Renovation Mistakes

10 Renovation Mistakes Ottawa Homeowners
Keep Making

Dec 18, 2025 · 7 min read · By Dream Touch Renovations Ottawa

10 Renovation Mistakes Ottawa Homeowners Keep Making
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I have been building and fixing renovations in Ottawa since 2005. The neighbourhoods change. The trim profiles change. The mistakes do not.

Every January my phone rings with the same calls. A homeowner in Barrhaven who hired the lowest bid and got drywall hung over rotten studs. A couple in Westboro who skipped the permit and now cannot sell. A family in Orleans who poured a major budget into a kitchen and forgot to plan an outlet for the coffee bar.

Here are the ten I see most often. If you are about to start a project, read this first. It will save you more money than any flooring upgrade ever did.

1. Hiring the cheapest quote

Three quotes come in: a low one, a middle one, and a high one. The homeowner picks the lowest because it looks like the same scope on paper.

It is not the same scope. The low bidder left out the plumbing rough-in for the island. He budgeted builder-grade cabinets when you wanted shaker. He skipped the BCIN-stamped drawings because he plans to "wing it." Six weeks in, you get the change orders. By the time you finish you have blown past the high quote and you are three months late.

The middle bid was the honest one. We see this exact pattern eight or nine times a year.

2. No written contract with a real scope

"He's a friend of my brother. We agreed on a number." That is the sentence that starts every legal call I have ever taken.

A real contract names the contractor's legal business name, lists materials by brand and model, breaks the price into deposit and progress draws, sets a start and finish date, and references the permit number. If your paperwork is a one-page handshake on letterhead, you have nothing.

3. Skipping the design phase

People want to "save money" on design. They tell the contractor verbally what they want. The contractor builds what he heard. Two months later the homeowner walks in and says "this is not what I pictured."

That is an expensive mistake on a kitchen and a far larger one on an addition. A proper design phase with elevations, electrical layout, and finish schedules costs less than one change order.

The cost of skipping drawings

One change order to relocate a kitchen island after rough-in costs far more than the drawings that would have caught it in the first place. Pay for the design up front and you skip the change order entirely. Math is not subtle.

4. Ignoring the permit

Ottawa Zoning By-law 2008-250 and the Ontario Building Code do not care if your project "is just cosmetic." If you move a wall, add a bathroom, finish a basement with bedrooms, or change the electrical panel, you need a permit. The minimum is $117. The cost of getting caught is the demolition and rebuild bill plus the legalization fee.

I have seen Stittsville homeowners pay a second time to legalize a basement they had already finished without paperwork. The deal fell out of escrow because the buyer's lawyer pulled the permit history.

5. Picking trends over function

Open shelving in a kitchen looks great on Pinterest. In a real Ottawa house with two kids and a dog, it collects grease and dust. The homeowner replaces it with cabinets in year three.

The same goes for all-white kitchens with no contrast, brass fixtures that show every fingerprint, and barn doors on bathrooms that do not seal sound or smell. Trends date in five years. Function does not.

6. Picking finishes after demo starts

Tile takes 4 to 6 weeks to arrive in Ottawa for anything beyond stocked items. Cabinets are 8 to 14 weeks. Custom millwork is 10 to 16. If you start demo before your finishes are ordered and on site, your project will sit. Mine never do, because we do not break the wall until the materials are in our shop.

7. Underestimating the budget by ignoring the boring stuff

The shiny line items are easy. Cabinets, counters, tile, lighting. The boring ones are the ones that blow the budget:

Add roughly 15% to whatever number you have for these. On a major renovation that is a meaningful sum most homeowners forget to carry.

8. Not setting up a real communication rhythm

Texting the contractor at 9pm with random questions does not work. He will miss something. So will you.

On every job we run, we set a weekly walk-through, same day and time. Decisions get made standing in the room with the drawings, not over text. The homeowners who do this finish on time. The ones who do not, do not.

9. Ignoring lead times and Ottawa winter

An exterior project that starts in late October is going to hit the November rain and December snow. Concrete pours need 5 degrees and rising. Roofing membrane needs 10. Stucco needs 5 days of dry weather. If your contractor says he can pour your addition slab in mid-December, ask him how. The honest answer is "with a heated tarp and an added cost for cold-weather measures," and most people quoting cheap will not tell you that.

10. Choosing the wrong project for the house

A luxury-budget kitchen in a modest Findlay Creek bungalow is not coming back at resale. A second-storey addition on a slab-on-grade in Manotick may not be supportable without underpinning that adds substantially to the scope. A coach house on a Hintonburg lot needs to clear the rear-yard setback rules in the by-law before you spend a dollar on design.

The right project for your house and your block is the one a 20-year contractor and a BCIN designer can both stand behind. We do that conversation for free in your kitchen. It saves people from the wrong project five times a year, easy.

The best money you ever spend on a renovation is the money you spend before the first sledgehammer swings.

The pattern under all ten

Every one of these mistakes shares a root: the homeowner moved too fast at the start to save time, and the project lost months on the back end fixing it.

The fix is not complicated. Hire a contractor who does design, permits, and build under one roof. Get a real contract. Pay for the drawings. Order materials before demo. Set a weekly meeting. Add 15% to the budget. Pull the permit.

Two more I see in March every year

While I am here, two bonus mistakes that bear mentioning because they spike every spring once the snow goes.

Picking flooring without thinking about subfloor levelness. A 1950s bungalow in Centretown is not flat. A 1970s side-split in Nepean is not flat. Engineered hardwood at 7 inches wide will telegraph every dip and lump. The remedy is leveller compound, which adds a per-square-foot cost on top of the flooring quote. Cheap quotes assume the floor is flat. They are wrong about half the time.

Specifying lighting at the rough-in stage instead of after the design is done. Rough wiring locks fixture positions on day 14 of the build. The actual fixtures get picked on day 60. By then the homeowner has fallen in love with a long horizontal sconce that does not fit where the box was placed. Now you are patching drywall.

Pick the fixtures first. Have your designer dimension every box on the electrical drawing. Then rough.

What to do this week if you are about to start

If your project starts in the next 60 days, run through this list before signing anything else.

  1. Verify the contractor's corporation in the Ontario Business Registry
  2. Get a Certificate of Insurance directly from the broker
  3. Confirm the BCIN designer's number with the Ministry
  4. Read the contract and circle every undefined term
  5. Ask for the permit number and confirm it on MyServiceOttawa
  6. Order all materials before demo starts
  7. Set a weekly walk-through, same day, same time
  8. Photograph everything before, during, and after
  9. Keep a written log of every change order with cost and reason
  10. Hold back 10% until substantial completion is signed off

If you do all ten, you will avoid 90% of the calls I take in January. Need help thinking through your project before you start? Reach out. We will tell you straight.

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