How much does above garage suite cost in New Brunswick?

Converting space above a garage into a suite in New Brunswick typically runs $40,000-$120,000+, depending on the existing structure and your finishing level. This wide range reflects whether you're working with a bare garage or one that was pre-built with suite potential.

Structural assessment comes first — many older garages weren't designed for residential loads. You'll need an engineer to evaluate floor joists, foundation capacity, and overall structural integrity ($800-$1,500 for assessment). If major reinforcement is needed, add $15,000-$35,000 to your budget. Newer garages built in the last 15 years are more likely to handle the conversion without extensive structural work.

The building permit process varies by location. In Moncton, Dieppe, Fredericton, or Saint John, contact your municipal planning department directly. For rural areas, you'll work with your Regional Service Commission — RSC 7 (Southeast/Plan360) covers rural Moncton area at (506) 533-3637, while RSC 11 (Capital Region) handles Fredericton rural at (506) 453-2956. Permit fees typically run $300-$800, but the zoning compliance check is crucial — not all areas allow secondary suites.

Electrical, plumbing, and heating represent major cost centers. All electrical work requires a licensed contractor and NB Power wiring permit (1-800-615-0522). Budget $8,000-$15,000 for electrical rough-in including new panel capacity. Plumbing rough-in for a bathroom and kitchenette runs $6,000-$12,000 through a TIS-licensed plumber. Heating typically means extending your existing system or installing a separate heat pump ($4,000-$8,000).

Fire safety requirements under the National Building Code add significant costs but aren't optional. You'll need fire-rated separation between the garage and suite (minimum 45-minute rating), which often means resilient channel and multiple layers of drywall. Separate entrance requirements, egress windows in bedrooms, and interconnected smoke/carbon monoxide alarms throughout both levels are mandatory. This fire safety work typically adds $8,000-$15,000 to the project.

Insulation and weatherproofing are critical in New Brunswick's climate. Most garages have minimal insulation, so budget $3,000-$6,000 for proper insulation to R-20+ walls and R-40+ ceiling. With our freeze-thaw cycles and coastal moisture (especially near Saint John or Moncton), proper vapor barriers and air sealing are essential.

Finishing costs vary dramatically — basic drywall, laminate flooring, and builder-grade fixtures might run $15,000-$25,000, while higher-end finishes can easily double that. Kitchen and bathroom fixtures alone can range from $8,000 for basic to $20,000+ for quality finishes.

Timeline considerations: Structural work and major systems happen spring through fall due to our climate. Interior finishing can continue through winter, but plan 4-6 months total for a complete conversion.

Start by confirming zoning compliance with your local authority, then get that structural assessment. These two steps will determine whether your project is feasible and help refine your budget before you commit to design work.