One of the first questions homeowners ask before starting a project is:
“What is this actually going to cost me?”
The problem is you’ll find wildly different answers online. Some websites say $20,000. Others say $250,000. Neither is helpful without context.
The real answer is that renovation costs depend on the size of the project, the age of the home, the finishes you choose, and the amount of structural work required. A kitchen update and a full interior overhaul are completely different projects even though both fall under the term renovation.
For an instant estimate, Ontario homeowners can use our online renovation price estimator to get a rough planning range so they know what level of project is realistic for their budget.
Average Renovation Cost Per Square Foot (Ontario)
In Southern Ontario, most professional projects typically fall into this range:
$90 – $250+ per square foot
Here’s what that usually means:
| Renovation Level | Typical Cost |
|---|---|
| Cosmetic updates | $90 – $130 / sq ft |
| Mid-range renovation | $130 – $180 / sq ft |
| High-end renovation | $180 – $250+ / sq ft |
Older homes in Brantford, Hamilton, and surrounding communities often land toward the higher end because electrical, plumbing, insulation, and framing corrections are frequently discovered once walls are opened.
What Actually Affects Renovation Cost?
Home renovations are not priced like retail products. Contractors aren’t simply charging for materials. The real cost comes from what must happen behind the walls.
Age of the Home
Homes built before the 1990s often require:
- electrical updates
- plumbing changes
- insulation corrections
- framing adjustments
A newer subdivision house is usually far more predictable than an older property.
Structural Changes
Moving walls is one of the biggest cost drivers.
Opening a kitchen into a living room or reworking layouts during full home renovations changes structural support requirements, often requiring beams, engineering review, and permits.
Projects that involve structural changes quickly move beyond cosmetic work into construction.
Finishes and Materials
Finishes dramatically impact pricing.
Cabinetry, tile, plumbing fixtures, flooring, and countertops all vary widely in cost. This is why kitchen renovations can range from a moderate project to a major investment depending on customization and layout changes.
Permits and Planning
Proper planning actually saves money.
Permit drawings, inspections, and coordinated scheduling prevent expensive mid-project changes. This becomes especially important with home additions, where zoning rules, structural drawings, and foundation work must all be approved before construction begins.
Typical Renovation Costs by Project Type
Below are realistic Ontario ranges homeowners typically see.
Kitchen Renovations
Typical Cost: $25,000 – $80,000+
The kitchen is usually the most expensive room per square foot because it combines cabinetry, electrical, plumbing, appliances, and finish carpentry in one space.
Projects commonly include:
- cabinet replacement
- countertops
- lighting upgrades
- electrical changes
- layout modifications
Because kitchen renovations connect multiple trades, layout changes tend to impact pricing more than material choices.
Basement Renovations
Typical Cost: $40,000 – $100,000+
Basement renovations are unique because you’re often creating livable space where none existed before. Costs vary depending on whether you are adding:
- a family room
- bathroom
- legal bedroom
- separate suite
A finished basement increases usable square footage and often becomes one of the most used areas in the home.
Home Additions
Typical Cost: $120,000 – $350,000+
Home additions function like building a new structure connected to your existing house. They typically include excavation, foundation work, framing, roofing, insulation, electrical, and HVAC installation.
Many families choose this option when they need more space but want to stay in their neighborhood.
Accessory Dwelling Units (ADUs)
Typical Cost: $140,000 – $300,000+
Accessory dwelling units (ADUs) create a fully independent living space on the same property. Homeowners often build them to house relatives, accommodate adult children, or generate rental income.
Because they operate as separate living spaces, they include kitchens, bathrooms, heating systems, and full permit approval.
Full Home Renovations
Typical Cost: $150,000 – $400,000+
Full home renovations combine multiple rooms and systems into one coordinated project. These projects often include kitchens, bathrooms, flooring, electrical upgrades, layout adjustments, and structural work all completed together.
Homeowners usually choose this when they like their location but their current layout no longer fits their needs.
Why Quotes Vary So Much Between Contractors
Many homeowners receive estimates that are tens of thousands apart. This usually comes down to scope clarity.
Lower quotes often exclude:
- permit allowances
- structural considerations
- realistic material budgets
- project management time
Higher quotes usually reflect a full project cost from the beginning, reducing surprises during construction.
The Hidden Costs Homeowners Don’t Expect
Budget issues rarely come from finishes. They usually come from conditions discovered during demolition:
- outdated wiring
- plumbing problems
- structural repairs
- past DIY work
This is why thorough planning and inspection before construction begins matters more than most people realize.
Planning Your Budget the Smart Way
Before contacting contractors, it helps to determine a realistic project range so design decisions align with your budget from the beginning.
A good starting point is using the renovation price estimator tool to understand approximate costs before scheduling an on-site walkthrough.
Planning Your Project
A renovation is a major investment, but it’s also one of the most effective ways to improve how your home works for your daily life. The projects that run the smoothest are the ones where expectations, scope, and budget are aligned early.
Once you have a rough budget range, the next step is reviewing your space and turning ideas into a realistic plan. Many homeowners begin by using our renovation price estimator to map out a starting point, then schedule a walkthrough to discuss layout options, timelines, and priorities in more detail.
If you’re ready to start planning, the team at LRC Construction can review your home, explain what’s realistic for your budget, and outline a clear path forward. You can request a free consultation here and we’ll help you understand what your project would involve before any work begins.