Planning · 8 min read
Mistakes first-time renovators make
The mistakes that cost first-time Canadian renovators the most money, why each one happens, and what to do instead.
None of these are mistakes of taste. They are structural mistakes about money and sequence, and they happen to careful people on their first project because the consequences arrive weeks after the decision.
1. Budgeting to the quote instead of to the range
The most common and most expensive mistake. A contractor quotes $40,000, the homeowner has $42,000, and it feels like there is room. There is not, because a renovation quote is a price for the work that is visible today.
What to do instead: decide your total budget first, then work backward to the scope it buys, holding back a contingency before you commit. On an older home or a project that opens up walls, that buffer needs to be a real percentage, not just rounding the quote up.
2. Not holding a contingency, or spending it early
A contingency is not a slush fund for upgrading the tile once things are going well. It is the money that covers what is behind the wall: old wiring, failed subfloor, a plumbing stack that is not where the drawings said.
What to do instead: set it aside as untouchable, and size it to the risk. A cosmetic project in a newer home needs less than a structural change in a pre-1960 house. Spending it in week two on finishes is how a project ends up unfinished.
3. Choosing the cheapest quote without comparing scope
Three quotes that differ by $15,000 are usually not three prices for one job. They are three different jobs. The cheapest one frequently excludes disposal, permit fees, painting, trim, or uses allowances so low they guarantee a change order later.
What to do instead: put the quotes side by side line by line and find the line the cheap one is missing. Then ask that contractor to price the missing line. The gap usually closes, and sometimes it inverts.
4. Changing your mind after the work starts
Every decision costs more once it is a change rather than a plan. Moving a light switch is trivial on paper, cheap before drywall, and expensive after tile.
What to do instead: finalize selections before demolition, not during it. Order long-lead items early. Accept that the last ten percent of decisions is where most of the schedule slips, and make those decisions first rather than last.
5. Assuming a permit is not needed because nobody mentioned it
Permits are the failure that surfaces years later, when you sell and a buyer's lawyer asks for the closed permit you never opened. Unpermitted structural, electrical or plumbing work can hold up a sale and can affect an insurance claim.
What to do instead: ask your municipality directly, before work starts. It is a free phone call. Do not accept "we do this all the time" from a contractor as an answer about your specific property, and be aware that in most provinces nobody licenses general contractors at all, so a confident manner is not a credential.
The one that is not on the list
Paying too much per square foot is rarely what ruins a first renovation. Running out of money before the work is finished is. Those are different problems, and only the second one leaves you living in it.