greater than the cost of a home renovation.

Now let’s take a closer look at each type of home addition and its associated expenses.

Second Story Additions

If you feel like your house is lacking square footage, but you don't have the room to add space due to the proximity of your property line, a second story addition could be a cost-effective solution. This type of home addition involves building an additional floor on top of the existing structure, taking advantage of its already established foundation and footprint. The total cost can range from $100 to $300 per square foot, but may go up to $500 for more complex additions.

Second or third storey additions are a great option for a room addition where you can add a new primary suite, an extra bedroom, or in law suite.

The overall price tag for a full second floor addition varies greatly, anywhere between $200,000 to over five hundred thousand dollars depending on factors such as size, features and finishes. For instance, adding another level above the garage can cost from $75k to upwards of 200k while creating only part of a second story ranges between 60K-150K. Adding additional bedroom additions average at around 20K-55K each.

Compared to other types of home expansions that require extending or strengthening foundations, which adds significant expenses, constructing onto an existing foundation makes this option typically much more affordable due in large part because framing costs are lower. You'll save money on material and construction costs because there is no need for excavation, and less site prep

Main Floor Additions

One of the main benefits of adding a ground floor extension to your home is the ability to expand your space without major foundation work. This type of addition typically utilizes screw piles and heat runs for foundational support, eliminating the need for excavation. If your addition requires a new foundation altogether, it will be necessary to build one that resembles that of a completely new house.

The cost range for this kind of home expansion can vary significantly. A main floor home addition typically ranges from $150,000 to $300,000 based on factors such as size and scope.

A small addition may see you add a simple sun room or breakfast nook off of the kitchen (~$50k), where as a larger more complicated main floor extension may have you building rental or in law suites or adding a new primary bedroom addition off the back of your home that includes it's own HVAC systems, kitchenette and new bathroom that must be tied into existing plumbing lines ($200k+)

If you opt for extending the foundation in order to include an entire basement along with your additional main floor space, expect costs to potentially increase by over 20%. To cut down overall expenses when constructing these types of additions, preserve existing exterior finishes like brick cladding whenever possible. Additional expenditures may also include fees associated with permits, obtaining engineering services as well as covering demolition costs involved in preparing the site.

Multi-Level Additions

A multi-level addition could be a suitable choice if your needs require a more extensive expansion. As the name implies, these additions involve adding multiple stories to a home and are considered the most expensive type of home extension. They typically range in cost from $250,000 to $400,000 with an average of approximately $300,000 and can have per square foot costs varying between $150 and $300.

The overall expense of constructing a multi-level addition is determined by factors such as size, material choices, and labor expenses. Excavation and foundation work are necessary for this type of addition, which requires significant amounts of money and add to the final price.

While multi-level additions tend to be the most expensive, they also tend to create the most extra living space.

Key Factors Influencing Home Addition Costs

Estimating the expenses associated with home additions involves more than just having knowledge about the various types of additions. The final cost is influenced by a multitude of factors, such as location, complexity of design, level of customization, project-specific details and labor costs.

The price for constructing an addition can vary greatly depending on regional valuations and local rates for materials and labor. Differences in land prices and living expenses can also affect these costs. Additionally, the intricacy of the chosen design along with any personalization desired by homeowners play a significant role in determining the overall expense.

To accurately determine the total expenditure involved in adding onto your home, it’s important to consider all relevant aspects that impact its cost including where you live, labor charges, and specific requirements related to your unique project.

Location and Market Prices

The cost of adding a home addition can vary significantly depending on where you live. Different provinces and cities have their own unique factors that contribute to the overall expenses for this type of project. One important factor is labour costs, which can be influenced by local market conditions such as construction activity levels and availability of workers.

If you reside in an area with high land prices or a high cost of living, such as Vancouver or Toronto, it’s likely that your home addition will come at a higher price point. On the other hand, if you are located in an area with lower land values and more affordable living expenses, like Calgary or Edmonton, your home addition may end up being less expensive overall.

Will the Home Addition Tie In or Stand Alone?

A home addition extends upon your existing space, and so you'll have to decide if you want to seamlessly blend flooring, exterior finishes and siding, and the existing roof line of this new extra space with the existing property.

A seamless addition can see most homeowners spending more money to ensure their new room and new square footage don't stick out like a sore thumb, with both spaces clearly feeling like they belong in different decades. This often sees homeowners taking on other forms of home renovations to complete their home addition project.

The exterior of the home will often receive and entirely new wrap, so that the new and old sections do not look modular, but instead have a cohesive flow. This home addition would now include the factors and considerations of an exterior renovation.

Flooring throughout the home will often be replaced to match the selections for the new addition.

These important design choices can be significant cost factors that bring up the average price and home extension costs.

Materials and Finishes

The type of materials and finishes you choose for your home addition will greatly affect the overall cost. To keep expenses down, consider using affordable options such as vinyl siding, laminate flooring, ceramic tile, or engineered quartz countertops. Working closely with designers and contractors is essential in finding budget-friendly yet visually appealing finishes.

When it comes to flooring costs for a home addition project, prices can range from $3 to $20 per square foot depending on the chosen material. It’s also important to factor in any additional costs that may arise due to matching new interior floors and finishes with existing ones throughout the rest of the house. The fluctuating market prices for certain materials like concrete, wood or electrical components could also impact the total expense of a home addition.

Careful consideration should be given when selecting suitable materials and designs for an economical but attractive outcome in your home additions project. Taking into account fluctuations in construction industry price changes, it’s imperative proper consultations are maintained between clients, architects builders, engineers, technicians, sourcing information before making final decisions where large lump sum amounts could easily become affected. Cost effectiveness maintaining quality remains top priority.

Labor and Professional Services

The cost of labor is a major consideration when planning for a home addition, as it can make up around 50-60% of the total project budget. Hiring experienced and trained contractors is crucial for ensuring safety and compliance with building codes, especially when dealing with specialized skills or potentially hazardous materials.

Factors such as location, project complexity, and contractor experience will impact the specific costs associated with labor in your home addition. It’s important to carefully consider these factors in order to accurately plan for the overall financial investment needed for your desired additions to your home.

Permits and Zoning Laws

In order to successfully complete a home addition project, it is important to consider the impact of building permits and zoning laws. These requirements are crucial for ensuring that your home addition meets local building codes, zoning regulations, and safety standards. Depending on the specific project and location, obtaining necessary building permits can range from $200 to $2,000 in cost. Additional expenses may also be incurred for specialized tests or trade permits if homeowners choose to do some of the work themselves.

Zoning laws play a significant role in determining site preparation for home additions as well. For example, in historical districts there may be restrictions on designs or materials used. Setback requirements dictate where new structures can be placed on the property. And when applying for permits, it is essential to submit detailed plans in order to avoid any delays during construction. Inspections will also need to take place throughout the duration of the project, to ensure compliance with these rules which can affect both timeline and overall costs.

Cost Estimates by Room Type

Once the different types of home additions and their influencing factors have been discussed, it is important to consider estimated costs for various room additions such as a bedroom, bathroom, living room, sunroom or garage. Having a clear understanding of potential expenses is crucial in planning.

For instance, the cost of adding a single room like a bathroom can vary significantly depending on required plumbing and fixtures. On the other hand, a bump-out addition for expanding living rooms can range between $150,000 and $200,000.

Bedroom Addition Costs

One of the most commonly sought-after home additions is a bedroom. This could be due to an expanding family or simply the need for more space, making it a practical solution to add a spare room. Costs can vary significantly depending on factors such as size and purpose. On average, adding a general spare bedroom as part of your addition typically ranges from $15,000 to $25,000 while creating a multipurpose room with office capabilities may start at around $100-200 per square foot.

For those looking to build their dream primary bedroom suite that includes bathroom facilities and walk-in closet options, higher cost estimates would range between $60,000 and 95,000.

Bathroom Addition Costs

Expanding your home with the addition of a bathroom and laundry room can add value and functionality. This type of project typically comes at a higher cost compared to other types of additions due to the need for complex plumbing in a relatively small space. It is essential to carefully plan out fixture placement in order to keep labor and material costs as low as possible.

The price range for adding a new bathroom onto an existing home usually falls between $20,000-$60,000 but may vary depending on various factors such as size, extent of plumbing and electrical work required, choice of materials used, and any additional features desired (e.g., steam shower). The level of luxury you desire also plays into these estimated costs which could potentially increase expenses even more. When considering incorporating extra elements like walk-in closets alongside bathrooms, the overall expense will go up due to now requiring both storage and additional plumbing installations. This makes having a clear budget and a list of priorities important when planning out your bathroom addition.

It’s crucial to think ahead when contemplating the possibility of adding a bathroom and an adjoining laundry room to your home. The final cost will depend on how large or intricate you want these facilities, because installing ample extras will translate into more work needed behind the scenes. Planning carefully by weighing what items are must-have features, you’ll ensure the costs won’t be rising unnecessarily during installation where existing or new rough in plumbing has been installed.

See this post for more details about the cost of a bathroom renovation in Calgary

Living and Family Room Addition Costs

Photo of a newly added living room in a home

Expanding your existing home with the addition of a living room or family room can be an excellent way to add more space for relaxation and entertainment. The cost per square foot for such additions typically ranges from $80 to $200, depending on factors like size and materials used.

For instance, creating a 12x18 living area could come at a price tag between $75,000 and $150,000. A larger 400-square-foot family room may require investment ranging from $100,000 to as high as $250,000 based upon your choices in terms of design details.

Sunroom Addition Costs

Illustration of a sunroom addition to a house

For those seeking to enjoy an outdoor space without being exposed to harsh weather, a sunroom can be an excellent addition to your home. The cost of a basic sunroom addition typically falls within the range of $75-$200 per square foot for a three season room, while more elaborate designs with heating options like all-season or a four season sunroom can vary from $100-$350 per square foot.

On average, a three-season sunroom will run about $30,000 and a comprehensive four season room will see homeowners spending around $45,000+. The later being more common in Calgary due to our long harsh winters.

Alternatively, for those on a tighter budget, there are prefabricated kits available for building additions which offer lower prices ranging from approximately $5,000 up to $30,000.

Sunrooms are the least versatile way to add space to your home as they are very limited in what they may be used for.

Garage Addition Costs

Constructing an attached garage is an excellent way to gain extra storage space and potentially even create a dedicated work area. The cost of adding such structures can vary depending on the size, with prices ranging from $40,000 for a 1-car garage to upwards of $200,000 for a 3-car garage at roughly $60 per square foot.

In general, building an attached garage tends to be less expensive than constructing a detached garage. If you wish to include additional features like built-in shelving or storage solutions in your new structure, this could add anywhere from $17,500 up to over $50,000 onto the total project cost based on factors like materials used.

DIY vs. Hiring Professionals

When it comes to home additions, one important consideration is whether you should opt for a DIY approach or hire professionals. DIY may be suitable for tasks such as painting interiors, installing flooring, and landscaping since they can offer cost savings.

But when it comes to more technical work like plumbing, framing, roofing or drywall installation, it’s best to enlist the help of a professional general contractor. This ensures that all the necessary building codes and standards are met. Furthermore, the decision between DIY vs hiring professionals depends on several aspects which we will discuss in this section. So how exactly does one decide what approach would be most suitable? Let us delve into this topic in detail below.

Of all the types of home renovations Reborn Renovations provides in Calgary, home additions are often the renovation we most strongly encourage the use of a general contractor, and not rely on DIY work.

Pros and Cons of DIY Home Additions

While DIY home additions can save you money and lower the average home addition cost, they also come with their own set of challenges. Home additions entail comprehensive work, demanding various tools and knowledge, which can be cumbersome for those attempting it as a do-it-yourself project.

DIYers face high risks of injury, like cuts and falls, and can inadvertently cause serious issues such as poor electrical work or foundational problems due to a lack of expertise. Furthermore, mistakes made during DIY projects can lead to increased final cost, sometimes exceeding the average price of hiring a professional services, with no certainty of a significant financial gain upon the sale of the home.

If you're considering DIYing your home addition to save money, we recommend also speaking to your insurance company, as in some cases, it's easy to inadvertently make decisions that leave you ineligible for coverage should building codes not be followed or proper inspections and permitting be omitted. Additions not properly permitted or inspected may even have to be taken down.

When to Hire a Professional

When it comes to DIY home additions, there are a number of potential drawbacks that should not be ignored. In certain situations, it is much more prudent to hire professionals instead. This is especially true for house additions due to their complexity and cost.

Contractors who specialize in this type of work, like Reborn Renovations, have the expertise needed to ensure that everything is done correctly and effectively manages the scale and intricacies involved - which can often be too challenging for non-professionals. It’s best to avoid attempting DIY house additions if you lack experience with essential skills such as plumbing, electrical work, carpentry or roofing. Otherwise, you run the risk of encountering serious long-term issues.

Seeking professional help when considering home addition projects would ultimately save time and money by preventing any costly mistakes down the line caused by inadequate knowledge or skill set on these crucial components like plumbing installation/electrical wiring/carpentry techniques/roofing methods etc., where one cannot afford risking incorrect execution leading to major repairs.

Money-Saving Tips for Home Additions

Cutting costs and saving money on home additions is possible with various strategies. One approach is to take advantage of discounted building materials, such as those found at auctions or during end-of-season sales, which can significantly reduce construction expenses.

Another option for cost-effective additions is the use of less expensive building materials. Fiberglass shower surrounds vs custom glass and tile. Vinyl Plank Flooring vs Hardwood.

Planning and Preparing for Your Home Addition

Effective planning for a home addition requires conducting thorough research, defining the scope and size of the project clearly, and determining its intended purpose. It is crucial to establish a detailed budget that includes all costs involved in the construction process and leaves room for unexpected expenses.

Selecting an experienced general contractor who can manage subcontractors effectively and handle permits is vital in ensuring professional execution throughout the entire project. Managing a home addition also involves being prepared for time investment as there will be periods of active labor interspersed with waiting times for materials delivery or inspections. Making early decisions on design elements and fixtures can help avoid delays during construction.


We’ve covered a lot of ground in this post, from the different types of home additions and their costs, to key factors influencing these costs, to the pros and cons of DIY versus hiring professionals. While home additions can be a significant investment, they offer a practical solution to adding much-needed space to your home. By understanding the various costs involved and making informed decisions, you can ensure your home addition project is a success, adding value to your home and improving your quality of life.

Frequently Asked Questions

What is the cheapest home addition?

Inexpensive home addition options that can expand living space without incurring significant costs include a small bump-out or basic sunroom. These choices do not require major alterations to the foundation or installation of additional utilities, making them budget-friendly solutions for gaining extra room within your home.

How much does it cost per square foot to build an addition in Alberta?

The average cost to construct an addition in Alberta falls within the range of $100 and $300 per square foot. The final expense is determined by several factors, including the type of addition and materials chosen for construction. Ultimately, these variables dictate the total price at a rate that varies per square foot.

What is a bump-out addition?

A bump-out addition expands a single wall outward to create additional space in an existing room. It is a subset of home additions and does not necessarily have a clear dividing line from a full addition.

What are the different types of home additions and their costs?

There are several types of home additions, including second story, main floor, and multi-level options. The cost for a second story addition typically start at $100,000. For a main floor addition, the price can range from $150,000 to $250,000. A multi-level addition is the most expensive option with costs ranging from approximately $250,000 and up. A heated sunroom can cost roughly $45,000, and a single car garage addition can start at $40,000.

Contact Our Team

The award winning team at Reborn can offer preliminary, no commitment estimates to help you price out average costs to add to your existing property. But to truly get an exact addition cost, we recommend working with out team to complete a design package where together we can create detailed plans and material finishes and selections to give you a bespoke and accurate renovation estimate.

Contact us today to get started!

Categories: , ,
linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram