Home Additions in Cornwall, Ontario
Services
Expand Your Home Without Moving
If your home feels too small but you do not want to move, a home addition can give you the extra space you need without leaving the place you love. You can move to another bedroom, a bigger living room, more kitchen space, or a main-floor suite. We can take care of it.
We design home additions that fit your current home and look like they were always part of it. Our team handles the design, permits, and construction for home additions in Cornwall, ON, so you do not have to worry about the details.
Services
Types of Home Additions We Build
Add a bedroom, expand your living room, or make your dining area bigger, so your home feels more comfortable day to day.
Create more space above your existing home, which is a wise choice when your yard is small, but you still need extra room.
As a garage conversion contractor, we build new attached or detached garages or convert your current garage into usable space, such as an office, studio, or hangout room.
Sunroom additions add a bright space with lots of windows that let you enjoy the view and natural light while staying protected from the weather.
Create a private addition to a house with a bedroom, bathroom, and sitting space for parents, adult kids, or long-term guests.
As an ADU contractor, we build a small, fully independent home on the same lot as your main house — an excellent option for family, guests, or extra rental income.
About us
Meet Our Team
Why Us
Our Home Addition Process
- Design & Feasibility Assessment
We visit your home, talk about the space you need, and look at how the new area can connect to the existing house. Then we put together a simple concept plan and a rough price range, so you can see if it feels like the right move before you commit.
- Permits & Local Building Code Compliance
After you approve the design, we prepare the drawings and paperwork needed for permits in Cornwall, ON. We submit everything to the city, respond to questions, and make sure the home extensions meet Ontario building codes and local requirements.
- Construction & Project Management
Once permits are approved, our crew starts building. We schedule the trades, keep you updated, and do our best to keep the site as clean and organized as possible during the work. At the end, we walk through the new space with you, make any minor touch-ups, and make sure it feels ready to use. We only call it done when you are 100% satisfied. A three-year warranty backs all our home addition services.
Millennial Contracting has partnered with 
Home renovations can come when you least expect them.
As a family, we understand that you can’t always afford to pay for large expenses to your home when you need them the most.
Financing may be a better option for your next home renovation.
Why Us
Why Cornwall Homeowners Choose Millennial Contracting
Homeowners in Cornwall, ON, want high-quality home extensions that look natural with the rest of the house. That is what we focus on. We live and work here, so we know local house styles, lot sizes, and weather, and we use that knowledge to plan projects that fit your street and your budget perfectly. Many people first call us for home renovation services in Cornwall, ON, and then stay with us when they are ready for a larger addition or condo renovation project.
We do not push generic layouts. Instead, we sit down with you, discuss your needs in detail, and make it happen. From there, we design custom home additions that feel like they have always been part of the house.
If your home is starting to feel cramped or no longer works for you, reach out to the best local home addition contractors. Tell us what kind of space you are missing, and we will make sure you get exactly what you need.
FAQ
Frequently Asked Questions
What Are the Top Tips for a Home Addition?
How Much Does a Home Addition Cost?
Costs vary widely by size, location, finishes, and complexity (foundation, plumbing, electrical, rooflines). A basic addition is typically cheaper per square foot than a high-end suite or a second-story build. The best next step is a site-specific estimate after a quick design and scope review.
How to Put an Addition on Your House?
Begin with a needs assessment and rough budget, then consult a contractor or designer to confirm feasibility and create plans. Next comes permitting, detailed pricing, scheduling, and construction (site prep, foundation, framing, MEP rough-ins, insulation, drywall, finishes, and final inspections). If you want a guided end-to-end process, Millennial Contracting can help coordinate design, permits, and build execution.
Where to Start a Home Addition?
Contact us
Get in Touch With Our Home Addition Experts
A home addition is the perfect solution to gain extra space without the hassle of moving. Whether you need a new bedroom, a home office, or an expanded living area, our team specializes in designing and building additions that seamlessly blend with your home’s existing architecture. If you are ready to expand your living horizons, reach out to our experts and let us help you bring your vision to life.
Reach out to us! We’re excited to help turn your ideas into reality.
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