Can i convert the upstairs of my detached garage into a rental suite in Fredericton and what permits would i need?

Converting your garage's upper level into a rental suite in Fredericton is possible, but you'll need to navigate both zoning approval and building permits to make it legal and safe.

The City of Fredericton permits secondary suites in many residential zones under their updated zoning bylaw, but a detached garage conversion has additional requirements beyond a typical in-house suite. You'll need to contact Fredericton Development Services at (506) 460-2020 first to confirm your property's zoning allows detached accessory dwelling units and what specific conditions apply.

Building permits will definitely be required since you're creating habitable space. The conversion must meet National Building Code 2020 standards (effective May 1, 2025 for new applications in NB), including proper ceiling height (minimum 1.95m/6'5"), egress windows in any bedrooms, fire separation from the garage below, and adequate structural support for residential loads. Most garage floors aren't designed for furniture and occupancy loads.

The electrical work presents a major consideration — garages typically have minimal wiring that won't support a full dwelling unit. You'll need a licensed electrical contractor to upgrade the service, install proper circuits for kitchen/bathroom/lighting, and obtain an electrical wiring permit from NB Power (1-800-615-0522). All electrical work requires inspection by Technical Inspection Services (TIS) at 1-888-659-3222.

Plumbing is often the biggest challenge in garage conversions. Running water and sewer lines to a detached building can cost $8,000-$15,000+ depending on distance from your main house and depth required (remember, NB's frost line is 4+ feet deep). A licensed plumber must do this work and obtain permits from TIS.

Heating and insulation upgrades will be substantial. Most garages have minimal insulation unsuitable for year-round occupancy. With Fredericton's winters hitting -25°C regularly, you'll need proper wall and ceiling insulation plus a dedicated heating system — either electric baseboard, a mini-split heat pump, or extending your home's system with fire-rated ductwork.

For a basic garage-to-suite conversion in the Fredericton area, budget $40,000-$80,000+ depending on the existing structure's condition and how much plumbing/electrical work is needed. Start by calling Development Services to confirm zoning compliance — there's no point in detailed planning if your property doesn't qualify.