ADU Fundamentals

ADUs 101: All You Need to Know To Build In Your Backyard

Sarah Cipkar

· 10 minutes

From housing one of your family members to potentially providing an additional source of income, building an additional dwelling unit (ADU) on your property comes with several benefits. It’s no wonder ADUs have rapidly become one of the most popular trends among homeowners in Canada today. After all, these units provide a practical and innovative solution to some of the issues in the Canadian housing market, including the shortage of affordable housing.

However, building an ADU is not a one-size-fits-all endeavour. There are several factors you need to consider before constructing one. In some cases, your property may not even be suitable for an ADU!

This is where ADU suitability analysis comes into the picture.

In this blog, we walk you through what ADU suitability analysis is, including the critical elements you need to consider before embarking on your ADU project. This way, you can make informed decisions when navigating the complexities of ADU construction.

Understanding ADUs and their relationship with the Canadian Housing Crisis

Recent statistics show that many Canadians are struggling to find affordable and suitable housing, particularly in major cities and urban areas. This provides homeowners with a unique opportunity to solve one of the nation’s pressing issues while making some extra income alongside other perks with ADUs.

But what are ADUs?

Additional Dwelling Units (or ADUs) are secondary housing units located on the same piece of land as a primary residence. In Canada, these units go by different names, including backyard cottages, granny flats, or in-law suites. They may also take on various forms, such as detached structures or additions to the main house.

Here are some of the more common types of ADUs:

  • Detached new construction: In this case, the ADU is typically built in the backyard as an addition to an existing home
  • Garage conversion: Here, an existing structure is converted into a fully functional living space with a bedroom, kitchen, and an HVAC system.
  • Basement conversion: This also involves converting an existing structure into a full-blown living space. However, in this case, the conversion happens to an internal structure, such as a basement.
  • Home addition: Sometimes, homeowners prefer to carve out an ADU from their existing living unit. Depending on the structure of the home, the ADU may be built as a pop-out from one side of the house or the attic.

As urban areas continue to grow, causing an increase in housing demand, an ADU is an excellent way to maximize property use and enhance living spaces. For instance, you may choose to offer your ADU to extended family members or earn extra income by renting it out. However,  proper ADU suitability analysis comes first.

Benefits of Building an ADU

ADUs offer homeowners several advantages. Here are four advantages that make ADUs an appealing option for homeowners looking to maximize their property’s potential:

Rental income

Building an ADU can provide you with a valuable opportunity to generate additional income. By renting out the ADU, homeowners can create a steady stream of rental income that can help offset mortgage payments, cover property taxes, or fund other expenses. 

Increased property value

While not every homeowner plans to sell their property, constructing an ADU is a great way to ensure you get an excellent bargain if you ever choose to. By adding a separate living unit, the property becomes more attractive to potential buyers, who may see its versatility and rental potential.

Housing for family members

Do you have a large family? Or do you frequently have loved ones visiting you? ADUs offer a practical solution for accommodating family members—whether they are aging parents, adult children, or extended family. They’ll have a separate unit to themselves while still living close by without any additional expense.

Additional housing option for accommodation seekers

By building an ADU, homeowners contribute to the availability of housing options within their community. This means you can help reduce local housing shortages and generally improve the quality of life in your community,

Key Considerations to Make Before Building an ADU

ADU suitability analysis is crucial to ensuring homeowners achieve a successful ADU construction project that enhances their property while meeting functional and financial requirements. 

Here are some key factors you need to consider before building an ADU:

1. Understand municipal zoning laws and provincial building code regulations

This is arguably the most important consideration before building an ADU. Depending on the region in Canada, some local zoning laws restrict where homeowners can build ADUs. So, you’ll first need to familiarize yourself with the permitting process, required documentation, and approval timelines. you’ll also have to ensure compliance with property laws, including variables like setback requirements, lot and coverage limits, and more. There are regulations regarding occupancy that you’ll need to bear in mind.

In addition, you need to ensure that your unit will be built to current building code standards. If you’re not sure what this looks like, you hire a reputable designer/architect, as well as a contractor so that you don’t face any sort of issues during the permitting and inspection process. Thoroughly understanding local zoning laws and code regulations is crucial to ensuring your ADU project is legally compliant and avoids potential legal challenges.

2. Assess space requirements

Next, you’ll need to evaluate the size and layout of your property to ensure you have sufficient space to accommodate an ADU. You’ll need to consider the layout and how the ADU will fit with existing structures and your local bylaws. Our lot assessment tool can help you here.

In addition to ensuring you have enough space to build an ADU, you’ll also need to plan for adequate access to the ADU, including pathways and driveways. You must also ensure privacy for both people in the primary residence and the new unit.

In addition, you also need to think about your longer-term vision.

Ask yourself what you want to use the space for—a space for your aging parent or a unit for short or long-term rental?  A home office that can convert into a guest house? You may want the unit to be flexible and allow for different uses, so accessibility and privacy considerations are a must during the design process.

Besides, proper planning helps maximize the use of available space while maintaining harmony with the primary residence.

3. Figure out financing

Finally, building an ADU can be an expensive project. So, you’ll need to make sure you’re ready to make that financial commitment. First, you’ll need to estimate the total cost of building the ADU, including design, materials, labour, permits, and inspections. 

Remember that costs can vary widely based on the size and complexity of your ADU and its location. For instance, ADUs typically cost between 150k to 300K to build in Canada.

Depending on the cost of your project, you can explore different financing options, such as home equity loans, refinancing, personal loans, or specialized ADU financing programs. You can then pick an option offer based on your specific situation.

This proactive approach helps avoid financial strain and ensures the success of your project.

4. Consider utility installation

Your additional dwelling unit will need to have its independent utility system to be fully functional. This includes everything from water and drainage to electricity and gas. So, you’ll need to consider how you connect your ADU to existing utilities.

Your ADU suitability analysis may also reveal that your current systems may be unable to handle the additional load. In this case, you’ll need to upgrade the required amenities. Either way, ensure all utility installations comply with local building codes and regulations.

Considering utility installation early in the planning process ensures that your ADU will have adequate and reliable access to essential services.

5. Account for parking requirements

Depending on where you are in Canada, local zonal laws may have specific parking requirements. 

In some cases, you’ll need to provide additional off-street parking for any new units on your property. This means you must evaluate the available space on your property to ensure it can accommodate additional parking. 

On the other hand, if local regulations in your area allow street parking for ADUs, you should also consider how additional vehicles might affect street parking in your neighbourhood. If necessary, you should speak with your neighbours to address any concerns to ensure good relations and community acceptance.

6. Evaluate the impact on your neighbourhood

While communities generally benefit from the construction of additional dwelling units, there are several factors you need to consider before building your own. 

For instance, will the placement and layout of your ADU ensure privacy for the people who will live there and your neighbors? Considering these concerns can help foster neighbourly support and smoothen the development process.

A charming 430 sq ft backyard home built by Resimate founder, Sarah Cipkar.

Also, it is best to design your ADU to complement the existing architectural style and aesthetics of your neighbourhood. This helps ensure visual harmony and can even help prevent potential opposition from neighbours.

7. Consider the impact on your property taxes and insurance

Building an additional dwelling unit on your property will have a certain impact on your insurance. So, you’ll need to review your current homeowners’ insurance policy to determine how the addition of an ADU will affect coverage. 

Depending on your provider, you may need to increase coverage limits or add specific endorsements for the new unit. 

In addition, you should also ensure that your liability coverage is adequate to protect against potential risks associated with renting out your ADU or having additional occupants on the property. By adjusting your insurance policy accordingly, you protect your investment while gaining some extra peace of mind.

Common Challenges You May Encounter When Building an ADU

  • Unexpected expenses during the ADU construction process, including unanticipated site preparation costs, design changes, material price increases, and additional permit fees
  • Construction delays due to various factors, including permitting issues, weather conditions, supply chain disruptions, and unforeseen site problems
  • Finding reliable contractors and managing their performance 
  • Securing financing for ADU construction, especially for homeowners with limited equity or credit history

Making it Happen: Resources & Next Steps

While building an ADU comes with its fair share of challenges, proactively planning and partnering with the right people can help you avoid most of these issues and successfully add an ADU to your property. At Restimate, we’ll do the heavy lifting for you.

We’ll provide you with a detailed ADU suitability analysis of your property (you can do it right here, actually) to give you valuable insights into the possibilities, cost, and timeline. Then, we connect you to backyard home builders with a track record of getting it right.

Conclusion

ADUs are great, and we can’t deny that. They offer significant benefits to homeowners—from rental income to flexible living arrangements for family members. In addition, ADUs play a vital role in addressing housing shortages in various communities.

However, before you skip to building an ADU, you’ll need to ensure that your property meets several specific criteria. This means extensive ADU suitability analysis to ensure you build a unit that meets legal, functional, and aesthetic standards. We hope this blog has been able to start you off in the right direction.

Do let us know if you have more questions, though!

Tell us about your project

Contact us directly with the chatbox in the bottom right corner, or via email at info@resimate.build

Book a Call With an ADU Experience Specialist