Calgary Secondary Suites Have Doubled: What Homeowners Need to Know in 2026
Legal secondary suites have become an increasingly important part of Calgary’s housing market. Homeowners are using their basements to create rental income, accommodate family members and add greater flexibility to their properties.
The City of Calgary recently announced that the number of suites on its Secondary Suite Registry has doubled from approximately 13,000 in 2024 to 26,000 in 2026. This growth shows that more homeowners are choosing to develop and register safe, legal secondary suites rather than leaving existing basement accommodations unpermitted.
For anyone considering a new suite—or wondering what to do with an existing unregistered one—the increase also highlights the importance of understanding the design, permitting and safety requirements involved.
Why Are Calgary Secondary Suites Growing So Quickly?
Several factors have contributed to the rapid increase in registered secondary suites across Calgary.
1. Homeowners are looking for additional income
A properly designed secondary suite can provide long-term rental income that may help offset mortgage payments and other ownership costs. With affordability remaining a concern for many Calgarians, homeowners are looking more closely at how their existing properties can work for them financially.
2. Families need flexible living arrangements
Not every secondary suite is created solely as a rental property. Some homeowners need an independent space for aging parents, adult children, caregivers or extended family members.
A self-contained suite allows family members to live close together while maintaining privacy and independence. This flexibility can also make the home more adaptable as the family’s needs change.
3. Calgary needs more housing options
Secondary suites add housing within established communities without requiring entirely new buildings or neighbourhoods. They can provide renters with more choices while allowing homeowners to make better use of space that might otherwise remain unfinished or underused.
4. City programs have encouraged legalization
Calgary’s Secondary Suite Incentive Program offered qualifying homeowners up to $10,000 toward eligible safety improvements. However, funding is limited, and applications submitted after June 24, 2026 are currently being placed on a waitlist.
Homeowners should therefore confirm the current availability and requirements directly with the City before including potential incentive funding in their project budget.
What Does the Growth Mean for Calgary Homeowners?
The increase in legal suites shows that they are becoming a more established feature of Calgary’s residential market. However, it also means homeowners, renters and potential buyers are becoming more aware of the difference between a legal registered suite and an unregistered basement apartment.
A suite should not be described as legal simply because it has a kitchen, bathroom and separate entrance. A legal suite must have the necessary permits, satisfy applicable safety requirements, pass its inspections and be added to the City’s Secondary Suite Registry.
As part of recent local coverage, The Basement Renovators provided practical industry insight for a CityNews Calgary report examining the growth of registered secondary suites. The increase we are seeing reflects what is happening on the ground: more homeowners are considering legal suites as a practical, long-term use of their basements.
What Makes a Basement Suite Legal?
A legal secondary suite is a separate dwelling located within or attached to the primary residence. It normally includes its own kitchen, bathroom, sleeping area and living space.
The exact requirements depend on the property, the age of the suite and the proposed design. Common considerations may include:
- Required building and trade permits
- Proper fire and smoke separation
- Interconnected smoke and carbon-monoxide alarms
- Compliant bedroom egress windows
- Safe heating and ventilation
- Smoke-tight separation between living areas
- Appropriate electrical and plumbing systems
- Required City inspections
- Registration on Calgary’s Secondary Suite Registry
These requirements are intended to protect both the occupants of the suite and the people living in the main residence. Our Calgary legal basement-suite service covers the process from initial assessment and design through permitting, construction and inspections.
What Is the Calgary Secondary Suite Amnesty Program?
Calgary’s Secondary Suites Amnesty Program is currently scheduled to end on December 31, 2026. The program is particularly relevant to homeowners with existing suites constructed before March 2018 that have not yet been properly registered.
Under the current program, secondary-suite registration fees are waived. Existing suites may also be assessed using minimum life-safety requirements that recognize when the suite was originally constructed.
This does not mean that an older basement apartment is automatically approved. The suite must still be assessed, permitted where required, brought into compliance and successfully inspected.
Homeowners can review the current requirements through the City of Calgary’s official information about legalizing an existing secondary suite.
Why Homeowners Should Not Wait Until the Deadline
December may seem a long way off, but legalizing a suite can involve more than completing an application. A professional may need to assess the existing construction, prepare drawings, identify safety deficiencies, obtain permits and coordinate corrective work before the required inspections can be completed.
Potential issues can include:
- Bedroom windows that do not satisfy egress requirements
- Inadequate fire or smoke separation
- Non-compliant electrical work
- Insufficient heating or ventilation
- Plumbing completed without permits
- Unprotected mechanical rooms
- Missing interconnected smoke and carbon-monoxide alarms
Beginning with an assessment provides time to understand the scope and budget instead of trying to complete the process immediately before the program ends.
Should You Build a New Suite or Legalize an Existing One?
The process differs depending on whether the basement is unfinished or already contains living accommodations.
Developing a new secondary suite
Starting with an unfinished basement allows the layout, fire separation, heating, electrical system and plumbing to be planned correctly from the beginning. This can reduce the likelihood of expensive corrections later in construction.
A new Calgary basement development begins with measuring the space, evaluating existing conditions and preparing a design around the homeowner’s goals and the applicable requirements.
Legalizing an existing secondary suite
An existing basement apartment must first be assessed to determine what work, if any, is required. A suite can appear well finished while still having concealed fire-separation, electrical, heating or permitting deficiencies.
Whenever possible, existing permit records and approved drawings should also be reviewed. This helps distinguish previously approved work from construction that may require further investigation or correction.
How Much Does a Legal Basement Suite Cost?
There is no single price that applies to every legal suite. The cost depends on the basement’s size, current condition, layout, number of bedrooms, kitchen design, finishing selections and required safety or mechanical upgrades.
Major cost factors can include:
- Cabinetry, countertops and appliances
- Bathrooms and plumbing changes
- Heating and ventilation systems
- Egress windows or separate entrances
- Electrical-panel capacity
- Fire separation and sound control
- Flooring and finishing products
- Design, permits and inspections
Our guide to basement development costs in Calgary explains the factors that influence pricing. A site assessment and defined scope are still necessary to establish a reliable project budget.
Start With Design and Proper Planning
A successful legal suite begins long before construction. The first step is understanding the basement’s existing conditions and determining whether the proposed layout can satisfy the applicable requirements.
Once the scope is established, the process generally moves through measurement, design, permit preparation, product selection, construction and inspections. Proper planning helps avoid discovering critical issues after framing or drywall has already been completed.
The Basement Renovators uses a structured project-management process to guide homeowners through each stage and keep the design, selections, schedule and construction organized.
Is a Legal Secondary Suite Right for Your Home?
The growth of Calgary’s Secondary Suite Registry shows that thousands of homeowners see value in creating safe, independent living accommodations within their properties.
Whether the goal is rental income, multigenerational living or greater long-term flexibility, the first step should be a realistic assessment of the property. Not every basement has the same conditions, and identifying potential challenges early can prevent costly surprises.
If you are considering a new suite or need help assessing an existing basement apartment, contact The Basement Renovators to arrange a consultation.
Frequently Asked Questions About Calgary Secondary Suites
How many registered secondary suites are there in Calgary?
As of August 2026, Calgary has approximately 26,000 registered secondary suites, up from approximately 13,000 in 2024.
When does Calgary’s Secondary Suite Amnesty Program end?
The current amnesty program is scheduled to end on December 31, 2026. Homeowners should verify current dates and requirements directly with the City before proceeding.
Is Calgary’s $10,000 secondary-suite incentive still available?
The program is wrapping up, and new applications submitted after June 24, 2026 are being placed on a waitlist. Funding is limited and may not be available to every applicant.
Can an existing basement apartment be legalized?
Many existing suites can be legalized, but the required work depends on their age, condition, previous permits and compliance with applicable life-safety requirements. A professional assessment is needed before the scope can be determined.
Can I build a legal suite in any Calgary basement?
Not every basement has the same conditions. Ceiling heights, windows, entrances, heating, plumbing, electrical capacity and the proposed layout all need to be evaluated before confirming that a legal suite is practical.