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Basement Renovations & Legal Apartments Done Right
Basements made legal, functional, and beautiful in the Durham Region.
Basement Renovations from $30,000 +
Service Overview
At Ramsauer Renovation, we turn underused basements into warm, functional living spaces that add comfort and value to your home. From family rec rooms and home theaters to in-law suites and income-generating legal apartments, we handle every detail.
Most basement renovations in Oshawa and Durham Region range from $40,000 to $100,000, depending on size, finishes, and whether you’re creating a legal secondary suite. We manage permits, fire separation, egress windows, and Ontario Building Code requirements so your new space is safe, compliant, and built right the first time.
Whether you’re in Oshawa, Whitby, Courtice, or the wider Durham Region, our team specializes in:
Basement finishing for growing families
Rental-ready basement apartments
Home gyms, offices, and entertainment spaces
Custom bars, fireplaces, and built-ins
Waterproofing and moisture control for safe, long-lasting basements
Ready to transform your basement?
What Our Clients Say About Their Basement Renovations
"Ramsauer Reno renovated my basement with top notch professional service. We received great quality service and communication quickly and they were easy to work with. Jim and his team were always willing to answer my questions or make a recommendation even after the work was completed. Every aspect of the project was done professionally with great products and great service. They were neat and clean. I have no hesitation in recommending Ramsauer Reno to anyone thinking of renovating their basement or home renovation. We will definitely be using Ramsauer Reno for our next home improvement project!"
Nis Mathi - Google Review
"Wasn't sure what to expect as a first time home owner and first time going through a big renovation job like this one. Jim and his team made this a seamless experience from the very beginning all the way through to the very end. They finished our entire basement and added a new bathroom inside of 3 weeks yielding exceptional results at a very good price. Other contractors wanted to charge an arm and a leg while these guys respected our budget and provided an excellent new living space for us! Thanks Ramsauer team!"
Emmanuel Lopez - Google Review
Frequently asked questions
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