Basement finishing in Ajax is no longer just about extra space. Today, homeowners focus on building legal basement apartments and income suites. Because of this, basement renovations have become one of the most valuable upgrades.
In addition, features like separate entrances, proper layout planning, and code compliance allow your basement to be used as a rental unit. This creates long-term income potential.
Our team specializes in basement finishing in Ajax, including legal basements, income suites, and full renovations. As a result, you get a space that is modern, functional, and built to generate value.
Your Basement Can Pay for Itself
We serve homeowners in Ajax and across Durham Region, delivering basement finishing services focused on legal compliance, rental income, and modern living. In addition, we specialize in income suite conversions and separate entrance construction.
We build fully legal basement apartments that meet Ontario building codes. This allows you to rent your space safely.
We create private entrances for basement units. This improves rental potential and privacy.
We design layouts specifically for rental income. As a result, your basement becomes more functional and profitable.
We complete full basement renovations including flooring, drywall, lighting, and finishing.
Basement finishing cost in Ajax depends on layout, size, and whether you are building a legal unit. However, income suites can generate long-term rental returns.
Our process ensures your basement renovation is completed efficiently and meets all legal requirements.
Homeowners in Ajax trust us to build basements that increase property value and rental income.
EXCELLENT Based on 39 reviews Posted on Meh STrustindex verifies that the original source of the review is Google. They recently renovated my basement bathroom and did a great job. They were so professional and worked very clean. Thank you!Posted on Eagle One TradingTrustindex verifies that the original source of the review is Google. I worked with Lilium Design & Build for my kitchen renovation and the experience was really good. The team was very organized and they understood the style I want for my new kitchen. They changed the cabinets, countertops, and lighting, and everything looks modern and clean now. They worked carefully and always checked with me before making any important step. Every day the kitchen looked better and better. The workers were polite and they kept the area tidy even during the renovation. The final result is amazing. My kitchen feels bigger, brighter and more comfortable to use. I am very happy with the work from Lilium Design & Build and I recommend them for anyone who wants a beautiful new kitchen.Posted on Huseyin Enver AYDINTrustindex verifies that the original source of the review is Google. I worked with Lilium Design & Build for my main kitchen and basement kitchen renovations, and I was very satisfied with their service. The product quality was really good, and the communication was always clear and easy to understand. They finished the job on time and did not go over my budget, which was very important for me. They also gave me useful solutions during the project, and from the beginning to the end everything went very smooth and flawless. I am still happy with the results today. I really recommend Lilium Design & Build for anyone looking for a renovation company.Posted on selman durmusTrustindex verifies that the original source of the review is Google. Everything was as agreed upon. Great work. I am very happy to finally have found an honest and reliable contractor.Posted on Zumrad AmirdjanovaTrustindex verifies that the original source of the review is Google. Love how my bathroom turned out! They were easy to work with, quick, and really cared about doing things right. Totally recommend.Posted on Dan RossiTrustindex verifies that the original source of the review is Google. Huseyin and his team did an excellent job renovating our basement to create a bedroom office. He was efficient, professional and very helpful. We highly recommend him to anyone else who needs renovations done!Posted on Guangzhen LyuTrustindex verifies that the original source of the review is Google. Good job. Good service. Reliable team.Posted on Omr DreTrustindex verifies that the original source of the review is Google. I had a fantastic experience working with Hüseyin and the team at Lilium Design ,From start to finish, they were professional, reliable, and extremely detail-oriented. Hüseyin took the time to understand exactly what I wanted and made great suggestions that improved the final result even more. The workmanship was top-notch, and everything was completed on time and within budget. The site was always kept clean, and communication was clear throughout the entire project. It’s hard to find a contractor you can truly trust—but with Lilium, I felt confident every step of the way. Highly recommend them to anyone looking for high-quality renovation workPosted on Bulent GokcenTrustindex verifies that the original source of the review is Google. We had a leak in our master bathroom and reached out to Huseyin from Lilium Design & Build Inc. and we’re so glad we did. He was professional, efficient, and the quality of his work was top notch. He didn’t just patch things up, he took the time to properly fix everything and made sure it was done right. The whole experience was smooth, and you can tell he takes pride in what he does. Highly recommend Huseyin if you want the job done properly and with care!Posted on Fatih KayaTrustindex verifies that the original source of the review is Google. I hired Lilium Design & Build to finish my legal basement, and I’m honestly so glad I did. From the first meeting, they were super professional, clear about the process, and really easy to communicate with. What I appreciated most was how stress-free they made everything, they handled permits, inspections, and all the behind-the-scenes work that I would’ve had no idea how to manage on my own. The team was always respectful of my home, showed up on time, and took real pride in what they were doing. The attention to detail in the finishes and layout really shows, it doesn’t feel like just a basement; it feels like a natural part of the home now. They stuck to the timeline and budget, which gave me a lot of peace of mind. It’s hard to find contractors who are both skilled and trustworthy, and Lilium really came through. I’d 100% recommend them to anyone doing a basement or renovation project. Thanks again to the whole team amazing job!Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Here are answers to common questions about basement finishing and legal basement apartments in Ajax.
A legal basement meets building codes including ceiling height, fire separation, and proper exits.
Costs vary depending on size and design. However, income suites provide long-term returns.
Yes. We handle all permits and ensure full compliance.
Yes, if it meets legal requirements. We build compliant rental units.
Most projects take 4 to 8 weeks depending on scope.
We serve homeowners in Ajax and nearby cities including Whitby, Oshawa, Pickering, and across Durham Region. We deliver basement renovations built for income and long-term value.
Learn how legal basement apartments and smart layouts can turn your basement into a valuable asset.
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Upgrade your basement with a legal and functional design that increases value and generates income.
Lilium Design & Build Inc. provides trusted home renovation services across Durham Region, including kitchen, bathroom, basement, and full home renovations. We focus on quality craftsmanship, transparent communication, and results built to last.
EXCELLENT Based on 39 reviews Posted on Meh STrustindex verifies that the original source of the review is Google. They recently renovated my basement bathroom and did a great job. They were so professional and worked very clean. Thank you!Posted on Eagle One TradingTrustindex verifies that the original source of the review is Google. I worked with Lilium Design & Build for my kitchen renovation and the experience was really good. The team was very organized and they understood the style I want for my new kitchen. They changed the cabinets, countertops, and lighting, and everything looks modern and clean now. They worked carefully and always checked with me before making any important step. Every day the kitchen looked better and better. The workers were polite and they kept the area tidy even during the renovation. The final result is amazing. My kitchen feels bigger, brighter and more comfortable to use. I am very happy with the work from Lilium Design & Build and I recommend them for anyone who wants a beautiful new kitchen.Posted on Huseyin Enver AYDINTrustindex verifies that the original source of the review is Google. I worked with Lilium Design & Build for my main kitchen and basement kitchen renovations, and I was very satisfied with their service. The product quality was really good, and the communication was always clear and easy to understand. They finished the job on time and did not go over my budget, which was very important for me. They also gave me useful solutions during the project, and from the beginning to the end everything went very smooth and flawless. I am still happy with the results today. I really recommend Lilium Design & Build for anyone looking for a renovation company.Posted on selman durmusTrustindex verifies that the original source of the review is Google. Everything was as agreed upon. Great work. I am very happy to finally have found an honest and reliable contractor.Posted on Zumrad AmirdjanovaTrustindex verifies that the original source of the review is Google. Love how my bathroom turned out! They were easy to work with, quick, and really cared about doing things right. Totally recommend.Posted on Dan RossiTrustindex verifies that the original source of the review is Google. Huseyin and his team did an excellent job renovating our basement to create a bedroom office. He was efficient, professional and very helpful. We highly recommend him to anyone else who needs renovations done!Posted on Guangzhen LyuTrustindex verifies that the original source of the review is Google. Good job. Good service. Reliable team.Posted on Omr DreTrustindex verifies that the original source of the review is Google. I had a fantastic experience working with Hüseyin and the team at Lilium Design ,From start to finish, they were professional, reliable, and extremely detail-oriented. Hüseyin took the time to understand exactly what I wanted and made great suggestions that improved the final result even more. The workmanship was top-notch, and everything was completed on time and within budget. The site was always kept clean, and communication was clear throughout the entire project. It’s hard to find a contractor you can truly trust—but with Lilium, I felt confident every step of the way. Highly recommend them to anyone looking for high-quality renovation workPosted on Bulent GokcenTrustindex verifies that the original source of the review is Google. We had a leak in our master bathroom and reached out to Huseyin from Lilium Design & Build Inc. and we’re so glad we did. He was professional, efficient, and the quality of his work was top notch. He didn’t just patch things up, he took the time to properly fix everything and made sure it was done right. The whole experience was smooth, and you can tell he takes pride in what he does. Highly recommend Huseyin if you want the job done properly and with care!Posted on Fatih KayaTrustindex verifies that the original source of the review is Google. I hired Lilium Design & Build to finish my legal basement, and I’m honestly so glad I did. From the first meeting, they were super professional, clear about the process, and really easy to communicate with. What I appreciated most was how stress-free they made everything, they handled permits, inspections, and all the behind-the-scenes work that I would’ve had no idea how to manage on my own. The team was always respectful of my home, showed up on time, and took real pride in what they were doing. The attention to detail in the finishes and layout really shows, it doesn’t feel like just a basement; it feels like a natural part of the home now. They stuck to the timeline and budget, which gave me a lot of peace of mind. It’s hard to find contractors who are both skilled and trustworthy, and Lilium really came through. I’d 100% recommend them to anyone doing a basement or renovation project. Thanks again to the whole team amazing job!Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more