What does garage build double detached typically cost in New Brunswick?

A detached double garage in New Brunswick typically runs $18,000-$35,000, with most homeowners spending around $25,000-$28,000 for a standard 24x24 foot structure with basic finishes.

Size and foundation drive the biggest cost variations. A basic 20x20 foot garage on a concrete slab starts around $18,000-$22,000, while a larger 24x28 foot garage with full foundation and workshop space can reach $30,000-$35,000+. The standard 24x24 size hits the sweet spot for most families — enough room for two vehicles plus storage without breaking the budget.

Your foundation choice significantly impacts pricing. A concrete slab foundation costs $3,000-$5,000 less than a full foundation with basement space underneath. However, New Brunswick's 4+ foot frost line means any foundation must extend well below grade regardless. Many homeowners opt for the full foundation since the excavation work is already happening.

Material and finish selections create wide price swings. Basic vinyl siding and asphalt shingles keep costs down, while board-and-batten siding or metal roofing adds $3,000-$6,000. Insulation and electrical rough-in (required for door openers, outlets, and lighting) typically adds $2,500-$4,000. A concrete floor with proper vapor barrier runs $2,000-$3,500 depending on size.

Permitting and inspections are mandatory costs to factor in. You'll need a building permit from your municipality (like Moncton, Saint John, or Fredericton) or your Regional Service Commission if you're in a rural area. Permit fees typically run $150-$400. If you're adding electrical service, you'll also need a wiring permit from NB Power (1-800-615-0522) and final inspection from Technical Inspection Services.

Professional installation is strongly recommended — garage construction involves foundation work, framing, roofing, and often electrical connections that require proper permits and inspections. A qualified contractor ensures your garage meets National Building Code requirements and handles the permit process efficiently.

Start by getting quotes from 2-3 licensed contractors in your area and confirm they're registered with WorkSafeNB. Most can provide a detailed estimate after seeing your property and discussing your specific needs for storage, workshop space, and finish preferences.