Basement finishing in Durham is one of the smartest ways to increase your home’s value. It can also create steady rental income. For this reason, many homeowners now build a legal basement in Ontario.
In addition, a finished basement gives you more usable space. It also improves long-term property value. Whether you plan to live in it or rent it out, the benefits are clear.
Our team focuses on legal basement apartments, income suites, and full basement renovations. We handle design, permits, and construction. As a result, you get a safe and fully compliant space built for real value.
Turn Your Basement Into Monthly Income
We serve homeowners across Durham Region, including Whitby, Ajax, Oshawa, and Pickering. Our goal is to build legal basement units that generate income and increase property value. In addition, we focus on quality, safety, and long-term durability.
We build legal basement units that meet Ontario building codes. This includes permits, fire separation, and proper exits.
We turn unused basements into rental units. As a result, you can create a steady income stream.
We build private entrances for basement units. This improves both access and rental value.
We complete full basement renovations. This includes layout, drywall, flooring, and lighting.
The cost of basement finishing in Durham depends on size and design. It also depends on whether you are building a legal unit. However, most projects should be seen as long-term investments.
Our process is simple and efficient. It helps you move from idea to finished basement without stress.
Our clients trust us to deliver basement projects that add real value. Many return for future renovations.
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
Important answers about legal basements, permits, and rental opportunities in Durham.
Income depends on location and design. However, many legal basement units provide steady monthly returns.
A legal basement needs permits, proper height, fire protection, and safe exits.
Yes. We handle all permits and approvals for you.
Most basement projects take 6 to 8 weeks. It depends on size and scope.
Yes. A legal basement can increase property value and generate long-term income.
We serve homeowners across Durham Region, including Whitby, Ajax, Oshawa, Pickering, Bowmanville, Courtice, Brooklin, Uxbridge, and Scugog. We focus on building legal basement units that deliver real value.
Learn how to increase rental income and property value with smart basement renovation strategies.
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Turn your basement into a legal income unit and unlock its full potential.
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