Secondary suites in the city of nelson: a guide for homeowners, buyers & sellers 

A secondary suite can be a helpful source of long-term rental income, a place for family members, or added flexibility as household needs change. But before creating, buying, selling, or relying on income from a suite in Nelson, it is important to understand whether it is conforming, permitted, and safe.

What Is a Secondary Suite?

A secondary suite is a self-contained dwelling within a house or duplex. It generally has its own kitchen, bathroom, living area, and sleeping area, while remaining part of the same legal property as the main home.

A basement suite is the most common example. A suite may also be created in another portion of a house, provided it meets City zoning and BC Building Code requirements.

A secondary suite cannot be separately stratified and sold as its own unit. It remains part of the same real estate property as the principal dwelling.

A laneway house is different from a secondary suite. A laneway house is a separate dwelling located on the same property as the main home. It has its own regulations and may involve additional requirements.

Start with Zoning

Not every home in Nelson automatically qualifies for a secondary suite. The ability to apply for one depends on the property’s permitted use, the minimum lot size required for an additional dwelling in that zone, and the specific conditions that apply to the site.  

Before making plans we suggest that you confirm:

• The property’s zoning and whether a secondary suite is permitted.

• Whether there is already another dwelling unit on the lot.

• Whether the lot can meet its required parking requirements.

• Whether existing development on the property affects what can be added.

• Whether the home has the necessary water, sewer, electrical, and emergency access capacity.

Parking and Access

The property must generally be able to accommodate an additional off-street parking space for the suite. The City guide identifies a typical required stall as 6 metres by 2.75 metres, although the total parking requirement can depend on the age of the building and the specific property. In some situations, a parking requirement may be waived, but this should be confirmed directly with City of Nelson staff.

Safe emergency access is also important. The City requires a clear, unobstructed, hard-surfaced path from the street to the entrance of the dwelling unit. The path must be at least one metre wide, maintained clear of snow and debris, and designed without obstructions such as sudden drop-offs or locked gates. The distance from the street curb to the entrance generally cannot exceed 45 metres.

Every dwelling entrance needs exterior lighting, and the suite must have clear civic addressing. For secondary suites, the address includes the letter “A,” placed so it is visible from the street along the illuminated route to the suite entrance.

Safety Requirements

A building permit is required to create a new suite or to authorize an existing suite. The City’s review is focused on health and life safety for everyone living in the home.

Common requirements include:

• Proper fire separation between the suite and the main dwelling.

• Fire rated and self closing doors where doors are located in a fire separation.

• Hardwired smoke alarms in both dwelling units, on every level, and in bedrooms.

• Carbon monoxide alarms near bedroom areas where there are fuel burning appliances or an attached garage.

• A safe exit from the suite, preferably directly to the outside.

• A second means of exit if the suite entrance opens into a shared interior entry.

• Properly sized bedroom egress windows for emergency escape.

• For an existing conversion, the guide states that ceilings generally need to be at least 1.95 metres, or 6.4 feet, high. New construction generally requires a minimum ceiling height of 2.1 metres, or 6.9 feet. Some lower clearance may be accepted below beams and ductwork.

The suite must also have appropriate heating and ventilation. Separate heating is generally preferred so that smoke cannot travel between units through shared ductwork. Kitchens and bathrooms require exhaust fans vented to the exterior.

Water, Sewer and Utilities

A suite adds demand to the home’s plumbing, water service, sewer connection, and electrical system. In some cases, upgrades are needed before a suite can be approved.

For example, the City’s guide indicates that a property adding a suite within an existing single dwelling may need a minimum three quarter inch water line. A property with a third dwelling unit, such as a main home, suite, and laneway house, may need a one inch water line. The owner is responsible for the cost of any required upgrade.

Plumbing capacity also needs to be reviewed. An older home may have a water supply line that is too small to serve all of the plumbing fixtures in both the main home and suite. New or previously unpermitted plumbing work may require a separate plumbing permit.

A licensed electrician should assess whether the existing electrical service can handle the added load. A separate electrical meter is not required, but it may be an option where an owner wants a tenant to be responsible for their own electrical use. If a second meter is installed, the City requires a building permit for the suite before Nelson Hydro will provide the service and meter.

Utility Charges and Suite Status

The City charges additional water and sewer utility fees for secondary suites. Its guide says that a

An important distinction for buyers and sellers: an additional utility charge does not necessarily prove that a suite has a current building permit or meets all zoning and building code requirements. Utility billing and permit status are separate matters.

Existing or “Non-Conforming” Suites

Many older Nelson homes have spaces that have been used as suites for years. These may have a kitchen, bathroom, separate entrance, or rental history, but that does not automatically mean they are authorized or conforming under current requirements.

“Non conforming,” “unauthorized,” and “illegal” are often used casually, but they can mean different things:

• A conforming suite is permitted by zoning and has been authorized through the required permit and inspection process.

• A non-conforming suite may be an older suite that does not meet one or more current requirements, such as parking, access, zoning, servicing, or building code standards.

• An unauthorized suite may have been created or altered without the required building, plumbing, or electrical permits.

The City of Nelson’s guide confirms that a building permit is required both to construct a new suite and to authorize an existing one. A City review will determine what upgrades or information are needed for that particular property.

A Practical Note for Buyers and Sellers:

We see both conforming and non-conforming suites in Nelson homes, and many are currently tenanted. We are not here to judge whether a homeowner should or should not have a suite. Our role is to help the buyers and sellers we work with understand what they are buying or selling.

This article is for general information only and is not legal, building, permitting, engineering, or real-estate advice. The City’s secondary-suite guide supplied for this article was published in 2020 and notes that regulations, fees, and requirements can change. Confirm current requirements directly with the City of Nelson Development Services and qualified professionals before relying on a suite’s status or beginning any work. 

• Team Bio