What permits do I need to convert a garage into an apartment in Fredericton New Brunswick?

Converting a garage into an apartment in Fredericton requires a minimum of three permits: a building permit, an electrical permit, and a plumbing permit. Depending on the scope, you may also need a development permit (zoning approval) and a mechanical permit for HVAC work. The City of Fredericton's Development and Building Inspection Services handles all of these, and you should begin the process with a pre-application consultation to understand what is permissible on your specific property before investing in design drawings.

The development permit (zoning approval) is your first hurdle. Fredericton's zoning bylaw determines whether a secondary dwelling unit or apartment is permitted on your property. The city has been progressively expanding where secondary suites are allowed, reflecting provincial and municipal housing policy goals. However, your property must meet specific criteria — zone classification, lot size minimums, parking requirements, and potentially owner-occupancy conditions. If your property is in a zone where secondary suites are permitted as of right, the development permit is straightforward. If a variance or rezoning is required, the process takes longer and involves public notification and a hearing before the Planning Advisory Committee. Contact the City of Fredericton's planning department early — this step determines whether the project is feasible before you spend money on design and permits.

The building permit is required for the structural, insulation, fire separation, and general construction work involved in the conversion. Your permit application will require scaled drawings showing the proposed floor plan, wall sections, insulation details, window and door locations, egress provisions, and fire separation assemblies. If the garage is attached to the main dwelling, the fire separation between the apartment and the house must meet the NB Building Code's requirements — typically a 45-minute fire-resistance rating achieved with 5/8-inch Type X drywall, fire-rated doors, and fire-stopped penetrations. The building inspector will review the plans and conduct inspections at key stages: framing, insulation, rough-in services, and final completion.

The electrical permit covers all new wiring for the apartment — and a garage-to-apartment conversion requires extensive electrical work. The apartment needs its own electrical panel or sub-panel, dedicated circuits for kitchen appliances (refrigerator, stove, dishwasher), bathroom GFCI circuits, bedroom arc-fault circuits, general lighting, and receptacles meeting the minimum spacing requirements of the CEC. Smoke and carbon monoxide detectors must be hardwired and interconnected. If the apartment will have its own electrical metre, NB Power must be involved in the service connection. All electrical work must be done by a licensed electrician.

The plumbing permit covers the kitchen and bathroom plumbing — drain, waste, vent (DWV) lines, water supply, and fixtures. If the garage slab does not have existing plumbing beneath it — and most do not — the concrete must be cut and trenched to install drain lines connecting to the municipal sewer or septic system. In Fredericton, connections to the municipal sewer system require approval, and a backwater valve is typically required to prevent sewer backup into the below-grade apartment space. A licensed plumber handles the permit, installation, and inspections.

Fredericton's climate demands proper insulation and moisture management in any garage conversion. The city's frost depth reaches 4 to 4.5 feet, and winter temperatures regularly hit -25 to -30 degrees Celsius in January and February. The converted space must meet the NB Building Code's energy efficiency requirements — R-20 walls minimum, R-32 to R-50 ceiling — and a proper air and vapour barrier system must be installed to prevent condensation within the wall assembly. The existing garage slab likely has no vapour barrier beneath it, which requires a moisture management strategy for the flooring system.

Budget for a full garage-to-apartment conversion in Fredericton runs $35,000 to $55,000 including all permits, structural work, insulation, drywall, flooring, kitchen, bathroom, electrical, plumbing, HVAC, and finishing. Permit fees in Fredericton are based on project value — expect $500 to $1,500 in total permit fees across building, electrical, and plumbing. The permit process from application to approval typically takes 2 to 6 weeks depending on complexity and whether a zoning variance is needed.

This is a complex, multi-trade project that benefits from a general contractor experienced in residential conversions who can coordinate the trades, manage the permit process, and ensure code compliance at every stage. Find experienced renovation contractors through the New Brunswick Construction Network directory at newbrunswickconstructionnetwork.com.