Sunroom Addition Contractor in Cornwall, Ontario
Services
Transform Your Home With a Custom Sunroom
Services
Types of Sunrooms We Build
These rooms have insulated walls and roofs, plus high-performance glass so that you can heat and cool them like the rest of the house. You get a bright, usable space in the middle of winter and on hot summer days.
Best for spring, summer, and fall, they block rain, wind, and bugs while still feeling very open to the backyard. You get lots of fresh air and light without being fully exposed to the weather.
This style has a simple roof that slopes in one direction and ties neatly into the existing house. It works well for smaller homes or spots where you want to keep a low profile.
A gable roof has two sloping sides that meet at the peak. It adds extra height and makes the room feel bigger and more open, which looks great on many traditional homes.
If your yard or house layout is tricky, we can design a unique sunroom just for you. Size, shape, windows, and features are carefully planned around your budget, needs, and property, providing a 100% fit.
About us
Meet Our Team
Why Us
Our Sunroom Construction Process
Our sunroom construction process is streamlined. It starts with a simple conversation and an in-person visit, where we look at your yard or patio, talk about how you want to use the space, and check what the house can safely support. After that, we work on the design, handle the permit drawings, and set a clear timeline so you know how long each stage should take.
While our sunroom builders do their job, we keep you updated, keep the area as tidy as the work allows, and explain what is happening next. At the end, we walk through the new sunroom with you, check the details, and make sure it feels ready to enjoy. We call the job done only when you’re delighted with the result.
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 Homeowners Choose Us for Sunroom Construction in Cornwall, ON
Sunrooms need good planning so they look right, feel solid, and look like a natural part of your home. Our sunroom builders are based in Cornwall, ON, and know how the local weather affects light, heat, and snow load, so we design your room with that in mind. Every sunroom is designed around your needs, budget, and property, so it fits perfectly.
Many people first call us about a home remodel, ADU construction in Cornwall, ON, garage renovation, condo remodeling, or bigger home extensions, and then decide to add a sunroom once they see what is possible.
If you feel like your home needs a sunroom to feel more like yours, get in touch, tell us how you imagine using it, and we will talk through design ideas, timing, and budget. But wait! What if you already have a sunroom that no longer works for you? No worries! We can help you with the best sunroom renovation and sunroom remodeling services, too!
We’re a trusted local sunroom contractor in Cornwall, ON, and we back our reputation with high-quality work and numerous positive reviews!
FAQ
Frequently Asked Questions
How much does a sunroom addition cost?
How do you plan a sunroom addition?
Planning a successful sunroom addition starts with defining how you’ll use the space year-round or seasonally. A professional sunroom contractor helps guide decisions such as:
Placement and sun exposure
Structural integration with the existing home
Insulation, windows, and roofing options
Permit requirements in Cornwall, Ontario
Proper planning with skilled sunroom builders helps avoid costly changes later and ensures a smooth construction process.
What is the best foundation for a sunroom?
What is a good size for a sunroom addition?
A good size for a sunroom addition depends on available space and how the room will be used. Most homeowners choose sunroom additions between 120 and 300 square feet, which provides enough room for seating, dining, or relaxing without overwhelming the home’s layout. Experienced sunroom builders can recommend proportions that balance comfort, cost, and architectural harmony.
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Reach out to us! We’re excited to help turn your ideas into reality.
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