How do I convert my existing basement into a legal suite in Surrey?

Converting your existing basement into a legal suite in Surrey requires proper permits, meeting BC Building Code requirements, and registering the suite with the city. Surrey allows secondary suites in most single-family zones, but the conversion must comply with safety and habitability standards.

Permit Requirements and Process

Start by contacting Surrey's Building Department at 604-591-4086 or visit surrey.ca/renovating-building-development/building to determine what permits you'll need. Most basement suite conversions require a building permit, and potentially electrical and plumbing permits. Surrey's permitting process typically takes 4-8 weeks for straightforward conversions, though complex projects may take longer.

You'll need to submit detailed plans showing the proposed layout, including separate entrance, kitchen facilities, bathroom, and sleeping areas. The city will review your application against BC Building Code 2024 requirements and Surrey's specific zoning bylaws.

Key Code Requirements

The suite must have a separate entrance that doesn't pass through the main dwelling unit. Ceiling height must be minimum 7'6" in living areas (7' acceptable in some utility areas). All habitable rooms need egress windows - bedroom windows must be minimum 3.77 square feet with no dimension less than 15 inches, and the sill height cannot exceed 3'11" above the floor.

Fire separation between the suite and main house is critical - typically requiring 1-hour fire-rated assemblies between floors and shared walls. Install interconnected smoke alarms throughout both units so when one sounds, they all sound. The suite needs its own electrical panel and separate utilities metering where possible.

Structural and Safety Considerations

Basement suites in Surrey must address moisture management given our wet climate. Ensure proper waterproofing, drainage, and ventilation to prevent mold issues. The suite requires adequate natural light - typically 10% of floor area in windows, with at least 5% openable for ventilation.

Kitchen facilities must include a sink, cooking appliance, and refrigerator space. The bathroom needs a toilet, sink, and bathtub or shower. Laundry facilities can be shared with the main house or provided separately within the suite.

Professional Requirements

Electrical work must be performed by a Technical Safety BC (TSBC) licensed electrician - this is non-negotiable and requires inspection. Plumbing modifications typically require a licensed plumber, especially for new bathroom or kitchen rough-in work. Any structural modifications need engineering approval.

Most homeowners can handle cosmetic work like painting and flooring, but the mechanical, electrical, and plumbing systems require licensed professionals. Budget $25,000-$60,000 for a typical basement suite conversion, depending on existing conditions and finish level.

Surrey-Specific Registration

Once construction is complete and you receive occupancy approval, you must register the secondary suite with Surrey. This involves paying annual registration fees and ensuring the suite meets ongoing maintenance standards. Surrey conducts periodic inspections of registered suites.

Talk to two or three contractors before committing — the range of quotes will help you understand fair pricing.