Do I need a permit to pour a concrete pad for a generator or hot tub in Moncton NB?

For most generator or hot tub pads in Moncton, you likely don't need a building permit for the concrete pad itself — but the electrical and plumbing connections almost certainly do require permits.

This is an important distinction. The City of Moncton generally does not require a building permit for a small concrete pad (under 108 square feet) that is not attached to the house and does not involve structural footings below grade. A typical generator pad or hot tub pad falls into this category. However, you should always confirm directly with the City of Moncton's Building Inspection department before you pour, because lot size, zoning, proximity to property lines, and whether the pad is attached to the structure can all change the answer.

The electrical work is a different story entirely. A standby generator requires a transfer switch and electrical connection that must be permitted and inspected by a licensed electrician under the NB Electrical Inspection program. A hot tub requires a dedicated GFCI-protected circuit, bonding, and an inspection before the tub can be energized. These are non-negotiable — unpermitted electrical work on a generator or hot tub creates serious fire and electrocution hazards and will cause problems when you sell your home.

For the concrete pad itself, here's what matters in Moncton's climate. A generator or hot tub pad should be a minimum of 4 inches thick, poured on a compacted gravel base of at least 6 inches. Use air-entrained concrete (25-32 MPa) — this is essential for any outdoor pad in NB given the 150+ freeze-thaw cycles per year. Non-air-entrained concrete will begin spalling and scaling within a few years. A hot tub pad deserves extra attention to thickness — a filled two-person hot tub can weigh 3,000 to 5,000 pounds, so 5-6 inches of reinforced concrete on a solid base is a smarter spec than the bare minimum.

Setback requirements do apply to the pad's location, even without a building permit. In Moncton, accessory structures and pads must typically be set back a minimum distance from property lines — commonly 1.2 metres (4 feet) from side and rear lot lines, though this varies by zoning district. Check with the City of Moncton Planning and Development department or review your property's zoning before you decide where to pour.

One practical tip: pour the pad now during the May-October window while conditions are ideal. If you're planning a late-season pour in September or October, watch nighttime temperatures — Moncton can see near-freezing nights by mid-October, and fresh concrete needs protection if temps drop below 10°C. Apply a penetrating silane/siloxane sealer once the pad has cured for 28 days to protect it from Moncton's winters and any de-icing salt that might drift from nearby surfaces.

For the concrete pad itself, this is a manageable DIY project if it's under 2 cubic yards. For anything larger, or if you want it done right the first time, New Brunswick Concrete can match you with a local Moncton contractor for a free estimate — find concrete professionals in your area through the New Brunswick Construction Network directory at newbrunswickconstructionnetwork.com/directory?trade=concrete.