A legal basement suite can create space for aging parents, adult children or a long-term tenant — and help offset the cost of homeownership. But a basement suite in Sherwood Park is more than a finished basement with a kitchen. Strathcona County has specific rules for secondary suites, and following them is what makes a suite safe, legal and insurable.
This guide explains how secondary suites work in Strathcona County, the key requirements and how to plan your project.
What Is a Secondary Suite?
Strathcona County defines a secondary suite as one additional self-contained dwelling unit located within a single dwelling. A basement suite is the most common example. A suite that isn’t connected to the house — such as a separate building in the backyard — is treated differently, as a garden suite.
It’s important to understand the difference between a basement development and a secondary suite. Finishing your basement as extra living space for your household is not the same as creating a separate, self-contained unit with its own kitchen and living area. The requirements for a suite are more involved.
Key Rules for a Basement Suite in Sherwood Park
Requirements can change, so always confirm current details on the county’s Strathcona County secondary suite permits page before you begin. At the time of writing, key points include:
- One suite per home: only one secondary suite may be considered per dwelling.
- No subdividing: the land title cannot be subdivided for a secondary suite.
- Permits required: both a development permit and a building permit are needed, along with trade permits for electrical, plumbing and gas work.
- Size and ceiling height: the county sets minimum standards for suite size and ceiling height.
Safety Requirements
Secondary suites must meet safety standards that protect everyone in the home. Several of these affect how a basement is built.
Fire Separation
The county requires fire-protected walls and ceilings between a basement suite and the main house, as well as around common exits. This affects drywall, ceiling construction and how shared spaces are designed.
Exits and Bedroom Windows
Under Alberta’s secondary suite standards, a suite must have a direct exit to the outdoors, and bedrooms need windows that allow emergency escape. In many basements, this means installing or enlarging egress windows.
Smoke Alarms
Smoke alarms are required in both the main dwelling and the suite, and they must be interconnected so an alarm in one unit warns the other.
Sewer Backflow Protection
Where a suite is in the basement, Strathcona County requires all basement fixtures, including floor drains, to be protected from sanitary sewer backflow — typically with backwater valves.
Electrical Requirements
Electrical work in a secondary suite is closely regulated. In Strathcona County:
- Only a Master Electrician can obtain the electrical permit and perform the work.
- An electrical load calculation must be submitted with the permit application to confirm your home’s service can support the suite.
- If the service isn’t sufficient, it may need to be upgraded before work proceeds.
- A separate electrical panel for the suite is recommended.
- At least two electrical inspections are required, typically at rough-in and completion.
Planning Your Basement Suite
Assess Your Basement
Ceiling height, window locations, moisture conditions, plumbing access and existing structure all affect whether a suite is practical and what it will cost. A site assessment is the best first step.
Design for Privacy and Comfort
Think about separate entrances, sound separation between units, laundry arrangements and natural light. A well-designed suite is easier to rent and more comfortable for family members.
Budget for Code Requirements
Egress windows, fire separation, electrical upgrades and backflow protection add cost compared with a standard basement development. Plan for these from the start.
For a broader look at costs and process, see our basement renovation services.
Rules May Be Changing
Strathcona County has been gathering public input on housing affordability, including where secondary suites are allowed and whether to remove the on-site parking requirement for suites. If you’re planning a suite, check for the latest regulations before you finalize your design.
Why Work With an Experienced Contractor
A basement suite involves development and building permits, multiple trades and several inspections. An experienced contractor coordinates the process and makes sure the work meets code the first time.
Prep-N-Reno has more than 40 years of experience and is insured and WCB-covered. Learn more about Prep-N-Reno.
Start Planning Your Suite
A legal basement suite in Sherwood Park can add flexibility and value to your home. We’ll assess your basement, explain the requirements and help you plan a suite that’s safe and built to last.
Visit our home renovation in Sherwood Park page or book a design consultation today. Call 780-893-8552.