Basement Renovation Company
At Ontario Basement, we specialize in basement permits, design, and construction to help you build a fully compliant legal basement apartment in Ontario.
Turning your basement into a legal unit is one of the smartest investments you can make. With rising rental demand across Ontario, a legal basement apartment can generate consistent income while increasing your property value.
Full-Service Renovation
for Premium Spaces
We provide complete renovation services tailored for rental properties. From design to execution, we ensure your space is modern, functional, and ready to impress tenants.From concept to completion, we enhance your rental property’s appeal and value—delivering results that reduce vacancy and boost returns.
Residential
Renovation
Design
& Planning
Commercial
Renovation
Turnkey
Renovation
Function Meets Style
Luxury & Legal Basement Solutions.
Transform your unused space into a premium, code-compliant basement that adds comfort, style, and value to your home. Our expert team delivers tailored solutions with high-end finishes and full municipal approval.
Designed for Ontario Living. Built to Impress.
From cozy family dens to luxury rental units, we transform Ontario basements into exceptional spaces. Our focus is style, durability, and maximizing the value of your home.
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The Ontario Basement Advantage
Speed & Quality
One-Stop Shop
Best Prices
High Ranking
Warranty
Speed & Quality
Basement Finished in 2–3 Weeks
Thanks to our extensive experience in basement renovation and finishing, most projects are completed within 2–3 weeks on average. Custom features or permit requirements may extend timelines slightly.
Importantly, speed never compromises quality. That’s why homeowners across Toronto, Mississauga, Oakville, the GTA, and beyond trust our expert team for reliable, high-quality basement transformations.
One-Stop Shop
Huge 3000 Square Feet Showroom
One of our key advantages is our spacious 3000 sq ft showroom, designed to save you 2–3 hours by streamlining material selection and design planning.
In just 45 minutes, you can explore fully built-out basement spaces and visualize how your underused area can be transformed into something exceptional.
Best Prices
Importers & Manufacturers
Finished Basement is more than just your trusted renovation partner — we also import and manufacture most of the materials we use.
With no middlemen and local Ontario warehouses, we offer faster timelines and lower prices, ensuring your dream basement is always within reach.
High Ranking
Home Stars & Google Heroes
We specialize in basement renovations across Toronto, Mississauga, Oakville, the GTA, and many cities throughout Ontario—transforming underused areas into functional, beautifully finished living spaces with top-quality materials and craftsmanship.
Each project receives our full attention and a personalized approach, ensuring your basement not only meets but exceeds expectations..
Warranty
We give a warranty that our work will be good.
Code-Compliant & Guaranteed Work
All our basement renovations strictly follow the Ontario Building Code and safety standards. Backed by a 5-year warranty, we fix any installation defects at no extra cost—ensuring lasting quality and peace of mind.
Built on Trust.
Driven by Quality.
We believe strong foundations begin with trust — in our process, our people, and our promises. Our skilled team brings years of experience and a commitment to excellence in every detail. From consultation to completion, we ensure complete transparency and reliability. Quality isn’t just our standard — it’s the driving force behind every basement.
Projects Completed
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Successfully transformed over 1,200 basements into premium, rental-ready or livable spaces with precision and style.
Happy Clients
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Homeowners and property investors across Ontario trust us for reliable, high-end basement renovation services.
Years of Experience
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A decade of excellence in designing functional, beautiful, and income-generating basement environments.
Total Sq. Ft. Renovated
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Over 1 million square feet of basement space converted into modern, high-value living areas.
Our Work
They Turned Our Vision into Reality
The Perfect Blend of Quality & Trust
Renovation Completed in Just 2 Weeks!
Your Dream Basement
Basement renovation is
completed in just 2 to 3 weeks.
Our design team carefully plans the transformation of your basement into a stunning home theater. Experienced professionals execute the plan with precision and quality — typically completing the renovation within just 2 to 3 weeks.
Our Clients’ Reviews
Homeowner, Brampton
“Our basement was just storage space before Ontario Basement stepped in. Now, it’s a warm, modern family room we use every day. Their attention to both structure and style made us feel confident throughout the process.”
General Contractor, GTA
“As a builder, I value teams that respect timelines and know their craft. Ontario Basement delivers consistent, structurally sound work without sacrificing design quality. They’re my go-to for basement transformations.”
Real Estate Investor, Mississauga
“I hired Ontario Basement to finish two rental units, and the results speak for themselves. Each space feels polished, livable, and secure — exactly what I needed to attract long-term tenants. Their blend of form and function is unmatched.”
Ontario Basement’s gallery
“An Ontario-based construction professional delivering safe, reliable, and code-compliant building solutions.”
Master Carpenter
“Expert in using power tools and advanced techniques to deliver high-quality, durable, and custom woodwork solutions.”
Ontario Safety & Site Supervisor
“Trained to handle site supervision, hazard prevention, and worker protection, keeping every project safe and on schedule.”
FAQs
What makes Ontario Basement’s services the best?
We combine expert craftsmanship, high-quality materials, and attention to detail to deliver safe, durable, and stylish basement solutions tailored to your needs.
Do you offer both renovation and finishing services?
Yes, we handle everything from complete basement renovations to final finishing touches, ensuring your space is functional, beautiful, and ready to use.
How long does a typical basement project take?
Project timelines vary, but most basements are completed within 4–8 weeks, depending on size and complexity.
Do you provide a warranty on your work?
Absolutely. We offer a workmanship warranty to ensure long-lasting results and peace of mind.
Can you customize designs to match my style?
Yes, our team works closely with you to create a basement that perfectly fits your vision and lifestyle.