“How can one contractor be $50,000 — sometimes even $100,000 — less than another for the same renovation?”
If you’re comparing quotes right now, you’re trying to be responsible. Renovation is a serious investment. You want to make a smart financial decision. You don’t want to overpay.
That’s reasonable.
But here’s what most homeowners aren’t told:
Renovation quotes vary because they are built on different assumptions — not because one contractor has secret efficiencies or access to cheaper materials.
And in older Toronto homes, those assumptions can dramatically change the final cost.
If you haven’t already, you may also want to read our companion article: 👉 Fixed Price Renovations Sound Safe — But Are They?
It explains how contract structure directly affects pricing.
It’s Not Just the Price — It’s the Scope
A “fixed price” is not actually a fixed price.
It is a fixed scope of work.
The number is only fixed for what is clearly written into the contract. If something is not included in that written scope — even if it feels obvious — it is not part of the fixed price.
In a 100-year-old Toronto home, defining scope perfectly at the beginning is extremely difficult. Much of the house is hidden behind plaster, framing, and decades of previous renovations. You can’t fully see wiring conditions. You can’t inspect every structural connection. You can’t confirm the state of buried plumbing or aging drain lines.
Canadian standard construction contracts — including those published by the Canadian Construction Documents Committee (CCDC) — rely heavily on clearly defined scope. That works well in new construction. It is far more complex in renovation.
So when one contractor’s quote is significantly lower than another’s, it usually means the scope has been defined more narrowly — not that the renovation will ultimately cost less.
That distinction matters.
Pricing to Drywall vs Pricing to Completion 🎯
One of the biggest differences between quotes is how far they actually go.
Some contractors effectively “price to drywall.” The structure is framed. The drywall is installed. On paper, it looks complete.
But what about the finishes?
Are cabinetry allowances realistic? Is tile fully specified? Are lighting fixtures included? Is trim detailed? Is flooring priced at a level that reflects your expectations?
If those elements are vague or under-allowed, the quote may look competitive — but it is not pricing the finished home you have in mind.
The lower number isn’t magic.
It’s often an incomplete picture.
Older Homes Rarely Allow Partial Renovations 🔍
Here’s where common sense comes in.
In older Toronto homes, systems are interconnected. You cannot renovate one section — or add an addition — without affecting the rest of the house.
Electrical panels are often undersized. Plumbing stacks may be deteriorated. Drain lines may be original. HVAC systems were not designed for expanded square footage. Insulation levels are inconsistent.
The City of Toronto outlines current building permit and code requirements here: 👉 City of Toronto Building Permits
Yet many quotes focus only on the specific area being renovated — or just the new addition — as if the rest of the home will remain untouched.
In practice, that almost never happens.
When new work ties into old systems, deficiencies surface.
If a quote assumes those systems can remain as-is, that assumption may be what makes it cheaper.
But once demolition begins, reality tends to correct assumptions.
And that’s when costs change.
Why Low Numbers Often Grow 💸
Some contractors underprice intentionally, expecting change orders to recover margin later. Others price optimistically, assuming best-case conditions inside the walls.
Either way, the result is similar.
The number that won the job is not necessarily the number that completes the job.
And by the time adjustments arise, you are already committed.
A quote on paper will not protect you from change if the assumptions behind it were incomplete.
What Should You Actually Pay Attention To? 📊
If you’re comparing quotes, look beyond the total.
Ask:
• Are mechanical systems realistically addressed?
• Is supervision clearly included?
• Are permits and engineering accounted for?
• Are allowances detailed and aligned with your finish expectations?
• Is there transparency in how trades are budgeted?
Two experienced professionals reviewing the same 100-year-old home should not be tens of thousands of dollars apart unless they are making very different assumptions.
The number matters.
But the assumptions behind the number matter more.
Trust the Contractor, Not Just the Quote 🤝
Renovation is not a retail product with a barcode and a fixed shelf price.
It is an evolving process inside a structure filled with unknowns.
No contract — fixed price or otherwise — eliminates the reality that conditions change once work begins. In older homes, something will surface. It always does.
The real protection for a homeowner is not the lowest number on paper.
It’s the integrity and transparency of the contractor managing the project.
When conditions change, will they:
• Clearly explain what was assumed?
• Show what was uncovered?
• Document costs transparently?
• Prioritize long-term performance over protecting a number?
Because when the unexpected happens — and it will — the relationship matters more than the quote.
If you’re exploring a more integrated approach, you can learn more about our structured Design-Build process and how it aligns budgeting and construction from the beginning.
Planning a Renovation? Let’s Review Your Quote Together 📋
If you’re currently comparing renovation quotes and unsure what you’re really looking at, we’re happy to walk through them with you.
We’ll help you understand:
• What is clearly included
• What assumptions are being made
• Where mechanical systems are addressed (or not)
• Whether supervision and management are accounted for
No pressure. Just clarity.
📍 Woodsmith Construction Inc. 80 Redwood Avenue, Toronto, Ontario
📞 416-937-5874
🌐 www.woodsmith.ca/contact-us
Renovation should feel informed and collaborative — not confusing.
Industry & Regulatory References 📚
For homeowners who want to better understand how renovation contracts and building regulations work in Ontario, here are several helpful Canadian resources:
• Canadian Construction Documents Committee (CCDC) – Standard Contract Forms
https://www.ccdc.org/standard-contract-documents/
• City of Toronto – Building Permits & Requirements
https://www.toronto.ca/services-payments/building-construction/building-permits/
• Ontario Building Code Overview
https://www.ontario.ca/page/building-code
These resources reinforce an important reality: construction contracts rely on a clearly defined scope, and building regulations evolve over time. In older homes, both scope clarity and code compliance can become more complex once work begins.
