How much should I expect to pay for a 3-car garage with workshop space in Sussex New Brunswick?

A three-car garage with dedicated workshop space in Sussex, New Brunswick typically costs between $75,000 and $130,000, depending on size, foundation type, level of finishing, and whether the workshop area is insulated and heated. This is a substantial project that requires careful planning, a building permit, and an experienced contractor who understands NB's foundation and structural requirements.

The most common layout for a three-car garage with workshop space is a 36x30 or 36x36 footprint, which provides three full vehicle bays plus an enclosed workshop area of 150 to 300 square feet along the back or side wall. Some homeowners opt for a wider 40x30 layout to keep all three bays generous while reserving a full 10-foot-deep workshop zone across the back. At the base level, a standard three-car detached garage in NB runs $60,000 to $95,000 for the shell — foundation, framing, roofing, siding, overhead doors, service door, electrical, and concrete slab. The workshop component adds cost because it typically requires additional electrical circuits, better lighting, insulation, interior finishing, and potentially a heating system.

For the workshop portion specifically, budget for the following additions on top of the base garage cost. Insulation for walls and ceiling in the workshop area runs $2,000 to $4,500 depending on whether you use batt insulation (R-20 walls, R-40 ceiling) or closed-cell spray foam. Interior drywall finishing adds $3,000 to $6,000 for the workshop walls and ceiling. Electrical upgrades for a proper workshop — including a sub-panel, 2-3 dedicated 20-amp circuits for power tools, 240V outlets for a welder or air compressor, and LED shop lighting — typically cost $2,500 to $5,000 in NB. If you want the workshop heated year-round, a propane or natural gas unit heater adds $1,500 to $3,500 installed, and you will want the insulated overhead doors ($1,200-$2,500 each) rather than the basic non-insulated versions.

Sussex sits in the Kennebecasis River valley in southern New Brunswick, where frost depth reaches 4 to 4.5 feet (1.2 to 1.4 metres) below grade. Your garage foundation — whether full frost walls or piers — must extend below this depth, and the concrete slab needs a 6-mil poly vapour barrier underneath and proper drainage grading away from all sides of the building. The snow load in the Sussex area is approximately 2.4 to 3.0 kPa, which means roof trusses must be engineered to carry those loads plus any potential drift accumulation. For a three-car garage, you are looking at a roof span of 30 to 40 feet, which almost certainly requires engineered roof trusses rather than site-built rafters — factor in $3,000 to $6,000 for engineered trusses on a garage this size.

A realistic budget breakdown for a 36x30 three-car garage with insulated, finished workshop in Sussex looks something like this: foundation and slab ($12,000-$20,000), framing and trusses ($15,000-$25,000), roofing ($5,000-$10,000), siding ($5,000-$10,000), three overhead doors ($3,500-$8,000), service door ($500-$1,000), electrical with workshop circuits ($3,000-$6,000), insulation and drywall for workshop ($5,000-$10,000), heating system ($1,500-$3,500), and contractor overhead and profit. These numbers add up to that $75,000 to $130,000 range, with the lower end representing a partly finished workshop and the upper end representing a fully insulated, heated, and well-equipped workspace.

Timing matters in Sussex. Plan to break ground in April or May so the foundation can be poured when temperatures are consistently above 5 degrees Celsius for proper curing. A well-organized contractor can have a garage of this size fully enclosed before winter, with interior finishing continuing through the colder months if needed.

A project of this scale is not a DIY undertaking — the foundation, framing, roofing, and electrical all require professional skills and permits. Get three or more quotes from experienced builders to compare scope, timeline, and pricing. New Brunswick Garages can match you with local garage contractors for free estimates on your project.