Do I need a permit for a home addition in Moncton NB?

Yes — a building permit is absolutely required for any home addition in Moncton, no exceptions. An addition extends your building's footprint, involves structural framing, modifies the building envelope, and typically adds electrical and sometimes plumbing. All of these trigger mandatory permitting under the National Building Code as adopted in New Brunswick.

In Moncton specifically, you apply through the City of Moncton's Building Inspection Department. You'll need to submit a completed application, site plan showing your property boundaries and the proposed addition location relative to setbacks, and construction drawings showing floor plans, elevations, and structural details. Depending on the size and complexity of the addition, you may also need engineering drawings stamped by a professional engineer registered in New Brunswick. Permit fees in Moncton are based on project value — budget $200–$600 for a typical addition permit, though larger projects will cost more.

Beyond the building permit from the city, your addition will also require TSANB inspections for any electrical rough-in and any new plumbing. The Technical Safety Authority of NB handles all electrical, plumbing, and gas trade licensing and inspection in the province — this is provincial law, not a municipal extra. Your electrical and plumbing subcontractors must hold active TSANB trade licences, and they'll pull their own permits and arrange inspections as part of the job. Make sure your general contractor coordinates this — it's not uncommon for homeowners to be surprised when a framing inspection is passed but electrical rough-in sits waiting for a TSANB visit before drywall can go up.

Your addition must also respect Moncton's zoning setbacks before a permit will be issued. The standard residential setbacks in Moncton are approximately 6 metres from the front property line, 1.2 metres from side property lines (more for corner lots), and 7.5 metres from the rear property line — but your specific lot's zone may differ, so confirm with the planning department before designing. Building right to the setback line is common, but it requires accurate surveying. If your property survey is old, the city may require an updated survey or real property report before approving.

Skipping the permit is never worth the risk. Unpermitted additions cause real problems at resale — buyers' lawyers and home inspectors flag unpermitted work, and sellers are often required to either demolish, remediate, or apply retroactively for permits at far greater cost and disruption than simply pulling them during construction. Your home insurance may also decline a claim if unpermitted work is involved in the loss. The permit process exists to ensure the structure is built safely, and for an addition — which involves new footings, framing connections to the existing home, and new electrical — that oversight is genuinely valuable.

Practical tip: Start the permit process well before you want construction to begin. Moncton's building department processes permits in 4–8 weeks for typical residential additions, and you cannot legally start construction (not even footing excavation) until the permit is in hand. Begin your design work in winter if you want to be ready to build in May or June.

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Looking for experienced contractors? The New Brunswick Construction Network connects homeowners with qualified professionals:

• Thirty Four Renovations
• Gionetterenovations