What are common renovation mistakes homeowners make in New Brunswick?

The most expensive renovation mistakes NB homeowners make are almost never about choosing the wrong tile colour — they're about skipping permits, ignoring moisture problems, hiring without proper verification, and underbudgeting for older homes where surprises are guaranteed. After seeing hundreds of NB renovations, the same patterns show up repeatedly.

The single most damaging mistake is finishing over existing moisture or structural problems. NB's climate makes this particularly costly. Installing laminate flooring over a damp basement slab, putting up drywall over a foundation wall without proper vapour management, or tiling a shower over an existing cracked substrate — these approaches produce mould, rot, and structural damage within two to five years. In NB, spring snowmelt raises the water table from April through June and drives hydrostatic pressure against every basement wall in the province. Finishing a basement without addressing that moisture first is not a shortcut — it's a guarantee of spending twice.

Not pulling permits is the second-most-common costly mistake. NB homeowners skip permits to save the $200-$500 application fee and avoid the 2-4 week wait. The consequences are severe: insurance claims for damage connected to unpermitted work may be denied, issues at resale are increasingly common as buyers' lawyers request permit histories, and if unpermitted structural, electrical, or plumbing work is discovered, the municipality can require tear-out and redo at your cost. Licensed TSANB tradespeople will pull their own electrical and plumbing permits as a matter of course — if a contractor suggests you can skip it, walk away.

Choosing the cheapest bid is a pattern that ends badly in NB's market as reliably as anywhere. A quote that's 30-40% below the others usually means the contractor is planning change orders to close the gap, is skipping WorkSafeNB coverage to lower overhead, or is using substandard materials. Get three or more quotes for any project over $10,000, compare them at the scope level (not just the bottom line), and ask every contractor to explain what's included and what isn't. The cheapest quote for a $40,000 kitchen renovation might end up costing $60,000 once the change orders arrive.

Underestimating contingency in older NB homes is nearly universal among first-time renovators. Pre-1980 NB homes routinely contain asbestos in floor tiles, pipe insulation wrap, or ceiling texture; knob-and-tube or aluminum wiring that must be updated before finishing; undersized electrical panels; subfloor layers that have been built up over decades and have uneven heights; and insulation levels far below current code. A reasonable contingency for a gut renovation of a pre-1970 home is 20-25% of the project cost — not 10%. Budget for the surprises before they surprise you.

Paying too much upfront remains common in NB despite widespread advice to the contrary. A contractor who demands 40-50% before starting work is either using your money to fund another job or lacks working capital — neither is reassuring. Standard practice is 10-15% at signing, with subsequent payments tied to completed milestones. Always hold back 5-10% until the punchlist — the list of small deficiencies and touch-ups — is fully resolved.

Starting exterior work too early in spring is an NB-specific mistake. Homeowners eager to get moving book siding, roofing, or addition work for April, run into March and April weather — freezing nights, rain, snow squalls — and end up with adhesion failures, material damage, or a delayed start that throws the whole summer schedule off. Exterior work in NB should start no earlier than mid-May, when overnight temperatures are reliably above 5°C. Be sceptical of any contractor who promises April exterior work on a firm timeline.

Finally, not having a written contract before work starts remains astonishingly common for smaller projects. Verbal agreements about scope, price, and timeline lead to disputes that are difficult to resolve without documentation. Any renovation over $5,000 warrants a written contract specifying scope, materials, payment schedule, change order process, and warranty terms.

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

• Thirty Four Renovations
• Gionetterenovations